Magnesium ball preparation method beneficial to efficient magnesium preparation and magnesium ball preparation system

Abstract

The invention belongs to the technical field of magnesium ball preparation, and particularly relates to a magnesium ball preparation method beneficial to efficient magnesium preparation. According to the method, in the process of collecting magnesium balls in a unified capacity, the variable quantity of the distance between ball pressing rollers is predicted in time according to the weight value of the magnesium balls; when the weight value of the magnesium ball exceeds the standard due to the increase of the roll gap value, the ball press machine can automatically adjust the roll gap to the standard value range based on the weight exceeding value of the collected magnesium ball. The pressure value of the ball pressing roller is in a stable standard state before subsequent ball pressing, so that the hardness, the density and the fragility degree of the pressed magnesium balls reach or are higher than the standard level, the magnesium balls prepared by the ball pressing machine through the method are uniformly heated in the magnesium manufacturing process, the efficiency of slagging-off operation is improved, and the service life of the magnesium balls is prolonged. And moreover, the magnesium preparation period, the energy consumption and the material-magnesium ratio are all reduced, and the production benefit is obviously improved.

Description

Technical Field

[0001] The present application belongs to the technical field of magnesium ball preparation, and in particular relates to a magnesium ball preparation method and a magnesium ball preparation system that are beneficial to efficient magnesium production. Background Art

[0002] In the process of pijiang process for magnesium refining, raw materials such as ferrosilicon, calcined dolomite (referred to as calcined white), fluorite powder, binder, etc. are prepared in a specific proportion, mixed, ground into powder, and then pressed into ellipsoidal pellets to produce magnesium. The pellets are sent to the magnesium furnace for high-temperature calcination to gasify the magnesium, and then cooled to collect crude magnesium oxide. Experiments have shown that spherical magnesium pellets are more conducive to reducing crude magnesium at high temperatures than magnesium pellets in other forms such as prisms, cones, irregular particles or powders. Therefore, the use of spherical magnesium pellets to produce magnesium is conducive to shortening the magnesium production cycle, improving the efficiency and amount of magnesium production, and significantly improving production efficiency.

[0003] In the prior art, magnesium balls are usually prepared by a pressing method, in which the powdered mixed ingredients are centrally transferred to a ball press machine with a spherical pressing mold, and the powder entering the hemispherical die cavity is centrally extruded. Under the action of concentrated pressure and a binder, the powdered ingredients are pressed into spherical magnesium agglomerates. The magnesium agglomerates are collected in batches at the discharge port of the ball press machine and then transferred to a magnesium furnace for magnesium production. For example, a Chinese utility model with publication number CN215365925U discloses a light-burned magnesium oxide ball pressing device, which includes a shell, the upper part of which is connected to a feed port, and the interior of which is provided with a ball pressing mechanism, a material receiving plate and a collecting drawer from top to bottom; the ball pressing mechanism includes two ball pressing rollers that rotate relative to each other, the ball pressing rollers are connected to a driving mechanism, and the ball pressing rollers are provided with extrusion grooves that can cooperate with each other, and the upper and lower parts of the ball pressing rollers are respectively opposite to the feed port and the material receiving plate, the material receiving plate is arranged to be inclined downward, and is provided with a plurality of leakage holes, and the collecting drawer is located below the material receiving plate for receiving dust falling from the leakage holes. The utility model provides a leakage hole on the receiving plate, and the powder falling off the ball falls down from the leakage hole into the collecting bin, and the powder is recycled through the collecting bin. However, in actual use, the device is not convenient for timely adjusting the ball making pressure. As the use time continues to increase, the roller gap (i.e. the spacing between the ball pressing rollers) gradually increases after the ball pressing rollers are worn, resulting in the inability to meet the pressure required for ball making, resulting in different compactness indicators of the pressed pellets. Once a large number of pellets are produced with insufficient compactness, the pellets are very likely to be broken due to collision and extrusion during the process of discharging, collecting and transporting, causing the pellets entering the magnesium making furnace to be mixed with magnesium ball fragments and powder, ultimately resulting in uneven heating of the magnesium making pellets in the magnesium making furnace, thereby causing problems such as low magnesium making efficiency and material-magnesium ratio, reducing production benefits and increasing production costs. Summary of the invention

[0004] Based on the above-mentioned background technical needs, the present application provides a method for preparing magnesium balls that is conducive to efficient magnesium production, which can solve the problem that the prior art is inconvenient to timely adjust the ball making pressure. As the use time continues to increase, the gap between the ball pressing roller gradually increases after wear, resulting in the inability to meet the pressure required for ball making, resulting in different compactness indicators of the pressed pellets. Once a large number of pellets produced have insufficient compactness, the pellets are very likely to be broken due to collision and extrusion during the discharging, collection and transportation process, causing the pellets entering the magnesium making furnace to be mixed with magnesium ball fragments and powder, ultimately resulting in uneven heating of the magnesium making pellets in the magnesium making furnace, thereby causing problems such as low magnesium making efficiency and material-magnesium ratio.

