39results about How to "Lower iron levels" patented technology

The invention provides a method for preparing vanadium pentoxide from iron-containing ammonium metavanadate, which comprises the following steps: S1) mixing iron-containing ammonium metavanadate with water to obtain ammonium metavanadate slurry; s2) mixing the ammonium metavanadate slurry with a complexing agent, adjusting the pH value to 1.5-2.5, carrying out iron dissolving reaction, and carrying out solid-liquid separation to obtain ammonium polyvanadate; 3, ammonium polyvanadate is calcined, and vanadium pentoxide is obtained.According to the method for preparing vanadium pentoxide from iron-containing ammonium metavanadate, the technical thought of acid dissolution-complexing iron removal is provided, the content of iron in vanadium pentoxide is effectively reduced, the process is simple, and the process cost is low.

The invention belongs to but not limited to the technical field of metal impurity removal, and particularly relates to a method and system for removing iron elements in secondary aluminum based on a centrifugal casting method.The method comprises the steps that S1, raw materials are prepared, specifically, secondary aluminum raw materials are collected, classified and treated, impurities and oil stains in the secondary aluminum raw materials are removed, and the quality of the raw materials is ensured; s2, preheating treatment is conducted, specifically, the secondary aluminum raw material is heated to a certain temperature to reach a proper casting temperature; s3, centrifugal casting is conducted, specifically, centrifugal casting equipment is adopted, the preheated secondary aluminum raw material is injected into a rotating mold, and iron elements in molten aluminum are gathered towards the wall face of the mold under the action of centrifugal force; s4, separation and collection: after the molten aluminum is cooled and solidified, the casting is taken out of the mold, an iron element enrichment layer on the surface of the casting is removed through a mechanical or chemical method, and secondary aluminum with the low iron content is obtained; and S5, follow-up treatment is conducted, specifically, the obtained low-iron-content secondary aluminum is further treated, including refining and alloying, so that different application requirements are met.

The method comprises the following steps that the lithium slag is sequentially subjected to first magnetic separation treatment, ore grinding treatment and second magnetic separation treatment, and iron concentrate and magnetic separation treatment tailings are obtained; the magnetic separation treatment tailings are sequentially subjected to first-stage acid treatment and second-stage acid treatment, and iron-removed and desulfurized lithium slag is obtained; wherein the acids used in the first-stage acid treatment are citric acid and hydrochloric acid, and the acids used in the second-stage acid treatment are citric acid and nitric acid. According to the method, two times of high-strength magnetic separation and two times of acid treatment are combined, the removal process of iron and sulfur in the lithium slag is optimized, and the iron removal and sulfur removal efficiency is remarkably improved.

The invention provides a red mud treatment method. The treatment method effectively solves the problems that in the prior art, red mud is complex in component, poor in economical efficiency, poor in red mud magnetic concentrate grade and low in iron recovery rate, magnetic tailing resources are not fully utilized, the cost is low, and the like through electromagnetic magnetization pre-reduction roasting treatment, magnetic separation enrichment of iron concentrate powder, smelting reduction iron extraction, smelting tailings building application and magnetic separation tailing enrichment and aluminum extraction. The method solves the problems of difficulty in operation of a melting ironmaking process and poor building material performance of slag in the prior art, so that iron and aluminum in the red mud are fully recycled, and the economic benefit of red mud treatment is remarkably improved.

The invention discloses a tailing-free treatment method for flotation tailings of a metal mine, which comprises the following steps: adding oxalic acid into ore pulp of the flotation tailings of the metal mine to adjust the pH value of the ore pulp, and then adding butyl xanthate and terpenic oil for sulfur roughing; performing blank concentration on a foam product obtained by sulfur roughing for three times to obtain sulfur concentrate; the method comprises the following steps: performing low-intensity magnetic separation on sulfur separation tailings obtained by sulfur roughing, performing sedimentation desliming on the tailings obtained by low-intensity magnetic separation to obtain micron-sized fine silt and a crude product, performing roughing on the crude product for five times, adding an adjusting agent of oxalic acid and 2-hydroxypropane-1, 2, 3-tricarboxylic acid combination, lauryl amine and sodium oleate in each time of roughing, blank concentration is conducted on a foam product 1 obtained through first-time roughing to obtain feldspar concentrate 1, foam products and micron-sized fine silt obtained through subsequent roughing are filtered and dried to obtain feldspar concentrate 2, and after fifth-time roughing is finished, ore pulp is filtered and dried to obtain quartz concentrate. The problem of land and environment damage caused by tailing stockpiling can be solved, and tailing resource utilization is achieved.

