132 results about "Titanium slag" patented technology

The invention discloses a direct-current hollow electrode hydrogen plasma furnace mineral powder smelting system and method and application, and belongs to the technical field of hydrogen metallurgy. The system comprises a hollow electrode gas powder injection hydrogen plasma gun system, a direct current bottom electrode ore-smelting electric furnace system, a fine ore and hydrogen supply system and the like. The hollow electrode and the furnace bottom electrode form a direct-current arc, hydrogen carrying mineral powder is sprayed into an arc area to generate high-temperature hydrogen plasma, mineral powder reduction is achieved, and metal and slag are separated. According to the method, hydrogen serves as a reducing agent, carbon emission is reduced, the reaction efficiency is high, energy consumption is low, and the method can be used for steelmaking, smelting of micro-carbon ferromanganese and titanium slag and recovery of valuable metal in nonferrous smelting waste slag and has good green metallurgy application prospects.

The invention belongs to the technical field of steel smelting, and particularly discloses a comprehensive utilization method of vanadium titano-magnetite, which comprises the following steps: S1, preparing the vanadium titano-magnetite into pellets, and carrying out reduction reaction to obtain direct reduced iron; s2, a carbonaceous reducing agent and the direct reduced iron obtained in the step S1 are mixed and smelted in a melt separation electric furnace, and slag and molten iron are obtained; a slag former is not added in the smelting process, the purity of the titanium slag is improved through optimal design of the furnace profile of the melting electric furnace and combination of various smelting process control means, the problems that refractory materials of the melting electric furnace are excessively eroded, the service life is short, slag-metal separation is difficult, smelting is difficult to control and the like are solved, and the purposes of high-grade titanium slag and long service life of the melting electric furnace are achieved.

The invention provides titanium-containing anhydrous stemming for a blast furnace and a preparation method of the titanium-containing anhydrous stemming, and belongs to the technical field of refractory materials for the blast furnace. The titanium-containing anhydrous stemming for the blast furnace comprises the following raw materials: 40-60 parts of titanium corundum, 5-15 parts of silicon carbide, 10-20 parts of ferro-silicon nitride fine powder, 5-15 parts of titanium dioxide fine powder, 5-15 parts of vanadium-titanium slag fine powder, 5-10 parts of coke fine powder, 1-5 parts of monatomic silicon fine powder, 1-5 parts of ball clay micro powder, 1-5 parts of aluminum nitrate micro powder and 1-2 parts of magnesium alon micro powder. Gas-phase substances of Si (g), Al (g) and Mg (g) can be formed in the stemming at high temperature by the monatomic silicon fine powder and the MgAlON micro powder in the raw materials and react with CO and N2 in the environment to generate ceramic whiskers such as SiC, Si3N4, AlN and MgAl2O4, and the generated ceramic whiskers are distributed in a staggered manner and are filled in pores of the stemming, so that the high-temperature strength and the volume stability of the stemming are remarkably improved.

The invention provides a smelting method of vanadium-titanium-iron minerals, which comprises the following steps: carrying out reduction roasting on the vanadium-titanium-iron minerals by using a reducing agent to obtain a metallized material; and the metallized material and a slag former are smelted, the slag former comprises sodium salt, and vanadium-containing pig iron and active titanium slag are obtained after smelting is finished. According to the smelting method provided by the invention, a two-step smelting process of pre-reduction and sodium modification smelting is adopted for the vanadium-titanium-iron minerals, so that efficient separation of titanium and iron vanadium is realized, and vanadium-containing pig iron and titanium slag with high additional values are obtained. The titanium slag is high in grade, good in activity and high in acidolysis rate, and the problems that ferrovanadium and the titanium slag are difficult to separate in the vanadium-titanium-iron mineral smelting process, and the titanium slag is poor in activity, low in acidolysis rate and incapable of being economically utilized are solved.