[0005] In order to achieve the above purpose, the technical solution of this application is:

[0006] A method for preparing magnesium balls that is beneficial to efficient magnesium production comprises the following steps:

[0007] Step 1: Use a ball press to prepare magnesium balls, collect magnesium balls based on a specified capacity, obtain the weight value of the magnesium balls of the specified capacity and the spacing value of the ball press rollers after the ball press produces the magnesium balls of the specified capacity, and establish a database based on the corresponding relationship between the weight value and the spacing value;

[0008] Step 2: obtaining the weight value of the magnesium ball based on the specified capacity in real time, and obtaining the spacing value of the ball pressing roller to be adjusted based on the database;

[0009] Step 3: adjusting the spacing of the ball pressing rollers based on the spacing value to be adjusted, so that the pressure value of the ball press reaches the corresponding preparation standard of magnesium balls;

[0010] Preferably, the database includes a first database and a second database, the first database includes the corresponding standard weight values ​​of the magnesium balls and the standard spacing values ​​of the ball pressing rollers, and the second database includes the corresponding weight increase or decrease range values ​​of the magnesium balls and the spacing values ​​of the ball pressing rollers to be adjusted.

[0011] The present application also discloses a magnesium ball preparation system, which is applied to the magnesium ball preparation method, and the magnesium ball preparation system includes a ball press, a weighing device and an electronic control device; wherein the ball press includes a guide hopper, at least a pair of ball pressing rollers parallel and rotatably arranged in the guide hopper, and a translation drive mechanism, a roller gap is formed between the pair of the ball pressing rollers, at least a part of the translation drive mechanism is transmission-connected with at least one of the pair of the ball pressing rollers, and the translation drive mechanism is used to drive the pair of the ball pressing rollers to move relative to each other to increase or decrease the roller gap; the weighing device includes a collecting trough, a weighing sensor, and a capacity sensor, the collecting trough is arranged along the discharging direction of the ball pressing roller, and the capacity sensor is arranged relative to the opening of the collecting trough, and is used to obtain the capacity of the magnesium balls in the collecting trough; the weighing sensor is arranged on the side of the collecting trough away from the guide hopper, and is used to obtain the weight of the magnesium balls in the collecting trough; the electronic control device is communicatively connected with the translation drive mechanism, the weighing sensor and the capacity sensor respectively.

[0012] Preferably, the electronic control device includes at least one storage device and at least one processor, the processor is communicatively connected with the translation drive mechanism, the weighing sensor and the capacity sensor respectively, the storage device stores instructions executable by the processor, and the instructions are executed by the processor to enable the processor to execute the magnesium ball preparation method.

[0013] Preferably, along the axial direction of the ball pressing roller, mounting seats are respectively provided on both sides of the surface of the guide hopper of the ball pressing roller, and the translation drive mechanism includes a driver and at least one pair of sliders. Along a first direction, a pair of sliders are movably connected to the mounting seats, and the sliders are respectively connected to the ball pressing roller for relative rotation. The driver is in transmission cooperation with the sliders, and the driver is communicatively connected with the electronic control device. When the driver drives the sliders to move along the first direction, the roller gap decreases; when the driver drives the sliders to move in the opposite direction of the first direction, the roller gap increases.

[0014] Preferably, the ball press machine further comprises a rolling drive mechanism, which comprises at least one pair of drive motors, wherein the pair of drive motors are respectively rotatably connected to the ball pressing rollers, and at least one of the drive motors is fixedly connected to any one of the sliders.

[0015] Preferably, the rolling drive mechanism also includes at least one pair of planetary gear sets, the planetary gear sets include a planetary carrier and a ring gear, the ring gears are coaxially fixedly connected to one end of the ball pressing roller, the planetary carrier is provided with a sun gear and a plurality of planetary gears circumferentially arranged around the sun gear, the planetary gears, the sun gear and the ring gear are meshed with each other; the driving shafts of a pair of the driving motors are coaxially connected to the sun gears of a pair of the planetary gear sets.

[0016] Preferably, the guide hopper is provided with a first discharge port and a second discharge port in sequence and spaced apart along the direction of gravity, and the collecting trough is located below the first discharge port; in the guide hopper, a guide trough is obliquely provided between the first discharge port and the second discharge port, one end of the guide trough is connected to the first discharge port, and the other end extends toward the ball pressing roller away from the first discharge port, and a screening partition is provided on the guide trough relative to the first discharge port, and a plurality of sieve holes are provided in the screening partition along the direction of gravity.

[0017] Preferably, along the feeding direction of the ball pressing roller, a feed port is opened on one side of the guide hopper, and a first feeder is arranged at the feed port, and the discharge end of the first feeder extends to between the ball pressing rollers; a second feeder is connected to the second discharge port, and the discharge end of the second feeder extends to the feed end of the first feeder.

[0018] Preferably, a dust removal port is provided on one side of the guide hopper, adjacent to the first discharge port, the dust removal port is connected to a dust removal pipe, and a dust removal fan is provided at one end of the dust removal pipe away from the dust removal port.

