863 results about "Fluorite" patented technology

The invention discloses a radiation refrigeration exterior wall tile and a preparation process thereof, and relates to the technical field of ceramic tiles. The radiation refrigeration external wall tile comprises a green body, a ground coat layer, a pattern layer and a protective glaze layer from inside to outside, the ground glaze layer comprises the following components in parts by mass: 40-60 parts of ground glaze layer ceramic basic glaze, 15-35 parts of cooling powder, 6-12 parts of calcined talc, 4-8 parts of calcined zinc oxide, 3-6 parts of dolomite, 2-4 parts of fluorite, 3-6 parts of calcined kaolin, 0.2-0.5 part of sodium carboxymethyl cellulose, 0.2-0.5 part of sodium tripolyphosphate and 40-55 parts of clear water; the protective glaze layer comprises the following components in parts by mass: 60-70 parts of protective glaze layer ceramic basic glaze, 10-20 parts of cooling powder, 5-10 parts of albite, 3-5 parts of calcined talc, 2-4 parts of calcined zinc oxide, 0.2-0.5 part of sodium carboxymethyl cellulose, 0.2-0.5 part of sodium tripolyphosphate and 40-55 parts of clear water. By adjusting the component proportion of the ground coat layer and the protective glaze layer and adding the cooling powder for compounding, the basic performance of the wall brick can be ensured, and the reflection and radiance of the wall brick to infrared rays and visible light can be improved.

The invention relates to the technical field of mineral processing data processing, in particular to a preparation method of a high-calcium fluorite and barite paragenic ore combined inhibitor, which comprises the following steps: collecting multi-source process mineralogy data output by an X-ray fluorescence spectrometer, an automatic mineral analyzer and the like, converting the multi-source process mineralogy data into a structured format, and constructing a process mineralogy database; based on historical data of a database, a random forest algorithm is adopted to train a correlation model, the correlation rule of mineral characteristics such as calcite content, fluorite particle size distribution and barite monomer dissociation degree and the inhibitor ratio is learned, and parameters of the optimization model are fed back through a flotation test. The combined inhibitor solves the problem of selective separation caused by similar surface properties through a synergistic effect of covering active sites of fluorite calcium by modified water glass, regulating active sites of barite barium by citric acid and assisting in enhancing inhibition by modified starch, and solves the problem of low efficiency of multi-source data integration through structured data processing and model closed-loop optimization; the flotation separation efficiency and the concentrate grade are improved.

The invention discloses a high-oxygen-storage zirconium solid solution material and a preparation method, and belongs to the technical field of rare earth catalytic materials, and the method comprises the following steps: precursor preparation, ultrasonic dispersion, double-gradient precipitation, ultrasonic aging, solid-liquid separation, three-section roasting and furnace cooling. Through the synergistic effect of double-gradient precipitation and ultrasonic aging, coarse grains and non-uniform particle size distribution are avoided, and the material is not prone to abnormal growth of the grains and structural collapse in long-term high-temperature service. Meanwhile, according to the gradient roasting process, through step-by-step regulation and control of crystal densification and crystal lattice reconstruction, separation of a fluorite phase and a pyrochlore phase easily occurring in traditional low-temperature single-section roasting is reduced, a stable crystal phase structure is maintained, it is ensured that the material can still keep sufficient active surface and pore channel structures under the working conditions of high temperature and thermal shock alternation, and the performance of the material is improved. The oxygen storage capacity and the long-term durability of the catalyst carrier are obviously improved.