The invention discloses a melt separation titanium slag modification treatment method and system. The method comprises the steps that in the direct reduction-melt separation process, melt separation titanium slag components are regulated and controlled to enable the melt separation titanium slag to contain 40 wt%-60 wt% of TiO2 and 1.1 wt%-9 wt% of C, deslagging is conducted, after heat preservation melting is conducted on the melt separation titanium slag at the temperature of 1550-1600 DEG C for 30-60 minutes, slow cooling is conducted to 1200 DEG C at the cooling rate of 5-10 DEG C / min, then rapid cooling is conducted to 900 DEG C at the cooling rate of 20 DEG C / min or above, finally natural cooling is conducted to the room temperature, and modified slag is obtained. According to the method, regulation and control of components of the melt-separated titanium slag are combined with heat preservation, slow cooling, quenching and natural cooling, anosovite is directionally induced to serve as a main phase of the titanium slag, micronized spinel and an amorphous glass phase, titanium resources are enriched in the anosovite phase, and the modified titanium slag high in grade and good in activity is obtained; and the problems of low additional value, small utilization scale, poor economic benefit and the like of molten titanium slag products are solved.

The application discloses a threaded hole machining method for a titanium rod, the threaded hole is arranged on a working section of the titanium rod, and the working section is made of titanium alloy material; the threaded hole machining method comprises the following steps: S1, a tungsten steel drill bit is selected to process a bottom hole with a preset size at one end of a workpiece to be machined; S2, a boring tool is used to bore the bottom hole to empty titanium slag debris in the bottom hole; S3, after the titanium slag debris in the bottom hole is emptied, a tapping tap is used to tap the bottom hole to form a threaded hole; wherein the tapping tap has a 30-35 degree rake angle and a 40 degree relief angle; S4, the threaded hole is bored by the boring tool to remove burrs left at the bottom of the threaded hole; the steps S3 and S4 are repeated until the inner thread specification of the threaded hole is #10-32UNF-2B, #10 is a number, 32 is a number of teeth, UNF represents fine thread, and 2B is the accuracy grade of the inner thread. The threaded hole machining method can reduce part rejection and improve the quality of the threaded hole.

The invention relates to an adjustable hanging device, and belongs to the field of large titanium slag electric furnace water-cooled furnace cover hanging devices in the metallurgical industry. The adjustable hanging device comprises a fixed seat, an adjusting device, a first hanging pull rod, a second hanging pull rod and a buffer device, wherein the first hanging pull rod is connected to the fixed seat; the second fixing pull rod is connected to the first hanging pull rod through the adjusting device so that the second fixing pull rod can move close to or away from the first hanging pull rod. And the buffer device is connected to the second fixed pull rod. The adjustable hanging device can level a hung object by adjusting the height of the adjustable hanging device.

This invention provides a method for improving the desulfurization capacity of high-titanium slag using an artificial intelligence model, applicable to the smelting of high-vanadium-titanium ore in blast furnaces. The method includes: controlling the MgO content in the slag to 8.0%-9.5% by weight, the binary basicity of the slag to 1.10-1.17, and the Al2O3 content ≤14.5%, while maintaining the MgO to Al2O3 ratio in the slag at 0.60-0.65; maintaining the physical heat of molten iron ≥1440℃; controlling the blast furnace inlet blast temperature ≥1200℃; controlling the sulfur load in the blast furnace inlet to 4.5-5.5 kg, and controlling the proportion of pellets in the blast furnace inlet to 46%-50%; and constructing a dynamic adjustment model based on predicted sulfur load increments and predicted titanium reduction increments, so that the oxygen enrichment rate is dynamically adjusted within a first threshold range, and the blast furnace coal ratio is dynamically adjusted within a second threshold range. This invention can dynamically adjust the oxygen enrichment rate and blast furnace coal ratio according to the sulfur load increment and titanium reduction increment, thereby improving the desulfurization capacity of high-titanium slag.

The present invention provides an auxiliary cementitious material for concrete, a preparation method, and an application thereof. The auxiliary cementitious material comprises the following components in parts by weight: 25-40 parts of modified converter steel slag, 30-40 parts of high-titanium slag, 15-30 parts of modified waste red brick powder, 10-20 parts of desulfurized gypsum, and 0.05-0.1 parts of a grinding aid. The raw materials for the modified converter steel slag include converter steel slag powder, lithium slag powder, calcium-silicon slag powder, and waste red brick powder in a mass ratio of (5.5-7.5):(2-2.5):(1.8-2.4):1; the raw materials for the modified waste red brick powder include waste red brick powder, mixing station waste water, and Ca(OH)2 in a mass ratio of (8-10):(2.2-3.5):1.5. The auxiliary cementitious material of the present invention has enhanced activity due to the coordination of the various components. When applied to concrete, it can play a synergistic and complementary role, increasing the early strength of concrete, reducing efflorescence, and improving its fluidity.

