Deoxidizing low-fluorine high-efficiency slagging agent for steelmaking, manufacturing equipment and preparation method of slagging agent

Abstract

The invention provides a deoxidizing low-fluorine high-efficiency slagging agent for steelmaking, manufacturing equipment and a preparation method thereof, and relates to the technical field of steelmaking, the deoxidizing low-fluorine high-efficiency slagging agent comprises the following components in parts by mass: 5-25 parts of calcium carbide CaC, 40-55 parts of aluminum oxide # imgabs 0 #, 15-40 parts of calcium fluoride # imgabs 1 #, 3-8 parts of calcium aluminate powder, 1-3 parts of silicon carbide SiC, 0.5-2 parts of silicon-calcium alloy Ca-Si, and 3-8 parts of silicon dioxide # imgabs 2 #; according to the method, calcium carbide is used for deoxidizing and producing alkaline oxides, so that foam slag is generated, aluminum oxide is used for reducing the melting point of refining slag, improving the fluidity of the refining slag, increasing the slagging speed to a certain extent, reducing the slagging time, and meanwhile, the deoxidizing effect is taken into account, and oxygen content in the slag is directly removed while slagging is performed; and the smelting period is shortened, the refining smelting rhythm is accelerated, the purity of the molten steel is improved, and the content of inclusions in the steel is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steelmaking, and in particular to a deoxidizing, low-fluorine, high-efficiency slagging agent for steelmaking, manufacturing equipment and a preparation method thereof. Background Art

[0002] With the development of today's society, the rapid development of the steel industry has always used fluorite as a slagging agent in the steelmaking and refining process. Its advantages are fast slagging speed and rapid formation of foamed slag, which is conducive to refining. However, it is easy to cause erosion of the furnace lining and ladle lining. At the same time, a large amount of F ions are generated during use, which causes great pollution to the ecological environment. Therefore, steel companies are looking for a refining slagging agent that can replace fluorite. Fluorine-free or low-fluorine steelmaking has become the development trend of molten steel refining today. Traditional slagging agent products have only a single slagging effect and do not have the effect of molten steel deoxidation. The refining furnace needs to continuously add deoxidizing materials to deoxidize the slag surface during the slagging process to remove the oxygen content in the molten steel. Affected by the slagging time and the position of the deoxidizer input, the deoxidation slagging rate is slow, which seriously affects the refining and smelting cycle, and ultimately leads to a high oxygen content in the molten steel, the inclusions in the steel fail to float up in time, the molten steel cleanliness is insufficient, and the inclusions exceed the standard.

[0003] Existing high-efficiency slag-removing agents and their preparation processes, such as those described in Application No. CN202311614129.7, contain the following main components, by mass percentage: CaO: 20-35%, SiO2: 10-25%, Fe2O3: 30-50%, MgO: 5-10%, and Al2O3: 1-5%. The preparation method involves weighing the raw materials, pre-melting the product to obtain a pre-melted product, crushing the product to obtain granules smaller than 3 mm, and finally adding a binder to the granules and pressing them to obtain the high-efficiency slag-removing agent for steelmaking. However, due to the high water content after processing and strict requirements on the slag system, this technique can only be used in small quantities, resulting in a narrow application range, high energy consumption, and poor industrial application. Furthermore, it lacks good steel deoxidation performance. Therefore, the present invention proposes a low-fluorine, high-efficiency slag-removing agent for steelmaking, a manufacturing device, and a preparation method to address the problems of the existing technology. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a deoxidation, low-fluorine, high-efficiency slag-forming agent for steelmaking, a manufacturing device and a preparation method thereof. The deoxidation, low-fluorine, high-efficiency slag-forming agent for steelmaking can improve the purity of molten steel and reduce the inclusion content in steel.

[0005] To achieve the purpose of the present invention, the present invention is implemented by the following technical solution: a deoxidizing low-fluorine high-efficiency slag-forming agent for steelmaking, comprising the following components by mass ratio: calcium carbide CaC: 5-25 parts, aluminum oxide : 40-55 parts, calcium fluoride : 15-40 parts, calcium aluminate powder: 3-8 parts, silicon carbide SiC: 1-3 parts, calcium silicon alloy Ca-Si: 0.5-2 parts, silicon dioxide : 3-8 parts, total iron‌TFe: 1-1.5 parts, magnesium oxide‌MgO: 1-3 parts, sulfur‌S: 0.1-0.15 parts, phosphorus‌P: 0.03-0.06 parts.

[0006] Further improvements are: the particle size of the calcium carbide CaC is less than 5mm, the calcium fluoride The particle size is less than 5mm, the aluminum oxide The particle size is less than 5mm.

[0007] A manufacturing device for a deoxidizing, low-fluorine, high-efficiency slagging agent for steelmaking, comprising a frame ball pressing and discharging kit and a stirring and mixing component, wherein plug-in mounted feed crushing and fine grinding components are provided above both ends of the frame ball pressing and discharging kit, a material drying mechanism which is socket-connected to the feed crushing and fine grinding component is plugged into the inner side of one end of the frame ball pressing and discharging kit, a socket-connected screening mechanism is provided at the output end of the feed crushing and fine grinding component, and a socket-connected stirring and mixing component is provided at the output end of the screening mechanism.

[0008] The further improvement is that: the frame ball pressing and discharging kit includes a pad, a shock-absorbing base plate, a lower frame, an inner lining plate, an annular sleeve plate, an upper frame, an end beam, a driving roller rod, a conveyor belt, a pressure cabin shell, a sleeve cross cabin, a pneumatic valve plate, a pneumatic cylinder, a pusher plate, a pressure motor, a pressure rod and a first meshing gear set, the top side of the pad is provided with a shock-absorbing base plate connected by bolts, and the upper four sides of the shock-absorbing base plate are bolted to the lower frame, and the inner side of the lower frame is provided with an inner lining plate, the upper inner side of the lower frame is provided with an annular sleeve plate connected by bolts, and the upper outer side of the lower frame is provided with an upper frame connected by bolts, The top of the upper frame is provided with an end-to-end beam, the output end of the lower frame is provided with a driving roller rod, the output end of the driving roller rod is provided with a wrap-around conveyor belt, the inner side of the middle part of the lower frame is provided with a bolted pressure cabin shell, and a sleeve horizontal cabin is provided above one end of the pressure cabin shell, the output end of the sleeve horizontal cabin is provided with a pneumatic valve plate, the upper inner side of the pressure cabin shell is provided with a sleeve-mounted pneumatic cylinder, and the output end of the pneumatic cylinder is provided with a push piece, a pressure motor is provided on one side of the pressure cabin shell, and the output end of the pressure motor is provided with a pressure rod that is transmission-connected to the first meshing gear set.

[0009] The further improvement is that the feeding crushing and fine grinding components include a processing cabin, a top cover, a feeding port, a pneumatic telescopic rod, a connecting plate, a matching valve plate, a middle oblique plate, a lower oblique plate, a first motor, a crushing gear set, a second meshing gear set, a fine grinding cabin, a pulley set, a second motor, a fine grinding roller and a lower pipe. The processing cabin is arranged on the top side of the end-to-beam, and a top cover connected by bolts is provided on the top of the processing cabin, and a feeding port is provided above the top cover, and a pneumatic telescopic rod is provided on the outer side of the top cover, and the output end of the pneumatic telescopic rod is provided with a A connecting plate is provided, a matching valve plate is provided on the inner side of the connecting plate, a middle oblique plate is provided on the inner side of the middle part of the processing cabin, a lower oblique plate is provided on the inner bottom side of the processing cabin, a lower pipe is provided at the bottom end of the processing cabin for sleeve installation, a first motor is provided on the upper outer side of the processing cabin, and a crushing gear group with a transmission connection to the second meshing gear group is provided at the output end of the first motor, a fine grinding cabin is provided inside the processing cabin, and a fine grinding roller connected to the output end of the pulley group is provided inside the fine grinding cabin, and a second motor is provided at the input end of the pulley group.

