99 results about "Calcite" patented technology

The invention discloses a matte glaze and a preparation method thereof. The matte glaze comprises the following components by weight: 1-5 parts of zinc oxide, 5-15 parts of barium carbonate, 0-15 parts of zirconium silicate, 10-25 parts of potassium feldspar, 10-20 parts of kaolin, 5-15 parts of calcite, 5-15 parts of calcined talcum powder, 20-35 parts of a matte frit and 0.5-1 part of an additive. Specifically, the matte frit comprises the following components by weight: 30-50 parts of SiO2, 15-20 parts of Al2O3, 0.01-0.5 part of Fe2O3, 3-10 parts of CaO, 0.5-5 parts of MgO, 1-5 parts of K2O, 3-10 parts of Na2O, 3-10 parts of ZnO, 0.1-1 part of B2O3 and 10-25 parts of BaO. By introducing the matte frit, the melting temperature of the formula is lowered, the firing range of the formula isbroadened, and the glaze texture achieves a fine matte effect.

The invention relates to the technical field of glazes, and particularly discloses an antifouling glaze with a snow velvet effect and a preparation method thereof. The glaze comprises the following raw materials in parts by weight: 35-45 parts of quartz stone, 4-6 parts of zinc oxide, 7-8 parts of strontium carbonate, 4-5 parts of barium carbonate, 7-9 parts of calcite, 8-10 parts of talc, 5-8 parts of kaolin, 0.01-0.1 part of titanium dioxide and 1-5 parts of a microcapsule repairing agent. According to the glaze, a large number of fine willemite crystals can be separated out, so that a flickering crystal flower effect is generated, and a glass phase between the crystals is very compact, so that the unification of a visual effect and an antifouling function is realized. Even if the surface is scrubbed to generate scratches, the surface can be recovered through self-repairing, so that the antifouling effect is further improved.

The invention belongs to the technical field of calcium carbonate synthesis, and particularly relates to a preparation method and application of vaterite type calcium carbonate. The preparation method of vaterite type calcium carbonate comprises the following steps: (1) mixing a calcium-containing raw material, an ammonia source and a surfactant, and reacting to obtain a calcium ion leachate; (2) introducing gas containing carbon dioxide into the calcium ion leachate, reacting and separating to obtain vaterite type calcium carbonate and filtrate; in the step (1), the pH value of the mixed system is 8-12; in the step (2), the pH value of the reaction is 8-12. The pH value of the reaction system is controlled to be 8-12, so that the reaction system can form an NH3 / NH4 < + > system, the vaterite crystal surface energy is adsorbed and reduced, conversion to calcite is inhibited, and the purity and low-temperature stability of vaterite type calcium carbonate are improved. In addition, the filtrate obtained by the method can be used as an ammonia source to return to the step (1) for recycling.

The invention belongs to the technical field of ceramic production, and particularly relates to high-quality copper red glaze, copper red glaze porcelain and a preparation method thereof. The copper red glaze is prepared from feldspar, quartz, wollastonite, copper oxide, calcite, malachite, talcum powder, Sanbao mud and glaze stone. According to the invention, the raw ore is taken as the main raw material, the raw ore has the advantages of low cost and environmental protection, in addition, the unique internal structure and components of the raw ore can endow porcelain with excellent color and luster, so that the surface of the copper red glaze is smoother, the color is more gorgeous, and the copper red glaze is more layered. Meanwhile, by strictly controlling the conditions and parameters of the preparation process, the cracking rate and defects of the glaze surface can be greatly reduced, and the quality of the copper red glaze is higher.

USE OF A MARL FOR THE PREPARATION OF A POZZOLANIC MATERIAL The present invention relates to the use of a marl comprising: more than 45% calcite; and at least 1% kaolinite; for the preparation of a pozzolanic material.

The application provides a method for judging ancient marine water body environment. The method comprises the following steps: obtaining a target shale reservoir core sample in a work area; wherein the target shale reservoir is radiolarian siliceous shale lamina; determining the composition of the shell cavity filling and the filling amount of calcite in the shell cavity in the target shale reservoir based on the target shale reservoir core sample; and determining the ancient marine water body environment during the deposition period of the target shale reservoir in the work area according to the composition of the shell cavity filling and the filling amount of calcite in the shell cavity in the target shale reservoir. The method for judging ancient marine water body environment can effectively combine the oxidation-reduction state of the ancient marine deep water body and the precipitation and dissolution conditions of calcite, so as to better promote the reconstruction of the ancient marine environment.

