148 results about "Carbonate minerals" patented technology

The invention relates to a method and equipment for preparing a deacidification agent from household garbage incineration fly ash, and the method comprises the following steps: primary conversion: converting various minerals in the household garbage incineration fly ash into metal carbonate minerals; secondary conversion: converting the obtained metal carbonate minerals into corresponding metal oxides to obtain a high-alkalinity deacidification agent; and optionally, performing three-stage conversion before deacidification application, and hydrating the metal oxide to obtain a deacidification agent with high activity; wherein the household garbage incineration fly ash is generated by performing deacidification treatment on household garbage incineration flue gas; the primary conversion is carried out in an aqueous solution, and a conversion reagent contains water-soluble carbonate and / or water-soluble bicarbonate; the secondary conversion is carried out at a temperature of more than 700 DEG C. According to the method, harmlessness, reduction and recycling of the household garbage incineration fly ash are achieved, environmental release and ecological burden of toxic and harmful substances are prevented, and the technical economic feasibility is good.

The invention provides a method for dechlorinating waste incineration fly ash and mineralizing carbon dioxide. The method provided by the invention comprises the following steps: S1, mixing the waste incineration fly ash with water, and carrying out first water washing treatment to obtain first water-washed fly ash; and S2, under the condition that gas containing carbon dioxide is introduced, mixing the first water washing fly ash obtained in the step S1 with water, and carrying out second water washing synergistic carbonization treatment to obtain a dechlorinated carbonization product. According to the method, the waste incineration fly ash serves as a mineralization material, CO2 in the industrial flue gas is absorbed and converted into stable carbonate minerals, meanwhile, deep removal of chlorine salt is achieved, and a new technical direction is provided for recycling of the waste incineration fly ash and carbon reduction of the industrial flue gas.

The invention relates to the technical field of carbon sequestration and hydrogen production, and discloses a carbon sequestration and hydrogen production method and a carbon sequestration and hydrogen production device combined with new energy surplus electric power, and the carbon sequestration and hydrogen production method combined with new energy surplus electric power comprises the following steps: regulating and controlling the temperature and pressure of a geological reaction ore bed; carrying out degassing treatment on the water to obtain degassed water; injecting a mixed solution of carbon dioxide and the degassed water into the geological reaction ore bed; carrying out carbon dioxide mineralization storage and hydrogen production reaction to obtain carbonate minerals and hydrogen; purifying the hydrogen to obtain purified hydrogen; the new energy surplus electric power is used for providing driving force for the carbon sequestration hydrogen production method. The carbon sequestration and hydrogen production method is high in reaction efficiency and reaction rate, not only assists carbon dioxide emission reduction, but also can obtain high-purity hydrogen, can also consume new energy surplus electric power, and has both environmental protection and resource utilization values.

The invention belongs to the technical field of coal mine underground carbon dioxide emission reduction, and relates to a mine CO2 direct capture-geological utilization-mineralization storage integrated method which comprises the following steps: firstly, arranging a CO2 gas concentration and air quality monitor in a return airway, collecting environmental data and transmitting the environmental data to an interactive computer for analysis; according to a set threshold value, a self-adaptive early warning device sends out a signal, CO2 is sucked in at the end of a return airway, and liquid CO2 is prepared in real time through reaction, purification and pressurization; the supercritical CO2 is used for preventing and treating coal and gas outburst disasters, and the liquid CO2 is used for preventing and treating goaf fire disasters to realize geological utilization; finally, gangue is intelligently recognized and grabbed to generate carbonate minerals with CO2, the carbonate minerals are evenly mixed with other materials, a paste filling material is obtained, and the paste filling material is conveyed to a goaf through a grouting high-pressure pipeline to be mineralized and sealed. The invention relates to a CO2 direct capture, geological utilization and mineralization storage integrated method, which effectively reduces the carbon emission in the coal mine production process.