The present disclosure relates to the technical field of sodium ion battery negative electrode materials, in particular to a preparation and purification process of a biomass hard carbon material for sodium ion battery negative electrodes and application. The preparation and purification process comprises the following steps: providing biomass carbonization material, preparing a first mixed acid solution comprising nitric acid, hydrochloric acid and hydrofluoric acid, and performing first acid washing; then preparing a second mixed acid solution comprising organic acid, chelating agent and surfactant; performing second acid washing; then performing a ball milling process together with the second mixed acid solution; and finally calcining under a nitrogen atmosphere to obtain a biomass hard carbon material for sodium ion battery negative electrodes.

The invention discloses a secondary aluminum iron removal method, and belongs to the technical field of secondary aluminum iron removal, and the method comprises the following steps: adding a refining agent, an Al-3B alloy and an Al-10Sn alloy to act on a secondary aluminum alloy melt, removing impurity elements Fe, B and Sn to promote a Fe-rich phase to settle, so that the Fe-rich phase in secondary aluminum is mainly gathered at the bottom, and then cutting off the bottom. According to the method, the refining agent, the Al-3B alloy and the Al-10Sn alloy are added into the regenerated aluminum melt, so that a Fe-rich phase can be settled to the bottom of the melt, the iron removal effect is achieved, and the highest iron removal rate can reach 44.51%.

The invention discloses a heating concentration device, and belongs to the field of chemical equipment. The heating concentration device is cylindrical closed equipment composed of an outer layer structure, a middle layer structure and an inner layer structure, the outer layer of the device is a stainless steel shell, the middle layer is an insulating acid-resistant heat preservation material, the inner layer is a graphite kettle, the graphite kettle is provided with a sealing cover, and the graphite kettle and the sealing cover form a cylindrical closed space. The device is reasonable in layout, simple in structure, small in fluid resistance, uniform in fluid distribution, easy to install, overhaul, maintain and clean, wide in application range and suitable for heating, concentration and impurity removal production systems of various specifications and models.

The invention relates to the technical field of titanium sponge processing, in particular to a novel titanium sponge feeding process which comprises the following steps: S1, checking the air tightness of a reduction furnace and a reactor, and heating four heating areas of the reactor from top to bottom to preset temperature; s2, after the temperature is reached, starting a first feeding stage; s3, after the time reaches a specified value, starting a second feeding stage; s4, after the time reaches a specified value, starting a third feeding stage; s5, when the feeding amount of titanium tetrachloride reaches a preset value, the reduction reaction is finished; and S6, carrying out subsequent distillation and crushing processes. According to the novel titanium sponge feeding process, the problem that the temperature in the middle stage of reaction is too high is effectively solved, the titanium tetrachloride and the liquid magnesium are added in a parallel-flow mode, the original method that all the liquid magnesium is added into a reactor at a time is abandoned, and the liquid magnesium is added step by step, so that the space of the reactor is sufficient, and heat dissipation is more sufficient; therefore, the temperature in the middle stage of reaction is effectively reduced.