[0019] By adopting the above technical solution, compared with the prior art, the present application has at least the following beneficial effects:

[0020] In the process of collecting magnesium balls at a fixed capacity, the change in the roller gap between the ball pressing rollers is timely predicted according to the change in the weight value of the magnesium balls, and the spacing between the ball pressing rollers is adjusted according to the changing parameters to ensure that the pressure value of the ball pressing rollers is in a stable standard state, so that the hardness, density and fragility of the pressed magnesium balls are at a higher level than the standard. The magnesium balls prepared by this method are heated evenly during the magnesium production process, which is not only beneficial to improving the efficiency of the slag removal operation, but also reduces the magnesium production cycle, energy consumption and material-magnesium ratio, and the production efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the magnesium ball preparation system in the embodiment.

[0022] Figure 2 It is a schematic diagram of the local structure of the ball press in the embodiment.

[0023] Figure 3 It is a partial cross-sectional view AA of the ball press in the embodiment.

[0024] Figure 4 It is the partial cross-sectional view BB of the ball press in the embodiment.

[0025] Figure 5 It is a partial cross-sectional view CC of the ball press in the embodiment.

[0026] Figure 6 It is a structural schematic diagram of the weighing equipment in the embodiment.

[0027] Figure 7 This is a diagram of the statistical model of experimental data established based on the first database.

[0028] In the figure: a ball press machine 10, a guide hopper 11, a connecting shaft 111, a bearing 112, a mounting seat 113, a first discharge port 114, a second discharge port 115, a guide trough 116, a screening area 1161, a feed port 117, a dust removal port 118, a dust removal pipe 119, a ball press roller 12, a translation drive mechanism 13, a driver 131, a slider 132, a rolling drive mechanism 14, a drive motor 141, a planetary gear set 142, a planetary carrier 1421, a sun gear 1422, a planetary gear 1423, a ring gear 1424, a weighing device 20, a collecting trough 21, a weighing sensor 22, a capacity sensor 23, a first feeder 30, a second feeder 40, a dust removal fan 50, a powder collection box 51, and a third feeder 60. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The technical solution of the present application will be further described below in conjunction with the drawings of the embodiments of the present application, and the present application is not limited to the following specific implementation methods.

[0030] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present application, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "rear", "top", "bottom" and the like indicating directions or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present patent, and for those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0031] The following is combined with Figure 1 To Attachment Figure 7And specific embodiments further describe the present application in detail.

[0032] The present application discloses a method for preparing magnesium balls which is beneficial for efficient magnesium production, and specifically comprises the following steps:

[0033] Step 1: Establishing a database: Put the prepared powder into a ball press, use the ball press to prepare magnesium balls for multiple tests, and collect a number of magnesium balls according to a set standard capacity, weigh each portion of magnesium balls collected according to the set capacity, and measure the spacing value of the ball press rollers after each production of the above standard capacity of magnesium balls, and establish a database based on the above several weight values ​​and the spacing values ​​of the ball press rollers corresponding to each weight value;

[0034] Step 2: Obtain the spacing value of the ball pressing rollers to be adjusted: Use the ball pressing machine to formally prepare magnesium balls, collect the magnesium balls of the standard volume, weigh them, and after obtaining the weight value of the magnesium balls, output the spacing value of the ball pressing rollers to be adjusted according to the database;

[0035] Step 3: Adjust the spacing of the ball pressing rollers: adjust the spacing of the ball pressing rollers according to the output spacing value to be adjusted, so that the pressure value of the ball press reaches the corresponding preparation standard value for preparing magnesium balls.

[0036] Specifically, the implementation of the above-mentioned magnesium ball preparation method also requires the following steps, wherein:

[0037] Step one includes:

[0038] Step S11, preparing materials before ball pressing: grinding dolomite (as magnesium-containing oxidant): ferrosilicon (as reducing agent): fluorite (as catalyst) in a ratio of (80-100): (13-16): (1-3) until they are crushed and mixed into powder, wherein the particle size of the dolomite is not greater than 200 meshes;

[0039] Step S12, debugging the ball press machine before ball pressing: adjusting the spacing of the ball pressing rollers to the standard condition required for ball pressing, so that the spacing value (roller gap value) of the ball pressing rollers reaches 1.6-2 cm, and the linear pressure value of the ball pressing machine reaches 16-18 MPa;

[0040] Step S13, taking 3 tons of the mixed powder in step S11, dividing them into three portions and feeding them into a ball press at a uniform speed for ball making, and continuously collecting at least 10 portions of magnesium balls for each portion of the powder, each portion of magnesium balls being 0.5 cubic meters;

[0041] Step S14, a transport simulation experiment is performed for each portion of magnesium balls collected, and the magnesium balls are transported 1 km from the collection point. During the transportation, the collection bucket containing the magnesium balls is carried by a forklift. When the collection bucket arrives at the magnesium furnace, the weight of each portion of magnesium balls is removed and the spacing value of the ball pressing rollers is measured during the collection of each portion of magnesium balls;