[0010] Further improvement is that: the material drying mechanism includes a drying cabin, an upper inclined pipe, a bucket-shaped cabin, a lower inclined pipe, a non-woven cover, an exhaust fan, a centrifugal motor, an arc bar, a centrifugal table, an electric auger, a stage inserting table, a rolling guide wheel, an electric gear, a gear cover, an inner hole column, an inner oblique piece, a middle hole column, a middle oblique piece, a middle gear ring guard piece, an outer hole column, an outer oblique piece, an outer gear ring guard piece, an air pump, a heating cabin, an air inlet fan, a heating rod, a diverter valve and a hose, the drying cabin is arranged on the inner side of one end of the end-to-end beam, and the drying and drying An upper inclined pipe is provided on one side of the drying chamber, a bucket-shaped chamber is provided at the bottom end of the drying chamber, a non-woven fabric cover is provided above the drying chamber, and an exhaust fan is provided above one end of the non-woven fabric cover, a centrifugal motor is provided at the bottom end of the bucket-shaped chamber, and an arc-shaped bar is provided at the output end of the centrifugal motor, a centrifugal table is provided at the top end of the arc-shaped bar, an electric auger is provided at the output end of the lower inclined pipe, and a step-in table is provided on the inner side of the bottom of the drying chamber. A rolling guide wheel is provided at the inner groove of the stage plug-in platform, an electric gear is provided at the output end of the stage plug-in platform, a gear cover is provided above the outer end of the stage plug-in platform, an inner hole column is provided above the inner end of the stage plug-in platform, and an inner oblique piece is provided on the outer side of the inner hole column, a middle hole column is provided above the middle part of the stage plug-in platform, a middle oblique piece is provided on the outer side of the middle hole column, a middle tooth ring guard is provided on the inner side of the lower part of the middle hole column, an outer hole column is provided above the outer end of the stage plug-in platform, and an outer hole column is provided on the outer side of the outer hole column. There is an outer bevel plate, an outer gear ring guard plate is provided on the inner side below the outer hole column, air pumps are provided at both ends of the lower side of the drying chamber, and a sleeve-mounted heating chamber is provided at the outer end of the air pump, air inlet fans are provided at both ends of the heating chamber, a heating rod is provided inside the heating chamber, a diverter valve is provided at the output end of the air pump, and a hose is provided at the output end of the diverter valve, which is sleeve-connected to the inner hole column, the middle hole column and the outer hole column. The inclination angles of the outer bevel plate, the middle bevel plate and the inner bevel plate decrease in sequence.

[0011] The further improvement is that the screening mechanism includes a bolt valve cabin, a ferrule shell, a screening cabin, a bearing partition, an electric meshing gear, a threaded cabin, a threaded strip, an opening and closing valve plate, a shock-absorbing base frame, a vibration motor, an inclined sleeve plate, a force block, an upper screen plate, a lower screen plate, a transmission cabin, a transmission motor, a striking rod and a temporary storage cabin, the bolt valve cabin is bolted to the bottom end of the lower pipe, a ferrule shell is provided below the bolt valve cabin, a clip-on screening cabin is provided below the ferrule shell, a bearing partition is provided on the inner side of the bolt valve cabin, and an electric meshing gear is provided at the output end of the bearing partition, and the output end of the electric meshing gear is provided A threaded cabin is provided, and a threaded strip is provided on the inner side of the threaded cabin, an opening and closing valve plate is provided at one end of the threaded strip, a shock-absorbing base frame is provided on the inner bottom side of the bearing partition, and a vibration motor is provided on the side of the shock-absorbing base frame, an inclined sleeve is provided on the inner side of the screening cabin, and a force block is provided above the side of the inclined sleeve, an upper sieve plate is provided on the inner side of the upper part of the inclined sleeve, a lower sieve plate is provided on the inner side of the lower part of the inclined sleeve, a transmission cabin connected to the output end of the transmission motor is provided on the inner side of the lower sieve plate, a striking rod is provided at the output end of the transmission cabin, and a temporary storage cabin installed in a socket is provided on the outer side of the screening cabin.

[0012] The further improvement is that the stirring and mixing component includes a mixing bin, a connecting pool body, an extrusion pipe, a liquid inlet valve, an inner lining ring, an inner lining guide wheel, a helical gear ring, a helical gear, a transmission case, a gear motor, a center column, a stirring rod, a bearing sleeve and an extrusion auger. The mixing bin is sleeved and connected to the inner side of the annular sleeve, the top of the mixing bin is provided with a connecting pool body, the bottom of the mixing bin is provided with an extrusion pipe, the upper side of the mixing bin is provided with a sleeved and installed liquid inlet valve, the inner side of the mixing bin is provided with an inner lining ring, and the inner side of the inner lining ring is provided with an inner lining guide wheel, a helical gear ring is provided below the inner lining guide wheel, and a helical gear is provided below one end of the helical gear, one end of the helical gear is provided with a transmission case connected to the output end of the gear motor, a center column is provided above the inner lining guide wheel, and a stirring rod is provided on the outer side of the center column, and the output end of the center column passes through the bearing sleeve and is connected to the extrusion auger.

[0013] A method for preparing a deoxidizing, low-fluorine, high-efficiency slagging agent for steelmaking comprises the following steps:

[0014] The raw materials to be processed are fed into the feeding port on the top cover in batches, and the weighing component of the equipment weighs the raw materials. When the weighing reaches the required level, the pneumatic telescopic rod on the top cover is used to output power to drive the output end to operate, so that the connecting plate drives the matching valve plate to open the top cover, and after opening, the raw materials are fed into the processing chamber.

[0015] The output power of the first motor is used to drive the output end to operate, so as to drive the grinding gear set to rotate and cooperate with the second meshing gear set to perform preliminary grinding of the raw materials. After the grinding, the materials are input into the fine grinding chamber under the action of the middle inclined piece. The output power of the second motor is used to drive the output end to operate, so that the pulley set is driven to drive the fine grinding roller to finely grind the raw materials. After processing, the materials are input into the upper inclined pipe through the processing chamber and then into the drying chamber.

[0016] The material falls onto the centrifugal table. During centrifugal operation, the centrifugal motor under the bucket cabin outputs power to drive the output end to operate, driving the arc-shaped bar to cooperate with the centrifugal table to rotate at high speed. According to the quality of different materials, it drives them to divert centrifugal movement. The annular structure channel formed by the inner hole column, inner oblique sheet, middle hole column, middle oblique sheet, outer hole column, outer oblique sheet and drying chamber is used to divert and introduce materials of different qualities.

[0017] Turn on the inlet fan and the exhaust fan to output power to drive the output end to operate, so that the air can circulate, so that the air enters the heating chamber and is heated by the heating rod. After the air is heated, the hot air is accelerated through the air pump output and then the diverter valve is opened to input the hot air through the hose at the output end to the inner hole column, the middle hole column and the outer hole column to achieve the heating and drying treatment of the material. When blockage occurs, the output power of the output end of the stage is used to drive the electric gear output to run, so as to drive the middle hole column and the outer hole column to deviate at a limited angle to achieve the effect of unblocking.

[0018] After drying, the material is input into the lower inclined pipe through the rotation of the arc strip, and then input into the lower pipe after the electric auger output operation. When the material gathers in the lower pipe, the bearing partition outputs power to drive the output end to operate, so that the electric meshing gear engages and drives the threaded cabin and the threaded strip to spirally operate, driving the opening and closing valve plate to open the bolt valve cabin, so that the material is input into the screening cabin under the ferrule shell;

[0019] The vibration motor on the side of the shock-absorbing base frame is used to output power to generate vibration force, so that the upper and lower sieve plates on the inclined sleeve plate can achieve the screening effect under the action of vibration. The screened materials are input into the connecting pool body and injected into the mixing bin, and the processed liquid raw materials are injected into the liquid inlet valve. Then the gear motor is used to output power to drive the transmission chassis to output and run, drive the helical gear to mesh and run, and then drive the helical gear ring to run, drive the liner guide wheel to rotate on the liner ring, and then rotate the center column and the stirring rod to mix and form the materials. After the materials are mixed and formed, the center column drives the extrusion auger under the bearing sleeve plate to rotate;

[0020] When ball pressing is required, the output power of the output end above the horizontal cabin is used to drive the pneumatic valve plate at the output end to open. After the output of the extruder auger is running, the material is input into the pressure rod inside the pressure cabin shell. The power output of the pneumatic cylinder causes the pusher to push the material to run.

[0021] The pressure motor outputs power to drive the first meshing gear set to run in opposite directions, so that the pressure rod can perform ball pressing on the material. After the ball pressing process, the product falls onto the conveyor belt, and the power output from the lower frame causes the drive roller rod to output and run, driving the conveyor belt to run, and the product is run to the target location to complete the processing.