The invention relates to a method for treating nickel-containing waste residues generated by nitrogen trifluoride electrolysis. The method comprises the following steps: crushing fluorine-containing nickel residues into solid powder; dissolving the fluorine-containing nickel slag solid powder by using an oxidizing solution, controlling the temperature to be 30-60 DEG C and the pH to be 3.5-5, and stirring until the fluorine-containing nickel slag is completely dissolved, so as to obtain a mixed turbid liquid a containing nickel fluoride, ammonium bifluoride and ferric hydroxide; filtering to obtain ferric hydroxide precipitate and a mixed solution b; adjusting the pH value of the mixed solution b to 7-9 by using a sodium hydroxide solution, and filtering to obtain a nickel fluoride solid and a mixed solution c; heating and concentrating the mixed solution c, and cooling and crystallizing to obtain a sodium fluoride crystal and an ammonium fluoride solution; and evaporating the ammonium fluoride solution to dryness to obtain ammonium fluoride crystals. According to the method, comprehensive recycling of the nickel-containing waste residues generated in the nitrogen trifluoride electrolysis process is achieved, the main nickel element is recycled, and it is ensured that other valuable elements such as fluorine and ammonium in the waste residues are effectively extracted and reused.

The present invention discloses an application of eleutheroside E or its pharmaceutical salt in the preparation of a drug for preventing or treating severe acute pancreatitis. Studies have found that eleutheroside E has a significant effect on resisting severe acute pancreatitis. The present invention has been proved by animal experiments: 3.5% sodium taurocholate was used to retrograde pancreaticobiliary injection to induce severe acute pancreatitis mouse model experiments, and it was found that eleutheroside E can significantly reduce the activity levels of serum amylase and lipase in mice, significantly reduce the iron content of pancreatic tissue in mice, reduce the oxidative stress response index MDA, ROS level, increase GSH level, increase Nrf2, HO-1, GPX4 protein expression levels, reduce the iron death marker ACSL4 protein expression level, and improve pancreatic tissue pathological damage. Therefore, eleutheroside E can prevent or treat severe acute pancreatitis.

The utility model discloses a kind of magnetic separation slag removal tank, including box, the inside of the box is cavity structure, the upper end of the box is provided with powder inlet, the lower end of the box is provided with powder outlet, the inside of the box is equipped with multiple strong magnetic rods, the strong magnetic rod is along the inside diagonal direction of box inclination and equidistant arrangement, the front, rear position in the box is fixed with support, the support is along the inside diagonal direction of box inclination arrangement, the support is uniformly distributed with placing groove along its length direction, long shaft is transversely placed between the placing groove of the front, rear two supports, the strong magnetic rod is fixed on the outer side of long shaft, and the present magnetic separation slag removal tank can greatly reduce the iron content in aluminium oxide powder, ensure the production quality of raw aluminium.

The invention relates to a low-iron-consumption low-silicon duplex few-slag smelting method, and belongs to the technical field of smelting. The smelting method comprises the following steps: (1) feeding; (2) blowing; (3) terminal point control; (4) tapping; (5) splashing slag; in the step (1), 70%-73% of molten iron and the balance of scrap steel are put into a converter, and the converter is adopted for smelting; in the molten iron, w [P] is not more than 0.18%, and w [Si] is not more than 0.40%. According to the method, the dephosphorization efficiency of the converter is improved while the smelting slag amount is reduced, w [P] in chemical components of molten steel at the end point of the converter is smaller than or equal to 0.015%, the step of waiting for component detection after blowing is completed is omitted, and the smelting period is shortened.

The invention discloses a method for predicting the content of Al and Fe in an equilibrium state through aluminum-rising and iron-removing operation in hot galvanizing, which comprises the following steps: carrying out aluminum-rising and iron-removing operation on zinc liquid in the last production period, and adding a zinc ingot with higher aluminum content; the temperature T is kept unchanged, sampling is conducted, and the aluminum content Fe0 and the iron content Al0 in the zinc liquid in the aluminum rising and iron removing operation are measured; calculating to obtain Al and Fe contents in an equilibrium state; according to the method, the aluminum content and the iron content reaching a Zn-Fe-Al metallographic equilibrium line are calculated according to the aluminum content and the iron content in the zinc liquid in the aluminum rising and iron removing operation, the aluminum content and the iron content in the zinc liquid in the equilibrium state of the zinc liquid can be judged in advance, and the method is a conventional method for removing scum in the hot galvanizing process. Therefore, the GI product production process is quickly determined.