The invention relates to the technical field of ultralow-sulfur peritectic steel smelting, and particularly discloses a method for producing an ultralow-sulfur peritectic steel continuous casting round billet through a full-scrap-steel electric arc furnace. According to the method for producing the ultra-low-sulfur peritectic steel continuous casting round billet through the full-scrap steel electric arc furnace, the corresponding conditions of burdening, electric arc furnace smelting, molten steel slagging and deoxidizing, LF refining, VD vacuum smelting and peritectic steel round billet continuous casting are controlled, a specific amount of low-sulfur scrap steel is selected, and the oxygen supply strength in the electric arc furnace smelting process is limited; the carbon content during tapping of an electric arc furnace is guaranteed in a carbon spraying mode, the adding opportunity of aluminum ingots, premelting refining slag, fluorite, lime and aluminum wires is limited in the molten steel slagging and deoxidizing process, the aluminum content of molten steel during LF refining is controlled, the top slag content of VD vacuum smelting is limited, a high-alkalinity low-sulfur carbon-free covering agent is added in the initial continuous casting stage of peritectic steel round billets, and the high-alkalinity low-sulfur carbon-free covering agent is added. The ultra-low-sulfur peritectic steel continuous casting round billet with excellent comprehensive performance is prepared, the surface is free of sunken and crack defects, and the defect rate is basically zero.

The invention discloses a high-strength steel welding rod for 1000 MPa water and electricity and a preparation method and application of the high-strength steel welding rod. The invention belongs to the technical field of welding materials. The technical problems that the low-temperature impact toughness of an existing welding material for 1000 MPa-grade high-strength steel needs to be improved, and the welding cold crack sensitive index is too large are solved. The welding rod is composed of a core wire and a coating wrapping the surface of the core wire. Powder of the coating is formed by mixing marble, fluorite, rutile, silica powder, electrolytic manganese, ferrosilicon, graphite, ferromolybdenum, chromium metal, iron powder, nickel powder, sodium carbonate and sodium alginate. The welding rod has the advantages of good all-position welding process performance, stable electric arc, small flying speed, uniform coating melting, beautiful weld joint forming and good operability of welders. And weld metal has good mechanical properties. And the method is used for welding the high-strength steel for the 1000MPa-grade water

The invention belongs to an aluminum fluoride production technology, and particularly relates to a process and a system for producing aluminum fluoride by matching with a low-grade fluorite dry method, fluorite powder and sulfuric acid are added into a pre-reactor to be uniformly mixed and then are guided into a reaction furnace to be heated, and when the reaction furnace rotates, a free spiral structure in the reaction furnace rotates to promote the reaction of the fluorite and the sulfuric acid; discharging the calcium sulfate through a discharging spoon at the discharging end of the reaction furnace, and collecting the hydrogen fluoride volatilized from the reaction furnace; volatilized hydrogen fluoride enters a pre-purification tower and is treated to obtain purified hydrogen fluoride gas, the purified hydrogen fluoride gas and dried aluminum hydroxide are added into a fluidized bed to react to obtain aluminum fluoride and tail gas, and the tail gas enters a tail gas recovery treatment system. The problems that low-grade fluorite is poor in resource utilization rate, prone to crusting in a reaction furnace, low in fluorine utilization rate and the like are solved.

The invention relates to the technical field of steelmaking, in particular to a steelmaking process based on a Q420 slab, which comprises the following steps: molten iron, scrap steel and pig iron are put into a converter for melting to obtain molten steel, and the molten steel is smelted in the converter and then transferred into a ladle refining furnace for refining; acquiring a fluctuation period to determine whether the removal efficiency of the inclusions in the molten steel is qualified or not; determining the nodulation condition of the slag layer based on the judgment result that the removal efficiency of the inclusions is unqualified so as to determine that the viscosity of the whole slag layer is unqualified or the viscosity of the local slag layer is unqualified; the addition amount of fluorite is determined based on the judgment result that the viscosity of the overall slag layer is unqualified, or the pulse frequency of argon or the refining duration of molten steel is adjusted based on the judgment result that the viscosity of the local slag layer is unqualified; and the refined molten steel is subjected to vacuum degassing treatment and then subjected to continuous casting to obtain a slab, and after the slab is subjected to flaw detection, defect characterization parameters are determined so as to adjust the attenuation rate threshold value. The purification degree of the molten steel is improved.