The invention discloses low-carbon high-strength concrete and a preparation method thereof, the concrete comprises the following components in parts by weight: 0-150 parts of cement, 150-200 parts of fly ash, 150-200 parts of blast furnace slag, 70-100 parts of silica fume, 10-20 parts of nano MgO, 700-850 parts of sand, 900-100 parts of stone, 9-15 parts of a water reducing agent, 1-5 parts of diethanol isopropanolamine and 95-105 parts of water, the sand is composed of sand with the particle size of 1.25-5 mm and sand with the particle size of 0-1.25 mm, and the low-carbon high-strength concrete is obtained through CO2 curing. Through reuse of the machine-made sand and the natural sand and the synergistic effect of the nano MgO and the diethanolisopropanolamine, the hydration reaction and the pore structure are optimized, the strength and durability are improved, and the cement consumption is reduced; meanwhile, CO2 is converted into carbonate minerals by combining a carbon capture technology, so that the carbon emission is further reduced, and the performance is enhanced; the concrete quality is guaranteed, meanwhile, economic benefits and environmental value are achieved, and the method is suitable for green building engineering.

The invention provides a method for measuring gold distribution in high-carbon ore, and relates to the technical field of mineral processing and mineral content measurement, and the method comprises the following steps: 1) preparing an experimental sample; 2) preparing an electronic probe sample and an MLA sample; (3) quantitatively analyzing the types of the carbon minerals and the content of carbon in the minerals by using an electronic probe; (4) measuring the content of carbonate minerals and the content of other minerals through MLA qualitative analysis; (5) determining the content of monomers and continuous gold; 6) determining the gold content in the carbonate mineral; (7) determining the gold content in the metal mineral; and 8) determining the content of gold in silicate neutralized organic carbon. The determination method is simple, convenient to operate and short in time consumption, and a basis can be quickly provided for selection of a mineral separation process method and flow. The measurement method is based on calculation of the raw ore grade, errors caused by different treatment slag grades in all intermediate processes are avoided, secondary correction of mineral content data can be carried out in the measurement process, and the precision and accuracy are remarkably improved.

The invention discloses a shale gas exploration method, device, equipment and medium, and relates to the technical field of shale gas exploration and development, and the shale gas exploration method comprises the following steps: obtaining respective mass fractions of long quartz minerals, clay minerals and carbonate minerals of a shale reservoir in each well section of a current well, determining the maximum difference degree index, the local onrush characteristic index and the relative change amplitude index of the corresponding mineral content of the shale reservoir in each well section based on each mass fraction, and constructing a comprehensive heterogeneity index representing the shale reservoir in each well section; the porosity, the water saturation and the total gas content of the shale reservoir in each well section are obtained, so that the initial sweet spot grade of each well section is divided; performing grade correction on the initial dessert grade of the corresponding well section according to each comprehensive heterogeneity index to obtain a target dessert grade corresponding to each well section after correction; and determining a well track optimization scheme and a fracturing design scheme based on the target dessert grade so as to carry out corresponding shale gas exploration operation. And accurate shale gas exploration is realized.

The invention relates to an identification method and system for a hydrothermal alteration zone in carbonate rock construction, and belongs to the field of remote sensing geological prospecting, and the identification method comprises the steps: obtaining and preprocessing a spaceflight hyperspectral remote sensing image of a to-be-identified region, and obtaining surface reflectance data; mineral component analysis is carried out based on the surface reflectance data, carbonate mineral dominant pixels are marked, and a binary mask array after assignment is generated; extracting hydrothermal alteration information and generating an information intensity array according to the assigned binary mask array; performing binarization processing on the information intensity array according to a preset threshold value to generate a binary logic array; and converting the binary logic array into a geographic space vector area file based on an original image geographic coordinate system, and taking the geographic space vector area file as a hydrothermal alteration zone identification result. According to the method, rapid and accurate identification of the hydrothermal alteration zone in the carbonate rock area can be facilitated.

Method for calcining carbonate mineral stones in a parallel flow regenerative kiln wherein through said connecting channel, where a mixing gas stream is injected through a series of mixing gas entry means at high velocity in such a way that a ratio of momentum J between each gas stream and the combustion fumes is higher than 1, forming combustion fumes depleted in CO exiting the connecting channel.