The invention discloses high-wear-resistance copper-based active brazing filler metal for superhard abrasive particles. The high-wear-resistance copper-based active brazing filler metal comprises, by weight, 5-18 parts of nickel, 7-12 parts of tin, 8-15 parts of titanium, 1-3 parts of gallium, 1-5 parts of germanium, 1-5 parts of iron, 0.5-5 parts of manganese, 0.5-2 parts of silicon, 0.01-0.1 part of rare earth and the balance copper. The brazing method of the brazing filler metal comprises the steps that the high-abrasion-resistance copper-based active brazing filler metal is laid on the to-be-welded face of the steel base body, the super-hard abrasive is arranged on the high-abrasion-resistance copper-based active brazing filler metal, a brazing assembly is obtained, and brazing of the super-hard abrasive is obtained after brazing in a vacuum furnace and heat preservation aging treatment are adopted. The obdurability and wear resistance of the copper-tin-titanium brazing filler metal and the brazing gold thereof are improved by avoiding or reducing the formation of a thick CuSn3Ti5 phase in the copper-tin-titanium brazing filler metal and the brazing gold thereof, regulating and controlling the form and size of the phase, eliminating or reducing the deterioration influence of the phase on the wear resistance of the brazing filler metal, adding nickel, iron, silicon and manganese elements and controlling the component proportion and the brazing process.

The invention discloses application of a rice iron deficiency tolerance gene OsIDT1 (Oryza sativa L. iron deficiency tolerance gene 1). The sequence of the iron-deficiency tolerance gene OsIDT1 is as shown in SEQ ID NO. 1. The gene can be applied in multiple aspects of promoting the iron element to be transferred from mature tissues to new tissues, improving the iron utilization efficiency of the rice and the like. The biological function of the iron-deficiency tolerance gene OsIDT1 in rice is found through a large number of experiments, and the iron element can be prevented from being transferred from a mature tissue to a new tissue by knocking out the gene, so that the iron utilization efficiency, the yield, the grain iron content and the like of the rice are reduced; the over-expression of the gene can promote the iron element to be transferred from mature tissues to new tissues, so that the iron utilization efficiency, the yield, the grain iron content and the like of the rice are improved.

A kind of process method for recovering iron and zinc from iron-zinc-containing sludge, which is carried out in the following steps: roasting the iron-zinc-containing sludge at 600-800 ℃ in an oxidizing environment, Zn(OH)2 is decomposed into ZnO, and Fe(OH)3 is decomposed into Fe2O3, obtaining an oxidized roasting product; reducing roasting 1 of the oxidized roasting product at 500-700 ℃, obtaining a reduced roasting product; grinding the reduced roasting product to a content of 65%-85% of -0.025 mm; weak magnetic roughing and cleaning of the ground product at a magnetic intensity of 79.62-131.34 kA / m, obtaining a final concentrate with an iron grade of more than 55%; and reducing roasting 2 of the tailings with coke as a reducing agent at 1100-1200 ℃, distillation to obtain elemental zinc, with a zinc recovery rate of more than 90%, a zinc content in the roasting slag of less than 0.5%, and the roasting slag being treated as waste slag. The method is used for treating iron-zinc-containing sludge obtained by chemical precipitation of electroplating zinc wastewater, and recovers iron and zinc by combined beneficiation and smelting, reduces the content of heavy metals in the iron-zinc-containing sludge, recovers valuable metals, solves the problem of environmental pollution, and provides a zinc recovery method for solid waste resources.

The invention discloses a method for enriching and selectively leaching scandium in weathering crust type scandium ore, which belongs to the technical field of physical separation and chemical industry, and comprises the following steps: carrying out crushing and magnetic separation on the weathering crust type scandium ore to obtain iron and titanium magnetic components and scandium-rich non-magnetic components; and mixing the scandium-rich non-magnetic component with ferric sulfate, roasting, and adding water into the roasted clinker for leaching reaction to obtain scandium-containing leachate. According to the method, scandium in the weathering crust type scandium ore can be effectively enriched and leached, good potential economic benefits are achieved, and a technical route is provided for comprehensive resource utilization of the weathering crust type scandium ore.