[0042] Step S15, establishing a first database according to the weight value of each portion of magnesium balls and the spacing value of the corresponding ball pressing rollers for each portion, and the content of the first database is shown in Table 1;

[0043]

[0044] Table 1 - Corresponding statistics of the spacing between the ball pressing rollers and the weight of the magnesium balls

[0045] In Table 1, the spacing value of 1.6 to 3.4 (cm) represents the range of the spacing value of the ball press rollers during the process of pressing 1 ton of powder and continuously obtaining 10 magnesium balls through the ball press. The data statistical model of each group of experiments was obtained based on Table 1. Figure 7 After three groups of control experiments, it was found that the weight of each 0.5 cubic meter of magnesium ball is proportional to the spacing between the ball pressing rollers.

[0046] Specifically, in step S14, during the process of weighing the magnesium balls after the operation simulation experiment, the following phenomena were found:

[0047] Among the magnesium balls with a weight value of 490-510kg, the weight ratio of powder, crushed particles to magnesium balls is the smallest among the above thirty groups of experimental examples, basically less than 1:50. Some magnesium balls were extracted to measure their hardness and density, and it was found that they were both higher than the standard value of magnesium balls. The breakage method was used to estimate the fragility of magnesium balls: the experimenter held a single magnesium ball at a height of 1.5 meters from the flat ground, released the magnesium ball and let it fall freely to the ground, and observed the breakage of the magnesium ball. The magnesium ball broke into 2-4 petals relatively evenly, proving that the magnesium ball was less fragile.

[0048] Among the magnesium balls with weight values ​​ranging from 510 to 550 kg, the weight ratio of powder, crushed particles to magnesium balls is in the middle of the above thirty groups of experimental examples and gradually increases with the increase of the weight value of the magnesium balls, basically greater than 1:50 and less than 3:25. Some magnesium balls were extracted to measure their hardness and density, and it was found that only 60% of the magnesium balls were within the standard value; the breakage method was used to estimate the fragility of the magnesium balls. Although the degree of breakage of the magnesium balls was uniform, some of them had more than 4 petals, which proved that the fragility of the magnesium balls increased with the increase of the roller spacing value, and the yield of the magnesium balls had decreased.

[0049] Among the magnesium balls with weight values ​​ranging from 550 to 660, the weight ratio of powder, crushed particles to magnesium balls has reached as low as 1:5. After taking some magnesium balls to measure their hardness and density, it was found that the qualified rate of magnesium balls was less than 40%. The breakage method was used to estimate the fragility of the magnesium balls. The degree of breakage of the magnesium balls was uneven and far greater than the standard of four petals, proving that the magnesium balls were too fragile to meet the requirements of magnesium production.

[0050] Step S16, based on the above experimental phenomena and the data in Table 1, the weight of each 0.5 cubic magnesium ball is not higher than 510 kg as the standard weight value, and the corresponding spacing of the ball pressing rollers is 1.6 to 2 cm as the standard spacing value. Combined with the data in Table 1, a second database is obtained, which includes the corresponding weight increase and decrease range values ​​of the magnesium balls and the spacing change range values ​​of the ball pressing rollers, wherein the value K of the part of the magnesium ball weight value higher than 510 kg is used as the weight increase and decrease range value of the magnesium ball, and the value Y of the part of the spacing of the ball pressing rollers greater than 2 cm is used as the spacing value to be adjusted of the ball pressing rollers. The content of the second database is detailed in Table 2.

[0051] k(kg) 1～10 11～30 31～50 51～70 71～90 91～120 121～150 Y(cm) 0.2 0.4 0.6 0.8 1 1.2 1.4

[0052] Table 2

[0053] Based on Table 1 and Table 2 above, the specific content of Step 2 above is:

[0054] In the actual ball production process of the ball press, the weight of each 0.5 cubic meter of magnesium ball collected is monitored in real time. After the measured weight of the magnesium ball is input into the first database and compared with the standard weight value, it can be measured whether the spacing value of the ball press rollers is greater than the standard spacing value. When the result is greater than, the difference between the actual weight value and the standard weight value is immediately obtained, and the spacing value of the ball press rollers to be adjusted is output based on the second database as a parameter for adjusting the spacing of the ball press rollers;

[0055] The specific content of the above step three is: according to the specific parameters for adjusting the spacing between the ball pressing rollers, the roller gap of the ball pressing roller is reduced so that the roller gap is always at the standard spacing before ball pressing, so as to ensure that the pressure value of the ball pressing roller is in a stable standard state, so that the hardness, density and fragility of the pressed magnesium balls are higher than the standard level.