The invention provides a method for jointly smelting high titanium slag by adopting multiple raw materials, which comprises the following steps: S1, adding a binder and water into electric furnace fly ash, and stirring to obtain a first fly ash block; s2, rolling, crushing and screening the first dedusting ash block to obtain a second dedusting ash block; s3, the second dedusting ash blocks are mixed into the titanium concentrate to form a first mixed material; s4, adding a reducing agent into the first mixed material to form a second mixed material; s5, the second mixture and the high-titanium slag fine powder are added into an electric furnace for combined smelting, and high-titanium slag and regenerated electric furnace fly ash are obtained; and S6, cooling, crushing and grading the high-titanium slag to obtain a high-titanium slag finished product and regenerated high-titanium slag fine powder. By means of the method, the electric furnace fly ash and the high titanium slag fine powder can be fully recycled, recycling of by-products and waste products is achieved, the economic benefit of the high titanium slag is improved, meanwhile, the proportion of the regenerated high titanium slag fine powder, mine consumption and power consumption per ton slag are reduced, and the production cost of the high titanium slag is reduced.

The invention discloses low-shrinkage ultra-high performance concrete as well as a preparation method and application thereof, and belongs to the technical field of building materials. The low-shrinkage ultra-high performance concrete is prepared from the following raw materials in parts by weight: 500 to 600 parts of cement, 1000 to 1500 parts of magnesium-titanium slag sand, 150 to 200 parts of fly ash, 150 to 200 parts of silica fume, 100 to 150 parts of rice hull ash, 150 to 180 parts of steel fiber, 20 to 30 parts of a water reducing agent and 150 to 180 parts of water. The invention further discloses a preparation method and application of the low-shrinkage ultra-high performance concrete. The low-shrinkage ultra-high performance concrete prepared by the invention can better solve the problem of poor long-term durability of the concrete caused by high shrinkage characteristic of the existing ultra-high performance concrete.

A low-manganese titanium slag continuous discharging device belongs to the technical field of discharging devices and comprises a storage tank, a controller is mounted on the side wall of the storage tank, a plurality of supporting arms are vertically arranged at the bottom end of the storage tank, a discharging port is obliquely and downwards formed in the bottom end of the side wall of the storage tank, and a flow monitoring assembly and an opening and closing assembly are arranged in the discharging port. In the process that low-manganese titanium slag falls along the discharging port, the discharging amount of the low-manganese titanium slag can be automatically detected, the opening and closing degree of the cover body is automatically adjusted according to the flow and accumulation condition of the low-manganese titanium slag, the discharging continuity is guaranteed, when the flow of the low-manganese titanium slag is large, the cover body is automatically opened to be large, blocking is avoided, and when the flow of the titanium slag is small, the cover body is automatically opened to be large. The cover body is properly closed to be small, stable discharging is kept, the discontinuous discharging phenomenon is reduced, the low-manganese titanium slag in the storage tank can be continuously stirred, the low-manganese titanium slag is continuously pushed to the discharging port, meanwhile, caking formed by the low-manganese titanium slag is broken, and it is guaranteed that the low-manganese titanium slag is in a flowable state all the time.

The application relates to a preparation method of a manganese-containing pellet and a blast furnace smelting method, which comprises the following steps: step a, crushing, water-fine grinding and drying treatment are carried out on high-manganese lump ore to obtain high-manganese concentrate; step b, the high-manganese concentrate and bentonite are uniformly mixed according to a preset ratio to obtain a mixture; step c, the mixture is added into a disc pelletizer, and a pellet core is obtained in a water dripping ball forming mode; step d, based on the pellet core, the water content ratio and the balling time added into the disc pelletizer are controlled, so that the residual mixture of the mixture is uniformly wrapped on the outer layer of the pellet core, and a manganese-containing pellet is obtained. The method improves the traditional preparation method of the manganese-containing pellet, improves the quality of the manganese-containing pellet, and obtains the manganese-containing pellet meeting the performance standard of the blast furnace smelting. The blast furnace adding mode is optimized, the utilization efficiency of the manganese ore is improved, the iron loss is reduced, and the smelting of the high-titanium slag is improved.