This invention belongs to the field of mineral processing technology, specifically relating to a selective sulfidation roasting-flotation separation method for a smithsonite-calcite mixed ore. The method first involves crushing and grinding the smithsonite, calcite, and sulfiding agent, then mixing them in a certain proportion and subjecting them to sulfidation roasting, preferentially causing the smithsonite to undergo sulfidation. After cooling the roasted product in an inert atmosphere, flotation separation is performed using xanthate as a collector to obtain zinc concentrate. By controlling the atmospheric conditions during the sulfidation roasting process, the sulfidation reaction efficiency of the smithsonite can be improved, and the generation of sulfur oxide gases during roasting can be reduced. When using this method to process the smithsonite-calcite mixed ore, effective recovery of the smithsonite can be achieved, with a flotation recovery rate exceeding 88%. This invention features a simple process flow and easily controllable operating conditions, providing a new technical approach for the efficient utilization of smithsonite resources.

The present application belongs to the technical field of petroleum geological exploration and analysis, and particularly relates to a single-period oil inclusion composition analysis method based on crude oil inclusions. The present application combines fluorescence microscopic observation and quantitative fluorescence analysis methods, can accurately determine the diameter of oil inclusions, determine the appropriate grinding mesh, and identify the period of oil inclusions in the microscopic observation stage, and provides clear basis for the subsequent experimental process. The analysis of the present application covers the differential processing method of oil inclusions in calcite and quartz minerals, can efficiently and completely perform group composition pretreatment on oil inclusion-containing particles, is convenient to operate, has good reproducibility, and provides reliable technical support for revealing the oil and gas charging history and restoring the reservoir forming process. The present application adopts a crushing device equipped with a low-cost, large-capacity closed zirconium oxide grinding tank, realizes synchronous crushing of multiple samples on the basis of optimizing experimental equipment, and significantly improves the sample processing flux and experimental efficiency.

This invention discloses a black-based blue-spotted glaze with an earthworm-like pattern and its preparation method. The glaze consists of a body, a black base glaze, and a blue-spotted glaze from the inside out. The raw materials for the black base glaze are: feldspar, calcite, calcium borate, dolomite, talc, barium carbonate, quartz, bentonite, zirconium silicate, rutile, cobalt oxide, manganese oxide, and iron oxide. The raw materials for the blue-spotted glaze are: feldspar, limestone, alumina, talc, barium sulfate, Datong clay, zinc oxide, quartz, and titanium dioxide. The preparation method includes: 1. Wet ball milling the black base glaze raw materials to obtain a black base glaze slurry; 2. Wet ball milling the blue-spotted glaze raw materials to obtain a blue-spotted glaze slurry; 3. Bisque firing the body; 4. Applying the black base glaze slurry to the body and drying it; 5. Applying the blue-spotted glaze slurry to the body and drying it; 6. Oxidation firing and reduction firing of the body, followed by natural cooling to obtain the black-based blue-spotted glaze. The raw material formula of this invention is reasonable and environmentally friendly, which can improve the mechanical properties of the glaze; the preparation method is simple and the yield is high.

A method of carbon mineralization includes exposing a solution including a plurality of metal salts and a surfactant to carbon dioxide at a pressure in a range from 300 to 700 pounds per square inch (PSI) to form a carbonated solution. The method further includes adding a base to the carbonated solution until the pH is above 10 to form a reaction mixture and reacting the reaction mixture to form mineral precipitates. The carbon dioxide reacts with the metal salts to form the mineral precipitates. The surfactant includes a tertiary amine including one alkyl group and two ethoxylate groups including two or more ethoxy units. The mineral precipitates include calcite, portlandite, brucite and halite. The mineral precipitates are in the form of particles having an average size in a range from 1 to 75 μm.

This invention belongs to the field of refractory materials for coke ovens in the coking industry, specifically relating to a refractory coke oven lining repair material and its preparation and application method. This application uses high-alumina bauxite, calcium hexaaluminate, calcite, biotite, wollastonite, and pyrophyllite as main materials, BaO as additives, and borosilicate glass powder and calcium phosphate as binders. Because the main materials of this repair material include high-alumina bauxite and calcium hexaaluminate, it has a high degree of compatibility with the original castable refractory, resulting in strong bonding. A single repair can extend the service life by more than one year, and it can be repeatedly repaired, thereby greatly improving the overall service life of the coke oven lining, reducing coke oven costs, and eliminating resource waste. This repair material can directly repair damaged parts of the coke oven without treating the lining, meeting the coke oven's usage conditions and enabling the reuse of the lining. Furthermore, the repair material's preparation method is simple, has a short construction cycle, and is easy to industrialize.