[0056] In the Pijiang process for magnesium production, magnesium balls that meet or exceed the above standards are collected in a collecting tank at a fixed capacity. After being transferred from the ball press to the magnesium furnace station, the magnesium balls in the upper part of the collecting tank are taken out, and it is found that the amount of magnesium ball slag and powder at the bottom of the collecting tank is relatively low, indicating that the loss caused by mutual squeezing and collision of the magnesium balls during the normal collection process is relatively small; the above magnesium balls are put into the magnesium furnace, and the magnesium in the magnesium balls is gasified by high-temperature calcination, and then the crude magnesium is extracted by cooling. Compared with magnesium balls below the standard, the magnesium production cycle, energy consumption and material-magnesium ratio (material-magnesium ratio specifically refers to the mass ratio of magnesium balls to crude magnesium output, which is used to measure the reduction efficiency of magnesium in the reduction process, and the specific calculation method is: material-magnesium ratio = magnesium ball mass / crude magnesium mass) are all reduced, indicating that the magnesium balls are heated evenly during the calcination process, which is conducive to the escape of magnesium vapor; the probability of adhesion of the calcined slag is low, and the powder formation rate is low, which is conducive to improving the efficiency of slag removal operations in the magnesium furnace.

[0057] Based on the above steps, the method has at least the following beneficial effects: in the process of collecting magnesium balls at a fixed capacity, the change in the roller gap between the ball pressing rollers is timely predicted according to the change in the weight value of the magnesium balls, and the spacing between the ball pressing rollers is adjusted according to the changing parameters to ensure that the pressure value of the ball pressing roller is in a stable standard state, so that the hardness, density and fragility of the pressed magnesium balls are at a level higher than the standard. The magnesium balls prepared by this method are heated evenly during the magnesium production process, which is not only beneficial to improving the efficiency of the slag removal operation, but also reduces the magnesium production cycle, energy consumption and material-magnesium ratio, and the production efficiency is significantly improved.

[0058] In the present application, a magnesium ball preparation system is also disclosed for executing the above-mentioned magnesium ball preparation method, wherein the magnesium ball preparation system comprises a ball press 10, a weighing device 20 and an electronic control device (since the electronic control device involves an electronic component for executing a computer program, its specific structure and the relative positional relationship with the ball press 10 and the weighing device 20 are not within the scope of protection of the present application, and therefore are not shown in the figure), wherein the ball press 10 comprises a material guide hopper 11, a pair of ball press rollers 12 parallel and rotatably arranged in the material guide hopper 11, and a translation drive mechanism 13, wherein the pair of ball press rollers 12 are rotatably arranged in the material guide hopper 11 through rotatable connecting parts such as a rotating shaft and a bearing 112, and a roller gap is formed between the ball press rollers 12 (the roller gap is the spacing value of the ball press rollers 12 mentioned in a magnesium ball preparation method of the present application), and the translation drive mechanism 13 specifically refers to a device capable of autonomously controlling the driving stroke. And at least part of it has a mechanical structure that can move bidirectionally along a straight line, including an electric telescopic cylinder, an automatic reciprocating linear motion mechanism, etc., one end of which is used for driving is connected to the at least one ball pressing roller 12, and can drive a pair of ball pressing rollers 12 to move relative to each other, so that the roller gap increases or decreases; the weighing equipment 20 includes a collecting trough 21, a weighing sensor 22 and a capacity sensor 23. Along the discharging direction of the ball pressing roller 12, the collecting trough 21 is arranged below the discharging port of the guide hopper 11 for collecting magnesium balls, and the capacity sensor 23 is arranged at the opening of the collecting trough 21 for monitoring the capacity of the magnesium balls in the collecting trough 21; the weighing sensor 22 is arranged on the side of the collecting trough 21 away from the guide hopper 11, and is used to obtain the weight of the magnesium balls in the collecting trough 21; the electronic control device is communicated with the above-mentioned translation drive mechanism 13, the weighing sensor 22 and the capacity sensor 23 respectively.

[0059] Specifically, based on the embodiment of the above-mentioned magnesium ball preparation method, the above-mentioned collecting tank 21 selects a material container with a capacity of 0.5 cubic meters, and an ultrasonic capacity sensor 23 is set at the opening of the collecting tank 21 to detect the height of the magnesium balls accumulated in the collecting tank 21. When the height of the magnesium balls reaches the detection range set by the ultrasonic capacity sensor 23, a corresponding signal is sent to prompt that the collecting tank 21 is full of material; the weighing sensor 22 is set at the bottom of the collecting tank 21, and can measure the net weight of the magnesium balls in the collecting tank 21. In one embodiment, a guide rail with a length of 1 km is set below the discharge port of the ball press 10, and a walking component such as a cart is movably mounted on the guide rail. The above-mentioned several groups of collecting tanks 21 are set on the cart. After the collection tank 21 with magnesium balls is transported by a cart from the station where the ball press machine 10 is located to the station where the magnesium making furnace is located, the weighing sensor 22 is used to perform peeling and weighing, and the fragility of the magnesium balls is judged by the weight. If the weight of the magnesium balls is greater than the standard value, the amount of magnesium balls squeezed and crushed in the collection tank 21 is judged by the change in the stacking height of the magnesium balls during the transportation process; the electronic control device can make corresponding settings for the programmable controller used for circuit control based on the parameters in the above-mentioned magnesium making method, such as: the weight value of the magnesium balls, the spacing value of the ball pressing rollers 12 to be adjusted, so that the electronic control device can control the translation drive mechanism 13 according to the logic of the above-mentioned magnesium ball preparation method to drive the ball pressing rollers 12 to move, so as to achieve the purpose of adjusting the pressure value between the ball pressing rollers 12.