The invention relates to the technical field of blast furnace smelting, and discloses a method for improving the flowability of high titanium slag in blast furnace smelting of vanadium titano-magnetite, and the method comprises the following steps: stabilizing a furnace charge structure of 48wt% of vanadium-titanium sintered ore, 48wt% of vanadium-titanium pellet ore and 4wt% of vanadium-titanium magnetite raw ore, smelting in the furnace, and adding 2-5wt% of dolomite and a proper amount of manganese powder into the vanadium-titanium sintered ore to improve the flowability of the slag. More preferably, the flowability of the high titanium slag is further improved by combining optimization of operation parameters such as large air volume, high air temperature, high oxygen enrichment rate and high top pressure of the blast furnace. According to the method for improving the flowability of the high-titanium slag, on the premise that the charging proportion of schreyerite is not reduced, generation of a high-melting-point phase in the slag can be effectively controlled, the viscosity of the slag is reduced, the flowability of the slag is improved, the smelting efficiency of a blast furnace is improved, and the production cost is reduced.

The utility model provides a vanadium-titanium slag crushing system, which belongs to the technical field of vanadium-titanium slag powder production, and comprises a box body, the top of the box body is provided with a feed port, and the bottom of the box body is provided with a discharge port; the first-stage crushing assembly and the second-stage crushing assembly are arranged in the box body from top to bottom, and a material returning opening is formed in one side of the box body and located between the first-stage crushing assembly and the second-stage crushing assembly; a discharging opening in the bottom of the box body is connected with a screening mechanism, the screening mechanism is used for screening the crushed vanadium-titanium slag into large blocks, small blocks and particles, and a large block recycling box, a small block recycling box and a particle concentrating box are arranged below the screening mechanism. Vanadium-titanium slag fragments are subjected to double crushing through the first-stage crushing assembly and the second-stage crushing assembly, the crushed vanadium-titanium slag is screened into three types of different sizes through the screening mechanism so that the vanadium-titanium slag can be poured into the feeding port or the material returning port again to be crushed again, the vanadium-titanium slag fragments can be crushed more thoroughly, and the crushing efficiency is improved. And the crushing effect is improved.

The application discloses a smelting method of vanadium-titanium magnetite, belongs to the technical field of comprehensive utilization of vanadium-titanium magnetite, and solves the problems of low iron utilization value, low vanadium recovery rate and difficulty in recovery and utilization of titanium in the prior art. The method comprises the following steps: vertical furnace gas-based direct reduction of vanadium-titanium magnetite oxidized pellets and reducing gas to obtain metallized pellets; the metallized pellets are loaded into an electric furnace, one-time melting separation is carried out under the condition that no reducing agent is added, low-carbon molten steel and iron-vanadium-titanium slag are generated; the iron-vanadium-titanium slag is mixed with coke and loaded into the electric furnace, secondary melting separation is carried out, and silicon-vanadium alloy and titanium-rich slag are generated. The application can be used for smelting of vanadium-titanium magnetite.

The invention discloses a resource comprehensive utilization method of titanium-containing blast furnace slag, and belongs to the technical field of resource comprehensive utilization of industrial solid waste. The resource comprehensive utilization method of the titanium-containing blast furnace slag comprises the following steps that molten titanium-containing blast furnace slag is subjected to water quenching and grinding refining, and water-quenched slag is obtained; carrying out acid leaching on the water-quenched slag by adopting nitric acid, and carrying out solid-liquid separation to obtain acid leaching liquid and acid leaching slag; the acid leaching residues are subjected to alkaline leaching and solid-liquid separation, and high-titanium residues and alkaline leaching liquid are obtained; adding humic acid, urea, magnesium sulfate and sodium carboxymethyl cellulose into the alkaline leaching solution to obtain a water-soluble silicon fertilizer; wherein the pickle liquor is a valuable metal element recovery raw material; the high titanium slag is a titanium product production raw material; the alkaline leaching liquid is water glass with the silicon content being greater than or equal to 10g / L. Compared with a traditional utilization method, the method has the advantages that refined resource utilization of various valuable components including titanium is achieved, and a high additional value can be generated.