[0022] A further improvement is that when the upper and lower sieve plates are blocked, the transmission motor is used to output power to drive the transmission cabin to output operation, so that the striking rod rotates the force block to achieve the effect of vibration after hitting, thereby clearing the block.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention uses calcium carbide to perform deoxidation and produce alkaline oxides, which is beneficial to the formation of foamed slag. Alumina can reduce the melting point of the refined slag, improve its fluidity, and also increase the slagging speed to a certain extent, reducing the slagging time. At the same time, the deoxidation effect is taken into account. The oxygen content in the slag is directly removed during slagging, and then diffusion deoxidation is achieved to achieve the deoxidation effect of molten steel, shorten the smelting cycle, accelerate the refining and smelting rhythm, and ultimately improve the purity of molten steel and reduce the inclusion content in the steel.

[0025] 2. The present invention utilizes an air pump, a heating chamber, an air inlet fan, a heating rod, a diverter valve and a hose to heat the air input and cooperates with the output operation of a non-woven fabric cover and an exhaust fan to enable uninterrupted output of hot air. At the same time, after the centrifugal motor, the arc-shaped bar and the centrifugal table are centrifugally operated, different materials are centrifugally swung according to their own mass and are respectively directed into the three annular cabins between the inner hole column, the middle hole column, the outer hole column and the drying chamber. The guidance of the outer oblique sheet, the middle oblique sheet and the inner oblique sheet achieves the effect of synchronous falling and drying, thereby improving the quality of the raw materials processed into products.

[0026] 3. The present invention performs a limited angle offset under the action of the stage insertion table, rolling guide wheel and electric gear to achieve the effect of preventing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the front view of the present invention;

[0028] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the frame ball pressing and discharging kit of the present invention;

[0031] Figure 5 This is a schematic diagram of the feed crushing and fine grinding component of the present invention;

[0032] Figure 6 Schematic diagram of the material drying mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the diverter valve and hose structure of the present invention;

[0034] Figure 8 It is a schematic diagram of the screening mechanism of the present invention;

[0035] Figure 9 Schematic diagram of the stirring and mixing components of the present invention.

[0036] In the figure: 1. Frame body pressure ball discharge kit; 101. Pad; 102. Shock-absorbing base plate; 103. Lower frame; 104. Liner plate; 105. Annular sleeve plate; 106. Upper frame; 107. End beam; 108. Driving roller; 109. Conveyor belt; 1010. Pressure cabin; 1011. Cross cabin; 1012. Pneumatic valve plate; 1013. Pneumatic cylinder; 1014. Pusher; 1015. Pressure motor; 1016. Pressure rod; 1017. First meshing gear set; 2. Feed crushing and fine grinding components; 201. Processing cabin; 202. Top cover; 203. Feed inlet; 204. Pneumatic telescopic rod; 205. Connecting strip plate; 206 , matching valve plate; 207, middle inclined plate; 208, lower inclined plate; 209, first motor; 2010, crushing gear set; 2011, second meshing gear set; 2012, fine grinding chamber; 2013, pulley set; 2014, second motor; 2015, fine grinding roller; 2016, lower pipe; 3, material drying mechanism; 301, drying chamber; 302, upper inclined pipe; 303, bucket-shaped chamber; 304, lower inclined pipe; 305, non-woven cover; 306, exhaust fan; 307, centrifugal motor; 308, arc strip; 309, centrifugal table; 3010, electric auger; 3011, stage inserting table; 3012, rolling guide wheel; 301 3. Electric gear; 3014. Gear cover; 3015. Inner hole column; 3016. Inner bevel plate; 3017. Middle hole column; 3018. Middle bevel plate; 3019. Middle gear ring guard plate; 3020. Outer hole column; 3021. Outer bevel plate; 3022. Outer gear ring guard plate; 3023. Air pump; 3024. Heating chamber; 3025. Inlet fan; 3026. Heating rod; 3027. Directional valve; 3028. Hose; 4. Screening mechanism; 401. Bolted valve chamber; 402. Ferrule housing; 403. Screening chamber; 404. Bearing partition; 405. Electric meshing gear; 406. Threaded chamber; 407. Threaded strip; 408. Opening and closing valve plate; 409. Shock-absorbing base frame; 4010. Vibration motor; 4011. Inclined sleeve; 4012. Force block; 4013. Upper sieve plate; 4014. Lower sieve plate; 4015. Transmission cabin; 4016. Transmission motor; 4017. Beating rod; 4018. Temporary storage cabin; 5. Mixing and stirring components; 501. Mixing bin; 502. Connecting pool body; 503. Extrusion pipe; 504. Liquid inlet valve; 505. Lining ring; 506. Lining guide wheel; 507. Helical gear ring; 508. Helical gear; 509. Transmission chassis; 5010. Gear motor; 5011. Center column; 5012. Stirring rod; 5013. Bearing sleeve; 5014. Extrusion auger. DETAILED DESCRIPTION

[0037] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0038] Example 1

[0039] This embodiment proposes a deoxidizing, low-fluorine, and high-efficiency slag-forming agent for steelmaking, comprising the following components by mass ratio: 5 parts calcium carbide (CaC), 5 parts aluminum oxide, : 40 parts, calcium fluoride : 15 parts, calcium aluminate powder: 3 parts, silicon carbide SiC: 1 part, calcium silicon alloy Ca-Si: 0.5 parts, silicon dioxide : 3 parts, total iron‌TFe: 1 part, magnesium oxide‌MgO: 1 part, sulfur‌S: 0.1 parts, phosphorus‌P: 0.03 parts.

[0040] calcium carbide [Particle size <5mm, purity ≥92%], used for rapid deoxidation and heat release to promote slag formation. ‌Alumina [Particle size <5mm, specific surface area 5-10m² / g], improves slag basicity and high temperature stability. Calcium fluoride [Particle size <5mm, purity ≥90%], reduces slag viscosity and promotes the formation of molten phase. Calcium aluminate powder , enhancing slagging rate and desulfurization capacity. ‌ Silicon carbide (SiC) [particle size <0.5mm] assists in deoxidation and inhibits slag drying. ‌ Calcium silicon alloy (Ca-Si) [Ca content ≥30%] enhances final deoxidation and reduces inclusions. , ‌TFe, ‌MgO, ‌S, ‌P, ‌ , ensuring the fluidity of slag and the cleanliness of molten steel.

[0041] The particle size of calcium carbide is 0-3mm; the particle size of calcium fluoride is 80-100 mesh; and the particle size of aluminum oxide is >50 mesh.

[0042] Example 2

[0043] This embodiment proposes a deoxidizing, low-fluorine, and high-efficiency slag-forming agent for steelmaking, comprising the following components by mass ratio: calcium carbide (CaC): 15 parts, aluminum oxide: : 45 parts, calcium fluoride : 30 parts, calcium aluminate powder: 5 parts, silicon carbide SiC: 2 parts, calcium silicon alloy Ca-Si: 1 part, silicon dioxide : 5 parts, total iron‌TFe: 1.2 parts, magnesium oxide‌MgO: 2 parts, sulfur‌S: 0.12 parts, phosphorus‌P: 0.04 parts.

[0044] calcium carbide [Particle size <5mm, purity ≥92%], used for rapid deoxidation and heat release to promote slag formation. ‌Alumina [Particle size <5mm, specific surface area 5-10m² / g], improves slag basicity and high temperature stability. Calcium fluoride [Particle size <5mm, purity ≥90%], reduces slag viscosity and promotes the formation of molten phase. Calcium aluminate powder , enhance slagging rate and desulfurization ability. ‌ Silicon carbide (SiC) [particle size <0.5mm], assists deoxidation and inhibits slag drying. ‌ Calcium silicon alloy (Ca-Si) [Ca content ≥30%], enhances final deoxidation effect and reduces inclusions. ‌ , ‌TFe, ‌MgO, ‌S, ‌P, ‌ , ensuring the fluidity of slag and the cleanliness of molten steel.

[0045] The particle size of calcium carbide is 0-5 mm; the particle size of calcium fluoride is less than 3 mm; and the particle size of aluminum oxide is less than 2 mm.

[0046] Example 3

[0047] This embodiment proposes a deoxidizing, low-fluorine, and high-efficiency slag-forming agent for steelmaking, comprising the following components by mass ratio: calcium carbide (CaC): 25 parts, aluminum oxide: : 55 parts, calcium fluoride : 40 parts, calcium aluminate powder: 8 parts, silicon carbide SiC: 3 parts, calcium silicon alloy Ca-Si: 2 parts, silicon dioxide : 8 parts, total iron‌TFe: 1.5 parts, magnesium oxide‌MgO: 3 parts, sulfur‌S: 0.15 parts, phosphorus‌P: 0.06 parts.