[0060] In addition, the present application also provides some more specific implementation methods to improve the above-mentioned magnesium ball preparation system.

[0061] Furthermore, in one embodiment, the electronic control device includes at least one storage device and a processor, the processor is respectively communicatively connected with the translation drive mechanism 13, the weighing sensor 22 and the capacity sensor 23, and the storage device stores commands executable by the processor. When the command is executed by the processor, the processor can execute the above-mentioned magnesium ball preparation method.

[0062] Specifically, the processor has the functions of collecting parameters, comparing parameters, judging parameters and selectively sending signals to control the roller gap value of the ball pressing roller 12 to increase or decrease to a certain amount. The commands stored in the storage include but are not limited to increasing the roller gap value by Ycm, reducing the roller gap value by Ycm, etc. (the Y value is specifically referred to in Table 2 above, and will not be repeated hereafter); when the processor receives the parameter signal of the weighing sensor 22, it judges the actual spacing value of the ball pressing roller 12 through the first database, and then calculates the spacing value of the ball pressing roller 12 to be adjusted based on the second database, and sends any one of the above instructions in the form of an electrical signal to control the translation drive mechanism 13 to make a corresponding response.

[0063] Further, in order to enable the above-mentioned translation drive mechanism 13 to realize the control of the roller gap, along the axial direction of the ball pressing roller 12, the outer surface of the above-mentioned guide hopper 11 is provided with a mounting seat 113 on both sides of the ball pressing roller 12, and the above-mentioned translation drive mechanism 13 includes a driver 131 and at least a pair of sliders 132. Along the first direction (the first direction refers to the direction in which the ball pressing roller 12 can move relatively), a slide groove is opened on the mounting seat 113, and a pair of sliders 132 are respectively slidably matched with the slide groove on the mounting seat 113. The two sides of the guide hopper 11 for connecting with the ball pressing roller 12 are respectively provided with moving grooves along the above-mentioned first direction, and the moving groove is penetrated by a connecting shaft 111, which is composed of a diameter The drive 131 is composed of a thicker roller and a thinner coupling, the couplings are arranged on both sides of the rollers, and the ball pressing roller 12 with a ring-shaped cross section can be rotatably sleeved on the connecting shaft 111 through a bearing 112 and is located at the roller in the middle part of the connecting shaft, and the coupling at at least one end of the connecting shaft 111 extends out of the movable groove and is fixedly connected to the slider 132 to ensure that the slider 132 can push the ball pressing roller 12 to move when it slides, and the ball pressing roller 12 can also rotate around the connecting shaft 111; the above-mentioned driver 131 includes a pair of electric push rods, the fixed ends of the electric push rods are fixed to one side of the mounting seat 113, and the movable ends are connected to the slider 132, and the electric push rods are communicated with the electronic control device to form a control logic.

[0064] When using the above-mentioned magnesium ball preparation system: when the electric push rod receives the instruction signal from the electronic control device to increase the roller gap value by Ycm or decrease the roller gap value by Ycm, the ball pressing roller 12 is moved Ycm along the first direction or in the opposite direction of the first direction by pushing the slider 132 to increase or decrease the roller gap.

[0065] Furthermore, in order to enable the ball pressing roller 12 to be driven to rotate, the above-mentioned ball pressing machine 10 also includes a rolling drive mechanism 14, which includes at least a pair of drive motors 141, and the drive shafts of the pair of drive motors 141 are respectively connected to the ball pressing roller 12, and at least one of the drive motors 141 is arranged on any one of the above-mentioned sliders 132.

[0066] When using the above-mentioned magnesium ball preparation system, the ball pressing roller 12 can be driven by the driving motor 141 and rotate relatively to realize the ball pressing operation, and can also be driven by the translation driving mechanism 13 and translate relatively to realize the increase or decrease of the roller gap. The two different sets of driving mechanisms respectively realize different functions and cooperate with each other to avoid movement conflicts between them.

[0067] Furthermore, in order to prolong the ball pressing process and keep the ball pressing roller 12 at a lower speed for ball pressing, the above-mentioned rolling drive mechanism 14 also includes at least one pair of planetary gear sets 142, the planetary gear set 142 includes a planetary carrier 1421 and a ring gear 1424, the inner side of the ring gear 1424 is provided with tooth patterns, the ring gear 1424 is coaxially fixedly connected to one end of the ball pressing roller 12, a sun gear 1422 and a plurality of planetary gears 1423 axially arranged around the sun gear 1422 are provided on the planetary carrier 1421, and the sun gear 1422, the planetary gears 1423, and the ring gear 1424 are meshed with each other from the inside to the outside, and the driving shafts of the above-mentioned pair of driving motors 141 are coaxially connected to the sun gear 1422.