The invention discloses a high-efficiency fluorite collecting agent and a preparation method thereof. The high-efficiency fluorite collecting agent comprises the following raw materials in parts by weight: 20-45 parts of oleic acid with different iodine values, 5-10 parts of an amidate surfactant, 3-5 parts of inorganic alkali or organic alkali and 10-25 parts of a low-carbon-chain alcohol compound. The amidate surfactant is a nonionic surfactant, the structural general formula of the amidate surfactant is R1-C (O) NH (CH2) nCH2-R2, in the formula, R1 is a hydrocarbon chain containing 12-18 carbon atoms, n is equal to 5-6, and in the formula, R2 is a functional group with a hydrogen bond effect. According to the fluorite collecting agent, the efficient recovery rate of fluorite is guaranteed, meanwhile, the grade of fluorite concentrate is improved to a certain degree, the using amount of the collecting agent is reduced, and the problem that the fatty acid fluorite collecting agent is poor in fluorite concentration efficiency is solved.

The invention relates to the technical field of fluorite ore beneficiation, discloses a fluorite ore flotation composite collecting agent and a preparation method and application thereof, and aims to solve the problems that an existing collecting agent is limited in applicability, insufficient in selectivity, poor in environmental stability and the like and is difficult to deal with separation of fluorite ore containing various impurities or under complex working conditions. The composite collecting agent is composed of dehydroabietylamine, sodium oleoyl sarcosinate, sodium silicate-citric acid composite salt, ethylene glycol butyl ether and a sodium carbonate-sodium bicarbonate buffer pair, all the components have a synergistic effect, dehydroabietylamine provides selective collecting and fine particle agglomeration functions, sodium oleoyl sarcosinate enhances adsorption stability, the composite salt inhibits gangue in a targeted mode, and therefore the adsorption efficiency is improved. Buffer pairs and ethylene glycol butyl ether guarantee the environmental adaptability of a system. The collecting agent can adapt to various fluorite ores with high sulfur, high silicon, low temperature and the like, can stably play a role under different water quality and working conditions, realizes efficient separation of fluorite and impurities, improves the separation efficiency and the concentrate quality, and is flexible in preparation process and convenient for industrial application.

The invention belongs to the technical field of crystallizer casting powder, and provides crystallizer casting powder for medium carbon steel and a preparation method of the crystallizer casting powder. The crystallizer casting powder comprises the following raw materials: 20-40 parts of wollastonite, 20-40 parts of magnesium slag, 2-6 parts of quartz, 1-5 parts of bentonite, 2-6 parts of flint clay, 3-10 parts of fluorite, 1-3 parts of sodium carbonate, 1-2 parts of manganese carbonate, 3-7 parts of boron glass powder, 2-4 parts of magnesia powder, 6-10 parts of a carbon material and 2-4 parts of a modified binder. The crystallizer casting powder disclosed by the invention is reasonable in proportion of chemical components, has proper melting speed and viscosity, effectively ensures the thickness of a liquid slag layer, and can be uniformly consumed, so that the continuous casting process is ensured to be carried out smoothly, and the quality defects of corner cracks, narrow edge bulging, corner transverse cracks and the like of a medium carbon steel casting blank are avoided.

The invention relates to the technical field of fluorite flotation reagents, in particular to a preparation method of a fluorite flotation collecting agent. The specific preparation method comprises the following steps: carrying out sulfonation reaction on sulfuric acid and benzene to obtain sulfonation reaction liquid; the method comprises the following steps: by taking oleic acid or acid oil as a raw material, adding sulfonation reaction liquid at 10-20 DEG C, and carrying out stirring reaction; adding alkali liquor to carry out neutralization reaction, controlling the temperature to be less than or equal to 80 DEG C, and adjusting the pH value to be 7-8; and a water phase is separated and removed, and a mixture containing oleate, sulfated oleate, hydroxyl oleate and stearic acid benzene sulfonate is obtained and serves as the fluorite flotation collecting agent. By controlling the proportion of sulfuric acid to benzene and adding oleic acid, on the basis of reducing product benzene residues, the collecting capacity is improved, good selectivity is achieved, and the problem of aromatic hydrocarbon residues existing in a flotation collecting agent prepared from aromatic hydrocarbons such as benzene as raw materials is solved.