[0048] calcium carbide [Particle size <5mm, purity ≥92%], used for rapid deoxidation and heat release to promote slag formation. ‌Alumina [Particle size <5mm, specific surface area 5-10m² / g], improves slag basicity and high temperature stability. Calcium fluoride [Particle size <5mm, purity ≥90%], reduces slag viscosity and promotes the formation of molten phase. Calcium aluminate powder , enhancing slagging rate and desulfurization capacity. ‌ Silicon carbide (SiC) [particle size <0.5mm] assists in deoxidation and inhibits slag drying. ‌ Calcium silicon alloy (Ca-Si) [Ca content ≥30%] enhances final deoxidation and reduces inclusions. , ‌TFe, ‌MgO, ‌S, ‌P, ‌ , ensuring the fluidity of slag and the cleanliness of molten steel.

[0049] The particle size of calcium carbide is 0-4 mm; the particle size of calcium fluoride is less than 2 mm; and the particle size of aluminum oxide is less than 1 mm.

[0050] According to the first, second and third embodiments, it can be concluded that the present invention adopts the following mass ratio components: calcium carbide CaC: 5-25 parts, aluminum oxide : 40-55 parts, calcium fluoride : 15-40 parts, calcium aluminate powder: 3-8 parts, silicon carbide SiC: 1-3 parts, calcium silicon alloy Ca-Si: 0.5-2 parts, silicon dioxide : 3-8 parts, total iron‌TFe: 1-1.5 parts, magnesium oxide‌MgO: 1-3 parts, sulfur‌S: 0.1-0.15 parts, phosphorus‌P: 0.03-0.06 parts, the prepared deoxidation low-fluorine high-efficiency slag-forming agent for steelmaking is beneficial to shorten the smelting cycle, speed up the refining and smelting rhythm, and ultimately improve the purity of molten steel and reduce the inclusion content in steel.

[0051] Example 4

[0052] according to Figure 1-9 As shown, this embodiment proposes a manufacturing device for a deoxidation, low-fluorine, high-efficiency slagging agent for steelmaking, including a frame ball pressing and discharging kit 1 and a stirring and mixing component 5, a feed crushing and fine grinding component 2 is provided above both ends of the frame ball pressing and discharging kit 1, a material drying mechanism 3 connected to the feed crushing and fine grinding component 2 is inserted on the inner side of one end of the frame ball pressing and discharging kit 1, a screening mechanism 4 connected in a socket connection is provided at the output end of the feed crushing and fine grinding component 2, and a stirring and mixing component 5 connected in a socket connection is provided at the output end of the screening mechanism 4.

[0053] The frame ball pressing and discharging kit 1 includes a pad 101, a shock-absorbing base plate 102, a lower frame 103, an inner lining plate 104, an annular sleeve plate 105, an upper frame 106, an end beam 107, a driving roller rod 108, a conveyor belt 109, a pressure cabin 1010, a sleeve cross cabin 1011, a pneumatic valve plate 1012, a pneumatic cylinder 1013, a push piece 1014, a pressure motor 1015, a pressure rod 1016 and a first meshing gear set 1017. The top side of the pad 101 is provided with a bolted shock-absorbing base plate 102, and the upper four sides of the shock-absorbing base plate 102 are bolted to the lower frame 103, and the inner side of the lower frame 103 is provided with an inner lining plate 104, the upper inner side of the lower frame 103 is provided with a bolted annular sleeve plate 105, and the upper outer side of the lower frame 103 is provided with a bolted The upper frame 106 is provided with an end-to-end beam 107 at the top of the upper frame 106, the output end of the lower frame 103 is provided with a driving roller rod 108, and the output end of the driving roller rod 108 is provided with a wrap-around conveyor belt 109, and the middle inner side of the lower frame 103 is provided with a bolted pressure cabin 1010, and a sleeve cross cabin 1011 is provided above one end of the pressure cabin 1010, and the output end of the sleeve cross cabin 1011 is provided with a pneumatic valve plate 1012, and a sleeve-mounted pneumatic cylinder 1013 is provided on the upper inner side of the pressure cabin 1010, and the output end of the pneumatic cylinder 1013 is provided with a push piece 1014, and a pressure motor 1015 is provided on one side of the pressure cabin 1010, and the output end of the pressure motor 1015 is provided with a pressure rod 1016 that is transmission-connected to the first meshing gear set 1017.

[0054] When ball pressing is required, the output power of the output end above the horizontal cabin 1011 is used to drive the pneumatic valve plate 1012 at the output end to open. After the output of the extruder auger 5014 is running, the material is input into the pressure rod 1016 inside the pressure cabin 1010. After the output power of the pneumatic cylinder 1013 drives the output end to run, the push piece 1014 pushes the material to run. Then, the output power of the output end of the pressure motor 1015 is used to drive the output end to run, so that the first meshing gear set 1017 runs in opposite directions, so that the pressure rod 1016 will achieve the effect of ball pressing of the material. After the ball pressing process, the product falls onto the conveyor belt 109, and the output power of the lower frame 103 drives the output end to run, so that the drive roller rod 108 can drive the conveyor belt 109 to run after the output run, so that the product runs to the target location to achieve the effect of completing the processing.

[0055] The feeding crushing and fine grinding component 2 includes a processing cabin 201, a top cover 202, a feeding port 203, a pneumatic telescopic rod 204, a connecting plate 205, a matching valve plate 206, a middle inclined plate 207, a lower inclined plate 208, a first motor 209, a crushing gear set 2010, a second meshing gear set 2011, a fine grinding cabin 2012, a pulley set 2013, a second motor 2014, a fine grinding roller 2015 and a lower pipe 2016. The processing cabin 201 is arranged on the top side of the end beam 107, and the top of the processing cabin 201 is A top cover 202 connected by bolts is provided at the end, and a sleeve-mounted feed port 203 is provided above the top cover 202, a pneumatic telescopic rod 204 is provided on the outer sides of the top cover 202, and a connecting plate 205 is provided at the output end of the pneumatic telescopic rod 204, a matching valve plate 206 is provided on the inner side of the connecting plate 205, a middle oblique plate 207 is provided on the inner side of the middle part of the processing chamber 201, a lower oblique plate 208 is provided on the inner bottom side of the processing chamber 201, and a sleeve-mounted lower pipe 2016 is provided at the bottom end of the processing chamber 201.

[0056] When in use, the raw materials to be processed are input into the feed port 203 in batches through the feed port 203 above the top cover 202, so that the weighing component of the equipment can weigh the raw materials. When the weighing meets the requirements, the pneumatic telescopic rod 204 on the top cover 202 is used to output power to drive the output end to operate, so that the connecting plate 205 drives the matching valve plate 206 to open the top cover 202. After opening, the raw materials are input into the processing cabin 201.

[0057] A first motor 209 is provided on the upper outer side of the processing chamber 201, and a crushing gear group 2010 which is transmission-connected to the second meshing gear group 2011 is provided at the output end of the first motor 209. A fine grinding chamber 2012 is provided inside the processing chamber 201, and a fine grinding roller 2015 connected to the output end of the pulley group 2013 is provided inside the fine grinding chamber 2012. A second motor 2014 is provided at the input end of the pulley group 2013.

[0058] The first motor 209 is used to output power to drive the output end to operate, so that after the first motor 209 outputs power to operate, it drives the crushing gear set 2010 to rotate and cooperate with the second meshing gear set 2011 to achieve preliminary crushing of the raw materials. After crushing, the material is input into the fine grinding chamber 2012 under the action of the middle bevel 207, and then the second motor 2014 is used to output power to drive the output end to operate, so that the pulley set 2013 is driven to drive the fine grinding roller rod 2015 to achieve the effect of fine grinding of the raw materials.