[0068] When the above device is used, the driving motor 141 is started to rotate relative to each other, and the sun gears 1422 in the pair of planetary gear sets 142 are driven to rotate relative to each other, and the planetary gears 1423 are rotated around the contour of the sun gears 1422 through the planetary carrier 1421, so as to drive the ring gear 1424 to rotate. The ring gear 1424 rotates at a speed slower than the sun gear 1422 according to the reduction ratio of the planetary gears 1423, so under the deceleration effect of the planetary gear set 142, the ball pressing roller 12 rotates stably at a speed lower than the actual speed of the driving motor 141, thereby prolonging the process of the ball pressing grooves on the ball pressing roller 12 meeting each other, so that the powder in the ball pressing grooves is squeezed longer, so as to be pressed into more compact balls.

[0069] Furthermore, during the discharging process, in order to collect the formed pellets separately from the remaining powder, the lower part of the above-mentioned guide hopper 11 is provided with a first discharge port 114 and a second discharge port 115 in sequence along the gravity direction, wherein the first discharge port 114 is used to discharge magnesium balls, and the second discharge port 115 is used to discharge the remaining powder; the above-mentioned collecting trough 21 is arranged below the first discharge port 114, and in the guide hopper 11, a guide trough 116 is obliquely arranged between the first discharge port 114 and the second discharge port 115, one end of the guide trough 116 is connected to the first discharge port 114, and the other end extends obliquely upward and toward the lower side of the ball pressing roller 12 away from the first discharge port 114, and the bottom surface of the guide trough 116 is provided with a screening area 1161 relative to the second discharge port 115, and a plurality of sieve holes are arranged in the screening area 1161 along the gravity direction.

[0070] When the above device is used, the material guide trough 116 is used to receive the magnesium balls and the remaining powder after being pressed by the ball pressing roller 12 and guide the magnesium balls to roll out of the first discharge port 114 in an inclined downward direction to be collected by the collecting trough 21. The remaining powder is discharged from the second discharge port 115 from the screening area 1161 along the direction of gravity under the action of the sieve holes.

[0071] Furthermore, in order to avoid the problem of powder waste during the discharge process, the above-mentioned guide hopper 11 is provided with a feed port 117 on one side located above the ball pressing roller 12, and a first feeder 30 is provided at the feed port 117, and the discharge end of the first feeder 30 extends to between a pair of ball pressing rollers 12; a second feeder 40 is connected to the second discharge port 115, and the discharge end of the second feeder 40 extends to the feed end of the first feeder 30.

[0072] When using the above-mentioned magnesium ball preparation system, the first feeder 30 transports the powder to between the ball pressing rollers 12 through the feed port 117, and the second feeder 40 receives the powder that has not been pressed into magnesium balls by the ball pressing rollers 12 and transports it to the first feeder 30, so that the powder circulates into the guide hopper 11, avoiding the loss and waste of powder and ensuring the feeding efficiency.

[0073] Furthermore, in order to avoid the admixture of discrete powder during the process of collecting magnesium balls, a dust removal port 118 is opened at the lower part of the guide hopper 11, adjacent to the above-mentioned first discharge port 114. The dust removal port 118 is located outside the guide hopper 11 and is connected to a dust removal pipe 119. A dust removal fan 50 is set at the end of the dust removal pipe 119 away from the dust removal port 118.

[0074] When the above-mentioned magnesium ball preparation system is used, when the magnesium balls roll out of the first discharge port 114, the dust removal fan 50 generates negative pressure at the dust removal port 118 through the dust removal pipe 119, and sucks out the powder that has not been screened out by the screening area 1161 from around the magnesium balls, thereby reducing the amount of powder doping in the pellets, so that the collected magnesium balls can reduce the process of re-screening and can be directly transported to the magnesium making furnace to participate in the magnesium making reaction.

[0075] Specifically, the air outlet of the dust removal fan 50 is connected to a powder collecting box 51, and the discharge port of the powder collecting box 51 is connected to a third feeder 60 through a valve. The third feeder 60 is used to discharge the powder collected in the powder collecting box 51 to the feeding end of the first feeder 30 so as to reuse this part of the powder and avoid powder loss; the above-mentioned first feeder 30, the second feeder 40 and the third feeder 60 are all selected from material conveyor belts or screw feeders. In a preferred embodiment, in order to achieve the effect described in the above-mentioned feeding process, the first feeder 30 can select a material conveyor belt, and the second feeder 40 and the third feeder 60 can select screw feeders.

[0076] Combined with the multiple structures and features in the above embodiments, the above magnesium ball preparation system can achieve the beneficial effects of improving the quality and efficiency of ball pressing, reducing resource waste, and reducing production costs.