An early strength enhancer for hydraulic compositions contains calcite with a crystallite size in the (104) plane calculated by the Scherrer equation of 30 nm or less and improves the strength of hardened products of hydraulic compositions after, for example, 5 to 20 hours from preparation. A hydraulic composition contains the calcite, a hydraulic powder, and water. A method for producing the hydraulic composition includes a step of mixing the calcite, the hydraulic powder, and water.

This application provides a method for separating low-grade apatite from calcite in the beneficiation process, belonging to the field of heavy metal purification in industrial wastewater. The method involves first subjecting the low-grade phosphate rock to magnetic separation to remove iron, reducing the interference of this gangue on subsequent processes; then performing centrifugal pre-enrichment to remove most of the calcite and other argillaceous gangue, further reducing the interference of this gangue on the subsequent apatite flotation; finally, the obtained centrifuged rough concentrate is subjected to flotation separation, and by adding appropriate amounts of a specially formulated inhibitor CD-P and collector CK to enhance the inhibition of calcite and the collecting effect of apatite, respectively, the effective separation of calcite and apatite is achieved, ultimately realizing the goal of efficient recovery of phosphate concentrate.

The invention provides a method for preparing calcite type micron calcium carbonate by using carbide slag, which comprises the following steps: pretreating carbide slag to obtain dry carbide slag powder, calcining the dry carbide slag powder to obtain calcium oxide powder, dissolving the calcium oxide powder by using an ammonium chloride solution, filtering to remove precipitate, adding a carbonizer and a modifier, and uniformly mixing to obtain calcium carbonate slurry; and stirring and drying to obtain the calcite type micron calcium carbonate. The method has the advantages that the raw material cost is low, the preparation process is simple to operate and the like, and the calcite type micron calcium carbonate prepared by the method has the advantages of good thermal stability, high purity, high additional value and the like.

The invention belongs to the technical field of laser cladding surface modification, and provides a biomineralization liquid for a laser cladding layer as well as a preparation method and application of the biomineralization liquid. The biological mineralization liquid is prepared from the following components in parts by mass: 15 to 25 parts of bacterial liquid, 8 to 12 parts of mineralization precursor, 0.5 to 1.5 parts of dispersing agent, 0.3 to 0.8 part of stabilizing agent and 60 to 76 parts of sterile seawater. By optimizing the component proportion and the preparation process of the biomineralization liquid, a calcium magnesium carbonate mineralization film with a compact calcite structure is formed on the surface of a 30CrNi2MoV steel laser cladding layer, and multiple outstanding beneficial effects are achieved.

The invention belongs to the field of petroleum geological exploration, particularly relates to a method for determining the reservoir forming time of a deep concave area of a continental facies fault lake basin, and aims to solve the problems that the reservoir forming time of the deep concave area of the continental facies fault lake basin can only be obtained in a semi-quantitative manner and the reservoir forming time of the deep concave area of the continental facies fault lake basin is easily misjudged in the prior art. The method comprises the following steps: determining an oil-containing well section, selecting sandstone with developed calcite cement as a sample, and making the sandstone into slices; determining the type of a fluid inclusion, and further determining the type of an oil inclusion; obtaining the rare earth element partition mode similarity of the slices, and confirming the cementation period of the slices; selecting slices which contain the native inclusion and are in the same cementation period, and making the slices into a circular target sample; and performing U and Pb element scanning on the circular target sample, and performing U-Pb age calculation through a graphical method to obtain the reservoir forming age of the deep concave area of the continental disruption lake basin. According to the method, quantitative analysis of the reservoir forming time of the deep concave area of the continental fault lake basin is realized, and the correctness of reservoir forming time judgment is improved.

The invention relates to a utilization method of low-grade easily dissolvable stone type niobium concentrate, and belongs to the field of mineral processing and hydrometallurgy. The method solves at least one of the problems of low recovery rate of Fe and Nb elements, complex process flow, high energy consumption and cost, harsh reaction conditions, high environmental pollution risk and the like in the utilization of the low-grade easily dissolvable stone type niobium concentrate in the prior art. The invention relates to a utilization method of low-grade easily dissolvable stone type niobium concentrate, which comprises the following steps: uniformly mixing niobium concentrate with a reducing agent, pelletizing, and reducing and roasting to obtain roasted ore; the roasted ore is smashed and then subjected to magnetic separation, and iron ore concentrate and tailings are obtained; acidizing and roasting to obtain re-roasted ore; circulating grass leaching to obtain grass leaching liquid and grass leaching residues; the grass extract is subjected to extraction and back extraction through extraction resin, and niobium-containing back extraction liquid is obtained. According to the method, the leaching rate of niobium and the recovery rate of the iron element are increased, the technological process is simplified, the energy consumption and the production cost are reduced, and green and environment-friendly production is achieved.