[0059] The material drying mechanism 3 includes a drying chamber 301, an upper inclined pipe 302, a bucket-shaped chamber 303, a lower inclined pipe 304, a non-woven cover 305, an exhaust fan 306, a centrifugal motor 307, an arc bar 308, a centrifugal table 309, an electric auger 3010, a stage table 3011, a rolling guide wheel 3012, an electric gear 3013, a gear cover 3014, an inner hole column 3015, an inner oblique piece 3016, a middle hole column 3017, a middle oblique piece 3018, a middle gear ring guard piece 3019, an outer hole column 3020, an outer oblique piece 3021, an outer gear ring guard piece 3022, an air pump 3023, a heating chamber 3024, an inlet fan 3025, a heating rod 3026, a split Valve 3027 and hose 3028, the drying and drying cabin 301 is arranged on the inner side of one end of the end-to-beam 107, an upper inclined pipe 302 is provided on the upper side of the drying and drying cabin 301, a bucket-shaped cabin 303 is provided at the bottom end of the drying and drying cabin 301, a non-woven fabric cover 305 is provided above the drying and drying cabin 301, and an exhaust fan 306 is provided above one end of the non-woven fabric cover 305, a centrifugal motor 307 is provided at the bottom end of the bucket-shaped cabin 303, and an arc-shaped bar 308 is provided at the output end of the centrifugal motor 307, a centrifugal table 309 is provided at the top of the arc-shaped bar 308, and an electric auger 3010 is provided at the output end of the lower inclined pipe 304.

[0060] After fine grinding, the material is input into the upper inclined tube 302 through the processing chamber 201. After the material is input into the upper inclined tube 302, the material is input into the drying chamber 301. Then, a large amount of material is input into the centrifugal table 309. When centrifugal operation is required, the centrifugal motor 307 under the bucket-shaped chamber 303 is used to output power to drive the output end to operate, so that the arc-shaped bar 308 cooperates with the upper centrifugal table 309 to rotate at high speed. After the centrifugal table 309 rotates at high speed, the material is centrifuged. Through the centrifugal movement of the centrifugal table 309, the annular structure channel formed by the inner hole column 3015, the inner inclined plate 3016, the middle hole column 3017, the middle inclined plate 3018, the outer hole column 3020, the outer inclined plate 3021 and the drying chamber 301 achieve volume separation to effectively divert and introduce the raw materials. According to the distance that different materials are thrown by the centrifugal force, different materials are driven to divert centrifugal motion, and materials of different masses are diverted and introduced through the annular structural channel formed by the inner porous column 3015, the inner inclined plate 3016, the middle porous column 3017, the middle inclined plate 3018, the outer porous column 3020, the outer inclined plate 3021 and the drying chamber 301.

[0061] A step-through table 3011 is provided on the inner side of the lower part of the drying chamber 301, and a rolling guide wheel 3012 is provided at the inner groove of the step-through table 3011, an electric gear 3013 is provided at the output end of the step-through table 3011, a gear cover 3014 is provided above the outer end of the step-through table 3011, an inner hole column 3015 is provided above the inner end of the step-through table 3011, and an inner oblique piece 3016 is provided on the outer side of the inner hole column 3015, a middle hole column 3017 is provided above the middle part of the step-through table 3011, a middle oblique piece 3018 is provided on the outer side of the middle hole column 3017, a middle tooth ring guard 3019 is provided on the inner side of the lower part of the middle hole column 3017, and a middle tooth ring guard 3019 is provided on the outer end of the step-through table 3011. An outer porous column 3020 is provided, with an outer beveled plate 3021 disposed on the outer edge of the outer porous column 3020. An outer toothed ring guard plate 3022 is disposed on the inner side of the lower portion of the outer porous column 3020. Air pumps 3023 are disposed at both ends of the lower portion of the drying chamber 301, and a sleeve-mounted heating chamber 3024 is disposed on the outer end of the air pump 3023. Inlet fans 3025 are disposed at both ends of the heating chamber 3024, and a heating rod 3026 is disposed within the heating chamber 3024. A diverter valve 3027 is disposed at the output end of the air pump 3023, and a hose 3028 is provided at the output end of the diverter valve 3027, which is sleeve-connected to the inner porous column 3015, the middle porous column 3017, and the outer porous column 3020. The inclination angles of the outer beveled plates 3021, the middle beveled plates 3018, and the inner beveled plates 3016 decrease in sequence, guiding materials of different qualities to achieve synchronous falling and drying, thereby improving the quality of the products processed from the raw materials.

[0062] During the process of diversion introduction, the output power of the output end is driven to operate by turning on the inlet fan 3025 and the exhaust fan 306 to allow air to circulate, so that the air enters the heating chamber 3024 and is heated by the heating rod 3026. After the air is heated, the hot air is accelerated through the air pump 3023 and then the diverter valve 3027 is opened to be input into the inner hole column 3015, the middle hole column 3017, and the outer hole column 3020 through the hose 3028 at the output end to achieve heating and drying of the material. During the drying process, if blockage occurs, the output power of the output end on the stage inserting table 3011 is used to drive the electric gear 3013 to output and operate, so as to drive the middle hole column 3017 and the outer hole column 3020 to have a limited offset to achieve the effect of facilitating the falling of the material. After drying, the material is input into the lower inclined pipe 304 through the rotation of the arc bar 308, and then input into the lower pipe 2016 after the electric auger 3010 outputs and operates.

[0063] The screening mechanism 4 includes a bolt valve cabin 401, a ferrule shell 402, a screening cabin 403, a bearing partition 404, an electric meshing gear 405, a threaded cabin 406, a threaded strip 407, an opening and closing valve plate 408, a shock-absorbing base frame 409, a vibration motor 4010, an inclined sleeve plate 4011, a force block 4012, an upper sieve plate 4013, a lower sieve plate 4014, a transmission cabin 4015, a transmission motor 4016, a striking rod 4017 and a temporary storage cabin 4018. The bolt valve cabin 401 is bolted to the lower At the bottom end of the tube 2016, a ferrule shell 402 is provided below the bolt valve compartment 401, and a clip-on screening compartment 403 is provided below the ferrule shell 402. A bearing partition 404 is provided on the inner side of the bolt valve compartment 401, and an electric meshing gear 405 is provided at the output end of the bearing partition 404. A threaded compartment 406 is provided at the output end of the electric meshing gear 405, and a threaded strip 407 is provided on the inner side of the threaded compartment 406, and an opening and closing valve plate 408 is provided at one end of the threaded strip 407.

[0064] When the material accumulates in the lower tube 2016, the output end on the bearing partition 404 outputs power to drive the output end to operate, so that the electric meshing gear 405 engages and transmits the operation, and the threaded chamber 406 and the threaded bar 407 perform spiral operation, so that the opening and closing valve plate 408 opens the bolt valve chamber 401, allowing the material to be input into the screening chamber 403 below the ferrule shell 402.

[0065] A shock-absorbing base frame 409 is provided on the inner bottom side of the bearing partition 404, and a vibration motor 4010 is provided on the side of the shock-absorbing base frame 409, an inclined sleeve plate 4011 is provided on the inner side of the screening cabin 403, and a force block 4012 is provided on the upper side of the inclined sleeve plate 4011, an upper screen plate 4013 is provided on the upper inner side of the inclined sleeve plate 4011, and a lower screen plate 4014 is provided on the lower inner side of the inclined sleeve plate 4011, a transmission cabin 4015 connected to the output end of the transmission motor 4016 is provided on the inner side of the lower screen plate 4014, and a striking rod 4017 is provided on the output end of the transmission cabin 4015. A temporary storage cabin 4018 is provided on the outer side of the screening cabin 403.

[0066] The vibration motor 4010 on the side of the shock-absorbing base frame 409 is used to output power to generate vibration force, and the screening cabin 403 is processed and operated. After the screening cabin 403 is processed and operated, the upper screen plate 4013 and the lower screen plate 4014 on the inclined sleeve 4011 achieve a screening effect under the action of vibration. When the upper screen plate 4013 and the lower screen plate 4014 are blocked, the transmission motor 4016 is used to output power to drive the output end to operate, so that after the transmission motor 4016 outputs power and runs, it can drive the transmission cabin 4015 to output and run, so that the striking rod 4017 can effectively rotate the force block 4012 to achieve a vibration effect after hitting, so that the pores can be shaken off to achieve a dredging effect.