The application discloses a pre-treatment method of carbon baking filler for aluminum, aiming at controlling the migration and accumulation of iron impurities from the filler, comprising the following steps: S1, screening the filler to be treated according to the particle size, and separating the filler into at least two different particle size intervals, wherein the particle size of the filler in at least one particle size interval is less than 2 mm; S2, performing air separation purification on the filler with a particle size less than 2 mm to remove iron-containing particles; S3, sequentially performing weak magnetic separation treatment and strong magnetic separation treatment on the filler in each particle size interval obtained in the step S1 to remove iron-containing impurities; S4, performing acid treatment on the filler after the air separation purification and the magnetic separation treatment to remove an iron oxide film attached to the surface of the filler particles; and S5, uniformly mixing the filler in each particle size interval after the treatment according to the original mass proportion before the screening.

The quartz sand pickling equipment comprises a reaction kettle and a mother liquor tank, a feeding hole is formed in the top of the reaction kettle, an acid inlet and a second acid discharge hole are respectively formed in the bottom of the reaction kettle, and a sand discharge hole is formed in the side surface of the reaction kettle; a first liquid inlet and a second liquid inlet are formed in the top of the mother liquid tank, the first liquid inlet is connected with the second acid discharge port through a pipeline, the second liquid inlet is connected with an outlet of an acid pump through a pipeline, and an inlet of the acid pump is connected with an acid supplementing tank; a liquid outlet is formed in the bottom of the mother liquid tank and is connected with the acid inlet through a pipeline; an ion concentration detection device is fixedly mounted in the mother liquor tank and is connected with a concentrator through a signal line, the concentrator is connected with a signal converter, and the signal converter is connected with a computer; and valves are arranged at the second acid discharge port, the sand discharge port and the liquid outlet. The device not only realizes the recycling of the pickling waste liquid, but also improves the quality of quartz sand.

The invention discloses a method for efficiently separating and recovering lithium elements from waste lithium iron phosphate, and belongs to the technical field of battery recovery. The invention first obtains waste lithium iron phosphate powder from waste lithium iron phosphate batteries, and then accurately calculates the optimal pH value of the reaction system at the real-time temperature according to the leaching reaction temperature and related thermodynamic data, and introduces a low-concentration phosphate solution into the leaching reaction and adjusts the pH value of the system to the optimum, thereby ensuring that most of the iron ions can be effectively precipitated in the form of iron phosphate during the reaction process, thereby achieving efficient separation of lithium and iron elements, and finally adjusting the pH value of the filtrate and adding a saturated phosphate solution to recover high-purity lithium phosphate. The invention can accurately calculate the optimal pH value corresponding to different reaction temperatures according to the reaction temperature and related thermodynamic data, thereby saving a large amount of early exploration experimental cost and time, improving the overall production efficiency, and enhancing the universality of the process.

The invention discloses a production method of single-suede ultra-white patterned glass, and relates to the technical field of photovoltaic glass production, and the technical key points are as follows: raw materials are subjected to iron removal and crushing treatment to obtain powder, the powder is added into a melting kiln to be smelted, and a clarifying agent is added to obtain molten glass; the molten glass flows into a tin bath to form a glass tape, and the glass tape is subjected to calendaring molding by using an embossing roller to form a single suede surface and an embossed surface; annealing the semi-finished glass, and naturally cooling to obtain a glass finished product; the problems that after the iron content in the ultra-white patterned glass raw material reaches a certain limit value, the effect of further reducing the iron content is no longer remarkable for improving the light transmittance, and the cost is high are solved; according to the invention, while the same light transmittance parameter is achieved, the obvious cost advantage is shown.