To provide: a production method for powder having reduced specific surface area which enables the powder having reduced specific surface area to be easily produced; and a powder production device.SOLUTION: A production method for powder having reduced specific surface area includes: a reaction step of supplying gas G containing carbon dioxide to a solution 3 containing a metal ion to react the metal ion and a carbonate ion to produce an intermediate 7; and a separation step of separating the intermediate 7 from the solution 3 to produce carbonate mineral powder 2 which is powdered. During the reaction step, a surfactant S for reducing specific surface area of the intermediate 7 is added to the solution 3.SELECTED DRAWING: Figure 1

Methods for increasing the mechanical strength of subterranean formations using MXene-containing fluids may include introducing a plurality of MXene flakes into a subterranean formation comprising a carbonate mineral; and depositing at least a portion of the MXene flakes upon a surface of the carbonate mineral, within a plurality of pores of the carbonate mineral, or any combination thereof to increase a mechanical strength of the carbonate mineral.

The application discloses a kind of mixed mineral materials and methods for promoting long-term storage of sediment organic carbon, the material is composed of a certain proportion of serpentine and magnesite, steps are: 1) select mineral material serpentine and magnesite as raw material;2) serpentine and magnesite are pretreated;3) the serpentine and magnesite after pretreatment are mixed according to certain proportion;4) the mixed mineral material is spread to sediment surface with certain thickness;5) through the reaction of mixed mineral material and sediment organic carbon to generate stable magnesium carbonate mineral, realize long-term storage of sediment organic carbon in situ.The mineral material in the application has the characteristics of environmental friendly, reasonable formula, convenient to use, ecological environmental protection and the like.The application realizes long-term storage of sediment organic carbon in situ by the reaction of mixed mineral material and organic carbon, provides new ideas for water ecological restoration engineering to help carbon neutralization and realize sediment in situ carbon storage.

According to the carbonate rock rare earth element content in-situ analysis method and device, carbonate rock samples are obtained, and the carbonate rock samples are from various rock forms or components; carrying out sample pretreatment on the carbonate rock sample to obtain a to-be-analyzed sample; detecting the calcium element content and the magnesium element content of the sample to be analyzed; detecting the contents of main trace elements and rare earth elements of a single carbonate mineral on the to-be-analyzed sample; and by taking the calcium element content as an internal standard, carrying out data processing on the main trace and rare earth element content of the single carbonate mineral to obtain the rare earth and yttrium element content of the single carbonate mineral. Therefore, the accurate original deposition signal of the carbonate rock sample is obtained, and the accuracy of the environmental condition and the geological history when the reconstructed sediment is formed is improved.

The invention provides a method and a device for extracting soluble organic matters of a carbonate reservoir, and the method for extracting the soluble organic matters of the carbonate reservoir comprises the following steps: extracting a reservoir rock sample with a first mesh number to obtain free-state soluble organic matters and first residual substances of the reservoir rock sample; crushing the first residual substance to a second mesh number, and removing carbonate minerals in the first residual substance; extracting the first residual substance from which the carbonate minerals are removed so as to obtain bound-state soluble organic matters and second residual substances of the reservoir rock sample; crushing the second residual substance to a third mesh number to destroy reservoir rock particles of the reservoir rock sample; and extracting the second residual substance crushed to the third mesh number to obtain the inclusion soluble organic matter. According to the method, carbonate reservoir rocks with different granularities are extracted for multiple times to obtain soluble organic matters in different occurrence states, and the soluble organic matters are compared with hydrocarbon source rocks in characteristic to judge the oil and gas filling period.

The invention discloses a method for mineralizing, reinforcing and protecting weathered sandstone cultural relics through carbon sequestration bacteria, and belongs to the technical field of cultural relic protection and restoration. In order to solve the problems of residue of deliquescent anionic salt and generation of bad byproduct ammonia gas in the existing technology for reinforcing and protecting sandstone cultural relics by microbial mineralization, the reinforcing depth and strength are improved in a lower-carbon and higher-efficiency manner, and an aspartic acid chelated calcium liquid containing low-solubility active magnesium oxide is effectively permeated into weathered sandstone; the carbon capture and nucleation effects of the bacillus mucilaginosus with the carbon sequestration function are utilized, on one hand, carbon dioxide in air is captured and converted into carbonate needed by mineralization, on the other hand, carbonate in an ammonium carbonate solution which is easy to volatilize and decompose is locked and used for carbonate mineral crystallization, and meanwhile ammonium ions are inhibited from being converted into ammonia gas to overflow; calcium carbonate and basic magnesium carbonate are induced to be subjected to intercrystallization nucleation, and a high-strength cementation structure is formed in pores of the weathered sandstone and is used for permeating, reinforcing and protecting the weathered sandstone cultural relics.