The present application relates to the technical field of geological modeling, in particular to a deep stratum petrophysical modeling method under complex lithology background, comprising the following steps: well logging data preprocessing, mineral model optimization processing, petrophysical modeling and shear wave prediction, and verification of the accuracy of the petrophysical model in predicting shear wave. The present application adopts four mineral models of quartz-clay model, calcite-clay model, coal and bauxite, respectively, and performs optimal multi-mineral model processing in stratigraphic sections, so as to obtain the petrophysical modeling of deep coal measure stratum complex lithology combination and pore structure under shear wave prediction, and improve the accuracy of shear wave prediction.

The invention discloses a metal organic framework (MOFs)-based glaze, a ceramic product and a preparation method of the ceramic product, and belongs to the technical field of ceramic materials. The provided metal organic framework-based glaze comprises a metal organic framework material and a basic glaze, and the basic glaze comprises the following components: white feldspar, quartz, calcite, wollastonite, copper ore, talc, bovine bone and tin oxide. According to the metal organic framework-based glaze disclosed by the invention, the MOFs are used as a core function regulation and control unit and matched with the white feldspar, the quartz, the calcite, the wollastonite, the copper ore, the tin oxide, the talc and the bovine bone to form a mineral composite system with a specific weight percentage; an integrated technical system of function regulation and control, structure forming and performance optimization is constructed through a stepped preparation process of precise raw material proportioning, high-energy ball milling pulping, multi-dimensional uniform glazing and controlled atmosphere glaze firing; the problems that a current ceramic glaze system is single in component regulation dimension, uncontrollable in transmutation effect, weak in glaze blank interface bonding and the like can be solved.

This invention discloses a method for the comprehensive utilization of sulfide tailings, relating to the field of sulfide tailings treatment technology. This method uses lead-zinc tailings as raw material and innovatively employs a combined "two-stage acid leaching-gravity separation-flotation" process. First, two stages of acid leaching selectively leach calcite associated with barite in the tailings, reducing the influence of muddy calcite while activating pyrite. Subsequently, the acid leaching residue undergoes gravity separation to further separate undissolved calcite, quartz, and other silica-containing gangue minerals. The gravity concentrate is then subjected to flotation to achieve the separation of barite and pyrite, ultimately obtaining high-purity barite and pyrite products respectively. This invention features a reasonable process route and simple operation, effectively solving the separation problem of fine-grained, high-viscosity lead-zinc tailings, achieving full-component purification and utilization of lead-zinc tailings, significantly enhancing the economic value of tailings resources, and reducing the environmental pressure caused by tailings stockpiling, thus demonstrating good economic, environmental, and social benefits.

The application provides a method for fluorite flotation containing calcite, and belongs to the technical field of mineral flotation, and comprises the following steps: after grinding the fluorite crude ore containing calcite, the fluorite crude ore is mixed with water to obtain a first ore slurry; a hydroxyl carboxylic acid chelating agent is added to the first ore slurry to obtain a second ore slurry; an inhibitor is added to the second ore slurry to obtain a third ore slurry; a collector is added to the third ore slurry to obtain a fourth ore slurry; a frother is added to the fourth ore slurry for flotation to obtain fluorite concentrate. Based on the strong calcium ion chelation reaction, the hydroxyl carboxylic acid chelating agent and the calcium ions on the surface of calcite selectively form stable complexes, which not only enhances the hydrophilicity of the surface of calcite, but also generates a chemical bond with extremely high strength, so as to replace the fluorite precipitate on the surface of calcite, and achieve the purpose of cleaning the surface of calcite and eliminating the phenomenon of homogenous transformation.