The device comprises a connecting frame, a connecting cylinder is fixedly installed on the upper surface of the connecting frame, a smashing cylinder is installed on the upper surface of the connecting cylinder in a communicating mode, a smashing wheel is rotatably installed in the smashing cylinder, and a pushing and grinding mechanism is rotatably installed in the connecting cylinder; the pushing and grinding mechanism can grind the materials in the process of conveying the materials into the screening mechanism, and the screening mechanism is fixedly installed on the lower surface of the connecting frame and communicates with the lower end of the outer surface of the pushing and grinding mechanism. By means of the screening mechanism and the pushing and grinding mechanism, the processes of crushing, grinding and screening are combined together, fluorite concentrate enters the grinding stage immediately after being preliminarily crushed, particles are further refined, minerals with different particle sizes can be separated while grinding is conducted, and the treatment efficiency is greatly improved through the parallel operation mode.

The invention relates to the technical field of welding rod preparation, and discloses a steel matched welding rod for a high water head of a pumped storage power station and a production method of the steel matched welding rod. The coating is prepared from the following components in parts by weight: 25.0 to 36.0 parts of calcite, 26.0 to 35.0 parts of calcined fluorite, 3.0 to 6.7 parts of calcined natural rutile, 3.0 to 7.0 parts of quartz sand, 2.5 to 4.0 parts of spray silicon iron, 5.5 to 7.6 parts of nickel powder, 0.5 to 0.8 part of sodium carbonate, 0.3 to 0.6 part of CMC (Carboxymethyl Cellulose), 0.6 to 1.0 part of sodium alginate, 5.0 to 6.3 parts of low-carbon ferromanganese, 9.0 to 11.0 parts of atomized iron powder, 1.8 to 2.6 parts of ferrotitanium, 0.6 to 1.0 part of rare earth fluoride and 0.6 to 1.0 part of zirconium dioxide; the production method comprises the following steps: uniformly mixing the raw materials of the coating according to the ratio, adding the adhesive into the mixture, and uniformly mixing; and the mixture and the core wire are added into a plodder, the coating is prepared on the surface of the core wire, then low-temperature baking and high-temperature baking are conducted, and the welding rod is obtained.

This application relates to the field of metal surface treatment materials, specifically disclosing a silicon-integrated inorganic supercrystalline thermal energy powder and its preparation and application methods. The silicon-integrated inorganic supercrystalline thermal energy powder comprises raw material A and raw material B. Raw material A includes the following: magnesium oxide, sodium fluoroaluminate, sodium polyphosphate, zinc oxide, crystalline tin tetrachloride, silicon dioxide, and boric acid. Raw material B includes the following raw materials in parts by weight: spodumene, lithium carbonate, titanium dioxide, zinc silicate, sodium carbonate, antimony trioxide, albite, fluorite, boric acid, sodium hydroxide, and yttrium oxide. The inorganic supercrystalline thermal energy powder of this application has advantages such as corrosion resistance and oxidation resistance, good thermal stability, no damage from thermal cycling, high hardness, wear resistance and high temperature resistance, energy saving, water scale reduction, and the ability to replace organosilicon high-temperature resistant special coatings, baking paints, enamel paints, and ceramic floor glazes.

The invention discloses bloom ultrahigh-carbon wear-resistant ball steel continuous casting covering slag and a preparation method thereof, and belongs to the technical field of steelmaking metallurgy auxiliary materials. The high-temperature-resistant electric smelting material is prepared from the following raw materials in parts by weight: 15-28 parts of wollastonite powder, 20-40 parts of an electric smelting pre-melting material, 3-6 parts of lithium metaborate, 2-8 parts of boron glass, 2-4 parts of sodium fluoride, 5-13 parts of sodium carbonate, 2-7 parts of barium fluoride, 7-11 parts of fluorite powder, 2-5 parts of electrode graphite, 2-5 parts of high-carbon amorphous graphite, 2-4 parts of N660 carbon black and 2-4 parts of dextrin. According to the mode, the casting liquid has relatively low viscosity, relatively low melting point and relatively high alkalinity, the lubrication of a casting blank is improved, the capability of absorbing floating inclusions in molten steel is improved, the occurrence rate of cracks and bleed-out on the surface of the casting blank is reduced, the surface and subcutaneous quality of the casting blank is improved, and the production efficiency of continuous casting is improved; the casting powder is particularly suitable for continuous casting production of bloom ultrahigh-carbon wear-resistant ball steel.