Method and kiln for calcining carbonate mineral stones in a rectangular shaft parallel flow regenerative kiln (PFRK) in common conditions of combustion, with improved extraction of cooling gas.

Method for calcining carbonate mineral stones in a parallel flow regenerative kiln wherein the method comprises an extraction step of the heated cooling gas through a series of extracting port located in an effective cooling zone within a cooling zone below a connecting channel, said heating cooling gas enters into an implementation port orifice and passes into a port duct to reach an evacuation element at an average extraction velocity comprised between 0.5 and 5 m / s.

The invention discloses a mixed mineral material and method for promoting long-term storage of sediment organic carbon, the material is composed of serpentine and magnesite according to a certain proportion, and the method comprises the following steps: 1) selecting mineral materials serpentine and magnesite as raw materials; (2) pretreating the serpentine and the magnesite; 3) uniformly mixing the pretreated serpentine and magnesite according to a certain proportion; 4) spreading the mixed mineral material on the surface of the sediment by a certain thickness; and 5) reacting the mixed mineral material with the sediment organic carbon to generate a stable magnesium carbonate mineral so as to realize in-situ long-term storage of the sediment organic carbon. The mineral material has the characteristics of environment friendliness, reasonable formula, convenience in use, ecological environment friendliness and the like. According to the method, in-situ long-term sequestration of the sediment organic carbon is realized through reaction of the mixed mineral material and the organic carbon, and a new thought is provided for assisting carbon neutralization and realizing in-situ carbon sequestration of the sediment in water ecological restoration engineering.

The present invention concerns an industrial chemical process (400f) and an apparatus for carrying out that process. The chemical process integrates into a single, combined method: (i) a method (303, 304) of producing iron and / or manganese from their ores, and (ii) a method (205a, 205b, 207, 208, 209) of producing an oxide or hydroxide of at least one of calcium, magnesium and iron from another ore respectively comprising a carbonate mineral of at least one of calcium, magnesium and iron. This combined method has the iron and / or manganese ore and the other ore comprising the carbonate mineral as its only essential ingredients, with common salt and / or water as optional extra ingredients. The combined method produces iron and / or manganese in elemental form, an oxide or hydroxide derived from the carbonate mineral, and oxygen as its corresponding products. If the iron and / or manganese ore also comprises a siliceous mineral, the method may also produce an alkaline mixture comprising sodium silicate as a co-product. Salt and water act as intermediaries to produce these end-products, but are only consumed if supplied in excess. An amount of sodium oxide, hydroxide and / or carbonate determined by the amount of salt consumed may be produced as a co-product, along with a corresponding amount of at least one of chlorine and hydrochloric acid. An amount of hydrogen determined by the amount of water consumed may also be produced as a co-product, along with an increased amount of oxygen. The iron, manganese and oxygen produced may all be used in steelmaking. Any excess oxygen may be safely vented to atmosphere. The oxide or hydroxide derived from the carbonate mineral may be used in cement manufacture, as a flux in steelmaking and / or as an ingredient in the manufacture of soda-lime glass. The alkaline mixture comprising sodium silicate may be used as an alkaline activator for an alkaline activated or geopolymer cement. The sodium carbonate may be used in the manufacture of soda-lime and / or borosilicate glass, for example. The chlorine and / or hydrochloric acid may be used in the manufacture of chlorinated organic compounds, for example. The hydrogen may be used as a fuel in a hydrogen economy. The method of the invention requires no nett input of heat because the chemical reactions it involves are exothermic overall. It also consumes no fossil fuels and has electricity as its only energy requirement. Thus if the electricity is produced from a source of renewable energy, this method produces no greenhouse gas emissions. In some embodiments, the method can even have a negative carbon footprint overall. The invention is intended to replace existing techniques for producing iron and / or manganese from their ores, including hydrogen-DRI, the calcination of limestone and other carbonate minerals, both in cement manufacture and in the production of lime for other purposes, and the ammonia-soda, or Solvay, process for the production of sodium carbonate. The invention therefore has the potential to eliminate up to about 20% of anthropogenic carbon dioxide emissions. [Fig. 9B]