[0067] The stirring and mixing component 5 includes a mixing chamber 501, a connecting cell body 502, an extrusion pipe 503, a liquid inlet valve 504, an inner lining ring 505, an inner lining guide wheel 506, a helical gear ring 507, a helical gear 508, a transmission case 509, a gear motor 5010, a center column 5011, a stirring rod 5012, a bearing sleeve 5013 and an extrusion auger 5014. The mixing chamber 501 is sleeved and connected to the inner side of the annular sleeve 105. The top of the mixing chamber 501 is provided with a connecting cell body 502, the bottom of the mixing chamber 501 is provided with an extrusion pipe 503, and the upper side of the mixing chamber 501 is provided with a sleeve-mounted liquid inlet. Valve 504, an inner side of the mixing bin 501 is provided with an inner lining ring 505, and the inner side of the inner lining ring 505 is provided with an inner lining guide wheel 506, a bevel gear ring 507 is provided below the lining guide wheel 506, and a bevel gear 508 is provided below one end of the bevel gear ring 507, and a transmission case 509 connected to the output end of the gear motor 5010 is provided at one end of the bevel gear 508, a center column 5011 is provided above the lining guide wheel 506, and a stirring rod 5012 is provided on the outer side of the center column 5011, and the output end of the center column 5011 passes through the bearing sleeve 5013 and is connected to the extrusion auger 5014.

[0068] The screened material is input into the connecting pool body 502 and injected into the mixing bin 501, and the processed liquid raw materials are injected through the liquid inlet valve 504. Then the gear motor 5010 is used to output power to drive the output end to operate, so that the gear motor 5010 can drive the transmission case 509 to output and run, and then drive the helical gear 508 to mesh and run, and then drive the helical gear ring 507 to run. In this way, the lining guide wheel 506 rotates on the lining ring 505, so that the center column 5011 and the stirring rod 5012 rotate to mix and form the materials. After the materials are mixed and formed, the center column 5011 can drive the extrusion auger 5014 under the bearing sleeve 5013 to rotate after outputting and running.

[0069] Example 5

[0070] according to Figure 1-9 As shown, this embodiment provides a method for preparing a deoxidizing, low-fluorine, and high-efficiency slagging agent for steelmaking, comprising the following steps:

[0071] The raw materials to be processed are fed into the feed port 203 in batches through the feed port 203 above the top cover 202, and the weighing component of the equipment weighs the raw materials. When the weighing reaches the required level, the pneumatic telescopic rod 204 on the top cover 202 outputs power to drive the output end to operate, so that the connecting plate 205 drives the matching valve plate 206 to open the top cover 202, and after opening, the raw materials are fed into the processing chamber 201.

[0072] The first motor 209 is used to output power to drive the output end to operate, thereby driving the grinding gear set 2010 to rotate and cooperate with the second meshing gear set 2011 to perform preliminary grinding of the raw materials. After grinding, the materials are input into the fine grinding chamber 2012 under the action of the middle inclined piece 207. The second motor 2014 is used to output power to drive the output end to operate, so that the pulley set 2013 is driven to drive the fine grinding roller rod 2015 to perform fine grinding on the raw materials. After processing, the materials are input into the upper inclined pipe 302 through the processing chamber 201, and the materials are input into the drying chamber 301.

[0073] The material falls onto the centrifugal table 309. During centrifugal operation, the centrifugal motor 307 below the bucket cabin 303 outputs power to drive the output end to operate, driving the arc-shaped bar 308 to cooperate with the centrifugal table 309 to rotate at high speed. According to the quality of different materials, they are driven to divert centrifugal motion. The annular structure channel formed by the inner porous column 3015, the inner oblique piece 3016, the middle porous column 3017, the middle oblique piece 3018, the outer porous column 3020, the outer oblique piece 3021 and the drying chamber 301 is used to divert and introduce materials of different qualities.

[0074] The inlet fan 3025 and the exhaust fan 306 are turned on to output power to drive the output end to operate, so that the air circulates, so that the air enters the heating chamber 3024 and is heated by the heating rod 3026. After the air is heated, the hot air is accelerated by the air pump 3023 and then the diverter valve 3027 is opened to input the hot air through the hose 3028 at the output end to the inner hole column 3015, the middle hole column 3017, and the outer hole column 3020 to achieve heating and drying treatment for the material. When blockage occurs, the output end on the stage inserting platform 3011 is used to output power to drive the electric gear 3013 to output and operate, so as to drive the middle hole column 3017 and the outer hole column 3020 to deviate at a limited angle to achieve the effect of unblocking.

[0075] After drying, the material is input into the lower inclined pipe 304 through the rotation of the arc bar 308, and then input into the lower pipe 2016 after the output of the electric auger 3010. When the material accumulates in the lower pipe 2016, the bearing partition 404 outputs power to drive the output end to operate, so that the electric meshing gear 405 is engaged and drives the threaded chamber 406 and the threaded bar 407 to spirally operate, driving the opening and closing valve plate 408 to open the bolt valve chamber 401, allowing the material to be input into the screening chamber 403 below the ferrule shell 402;

[0076] The vibration motor 4010 on the side of the shock-absorbing base frame 409 outputs power to generate vibration force, so that the upper sieve plate 4013 and the lower sieve plate 4014 on the inclined sleeve plate 4011 achieve a screening effect under the action of vibration. When the upper sieve plate 4013 and the lower sieve plate 4014 are blocked, the transmission motor 4016 outputs power to drive the transmission cabin 4015 to output and operate, so that the striking rod 4017 rotates the force-bearing block 4012, achieving the effect of vibration after striking, thereby clearing the blockage;

[0077] The screened material is input into the connecting cell body 502 and injected into the mixing chamber 501. The processed liquid raw material is injected through the liquid inlet valve 504. Then, the gear motor 5010 is used to output power, driving the transmission box 509 to output and operate, driving the helical gear 508 to mesh and operate, and then driving the helical gear ring 507 to operate, driving the liner guide wheel 506 to rotate on the liner ring 505, so that the center column 5011 and the stirring rod 5012 rotate to mix and form the material. After the material is mixed and formed, the center column 5011 drives the extrusion auger 5014 below the bearing sleeve 5013 to rotate;

[0078] When ball pressing is required, the output power of the output end above the horizontal cabin 1011 is used to drive the pneumatic valve plate 1012 at the output end to open. After the output of the extrusion auger 5014 is running, the material is input to the pressure rod 1016 inside the pressure cabin 1010. The power output of the pneumatic cylinder 1013 causes the pusher 1014 to push the material to run.

[0079] The pressure motor 1015 outputs power to drive the first meshing gear set 1017 to run in opposite directions, so that the pressure rod 1016 performs ball pressing processing on the material. After the ball pressing processing, the product falls onto the conveyor belt 109, and the power is output through the lower frame 103 to drive the driving roller rod 108 to output and run, driving the conveyor belt 109 to run, and the product is run to the target location to complete the processing.

[0080] The present invention uses calcium carbide to perform deoxidation and produce alkaline oxides, which is beneficial to generating foamed slag. Aluminum oxide can reduce the melting point of refined slag, improve its fluidity, and also increase the slagging speed to a certain extent, reducing the slagging time. At the same time, the deoxidation effect is taken into account, and the oxygen content in the slag is directly removed during slagging, thereby achieving the deoxidation effect of molten steel through diffusion deoxidation, shortening the smelting cycle, accelerating the refining and smelting rhythm, and ultimately improving the purity of molten steel and reducing the inclusion content in the steel. The present invention utilizes an air pump 3023, a heating chamber 3024, an air inlet fan 3025, a heating rod 3026, a diverter valve 3027, and a hose 3028 to heat the air, in conjunction with the non-woven fabric cover 305 and the exhaust fan 306, to provide uninterrupted hot air flow. Simultaneously, after the centrifugal motor 307, the curved bar 308, and the centrifugal table 309 perform centrifugal operation, different materials are centrifugally spun according to their mass and directed into the three annular chambers between the inner pore column 3015, the middle pore column 3017, the outer pore column 3020, and the drying chamber 301. Guided by the outer oblique blades 3021, the middle oblique blades 3018, and the inner oblique blades 3016, the materials are synchronously dropped and dried, thereby improving the quality of the products processed from the raw materials. Furthermore, the present invention utilizes a limited angle offset under the action of the grading table 3011, the rolling guide wheel 3012, and the electric gear 3013 to prevent clogging.

[0081] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A deoxidation, low-fluorine, high-efficiency slagging agent for steelmaking, characterized in that: It contains the following components in a mass ratio: calcium carbide (CaC): 5-25 parts, aluminum oxide : 40-55 parts, calcium fluoride : 15-40 parts, calcium aluminate powder: 3-8 parts, silicon carbide SiC: 1-3 parts, calcium silicon alloy Ca-Si: 0.5-2 parts, silicon dioxide : 3-8 parts, total iron‌TFe: 1-1.5 parts, magnesium oxide‌MgO: 1-3 parts, sulfur‌S: 0.1-0.15 parts, phosphorus‌P: 0.03-0.06 parts.