The invention discloses a shipborne thermochemical energy storage system suitable for offshore wind power, relates to the technical field of offshore power generation and energy storage, and solves the problems of high operation and maintenance cost in the application of a traditional power transmission line transmission mode in offshore wind power generation. An electric heating device is used for heating a calcium-based thermochemical energy storage material, then energy storage operation is completed, energy storage particles are subjected to waste heat recovery and cooling after the energy storage process is completed, then are stored in a storage tank in a centralized mode and are transported to the land in a shipping mode for secondary power generation, and the particles obtained after energy release are transported to an offshore power generation platform for recycling. The calcium-based thermochemical energy storage material modified by the high-entropy fluorite oxide has high energy density and high cycle stability, so that efficient energy consumption is realized, and the wind and electricity abandoning rate is reduced. The thermal chemical energy storage technology is introduced into an existing offshore wind power system, a new application neighborhood is developed for thermal chemical energy storage, and a new thought is provided for solving the problems of energy consumption and transportation of offshore wind power.

The invention belongs to the field of smelting, and particularly relates to a smelting method for improving cleanliness of austenitic stainless steel. The method comprises the following steps: melting raw materials in an electric furnace, and tapping; carrying out AOD (argon oxygen decarburization) refining; and LF refining. The method comprises the following steps: controlling the contents of C and Si elements and the tapping temperature during tapping of molten raw materials in an electric furnace; the temperature of molten steel obtained through AOD refining is set, FeSi is used for primary reduction, the content of Si is controlled, reduction slag lime and fluorite are added for slagging in secondary reduction, the target requirement for alkalinity of reduction slag is controlled, aluminum particles are added, and the rest is reduced through calcium silicate blocks; in the LF refining process, CaSi powder is adopted for diffusion deoxidation, Al deoxidation is not used, the oxygen target is controlled, the white slag retention time is controlled, the argon feeding stirring time and the soft argon blowing time are controlled, and crane ladle pouring is carried out, so that the inclusion requirement of the current high-end 304 austenitic stainless steel can be met, and the inclusion is reduced to be smaller than or equal to 1.0 grade from the 1.5 grade or 2.0 grade.

The invention discloses a method for measuring the content of calcium fluoride in dolomite-containing fluorite mine. The method comprises an acetic acid solution, a hydrochloric acid solution, a triethanolamine solution, a potassium hydroxide solution and boric acid. The method for measuring the content of calcium fluoride in the dolomite-containing fluorite mine comprises the following steps: S1, reagent proportioning; s2, preparing a calcium standard solution; s3, preparing an EDTA standard titration solution; s4, selecting an instrument; s5, preparing a sample; s6, step analysis; s7, content correction and determination; and S8, calculating a result. The invention belongs to the technical field of calcium fluoride content determination, and particularly relates to a method for measuring the content of calcium fluoride in dolomite-containing fluorite mine, compared with the prior art, the method solves the problem of dolomite dissolution when calcium carbonate is leached by acetic acid, and the content of calcium fluoride in the fluorite mine can be measured by accurately calculating the dissolution amount of dolomite. The measured calcium fluoride content is clearer, more reasonable and more reliable and approaches to a true value, and the process operation is simple and rapid, and is suitable for the requirements in the fields of mine production, assay detection and the like.