[0077] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing magnesium balls which is beneficial for efficient magnesium production, characterized in that: include, Step 1: Use a ball press to prepare magnesium balls, collect magnesium balls based on a specified capacity, obtain the weight value of the magnesium balls of the specified capacity and the spacing value of the ball press rollers after the ball press produces the magnesium balls of the specified capacity, and establish a database based on the corresponding relationship between the weight value and the spacing value; Step 2: obtaining the weight value of the magnesium ball based on the specified capacity in real time, and obtaining the spacing value of the ball pressing roller to be adjusted based on the database; Step three: adjusting the spacing of the ball pressing rollers based on the spacing value to be adjusted, so that the pressure value of the ball press reaches the corresponding preparation standard of magnesium balls.

2. A method for preparing magnesium balls which is beneficial for efficient magnesium production, characterized in that: The database includes a first database and a second database, the first database includes the corresponding standard weight values ​​of the magnesium balls and the standard spacing values ​​of the ball pressing rollers, and the second database includes the corresponding weight increase and decrease range values ​​of the magnesium balls and the spacing values ​​of the ball pressing rollers to be adjusted.

3. A magnesium ball preparation system, characterized in that: The method for preparing magnesium balls as claimed in any one of claims 1 to 2 comprises: A ball press, the ball press comprising a material guide hopper, at least one pair of ball press rollers rotatably arranged in parallel in the material guide hopper, and a translation drive mechanism, a roller gap is formed between the pair of ball press rollers, at least a portion of the translation drive mechanism is transmission-connected to at least one of the pair of ball press rollers, and the translation drive mechanism is used to drive the pair of ball press rollers to move relative to each other to increase or decrease the roller gap; A weighing device, the weighing device comprising a collecting tank, a weighing sensor, and a capacity sensor. The collecting tank is arranged along the discharging direction of the ball pressing roller. The capacity sensor is arranged relative to the opening of the collecting tank and is used to obtain the capacity of the magnesium balls in the collecting tank. The weighing sensor is arranged on a side of the collecting tank away from the guide hopper and is used to obtain the weight of the magnesium balls in the collecting tank. as well as, An electronic control device is communicatively connected with the translation drive mechanism, the weighing sensor and the capacity sensor respectively.

4. The magnesium ball preparation system according to claim 3, characterized in that: The electronic control device includes at least one storage device and at least one processor, the processor is respectively communicatively connected with the translation drive mechanism, the weighing sensor and the capacity sensor, the storage device stores instructions executable by the processor, and the instructions are executed by the processor, so that the processor executes the magnesium ball preparation method described in any one of claims 1 to 2.

5. The magnesium ball preparation system according to claim 3, characterized in that: Along the axial direction of the ball pressing roller, mounting seats are respectively arranged on both sides of the surface of the guide hopper of the ball pressing roller. The translation drive mechanism includes a driver and at least one pair of sliders. Along a first direction, a pair of sliders are movably connected to the mounting seats, and the sliders are respectively connected to the ball pressing roller for relative rotation. The driver is in transmission cooperation with the sliders, and the driver is communicatively connected with the electronic control device. When the driver drives the sliders to move along the first direction, the roller gap is reduced; when the driver drives the sliders to move in the opposite direction of the first direction, the roller gap is increased.

6. The magnesium ball preparation system according to claim 5, characterized in that: The ball press machine also includes a rolling drive mechanism, which includes at least one pair of drive motors, wherein the pair of drive motors are rotatably connected to the ball press rollers respectively, and at least one of the drive motors is fixedly connected to any one of the sliders.

7. The magnesium ball preparation system according to claim 6, characterized in that: The rolling drive mechanism further includes at least one pair of planetary gear sets, the planetary gear sets include a planetary carrier and a gear ring, the gear rings are respectively coaxially fixedly connected to one end of the ball pressing roller, the planetary carrier is provided with a sun gear and a plurality of planetary gears arranged circumferentially around the sun gear, the planetary gears, the sun gear and the gear ring are meshed with each other; The driving shafts of a pair of driving motors are respectively coaxially connected to the sun gears of a pair of planetary gear sets.

8. The magnesium ball preparation system according to claim 3, characterized in that: The guide hopper is provided with a first discharge port and a second discharge port in sequence along the direction of gravity, and the collecting trough is located below the first discharge port; in the guide hopper, a guide trough is obliquely provided between the first discharge port and the second discharge port, one end of the guide trough is connected with the first discharge port, and the other end extends toward the ball pressing roller away from the first discharge port, and a screening partition is provided on the guide trough relative to the first discharge port, and a plurality of sieve holes are provided in the screening partition along the direction of gravity.

9. The magnesium ball preparation system according to claim 8, characterized in that: Along the feeding direction of the ball pressing roller, a feeding port is opened on one side of the guide hopper, and a first feeder is arranged at the feeding port, and the discharge end of the first feeder extends to between the ball pressing rollers; a second feeder is connected to the second discharge port, and the discharge end of the second feeder extends to the feeding end of the first feeder.

10. The magnesium ball preparation system according to claim 8, characterized in that: A dust removal port is provided on one side of the guide hopper, adjacent to the first discharge port, the dust removal port is connected to a dust removal pipe, and a dust removal fan is provided at one end of the dust removal pipe away from the dust removal port.

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