This invention relates to an N-Fe co-doped high-titanium slag-based photocatalytic zeolite, its preparation method, and its application. The method includes the following steps: mixing high-titanium slag powder with ammonium salt and calcining at 300–500°C to obtain a calcined product; subsequently, washing, drying, and grinding to obtain powder A; mixing powder A with an alkali to obtain powder B, then mixing it uniformly with water, and undergoing hydrothermal crystallization, solid-liquid separation, washing, and drying to obtain powder C; mixing powder C with an acidic iron source solution, and undergoing ultrasonic reaction, solid-liquid separation, washing, and drying to obtain N-Fe co-doped high-titanium slag-based photocatalytic zeolite. This invention uses high-titanium slag as the main raw material, mixes it with ammonium salt for high-temperature calcination, then mixes it with an alkali for hydrothermal crystallization, and subsequently reacts it with an iron source to obtain N-Fe co-doped high-titanium slag-based photocatalytic zeolite. This achieves resource utilization of industrial waste, reduces zeolite preparation costs, and the prepared zeolite exhibits good photocatalytic and adsorption performance.

The present application relates to the field of titanium slag smelting and titanium slag preparation of titanium dioxide, and particularly relates to a method for improving acidolysis rate of titanium slag. The method comprises the following steps: step S1, adding the titanium slag after smelting into a cooling device, and the temperature of the added titanium slag is T1; step S2, introducing inert gas into the cooling device to cool the titanium slag once, and the cooling rate is Q1, and the temperature of the titanium slag after the first cooling is T2; step S3, introducing inert gas into the cooling device to cool the titanium slag twice, and the cooling rate is Q2, and the temperature of the titanium slag after the second cooling is T3; step S4, introducing inert gas into the cooling device to cool the titanium slag thrice, and the cooling rate is Q3, and the temperature of the titanium slag after the third cooling is T4; step S5, spraying process water into the cooling device to cool the titanium slag, and when the titanium slag is cooled to T5, the inert gas and the water spraying are stopped, and the cooling of the titanium slag is completed.

The invention relates to the technical field of electric furnace smelting, in particular to a circular treatment method for a fine-fraction titanium-rich material through electric furnace smelting of high titanium slag. The method comprises the following steps: filling a fine-fraction titanium-rich material, titanium concentrate and a reducing agent into a stock bin at the top of an electric arc furnace, proportionally blanking and smelting, carrying out electric arc melting and stirring, treating slag liquid to obtain a high-titanium slag product, and circularly smelting the generated fine-fraction titanium-rich material. An alternating-current electric arc furnace is adopted for closed and open arc smelting, a furnace top stock bin is used for regulating and controlling feeding point positions and speed, and precise smelting is achieved in combination with multiple feeding point position layouts. According to the method, the titanium element in the fine-fraction titanium-rich material is effectively utilized, introduction of impurities is avoided, the titanium grade of the slag liquid meets the process requirement by adjusting the dosage of the reducing agent, recycling of the fine-fraction titanium-rich material is achieved, resource waste and environmental pollution are reduced, the smelting efficiency and product quality are improved, and the smelting process is optimized.

The invention relates to the field of metallurgical equipment, and provides an oil pipe folding mechanism device for an opening and plugging machine of a titanium slag electric furnace and the titanium slag electric furnace tapping machine. The oil pipe folding mechanism device comprises a first joint arm, a second joint arm, a support and a hydraulic hose, the first joint arm is rotationally connected with the support, and the second joint arm is rotationally connected with the first joint arm; the hydraulic hose is arranged on the first joint arm and the second joint arm and located on the same side of the first joint arm and the second joint arm, one end of the hydraulic hose communicates with an external hydraulic oil pipe, and the other end of the hydraulic hose is connected with the hydraulic execution element. According to the oil pipe folding mechanism device and the titanium slag electric furnace tapping machine, the first joint arm and the second joint arm support the hydraulic hose and drive the hydraulic hose to move, and the technical problems that in the prior art, hydraulic oil pipes are in disorder and are abnormally damaged are solved.