The invention discloses a self-excitation stress luminescent material and a preparation method thereof, and belongs to the technical field of luminescent materials. The chemical general formula of the fluorescent powder is Ca1-xF2: x (Eu < 2 + > / Eu < 3 + >), wherein x is more than 0.005 and less than or equal to 0.05; or the chemical general formula is Ca1-y-zF2: yEu < 2 + > / zSm < 3 + >, y is greater than 0 and less than or equal to 0.005, and z is greater than 0 and less than or equal to 0.010. The stress luminescent material is synthesized through a high-temperature solid-phase method, and the adopted preparation method is simple in process, controllable in condition and low in preparation cost; according to the invention, the valence state of doped Eu or the proportion of Eu < 2 + > / Sm < 3 + > ions is controlled by controlling the doping amount of Eu by utilizing the spontaneous reduction characteristic of fluorite-structure fluoride to doped elements, so that the double luminescence centers of the material are realized; the color changing effect of the luminescent material is achieved by changing the stress, and then stress visual detection can be achieved. The luminescent characteristic of the stress luminescent material is enriched, and the potential application of the stress luminescent material in the field of stress visual detection is widened.

The invention provides a flux-cored wire, a manufacturing method of the flux-cored wire, a gas-shielded arc welding method and deposited metal. The flux core of the flux-cored wire comprises the following components in percentage by weight: 27.5 to 29.5 percent of rutile, 1.0 to 2.0 percent of ferrovanadium, 0.2 to 0.3 percent of bismuth oxide, 0.8 to 1.2 percent of cryolite, 12.5 to 15.0 percent of high-carbon ferrochrome, 5.0 to 6.5 percent of electrolytic manganese metal, 4.5 to 6.5 percent of metal nickel, 1.0 to 3.0 percent of feldspar, 1.5 to 2.5 percent of ferromolybdenum, 1.0 to 2.5 percent of aluminum-magnesium alloy, 32.0 to 35.0 percent of micro-carbon ferrochrome, 0.5 to 1.5 percent of ferrotitanium, 1.15 to 2.85 percent of fluorite, 0.8 to 2.0 percent of ferrosilicon and 0.6 to 1.5 percent of lithium carbonate. In the invention, the alloy content of deposited metal and the hardness of the surfacing layer are controlled by adjusting the percentage of the flux core in the total weight, the surfacing layer with excellent corrosion resistance and proper hardness is ensured to be obtained, and the service life of the wrapper roller is prolonged. And meanwhile, by controlling all the components in the flux powder of the flux-cored wire and the proportion, the flux-cored wire has excellent welding process performance.

The invention belongs to the technical field of nano material preparation, and particularly discloses a preparation method of a manganese-cobalt-doped cerium dioxide nanorod, which comprises the following specific steps: 1) dissolving cerium salt, manganese salt and cobalt salt in distilled water to obtain a solution A; 2) dissolving an alkaline precipitator in distilled water to obtain a solution B; 3) dropwise adding the solution A into the solution B under sufficient stirring, and then transferring the mixed solution into a hydrothermal synthesis kettle for sealing; and 4) after the reaction is finished, cooling, washing and drying, and then roasting at high temperature in an air atmosphere to obtain the manganese-cobalt doped cerium dioxide nanorod material. The preparation method comprises the following steps: preparing a precursor of a manganese-cobalt-cerium composite oxide through a one-step hydrothermal synthesis method by modulating the types of a cerium salt, a manganese salt, a cobalt salt and an alkaline precipitator, and then washing, drying and roasting to obtain the manganese-cobalt-doped cerium dioxide nanorod with a regular morphology and a cubic fluorite structure. The method disclosed by the invention is simple in preparation condition, high in operation safety, green and environment-friendly, and convenient for industrial production.

The invention relates to a mineral resource prediction method and system for a shallow-hidden fluorite mine, and the method comprises the steps: carrying out the metallogenic characteristic analysis of a typical fluorite deposit, and constructing a prospecting prediction conceptual model according to an analysis result; performing evaluation analysis on the resource potential, the mineralization favorable degree and the prospecting prediction matching degree of the prospecting area to obtain an optimal mineralization prediction geological unit; on the basis of the prospecting prediction conceptual model, a prospecting prediction quantitative model is obtained in combination with geological information of the typical fluorite deposit, and fluorite mine quantitative prediction is conducted on the optimal metallogenic prediction geological unit through the prospecting prediction quantitative model, so that fluorite mine prediction quantity is obtained; and under the condition that the fluorite mine prediction amount reaches a set threshold value, fluorite mine resource evaluation analysis is carried out according to the fluorite mine prediction amount in combination with the obtained geological exploration data of the ore searching area, and fluorite mine resource distribution data is obtained. From the perspective of green prospecting, the method can quickly and accurately carry out prospecting prediction on shallow hidden or deep fluorite mines.