The invention discloses a low-shading high-contrast reddish brown colored drawing porcelain glaze and a preparation method thereof, and belongs to the technical field of inorganic non-metallic materials. The porcelain glaze comprises the following components in percentage by mass: 20%-30% of quartz, 20%-35% of feldspar, 8%-15% of calcite, 15%-25% of kaolin, 15%-25% of pre-sintered iron-rich clay, 0.5%-1.0% of sodium carboxymethyl cellulose and 0.2%-0.5% of sodium tripolyphosphate. Wherein the pre-sintered iron-rich clay is prepared by pre-sintering natural iron-rich clay at 700-900 DEG C, and the content of Fe2O3 is 5%-8%. The preparation method comprises the following steps: pre-sintering the iron-rich clay, mixing the pre-sintered iron-rich clay with other glaze raw materials, carrying out ball milling to obtain glaze slip, applying the glaze slip to a glaze blank, preheating, and carrying out heat preservation sintering in an oxidizing atmosphere of 1180-1220 DEG C. The iron element crystal form is stabilized through pre-sintering treatment, a specific glaze formula and an optimized sintering system are combined, anorthite microcrystals which are decomposed and promoted by calcite are used for wrapping alpha-Fe2O3 colored particles, iron ion migration is effectively inhibited, the technical problems that traditional reddish brown colored drawing patterns are blurred, and boundaries are blurred are solved, and the service life of the reddish brown colored drawing is prolonged. And the high-quality colored drawing porcelain with bright and saturated color, high contrast ratio and clear pattern is obtained.

The invention discloses a plugging composition for plugging an oil field water flow dominant channel. The plugging composition contains ultrafine powder, a thickening regulator and a filtration regulator, wherein the ultrafine powder is prepared from 40.5 to 69.2 parts of hexagonal calcium silicate, 11.5 to 28.6 parts of calcite, 5.8 to 14.7 parts of clay mineral, 5.2 to 14.6 parts of quartz, 0 to 0.9 part of potassium feldspar, 0 to 2.6 parts of plagioclase, 0 to 0.6 part of dolomite, 0 to 2.1 parts of hornblende, 0 to 0.4 part of gypsum and 0 to 3.8 parts of anhydrite; the thickening regulator is sodium lignin sulfonate, hydroxymethyl cellulose and / or boric acid; the filtration property regulator is a terpolymer of 2-acrylamido-2-methylpropanesulfonic acid / acrylamide / hydroxy carboxylic acid, barium sulfate and / or 1788 type polyvinyl alcohol; the mass ratio of the thickening regulator to the ultrafine powder is (0.05-4): 100; the mass ratio of the filtration modifier to the ultrafine powder is (0.5-5): 100. The invention also discloses a preparation method and application thereof. The plugging composition provided by the invention can be matched with water flow dominant channels of reservoirs with different permeability.

The present application belongs to the technical field of mineral processing. The present application provides a flotation reagent for inhibiting calcite in fluorite-barite intergrowth ore, which comprises a collector and an inhibitor; the collector comprises at least one of sodium oleate and oxidized paraffin soap; the inhibitor comprises 5-mononitrate isosorbide and water glass in a weight ratio of 4-5:1. The present application also provides a corresponding flotation method, which comprises the steps of: preparing fluorite-barite intergrowth ore containing calcite into ore slurry, and then adding the collector and the inhibitor described in claim 1 or 2 to the obtained ore slurry for flotation. The present application can effectively inhibit calcite during the flotation of fluorite-barite intergrowth ore and improve the fluorite recovery rate, and the obtained CaF2 recovery rate is as high as 95% or more; the flotation reagent used in the present application has a small amount of use and low flotation cost.

The application provides a high calcite type fluorite ore dressing method, and belongs to the field of ore flotation. The high calcite type fluorite ore is added with a special high selectivity fluorite collector CK-1 and calcite inhibitor CD-8, and is combined with soda ash, acidified water glass reagent and roughing-scavenging-cleaning process, so that the current situation that the fluorite recovery rate and grade are in a low range due to the difficulty in separation of fluorite and calcite with similar properties in the flotation process is solved. The special collector CK-1 is chemically adsorbed on the surface of Ca ions, and the collector can significantly reduce the adsorption amount on the surface of calcite. The inhibitor CD-8 is chemically adsorbed on the surface of calcite, and a hydrophilic film is formed on the surface of calcite to hinder the adsorption of hydrophobic collectors, so that the inhibition of calcite is realized. The synergistic effect of the combined reagent strengthens the selective inhibition ability of the high calcite type fluorite ore.

