157 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 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 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 provides a deep coalbed methane reservoir pore parameter prediction method based on geologic feature constraint, and relates to the technical field of coalbed methane reservoir development, and the method comprises the steps: building a deep coalbed methane reservoir rock physical model of which a crack is filled with calcite by using a DEM model based on the calcite content of the filled crack and calcite elastic parameters; elastic parameters of the deep coal bed gas reservoir rock physical model are obtained; based on the elastic parameters of the rock physical model of the deep coalbed methane reservoir, simulating and generating a seismic record of the target coalbed methane reservoir by using a response relationship between seismic wave propagation and the elastic parameters of the rock physical model of the deep coalbed methane reservoir; and based on the simulated seismic record, the actual seismic record and the prior data of the pore parameters, performing Bayesian iteration inversion by using a pre-constructed inversion objective function to obtain a prediction result of the pore parameters corresponding to the target coalbed methane reservoir. The prediction accuracy of the pore parameters is improved.

The invention discloses a coal underground efficient gasification method based on calcium-based catalyst injection and a carbon dioxide geological storage method. The calcium-based powder material adopts high-purity limestone, wherein the content of calcium oxide is greater than 50%. The method comprises the following steps: crushing a limestone raw material into micron-scale to nano-scale powder, putting the powder into a stirring device, mixing the powder with a coal underground gasification injection agent to obtain a suspension fluid, and injecting the suspension fluid into a coal underground gasification furnace which is in production; calcite minerals in limestone are decomposed into calcium oxide under the coal underground gasification high-temperature effect, and the calcium oxide adsorbs water and carbon dioxide to the surface of coal coke to generate a synergistic gasification reaction at the same time. Wherein the injectant and the calcium-based powder suspension fluid are prepared by adopting a foam suspension device provided with an ultrasonic generator, so that the suspension stability of the calcium-based powder in the suspension fluid is improved. According to the invention, the calcium-based material is injected into the coal underground gasification furnace as the catalyst, so that the moisture, carbon dioxide and carbon in the coal are subjected to co-gasification reaction, the coal underground gasification reaction rate and gasification efficiency can be obviously improved, the environmental pollution is reduced, and the maximum utilization of resources is realized.

The invention discloses a jade-color luxury-effect ceramic rock plate and a preparation method thereof. The ceramic rock plate sequentially comprises a green body, a transparent cover glaze layer, a jade texture pattern layer, a composite dry particle layer, a first protective glaze layer, a transparent dry particle layer and a second protective glaze layer from bottom to top, the composite dry particle layer is prepared from the following raw material components in parts by weight: 65-69 parts of baddeleyite, 5-7 parts of lepidolite, 10-15 parts of opal, 3-5 parts of kyanite and 1-5 parts of udravite; the anti-reflection dry granules are prepared from the following raw material components in parts by weight: 20 to 25 parts of albite, 25 to 30 parts of quartz, 14 to 16 parts of calcite, 8 to 12 parts of wollastonite and 13.5 to 15.5 parts of zinc oxide. The ceramic rock plate can truly restore the randomness, the layering sense and the multicolor interweaving effect of jade seeping, the mild texture and the natural gloss of the surface of a product are improved, and the luxury effect of jade seeping is achieved.

The present invention provides a dolomite standard sample development method calibrated by an age method, a dolomite standard sample and the use thereof. The development method comprises: providing a candidate of a dolomite standard sample; providing a calcite standard sample, a zircon standard sample and a garnet standard sample which have been subjected to verification of matrix effects; taking the calcite standard sample as a main standard sample, and the zircon standard sample and the garnet standard sample as secondary standard samples, measuring the age of the candidate of the dolomite standard sample twice, and marking the test results as A and B; and when A and B satisfy (A-B) / B×100≤3, using the candidate of the dolomite standard sample as a dolomite standard sample.

The present invention discloses the system and method of preparation of a surface-modified crystalline blend to enhance the properties of water by optimizing its mineral composition, alkalinity, and bioavailability. The crystalline blend comprises Tourmaline, Shungite, Jade, Silica, Zeolite, Lava Stones, and Calcareous Shale, with additional minerals like Maifan, Calcite, and Dolomite to enhance water quality. The invention utilizes Bioactive Crystal Resonance Technology (BCRT), wherein individual minerals are heated below their phase transition temperature to activate them while maintaining their crystalline state providing controlled activation and ensuring a regulated release of beneficial minerals, preventing excessive increases in pH or TDS levels while significantly reducing heavy metal leaching. The system includes a perforated membrane leveraging irregularly shaped crystals ranging from 0.5 to 5mm, allowing water to interact with the modified minerals to restore essential nutrients, increase hydration efficiency, improve detoxification, alkaline water, and provide antioxidant benefits.