The invention discloses a radiation cooling exterior wall brick and a preparation process thereof, and relates to the technical field of ceramic bricks. The radiant cooling exterior wall tiles include a body, a base glaze layer, a pattern layer and a protective glaze layer from the inside to the outside. The base glaze layer includes the following components in parts by mass: 40-60 parts of base glaze ceramic base glaze, 15-35 parts of cooling powder, 6-12 parts of calcined talc, 4-8 parts of calcined zinc oxide, 3-6 parts of dolomite, 2-4 parts of fluorite, 3-6 parts of calcined kaolin, 0.2-0.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of sodium tripolyphosphate and 40-55 parts of water; the protective glaze layer includes the following components in parts by mass: 60-70 parts of protective glaze ceramic base glaze, 10-20 parts of cooling powder, 5-10 parts of albite, 3-5 parts of calcined talc, 2-4 parts of calcined zinc oxide, 0.2-0.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of sodium tripolyphosphate and 40-55 parts of water. The present invention adjusts the component ratio of the base glaze layer and the protective glaze layer and simultaneously adds cooling powder for compounding, thereby ensuring the basic performance of the wall tile while improving its reflectivity and emissivity to infrared and visible light.

The invention discloses a technological method for regulating and controlling the melting point and viscosity of aluminum deoxidized steel refining slag based on rare earth cerium, and belongs to the technical field of ferrous metallurgy refining. The redox characteristic of Ce and slag system structure modification are combined, the limitation of traditional single component adjustment is broken through, and the composite oxide effect of Ce is utilized: Ce generates CeO2 and Ce-Al-O composite oxide at high temperature, so that the liquidus temperature of a slag system is remarkably reduced, and the melt structure is optimized; by limiting the addition amount of Ce and balancing the cost and performance, the situation that the oxidability of a slag system is out of control due to excessive Ce is avoided, and the thermodynamic stability of the slag system is improved; the addition of Ce inhibits the generation of high-melting-point calcium aluminate and promotes the formation of a low-melting-point phase; by adding Ce, melting point reduction, viscosity optimization and molten steel purification are achieved at the same time, the additive is superior to an existing single-function additive, traditional fluorite is replaced, and fluorine pollution is reduced. The invention aims to provide the same environment-friendly and efficient method capable of accurately regulating and controlling the physicochemical properties of the slag.

The present invention provides a calcium-based thermochemical heat storage material modified with high-entropy fluorite oxide and a preparation method thereof. The material comprises a calcium-based material and a high-entropy fluorite oxide, with the calcium-based material accounting for 70-85% by mass. The calcium-based material is calcium oxide, and the high-entropy fluorite oxide is a fluorite-structured oxide formed by zirconium, cerium, lanthanum, neodymium, and ytterbium, with a molar ratio of 1:1:1:1:1 for the oxides of zirconium, cerium, lanthanum, neodymium, and ytterbium. The invention utilizes the high-entropy fluorite oxide as an anti-sintering component to disperse calcium oxide and prevent its sintering, while simultaneously promoting the adsorption, dissociation, and migration of CO2 on the surface of the material, thereby enhancing the cycling stability and energy density of the heat storage material.

The invention belongs to the technical field of glass materials, and particularly relates to black high-hardness heat-resistant microcrystalline glass ware and a preparation method thereof. Silicon dioxide, sodium oxide, aluminum oxide, potassium oxide, boric oxide, magnesium oxide, calcium oxide, zinc oxide, sodium fluosilicate, iron oxide, manganese oxide, fluorite, lithium oxide, metal manganese coated with silicon dioxide and schorlite are used as raw materials, and the black high-hardness heat-resistant microcrystalline glass ware is prepared through the processes of high-temperature melting and mixing, compression molding, annealing and tempering. The black high-hardness heat-resistant microcrystalline glass ware is excellent in performance, high in hardness and good in heat resistance, and has potential market value.