The invention relates to a method for preparing magnetic artificial rutile from acid-soluble titanium slag, which comprises the following steps: heating and converting the acid-soluble titanium slag, hematite, a reducing agent and B2O3 into liquid molten slag, blowing air into the molten slag at a heat preservation temperature after heat preservation is finished for oxidation, cooling after oxidation, embedding fine ilmenite crystal grains into rutile crystals in the cooling process, and forming the magnetic artificial rutile by using the ilmenite crystal grains. The rutile indirectly has magnetism, and finally the modified slag containing the magnetic artificial rutile is obtained; performing magnetic separation to obtain artificial rutile concentrate and tailings; and pickling to obtain the high-grade artificial rutile. The modified slag containing the magnetic artificial rutile is prepared through additive adding and high-temperature oxidation, then the magnetic artificial rutile is separated from gangue by means of magnetic separation, the artificial rutile concentrate is obtained, the process is economical and environmentally friendly, the hydrochloric acid consumption and the waste liquid output in the follow-up pickling process are remarkably reduced, and the production cost is reduced. And the TiO2 content of the product artificial rutile is greatly improved, and high value-added utilization of the acid-soluble titanium slag is realized.

The invention relates to the technical field of iron-containing mineral treatment, in particular to a method for comprehensively utilizing iron-containing minerals, which comprises the following steps: through the whole-process cooperative treatment of low-temperature weak reduction magnetization, magnetic separation, associated element gradient extraction and tailing gelatinization, iron, titanium and rare earth are respectively collected, and iron can be efficiently and magnetically separated and recycled under the mild condition of lower than 750 DEG C; the energy consumption and the carbon emission are greatly reduced; titanium, manganese and rare earth are clearly separated due to the fact that oxide forms are kept, the rare earth is subjected to normal-temperature leaching and environment-friendly extraction, oxalic acid precipitation closed-loop recovery, and waste liquid is recycled; the magnetic separation tailings and the titanium slag are directly prepared into a high-strength geopolymer gelling material according to the proportion of 7: 3, the tailings are completely converted into building materials or heavy metal contaminated soil remediation filler, a tailing dam is thoroughly omitted, and the risks of dam break and percolation are eradicated; and finally, the high-iron concentrate, the mixed rare earth oxide and the high-added-value gelling material are output, and a virtuous cycle with full utilization of resources, zero emission of waste and win-win economy and environment is formed.

The present application relates to the technical field of metallurgy and chemical industry, and particularly relates to a method for preparing boiling chlorination raw material from titanium slag. The method for preparing boiling chlorination raw material from titanium slag comprises the following steps: S1, pre-treating water-quenched titanium slag at 150-550 DEG C to obtain pre-treated titanium slag; S2, sequentially performing pre-leaching treatment and acid leaching treatment on the pre-treated titanium slag to obtain boiling chlorination raw material. The present application adds a low-temperature pre-treatment step before leaching of the water-quenched titanium slag, reduces the loss of titanium, effectively avoids the pulverization of the product in the subsequent leaching process, improves the titanium yield while ensuring the leaching effect of other impurity elements, reduces the amount of fine powder in the product, thereby improving the grade of TiO2 and meeting the requirements of boiling chlorination raw material; and the preparation method has a short process flow, simple steps and high TiO2 yield.

The present application relates to finished product titanium slag grading equipment process technical field, specifically for a kind of finished product titanium slag grading process, comprising the following steps: titanium slag is sequentially through primary vibrating screen and pre-screen;Again send into fine screen screening;After passing through fine screen, -20 mesh material enters powder concentrator;In powder concentrator, -20 mesh material falls on spreading device;Finally, +20 mesh material enters grinder, 20-160 mesh material enters finished product bin, -160 mesh material is slightly divided by disc screen 20-160 mesh material into finished product bin, -160 mesh material fine powder is packaged handling.The primary vibrating screen, pre-screen and fine screen of the present application are set to pre-screen titanium slag, and the shaking assembly, centrifugal assembly and air blowing assembly provided in the spreading device of powder concentrator are used to disperse titanium slag and form spiral airflow to select powder, thereby improving powder selection efficiency.

The invention discloses a release agent suitable for electric furnace smelting, the release agent comprises water, a base material and an additive, the base material comprises the following raw materials by weight: 10-20 parts of electric furnace fly ash, 50-70 parts of bentonite, and 30-50 parts of diatomite; the additive is a surfactant which accounts for 0.1-0.5% of the mass of the base material. According to the release agent suitable for electric furnace smelting, through the synergistic effect of the electric furnace fly ash, the bentonite, the diatomite and the additive, a more temperature-resistant diaphragm is formed between high-temperature molten iron and a cast iron film, so that high-temperature adhesion between the molten iron produced by an electric furnace and the cast iron film is avoided in the time period when the molten iron is solidified from a liquid state to a solid state; and when the casting mold is applied to a mold cast by a pig machine and with smooth surface of a cast iron block cast in electric furnace smelting of a high titanium slag factory, the demolding rate reaches 100%, and the number of iron adhered to the mold is 0.