A product-activity-tunable method for calcining a carbonate mineral, relating to a method for calcining a carbonate mineral. In the present invention, two stages of reactions (i.e., a carbonate decomposition reaction and a product high-temperature sintering reaction) of a carbonate calcination process are separated in two reactors, i.e., a carbonate decomposition reactor and an activity tunning reactor, and the activity of products is flexibly regulated and controlled by respectively controlling the reaction conditions of the two reactors, thereby achieving co-production of multiple active products, and solving the problems of traditional production technologies, e.g., single product activity and limited product application. In addition, high-temperature flue gas from the activity tunning reactor is used as a heat source for the carbonate decomposition reactor, achieving efficient cascade utilization of energy in a system, and achieving significant energy saving and consumption reduction effects. In addition, the production process takes only a few seconds to a few minutes, the system processing capacity is high, and large-scale industrialization is easy to achieve.

The application of geocatalysts in controlling CO2 capture processes in situ as well as in a reaction vessel, chamber or tower is described. More specifically, a process for controlling the reaction of a CO2-containing gas stream with one or more starting materials selected from waste building material, mineral, rock, sand, amorphous material or combinations thereof is disclosed: wherein said starting material comprises Si and / or Al, and one or more divalent cation(s), water, and one or more organic compound(s) to control the reaction: thereby providing a product comprising: at least one carbonate mineral and preferably colloidal silica.

The invention discloses a pressure-boosting microbial capillary crystalline type negative pressure anti-seepage device, and relates to the technical field of wall surface repairing, the pressure-boosting microbial capillary crystalline type negative pressure anti-seepage device comprises a body mechanism, the body mechanism comprises a guide rail frame, a treatment mechanism is arranged on the front surface of the guide rail frame, and the treatment mechanism comprises a pressurizing unit which is located on the front surface of the guide rail frame; the pressurizing unit is used for supplementing a carbon source to the sprayed microorganism slurry; the treatment mechanism further comprises a curing unit located on the front face of the guide rail frame, the pressurizing unit and the curing unit are used in cooperation, and the curing unit is used for improving the biological activity of microorganisms. According to the device, after microbial mortar is sprayed through the spraying mechanism, the water seepage wall surface is locally covered through the pressurizing disc, so that a carbonization reactant source is supplemented in time, more sedimentary carbonate mineral crystals are generated, and the anti-seepage plugging effect of the water seepage wall surface is improved.

The invention provides a coal dust deashing method, and belongs to the technical field of coal cleaning and processing. According to the method, the anthracite is subjected to first acidolysis by adopting hydrochloric acid, so that carbonate minerals and metal oxides such as Fe2O3 and CaO in the anthracite are directionally removed; then destroying a silicate crystal structure in the anthracite by adopting a hydrofluoric acid solution so as to deeply desiliconize; and finally, hydrochloric acid is adopted for second acidolysis, insoluble fluorides such as CaF2 generated in the hydrofluoric acid desiliconization stage are dissolved, efficient deashing of anthracite is achieved, and the ash content of finally obtained deashed coal is smaller than or equal to 0.2 wt%. The method has the advantages of extremely high anthracite ash removal efficiency and low cost, is suitable for efficiently cleaning anthracite to prepare subsequent products, and does not cause secondary pollution.

The invention provides a carbonic anhydrase bacterium-based waste shale gas well carbon dioxide mineralization and storage method. According to the waste shale gas well carbon dioxide mineralization and storage method based on carbonic anhydrase bacteria, the mineralization and storage efficiency and stability of carbon dioxide in a waste shale gas well are remarkably improved, the carbon dioxide hydration reaction is accelerated through carbonic anhydrase bacteria catalysis, rapid precipitation of carbonate minerals is achieved, and the carbon dioxide yield is increased. Meanwhile, the strain activity is maintained in a complex geological environment, and the sealing cost and leakage risk are reduced.