The invention provides a method for judging whether siliceous shale is subjected to still water physical and chemical deposition or not. The method comprises the following steps: determining whether target siliceous shale has a feature 1, a feature 2, a feature 3 and a feature 4 or not, and if so, determining that the target siliceous shale is still water physical and chemical deposition; the method is characterized in that 1, biological siliceous accounts for 70-95% of the total volume of quartz and terrestrial feldspar in the rock, and the total volume of terrestrial quartz and terrestrial feldspar accounts for 5-30% of the total volume of quartz and terrestrial feldspar in the rock; 2, calcite and dolomite are contained; 3, common berry-shaped pyrite is contained, and the common berry-shaped pyrite is berry-shaped pyrite with intergranular pores filled with organic matters; and 4, an organic clay particle complex with honeycomb-shaped nano pores is contained. Whether the siliceous shale is subjected to still water physical and chemical deposition or not is judged, determination of the shale gas dessert area of the siliceous shale is promoted, and therefore efficient exploration and development of the shale gas of the siliceous shale are achieved.

The invention discloses sporosarcina pale yellow J4 and application thereof, and belongs to the technical field of microorganisms. The preservation number of the bacterial strain is GDMCC No.67388, and the bacterial strain is characterized in that firstly, the bacterial strain has high urease activity, but growth does not depend on urea, and the bacterial strain can be efficiently cultured in a conventional culture medium at low cost; and secondly, the strain can quickly promote stable calcite crystal form formation in a calcium carbonate precipitation induction process, and the relative content of calcite in a product mineralized for 4 hours is obviously higher than that of a common contrast strain, so that the long-term stability of a mineralized product is greatly improved. The invention also provides a microbial preparation containing the strain, a method for applying the strain to wind prevention, sand fixation and the like, and a method for improving the stability of an MICP product by using the strain. The strain is excellent in comprehensive performance and has a wide industrial application prospect in the fields of desertification control, geotechnical engineering reinforcement and the like.

The invention relates to the technical field of geological modeling, in particular to a deep stratum rock physical modeling method under a complex lithologic background, which comprises the following steps of logging data preprocessing, mineral model optimization processing, rock physical modeling and transverse wave prediction, and rock physical model prediction transverse wave accuracy verification. According to the method, the four mineral models, namely the quartz-clay model, the calcite-clay model, the coal model and the bauxite model are adopted respectively, and optimized multi-mineral model processing is carried out in a layered manner, so that rock physical modeling for realizing complex lithologic combination of the deep coal measure strata and transverse wave prediction under a pore structure is obtained, and the accuracy of transverse wave prediction is improved.

The invention discloses a high-calcium fluorite ore beneficiation and enrichment method, and provides a'dense medium tailings pre-discarding-combined inhibition-efficient collector 'synergistic process aiming at the problems that fluorite and calcium-containing gangue in the high-calcium fluorite ore are difficult to separate and the recovery rate is low, and the method specifically comprises the following steps: firstly, crushing and screening raw ore, and then carrying out tailings pre-discarding through a dense medium cyclone to remove 30-35% of high-calcium tailings; after the dense medium concentrate and the fine-fraction material are combined and ground, a combined inhibitor and a collecting agent are adopted for conducting one-roughing, one-sweeping and six-concentration flotation in a weak alkaline environment, and the combined inhibitor is added in stages in the concentration stage so as to strengthen calcite inhibition. According to the method, the high-calcium ore separation bottleneck is remarkably broken through, the concentrate CaF2 grade is larger than or equal to 98.2%, the calcite residue is smaller than or equal to 0.20%, the recovery rate is larger than 85%, the using amount of the collecting agent is reduced by 40% compared with a traditional sodium oleate system, the comprehensive cost is reduced by 25%, and the method is particularly suitable for resource utilization of refractory fluorite ore with the CaCO3 content being 40-65%.

The application provides a method for judging whether siliceous shale is hydrochemical deposition. The method comprises the following steps: determining whether the target siliceous shale has characteristics 1, 2, 3 and 4, and if yes, the target siliceous shale is hydrochemical deposition; characteristic 1: biogenic silica accounts for 70-95% of the total volume of quartz and terrigenous feldspar in the rock, and terrigenous quartz and terrigenous feldspar account for 5-30% of the total volume of quartz and terrigenous feldspar in the rock; characteristic 2: containing calcite and dolomite; characteristic 3: containing ordinary framboidal pyrite, and the ordinary framboidal pyrite refers to framboidal pyrite with intercrystalline pore organic matter; characteristic 4: containing organic clay complex with honeycomb nanopores. Judging whether siliceous shale is hydrochemical deposition helps to determine the shale gas sweet spot of siliceous shale, so as to realize efficient exploration and development of shale gas of siliceous shale.