The present application provides a method for carbonation and carbon sealing of steel slag in a steelmaking process, and relates to the field of metallurgy. The method for carbonation and carbon sealing of steel slag in a steelmaking process comprises: during the process of pouring the steel slag into a slag stewing pool, a convection jet cooling gas intersecting the pouring direction of the steel slag is added to assist the steel slag granulation pretreatment and the sensible heat primary heat exchange process, until the steel slag is cooled to 800-1000°C, and the obtained high-temperature steam is recovered to realize heat recovery; after the slag is poured, the steel slag pouring port is blocked, and the steel slag in the hot stuffy device is covered and sprayed with carbon dioxide-containing gas, hot stuffy powder, and the corresponding coal gas is collected to complete the secondary heat exchange; finally, the jaw crusher is used for primary crushing, rod mill fine grinding and magnetic separation are used to complete the minimization of the particle size and iron content of the tailings. The method provided by the present application realizes the efficient separation and utilization of hot steel slag without the need for high pressure, auxiliary processes for adding grinding aids, etc., and the iron content in the tailings is reduced by less than 2%.

The invention discloses a large-diameter pipeline inner wall atomization anticorrosion area simulation system and method, and belongs to the field of power plant chemistry, and the system comprises an atomization nozzle, an atomization device, an observation pipeline, a liquid drop observation plate, an artificial intelligence model, a corrosion measuring instrument, and a camera. The atomization device provides water for simulating atomization of the inner wall of the large-diameter pipeline; the observation pipeline is a barrel-shaped white plastic film; a liquid drop observation plate is arranged at an outlet of the observation pipeline, the camera and the liquid drop observation plate are respectively connected with an artificial intelligence model, and the artificial intelligence model outputs an analysis result to the corrosion measuring instrument. The system can effectively simulate the actual working condition of the site, the simulation method is simple, ingenious and practical, on one hand, the atomization corrosion prevention area of the inner wall of the large-diameter pipeline is visually visualized through the white transparent barrel-shaped plastic film and the pigment, and on the other hand, through the camera, the artificial intelligence model, the liquid drop observation plate, the corrosion measuring and calculating instrument and other advanced means, the large-diameter pipeline inner wall corrosion prevention area is obtained. The method plays an important role in evaluation of field actual large-diameter pipeline inner wall atomization corrosion prevention.

This invention discloses a method for the resource recovery and full utilization of Bayer process red mud. First, the red mud undergoes a hydrogen-based mineral phase conversion, causing thermal cracking. Then, iron is recovered from the red mud through magnetic separation. The magnetic separation tailings are leached with phosphoric acid to extract valuable metals, effectively improving the recovery of valuable metals from the red mud while minimizing equipment corrosion. The leaching tailings, due to the decomposition and removal of alkaline components and the formation of phosphates during the leaching process, can be used as a raw material for the production of slow-release mineral fertilizers. The method described in this invention enables the full recovery of valuable metals such as iron, aluminum, and gallium from Bayer process red mud, and allows the leaching residue to be fully utilized in the production of mineral fertilizers. Therefore, this invention, focusing on the resource recovery and full utilization of Bayer process red mud, is of great significance for improving resource security and the treatment of large-scale solid waste, and has promising application prospects.

The present invention relates to the field of glass production equipment, and discloses an ultra-white float glass production device, including an auxiliary material input mechanism distributed on the melt feeding mechanism, and cooperates with a built-in suspension and a transfer tube to transport auxiliary raw material decolorizer and flux of ultra-white glass into the melt feeding mechanism; an output transmission mechanism is distributed on the melt feeding mechanism, and cooperates with a drag frame and a magnetic separation column to generate a linkage force to drive the operation of the feeding magnetic separation structure; a tin floating operation mechanism is located on the main frame, and cooperates with a material transfer elbow to receive the molten raw materials and perform tin floating operations, while gradually reducing the temperature of the raw materials. Through the design of the auxiliary material input mechanism, during the operation of the melt pool, the auxiliary materials can be accurately added to the molten quartz sand at an appropriate time and position, achieving precise timing and quantitative input of the auxiliary materials, and ensuring full contact and reaction between the auxiliary materials and the molten raw materials, which is crucial for controlling the composition and quality of ultra-white glass.