Preventing the flow of soil grains into oil and gas wells is highly desirable for the protection of hydrocarbon production. Geotechnical engineering solutions addressing this issue may utilize enzyme-induced precipitation methods to consolidate and increase shear strength. Methods may comprise: providing a mixture comprising urea, a urease enzyme, calcium chloride, magnesium chloride, and a cellulose; contacting at least a portion of the mixture with at least a portion of a subterranean formation; and forming a biomineral precipitate within the subterranean formation. The biomineral precipitate, comprised of a carbonate mineral and an evaporite mineral, may consolidate particles within the subterranean formation to form a consolidated body.

The method comprises: introducing an aqueous carrier liquid comprising ammonium phosphate into a subterranean formation comprising carbonate minerals; and interacting the carbonate mineral with the ammonium phosphate salt to convert at least a portion of the carbonate mineral to a hydroxyapatite mineral; wherein the hardness of the subterranean formation is increased after formation of the hydroxyapatite mineral.

The invention relates to the technical field of mineral separation technologies, in particular to a combined inhibitor and method for reverse flotation magnesium removal of sedimentary phosphorite, and the combined inhibitor is prepared by compounding the following components in parts by mass: 20-30 parts of aluminum sulfate octadecahydrate, 50-70 parts of tartaric acid and 10-20 parts of citric acid. The method is completed through a technical route of coupling regulation and inhibition of apatite by a combined inhibitor and reinforced separation of calcium and magnesium carbonate minerals by a mixed collecting agent. The method comprises the following steps: removing magnesium through a'one-roughing, one-refining and one-sweeping 'process under the condition that the pH value is 6-7 by combining with a sodium oleate / dodecylbenzene sulfonic acid / 2-ethylhexyl phosphate 2-ethylhexyl ester mixed collecting agent, so as to obtain phosphate concentrate with MgO less than 0.8%, P2O5 more than 29% and recovery rate more than 90%.

Gel-based subterranean formation hardening compositions and methods thereof may comprise introducing an aqueous carrier fluid comprising a gel and an ammonium phosphate salt into a subterranean formation comprising a carbonate mineral; and interacting the carbonate mineral with the ammonium phosphate salt to convert at least a portion of the carbonate mineral into a hydroxyapatite mineral; wherein the subterranean formation has an increased hardness after forming the hydroxyapatite mineral.

The invention relates to a method for the preparation of a carbonated mineral component in particular for the use as a substituent of cement in hydraulic binder compositions wherein a raw material comprising at least one of the group of concrete demolition waste, hardened concrete paste, hardened cement paste, or any mineral component containing hydrated calcium silicates, calcium aluminates is carbonated and heated, a carbonated mineral component manufactured in this way, a method for the preparation of a hydraulic binder using the carbonated mineral component and a cementitious component as well as a concrete composition with that hydraulic binder.

The present invention relates to a method and equipment for preparing a deacidifying agent from municipal solid waste incineration fly ash. The method comprises the following steps: primary conversion, converting various types of minerals in the municipal solid waste incineration fly ash into metal carbonate minerals; secondary conversion, converting the obtained metal carbonate minerals into corresponding metal oxides to obtain a deacidifying agent with high alkalinity; and optionally, a tertiary conversion before deacidification application, hydrating the metal oxides to make them into a deacidifying agent with high activity; wherein the municipal solid waste incineration fly ash is generated by deacidifying the flue gas from municipal solid waste incineration; the primary conversion is carried out in an aqueous solution and the conversion reagent contains water-soluble carbonate and / or water-soluble bicarbonate; the secondary conversion is carried out at a temperature above 700 °C. The method of the present invention realizes the harmlessness, reduction and resource utilization of the municipal solid waste incineration fly ash, prevents the environmental release and ecological burden of toxic and harmful substances, and has good technical and economic feasibility.