2. The deoxidation, low-fluorine, high-efficiency slagging agent for steelmaking according to claim 1, characterized in that: The particle size of the calcium carbide CaC is less than 5 mm, and the calcium fluoride The particle size is less than 5mm, the aluminum oxide The particle size is less than 5mm.

3. A manufacturing device for a deoxidizing, low-fluorine, and high-efficiency slag-forming agent for steelmaking, applied to a deoxidizing, low-fluorine, and high-efficiency slag-forming agent for steelmaking according to any one of claims 1 to 2, characterized in that: The invention comprises a frame ball pressing and discharging kit (1) and a stirring and mixing component (5), wherein a plug-in mounted feed crushing and fine grinding component (2) is provided above both ends of the frame ball pressing and discharging kit (1), a material drying mechanism (3) connected to the feed crushing and fine grinding component (2) is plugged into the inner side of one end of the frame ball pressing and discharging kit (1), a sleeve-connected screening mechanism (4) is provided at the output end of the feed crushing and fine grinding component (2), and a sleeve-connected stirring and mixing component (5) is provided at the output end of the screening mechanism (4).

4. The manufacturing equipment of a deoxidation low-fluorine high-efficiency slagging agent for steelmaking according to claim 3, characterized in that: The frame ball pressing and discharging kit (1) comprises a pad (101), a shock-absorbing base plate (102), a lower frame (103), an inner lining plate (104), an annular sleeve plate (105), an upper frame (106), an end beam (107), a driving roller rod (108), a conveyor belt (109), a pressure cabin shell (1010), a sleeve transverse cabin (1011), a pneumatic valve plate (1012), a pneumatic cylinder (1013), a pusher (1014), a pressure motor (1015), a pressure rod (1016) and a first meshing gear set (1017), the top side of the pad (101) is provided with a bolt-connected shock-absorbing base plate (102), and the upper four sides of the shock-absorbing base plate (102) are bolt-connected with a lower frame (103), and the inner side of the lower frame (103) is provided with an inner lining plate (104), the upper inner side of the lower frame (103) is provided with a bolt-connected annular sleeve plate (105), and the upper outer side of the lower frame (103) is provided with a bolt-connected The upper frame (106) is provided with an end-to-end beam (107) at the top of the upper frame (106), the output end of the lower frame (103) is provided with a driving roller rod (108), the output end of the driving roller rod (108) is provided with a conveyor belt (109) installed around, the middle inner side of the lower frame (103) is provided with a pressure cabin shell (1010) connected by bolts, and a set transverse cabin (1011) is provided above one end of the pressure cabin shell (1010), and the set transverse cabin The output end of (1011) is provided with a pneumatic valve plate (1012), the upper inner side of the pressure chamber (1010) is provided with a sleeve-mounted pneumatic cylinder (1013), and the output end of the pneumatic cylinder (1013) is provided with a push piece (1014), a pressure motor (1015) is provided on one side of the pressure chamber (1010), and the output end of the pressure motor (1015) is provided with a pressure rod (1016) that is transmission-connected to the first meshing gear set (1017).

5. The manufacturing equipment of a deoxidation low-fluorine high-efficiency slagging agent for steelmaking according to claim 4, characterized in that: The feeding, crushing and fine grinding component (2) comprises a processing chamber (201), a top cover (202), a feeding port (203), a pneumatic telescopic rod (204), a connecting plate (205), a matching valve plate (206), a middle inclined plate (207), a lower inclined plate (208), a first motor (209), a crushing gear set (2010), a second meshing gear set (2011), a fine grinding chamber (2012), a pulley set (2013), a second motor (2014), a fine grinding roller (2015) and a lower tube (2016), the processing chamber (201) is arranged on the top end side of the end-to-end beam (107), the top end of the processing chamber (201) is provided with a bolted top cover (202), and a sleeve-mounted feed port (203) is provided above the top cover (202), and pneumatic telescopic rods (204) are provided on the outer sides of the top cover (202), and the pneumatic telescopic rods (204) are provided on the outer sides of the top cover (202). 4) is provided with a connecting plate (205) at the output end, a matching valve plate (206) is provided on the inner side of the connecting plate (205), a middle inclined plate (207) is provided on the inner side of the middle of the processing chamber (201), a lower inclined plate (208) is provided on the inner bottom side of the processing chamber (201), a sleeve-mounted lower pipe (216) is provided at the bottom end of the processing chamber (201), and a first motor ( 209), and the output end of the first motor (209) is provided with a crushing gear set (210) which is transmission-connected to the second meshing gear set (211); a fine grinding chamber (212) is provided inside the processing chamber (201), and a fine grinding roller (215) connected to the output end of a pulley set (213) is provided inside the fine grinding chamber (2012); and a second motor (214) is provided at the input end of the pulley set (2013).

6. The manufacturing equipment of a deoxidation low-fluorine high-efficiency slagging agent for steelmaking according to claim 5, characterized in that: The material drying mechanism (3) comprises a drying chamber (301), an upper inclined tube (302), a bucket-shaped chamber (303), a lower inclined tube (304), a non-woven fabric cover (305), an exhaust fan (306), a centrifugal motor (307), an arc strip (308), a centrifugal table (309), an electric auger (3010), a grading table (3011), a rolling guide wheel (3012), an electric gear (3013), a gear cover (3014), an inner hole column (3015), an inner oblique plate (3016), a middle hole column (3017), a middle oblique plate (3018), a middle tooth ring guard plate (3019), an outer hole column (3020), an outer oblique plate (3021), an outer tooth ring guard plate (3022), an air pump (3023), and a heat exchanger (3024). ), a heating chamber (3024), an air inlet fan (3025), a heating rod (3026), a diverter valve (3027) and a hose (3028), the drying chamber (301) is arranged on the inner side of one end of the end-to-end beam (107), an upper inclined pipe (302) is provided on one side of the drying chamber (301), a bucket-shaped chamber (303) is provided at the bottom end of the drying chamber (301), a non-woven fabric cover (305) is provided above the drying chamber (301), and an exhaust fan (306) is provided above one end of the non-woven fabric cover (305), a centrifugal motor (307) is provided at the bottom end of the bucket-shaped chamber (303), and the centrifugal motor ( The output end of the drying chamber (307) is provided with an arc-shaped bar (308), the top of the arc-shaped bar (308) is provided with a centrifugal table (309), the output end of the lower inclined tube (304) is provided with an electric auger (3010), the lower inner side of the drying chamber (301) is provided with a step-through table (3011), and the inner groove of the step-through table (3011) is provided with a rolling guide wheel (3012), the output end of the step-through table (3011) is provided with an electric gear (3013), the upper outer end of the step-through table (3011) is provided with a gear cover (3014), the upper inner end of the step-through table (3011) is provided with an inner hole column (3015), and the outer side of the inner hole column (3015) is provided with an inner oblique piece (3013). 016), a middle hole column (3017) is provided above the middle of the step inserting platform (3011), a middle oblique piece (3018) is provided on the outer side of the middle hole column (3017), a middle tooth ring guard piece (3019) is provided on the inner side below the middle hole column (3017), an outer hole column (3020) is provided above the outer end of the step inserting platform (3011), an outer oblique piece (3021) is provided on the outer side of the outer hole column (3020), an outer tooth ring guard piece (3022) is provided on the inner side below the outer hole column (3020), an air pump (3023) is provided at both ends below the drying and drying cabin (301), and a heating cabin (3024) is provided at the outer end of the air pump (3023).The heating chamber (3024) is provided with air inlet fans (3025) at both ends, a heating rod (3026) is provided inside the heating chamber (3024), a diverter valve (3027) is provided at the output end of the air pump (3023), and a hose (3028) is provided at the output end of the diverter valve (3027) for sleeve connection with the inner hole column (3015), the middle hole column (3017), and the outer hole column (3020), and the inclination angles of the outer oblique piece (3021), the middle oblique piece (3018), and the inner oblique piece (3016) decrease in sequence.