The present invention relates to a converter steelmaking dephosphorization agent and a preparation method and use thereof, in order to solve the problem that a lot of lime and slag-forming materials are added in the dephosphorization stage of the current converter steelmaking, resulting in large iron loss, slow slag forming speed and unsatisfactory slag forming effect. The dephosphorization agent comprises, by weight: 7-12 parts of solidified casting slag, 7-21 parts of lime, and 2-19 parts of light-burned material. The preparation method comprises: treating the ladle casting slag with an auxiliary agent to obtain solidified casting slag, and then mixing the solidified casting slag, lime and light-burned material according to a formula to obtain a converter steelmaking dephosphorization agent. The converter steelmaking dephosphorization agent provided by the present invention can achieve the target requirements of small slag amount, low oxidizability and low consumption without affecting dephosphorization and production.

The present invention discloses a renewable heat-treatment-free integrated die-cast aluminum alloy and a preparation method thereof, belonging to the technical field of aluminum alloy materials. The weight percentage of each component in the die-cast aluminum alloy is Mg: 5.0-8.0%, Si: 2.0-3.8%, Mn: 1.0-1.5%, Zn: 0.1-0.5%, Be: 0.003-0.005%, Nb: 0.02-0.08%, Ti: 0.0175-0.07%, Mo: 0.005-0.02%, Fe<0.2%, the total amount of other impurities is ≤0.5%, and the balance is Al. The die-cast aluminum alloy phase includes a matrix α-Al solid solution, Mg 2 Si and BCC phase, BCC phase is evenly distributed in the grain boundary area of ​​die-cast aluminum alloy, the high melting point BCC phase has a hydrogen adsorption capacity of >150ml / g in the temperature range of 20-700℃, and it does not melt when heated to 1980℃ and kept for 2h, the hydrogen content of aluminum liquid is ≤0.05ml / 100g Al, and the slag content is ≤0.01mm 2 / kg, the obtained heat-treatment-free integrated die-casting aluminum alloy has high resistance to hydrogen embrittlement and excellent strength and toughness.

The invention provides a basalt tank furnace system with hydrogen as a main fuel and a melting method, and the system comprises a furnace body, a control system, a flue port, a feeding device, basalt ore and melt, an auxiliary electric melting assembly, a combustion device, a sensor, a discharge port, a baffle brick, a collection box, a melting area, a clarification, precipitation and homogenization area and a cooling temperature regulation area, wherein the combustion device comprises a fuel conveying system, a combustion system, a basalt fiber tank furnace and a control system, the fuel conveying system comprises a hydrogen gas conveying pipeline and a natural gas conveying pipeline, and gas outlet ends of the hydrogen gas conveying pipeline and the natural gas conveying pipeline are connected with a gas mixing pipeline. After mixing, the gas outlet ends of the gas mixing pipeline and the oxygen pipeline are connected with the combustion system, all the gas pipelines control the ventilation flow through the flow control valve, and by means of the system and the melting method, carbon emission in the basalt material production process can be effectively reduced; and meanwhile, substances such as iron in the basalt melt can be reduced and precipitated, so that the formability of the basalt melt is improved, and the corrosion of the basalt melt to subsequent process equipment is reduced.

The invention relates to the technical field of titanium dioxide preparation, and particularly discloses a high-brightness white anatase titanium dioxide pigment and a preparation method thereof. The preparation method comprises the following steps: adding titanyl sulfate into water at the temperature of 60-65 DEG C, heating to 95-97 DEG C at the speed of 2.3-3.5 DEG C / min for hydrolysis, adjusting the pH value of a system to 2.2-2.4 in the hydrolysis process, then adding anatase seed crystals, and filtering to remove filtrate after the hydrolysis reaction is finished, so as to obtain titanium metasulfate; adding titanium metaacid into water for pulping dispersion, and adding a reducing agent in the pulping process; performing sulfuric acid pickling and drying to obtain a crude product; blending, grinding and screening the crude product and a modifier to obtain a modified crude product; and carrying out air jet pulverization on the modified crude product and metal salt to obtain the product. According to the preparation method of the high-brightness white anatase titanium dioxide pigment, the product has higher whiteness, stability and tinting strength and is more suitable for being used in a plastic system.