The invention provides a fluorite flotation composite inhibitor and a preparation method and application thereof.The composite inhibitor can be used for flotation of phosphorus-containing high-calcium low-grade fluorite mine and comprises, by mass, 1-5 parts of sodium hexametaphosphate, 8-40 parts of sodium humate, 2.8-14 parts of tannin extract, 5-40 parts of water glass and 0.2-1 part of sodium acrylate. The preparation method comprises the following steps: S1, dissolving sodium hexametaphosphate, water glass and sodium acrylate in water to obtain a mixed solution; and S2, adding the tannin extract and the sodium humate into the mixed solution, and uniformly mixing the tannin extract and the sodium humate. The fluorite flotation composite inhibitor is high in selective inhibition performance, small in influence on floatability of fluorite while inhibiting calcite and apatite, better in selective inhibition effect compared with a single traditional inhibitor such as water glass and the like, capable of achieving efficient separation of calcite, apatite and other calcium-containing gangue minerals and fluorite and capable of achieving efficient flotation of fluorite. And high-quality and high-recovery-rate fluorite concentrate is obtained, and the comprehensive benefits of the flotation process are greatly improved.

The invention provides a beneficiation-metallurgy combined comprehensive utilization process for dilute separation tailings, which comprises the following steps: carrying out ore grinding and flotation treatment on the dilute separation tailings to obtain fluorite rough concentrate and flotation tailings; magnetically roasting the mixed reducing agent and the flotation tailings, and magnetically separating to obtain magnetically separated rough concentrate and magnetically separated rough tailings; carrying out fine grinding and magnetic separation on the magnetic separation rough concentrate to obtain a magnetic separation iron concentrate product and magnetic separation concentrate tailings; the magnetic separation coarse tailings and the magnetic separation fine tailings are mixed, and then acid washing liquid and acid washing residues are obtained after acid washing and solid-liquid separation are conducted in sequence; and carrying out pressurized acid leaching, solid-liquid separation and extraction on the pickling residues to obtain scandium oxide and niobium oxide. By adopting the flotation-magnetizing roasting-magnetic separation-acid pickling-pressurized acid leaching combined process, the fluorite coarse ore, the iron ore concentrate, the rare earth leaching solution and the niobium-scandium leaching solution are obtained, the comprehensive utilization rate of the tailings is greatly increased, the discharge amount of the tailings is reduced, the acid consumption of tailings treatment is reduced, the environmental pressure is reduced, and the benefits of enterprises are improved.

The invention relates to a method for forming fluorite from a fluid containing fluoride ions by using bioactive glass and a filter medium containing bioactive glass. A method of forming fluorite from an F-containing aqueous fluid, the method comprising: contacting a bioactive glass comprising calcium with an F-containing aqueous fluid; and forming fluorite. A filter medium for forming fluorite from an F-containing aqueous fluid and a filter comprising the filter medium, the filter medium comprising: a bioactive glass comprising calcium; and at least one of sand, gravel, charcoal, polymer particles, and ceramic particles.

The invention discloses low-boron refining slag which comprises the following raw materials in parts by weight: 45-65 parts of calcium oxide, 11-16 parts of fluorite powder, 2-10 parts of a fluxing agent, 1-3 parts of silicon dioxide and 4-12 parts of an accelerant. The refining slag comprises the following chemical components: 45 to 60 percent of CaO, 10 to 15 percent of CaF2, 5 to 15 percent of Al2O3, 2 to 5 percent of SiO2, 5 to 9 percent of MgO, 3 to 12 percent of Ce2O3 and the balance of unavoidable impurities. Due to the adoption of the technical scheme, compared with the prior art, the refining slag has the advantages of low melting point, good fluidity, capability of well adsorbing inclusions, reduction of the boron content of steel, reduction of smelting energy consumption, low cost and the like.