7. The manufacturing equipment of a deoxidizing, low-fluorine, high-efficiency slagging agent for steelmaking according to claim 6, characterized in that: The screening mechanism (4) comprises a bolt valve cabin (401), a sleeve shell (402), a screening cabin (403), a bearing partition (404), an electric meshing gear (405), a threaded cabin (406), a threaded strip (407), an opening and closing valve plate (408), a shock-absorbing base frame (409), a vibration motor (4010), an inclined sleeve plate (4011), a force block (4012), an upper screen plate (4013), a lower screen plate (4014), a transmission cabin (4015), a transmission motor (4016), and a striking Rod (4017) and temporary storage cabin (4018), the bolt valve cabin (401) is bolted to the bottom end of the lower tube (2016), a card sleeve shell (402) is provided below the bolt valve cabin (401), a screening cabin (403) installed by card connection is provided below the card sleeve shell (402), a bearing partition (404) is provided on the inner side of the bolt valve cabin (401), and an electric meshing gear (405) is provided at the output end of the bearing partition (404), and the electric meshing gear (405) is provided. 05) is provided with a threaded chamber (406) at the output end thereof, and a threaded strip (407) is provided on the inner side of the threaded chamber (406), an opening and closing valve plate (408) is provided at one end of the threaded strip (407), a shock-absorbing base frame (409) is provided on the inner bottom side of the bearing partition (404), and a vibration motor (4010) is provided on the side of the shock-absorbing base frame (409), an inclined sleeve plate (4011) is provided on the inner side of the screening chamber (403), and a A force-bearing block (4012) is provided, an upper sieve plate (4013) is provided on the inner side above the inclined sleeve plate (4011), a lower sieve plate (4014) is provided on the inner side below the inclined sleeve plate (4011), a transmission cabin (4015) connected to the output end of the transmission motor (4016) is provided on the inner side of the lower sieve plate (4014), a striking rod (4017) is provided at the output end of the transmission cabin (4015), and a temporary storage cabin (4018) is provided on the outer side of the screening cabin (403) in a sleeve-mounted manner.

8. The manufacturing equipment of a deoxidation low-fluorine high-efficiency slagging agent for steelmaking according to claim 7, characterized in that: The stirring and mixing component (5) comprises a mixing chamber (501), a connecting cell body (502), an extrusion pipe (503), a liquid inlet valve (504), an inner lining ring (505), an inner lining guide wheel (506), a bevel gear ring (507), a bevel gear (508), a transmission case (509), a gear motor (5010), a center column (5011), a stirring rod (5012), a bearing sleeve (5013) and an extrusion auger (5014). The mixing chamber (501) is sleeve-connected to the inner side of the annular sleeve (105). The top of the mixing chamber (501) is provided with a connecting cell body (502). The bottom of the mixing chamber (501) is provided with an extrusion pipe (503). The upper side of the mixing chamber (501) is provided with a sleeve-mounted inlet valve. A liquid valve (504) is provided, an inner lining ring (505) is provided on the inner side of the mixing bin (501), and an inner lining guide wheel (506) is provided on the inner side of the inner lining ring (505), a helical gear ring (507) is provided below the inner lining guide wheel (506), and a helical gear (508) is provided below one end of the helical gear ring (507), and a transmission case (509) connected to the output end of the gear motor (5010) is provided at one end of the helical gear (508), a central column (5011) is provided above the inner lining guide wheel (506), and a stirring rod (5012) is provided on the outer side of the central column (5011), and the output end of the central column (5011) passes through the bearing sleeve (5013) and is connected to the extrusion auger (5014).

9. A method for preparing a deoxidizing, low-fluorine, and high-efficiency slagging agent for steelmaking, using the manufacturing equipment of the deoxidizing, low-fluorine, and high-efficiency slagging agent for steelmaking according to claim 8, characterized in that: The following steps are involved: S1: The raw materials to be processed are fed into the feed port (203) in batches through the feed port (203) above the top cover (202), so that the weighing component of the equipment weighs the raw materials. When the weighing reaches the required level, the pneumatic telescopic rod (204) on the top cover (202) is used to output power to drive the output end to operate, so that the connecting plate (205) drives the matching valve plate (206) to open the top cover (202), and after opening, the raw materials are fed into the processing chamber (201); S2: using the first motor (209) to output power to drive the output end to operate, thereby driving the crushing gear set (2010) to rotate and cooperate with the second meshing gear set (2011) to perform preliminary crushing on the raw materials. After crushing, the materials are input into the fine grinding chamber (2012) under the action of the middle inclined plate (207). Using the second motor (2014) to output power to drive the output end to operate, so that the pulley set (2013) drives the fine grinding roller (2015) to perform fine grinding on the raw materials. After processing, the materials are input into the upper inclined pipe (302) through the processing chamber (201), and the materials are input into the drying chamber (301); S3: The material falls onto the centrifugal table (309). During centrifugal operation, the centrifugal motor (307) below the bucket-shaped cabin (303) outputs power to drive the output end to operate, driving the arc-shaped bar (308) to cooperate with the centrifugal table (309) to rotate at high speed. According to the quality of different materials, the materials are driven to conduct diversion centrifugal movement, and the materials of different qualities are diverted and introduced through the annular structure channel formed by the inner hole column (3015), the inner inclined plate (3016), the middle hole column (3017), the middle inclined plate (3018), the outer hole column (3020), the outer inclined plate (3021) and the drying chamber (301); S4: The inlet fan (3025) and the exhaust fan (306) are turned on to output power to drive the output end to operate, so that the air circulates, so that the air enters the heating chamber (3024) and is heated by the heating rod (3026). After the air is heated, the hot air is output and accelerated through the air pump (3023), and then the diverter valve (3027) is opened and inputted into the inner hole column (3015), the middle hole column (3017), and the outer hole column (3020) through the hose (3028) at the output end to achieve heating and drying treatment for the material. When blockage occurs, the output end on the stage inserting table (3011) is used to output power to drive the electric gear (3013) to output and operate, so as to drive the middle hole column (3017) and the outer hole column (3020) to deviate at a limited angle, thereby achieving the effect of unblocking. S5: After drying, the material is input into the lower inclined tube (304) through the rotation of the arc strip (308), and is input into the lower tube (2016) after the output operation of the electric auger (3010). When the material is gathered in the lower tube (2016), the bearing partition (404) outputs power to drive the output end to operate, so that the electric meshing gear (405) is meshed and driven to drive the threaded chamber (406) and the threaded strip (407) to spirally operate, driving the opening and closing valve plate (408) to open the bolt valve chamber (401), so that the material is input into the screening chamber (403) below the ferrule shell (402); S6: The vibration motor (4010) on the side of the shock-absorbing base frame (409) is used to output power to generate vibration force, so that the upper screen plate (4013) and the lower screen plate (4014) on the inclined sleeve plate (4011) achieve the effect of screening under the action of vibration. The screened material is input into the connecting pool body (502) and injected into the mixing bin (501). The processed liquid raw material is injected through the liquid inlet valve (504). Then, the gear motor (5010) is used to output power, which drives the upper screen plate (4013) and the lower screen plate (4014) on the inclined sleeve plate (4011). The dynamic transmission chassis (509) outputs and operates, driving the helical gear (508) to mesh and operate, and then driving the helical gear ring (507) to operate, driving the lining guide wheel (506) to rotate on the lining ring (505), so that the central column (5011) and the stirring rod (5012) rotate to mix and form the materials. After the materials are mixed and formed, the central column (5011) drives the extrusion auger (5014) below the bearing sleeve (5013) to rotate; S7: When the ball pressing process is required, the output power of the output end above the sleeve transverse cabin (1011) is used to drive the pneumatic valve plate (1012) at the output end to open, and after the output of the extrusion auger (5014) is operated, the material is input to the pressure rod (1016) inside the pressure cabin shell (1010), and the power output through the pneumatic cylinder (1013) causes the pusher (1014) to push the material to operate; S8: Use the pressure motor (1015) to output power, drive the first meshing gear set (1017) to run in the opposite direction, so that the pressure rod (1016) performs ball pressing processing on the material. After the ball pressing processing, the product falls onto the conveyor belt (109), and the lower frame (103) outputs power to make the driving roller rod (108) output and run, driving the conveyor belt (109) to run, and the product is moved to the target location to complete the processing.

10. The method for preparing a deoxidizing, low-fluorine, high-efficiency slagging agent for steelmaking according to claim 9, characterized in that: When the upper sieve plate (4013) and the lower sieve plate (4014) are blocked, the transmission motor (4016) is used to output power to drive the transmission cabin (4015) to output operation, so that the striking rod (4017) rotates the force block (4012), achieving the effect of generating vibration after striking, thereby clearing the block.

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