The invention relates to a method for identifying hydrothermal calcite in shale. The method comprises the following steps: preparing sample slices from calcite samples at the same layer and in different occurrence states; carrying out cathodoluminescence observation on the sample slice to obtain a cathodoluminescence picture; determining rare earth element data of each sample slice by utilizing an element geochemical analysis method; determining a forming mode of a sample slice according to the cathode luminescence photograph and the rare earth element data; wherein the formation mode comprises a later diagenesis mode and a hydrothermal deposition calcite mode.

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 sandy soil modifying agents, and particularly relates to a sandy soil modifying agent and a sandy soil modifying method. The sandy soil improver comprises a functional bacterium suspension and a cementing liquid, the functional bacteria in the functional bacteria turbid liquid can perform biomimetic mineralization on calcium salt in the cementing liquid to generate inorganic cement calcium carbonate (the crystal form is calcite and / or vaterite), and the inorganic cement is a cementing component widely distributed in natural soil and can maintain high cementing strength and a stable structure of the sandy soil, so that the sand stabilization effect is realized. Secondly, the formed inorganic cement is consolidated on the surface layer of the sandy soil in the form of a crust layer, the main component of the crust layer is calcium carbonate, and the calcium carbonate is white or yellowish white and light in color and can significantly reduce the solar radiation effect, so that the earth surface soil temperature rise speed of the sandy soil is slowed down, the water evaporation is slowed down, the water retention is enhanced, and the drying and hardening of the surface crust layer are slowed down; and germination and growth of plant seeds are facilitated.

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 present invention provides a high-spatial-resolution calcite U-Pb dating method, which adopts a mixed receiver mode, that is, a Faraday cup is used to receive U and Th, and an ion counter is used to receive Pb for calcite U-Pb dating. By optimizing the cone set and using nitrogen as the auxiliary gas to enhance the sensitivity of the instrument, accurate dating of calcite U-Pb with a high spatial resolution (≤60 μm) is achieved. Samples with a U content as low as 0.03 μg g-1 can be directly measured without switching the detector mode. At the same time, a mode of screening while dotting is adopted to improve the success rate of dating. The screening conditions for samples are 207Pb / 206Pb < 0.6 and 238U / 206Pb > 1.0. The present invention realizes the U-Pb dating technology for high-spatial-resolution calcite, overcoming the disadvantages of poor spatial resolution and low dating success rate in the prior art.

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 provides a microscopic identification method for hydrothermal cause calcite, and the method comprises the steps: judging the calcite according to the optical characteristics of the calcite, and judging the hydrothermal cause calcite according to the characteristics of triangular cleavage, triangular holes and triangular crystals; and carrying out identification and elemental analysis on the identified cathodoluminescence characteristics of the hydrothermal cause calcite, and further identifying the hydrothermal cause calcite. According to the method, the bright crystal calcite existing in the carbonate reservoir is directly subjected to crystal optical judgment, whether the calcite is a hydrothermal cause or not is quickly and conveniently judged through the unique cleavage and optical characteristics of the hydrothermal calcite under a polarizing microscope, and the hydrothermal transformation effect of the reservoir rock is judged.

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.

The invention discloses an iron ore pre-oxidation roasting in-situ sulfur fixation device and method, and belongs to the technical field of mineral processing. According to the iron ore pre-oxidation roasting in-situ sulfur fixation device, a pre-oxidation roasting technology is introduced before reduction roasting, pyrite and pyrrhotite in high-sulfur iron ore react with calcite and dolomite, SO2 is converted into stable solid sulfide in the oxidizing atmosphere, and therefore generation of SO2 is effectively inhibited in the roasting process, and the sulfur fixation effect is improved. In-situ sulfur fixation is realized, environmental pollution is reduced, and additional introduction of a sulfur-fixing agent is not needed. By means of the method, the sulfur fixation rate is larger than or equal to 80%, the iron grade of iron ore concentrate in roasted products is 60%-70%, and the iron recovery rate reaches 60%-85%.