The invention relates to the technical field of comprehensive utilization of resources, in particular to a preparation method of aerated concrete based on lithium slag-waste photovoltaic panel-vanadium titanium slag. According to the preparation method, low-carbon powder prepared from steel solid waste, electric power industry solid waste, coal-based solid waste, nonferrous metallurgy solid waste and chemical solid waste is combined with mineral composition and content characteristics of the green low-carbon cement clinker, and replacement of the Portland cement clinker is achieved; chemical solid waste and non-metal mine solid waste are used for replacing all calcium raw materials, namely quick lime; the iron tailings are used as a high-silicon raw material to replace a silicon raw material, namely river sand or fly ash, in traditional production; the non-ferrous industry solid waste (lithium slag) and the electric power industry solid waste (desulfurized gypsum) are used as retarders to replace gypsum in traditional raw materials, through the synergistic effect of the four materials, the prepared autoclaved aerated concrete meets the standard requirement, the utilization rate of industrial solid waste is effectively increased, and the production cost of enterprises is remarkably reduced.

The invention discloses a method for producing high-grade titanium slag by smelting reduction of titanium concentrate, which comprises the following steps: (1) mixing titanium concentrate pellets and coke, adding the mixture into a reduction melting furnace, and adding limestone to control the binary alkalinity of final slag to be 1.13-1.18; and (2) natural gas is injected into a tuyere of the reduction melting furnace, the theoretical combustion temperature of the tuyere is controlled to range from 1900 DEG C to 1950 DEG C, smelting reduction and slag-iron separation are carried out, and then the high-grade titanium slag can be obtained. According to the method, tuyere total oxygen smelting is carried out, and high-melting-point substances TiN and Ti (C, N) are prevented from being formed in a high-temperature area of a hearth in the high-titanium ore smelting process from the source; meanwhile, natural gas is injected through a tuyere, the theoretical combustion temperature is reduced to 1950 DEG C or below through CH4 cracking strong heat absorption, and the amount of titanium entering molten iron through reduction is greatly reduced; the two measures synergistically improve the fluidity of the slag iron and ensure smooth operation of the smelting process. By means of the method, low-carbon smelting of the titanium concentrate can be achieved, and the TiO2 grade of the obtained high-grade titanium slag exceeds 80%.

The utility model provides a high titanium slag autogenous mill, and belongs to the technical field of high titanium slag treatment. The high titanium slag autogenous mill comprises an autogenous grinding cover and an autogenous grinding through hole mechanism, an autogenous grinding barrel is installed in the autogenous grinding cover, material holes are formed in the surface of the autogenous grinding barrel, a mounting opening is formed in the top of the autogenous grinding cover, a mounting cover located on the outer side of the mounting opening is fixedly connected to the top of the autogenous grinding cover, and a lifting frame is movably connected to the interior of the mounting cover. The two sides of the lifting frame are fixedly connected with rotating covers, the through hole seats are movably connected to the inner sides of the rotating covers, the bottoms of the through hole seats are fixedly connected with through hole columns located in the material holes, and the rotating reset mechanisms are arranged on the inner sides of the rotating covers. And dredging force is applied to materials in the material holes, so that material particles are separated from the material holes, the situation that the material holes are blocked due to the influence of the material particles during working is avoided, and the working liquidity of the material holes is improved.

The application relates to the technical field of materials, in particular to a calcium titan-aluminate refractory material taking aluminum-titanium slag as raw material and a preparation method thereof, which comprises aluminum-titanium slag, industrial alumina, modified zirconium-magnesium powder, modified lanthanum-yttrium powder, active alumina and boric acid. The modified zirconium-magnesium powder and the modified lanthanum-yttrium powder are used to resist fluorine ion erosion in cooperation, and the active alumina is used to enhance the fluorine resistance function of the modified powder, so that the fluorine resistance of the calcium titan-aluminate refractory material in a fluorine-rich refining slag environment is improved, and the service life of the calcium titan-aluminate refractory material is prolonged compared with conventional calcium titan-aluminate refractory materials.