77 results about "Silicate minerals" patented technology

The invention provides a mixed type shield synchronous grouting material and a grouting process, and relates to the technical field of building materials, the grouting material is composed of fast hydration Portland cement, activated aluminosilicate minerals, nanometer silicon powder, bentonite, a reversible thixotropic polymer, a delayed hydration agent, coated calcium aluminate fast setting powder and a coated silicate gel precursor. The early-stage reaction is inhibited by delaying hydration, and a controllable solidification sequence of slurry from a flowable stage, a rearrangement structure stage to a rapid solidification stage is realized by breaking a membrane under the action of temperature or pressure gradient. In the process, by monitoring the conductivity, the concentration of Ca < 2 + > / Mg < 2 + > and the temperature in real time, the adding amount of an additive and grouting parameters are automatically adjusted, so that the stable diffusivity of the material is kept and the curing speed is accelerated under different stratum conditions. The solidified body forms a C-S-H, C-A-S-H and N-A-S-H gel interpenetrating network, the permeability coefficient is low, the water dispersion resistance is high, and the shield grouting quality and the tunnel structure safety can be remarkably improved.

The invention discloses a fracturing imbibition system for refracturing a low-permeability tight oil reservoir and a preparation method of the fracturing imbibition system, and belongs to the technical field of fracturing fluids, the fracturing imbibition system comprises: an acid liquid base fluid: hydrochloric acid, hydrofluoric acid, EDTMPS and deionized water; an amphoteric betaine viscoelastic surfactant; biologically modifying the nanoparticles; a Gemini cationic surface active agent; a corrosion inhibitor; and an organic silicon defoaming agent and a fluorocarbon discharge aiding agent. According to the fracturing imbibition system, through the integrated design of the multifunctional surfactant, the problems that a traditional acid fracturing fluid is insufficient in silicate mineral dissolving capacity, high-temperature viscosity is attenuated, and corrosion inhibitor dependence is caused are solved.

The application provides a preparation method of a two-dimensional layered silicate mineral film treated by a reducing modifier, which comprises the following steps: firstly, organic modification of a two-dimensional layered silicate mineral by a reducing ionic liquid; then, loading of the reducing modifier into the interlayer of the two-dimensional layered silicate mineral; and finally, construction of a two-dimensional channel by vacuum filtration to prepare a film with a thickness of 5-20 microns. The two-dimensional layered silicate mineral film obtained by the method has a large surface area and can effectively treat heavy metal Cr(VI). The construction of the two-dimensional channel provides a limited space for the reducing modifier to prevent oxidation and provides abundant sites for the oxidation-reduction reaction in the nanopore channel, and solves the problems of desorption difficulty and secondary pollution caused by the traditional adsorption method for treating heavy metals.

The invention discloses a method for recovering fine-crushed gold-loaded resin from gold ore leaching residues, and belongs to the technical field of mineral processing. The invention provides an efficient recovery method aiming at the problem of resource waste caused by loss of fine-crushed gold-loaded resin along with leaching residues in the gold extraction process of a resin ore pulp method. The gold ore tailings mainly comprise silicate minerals such as quartz, feldspar and mica, the granularity is fine, and the viscosity of ore pulp is high. The method comprises the following steps: carrying out size mixing and dispersion pretreatment on the tailings containing the fine-crushed gold-loaded resin; gold-bearing resin rough concentrate is obtained through screening and grading; the rough concentrate is subjected to desliming pretreatment; the deslimed materials are subjected to dense medium separation and concentration, and efficient separation is achieved through the density difference between resin and gangue minerals; and finally, the obtained gold-bearing resin concentrate is subjected to medium drainage washing. The sorting technology adopted by the invention has the advantages of high separation precision, strong adaptability and the like, can realize efficient recovery of fine-crushed gold-loaded resin from a complex tailing system, and has remarkable economic benefits and environmental benefits.

The invention discloses a composite sensing material as well as preparation and application thereof in liquid food spoilage monitoring. The material is of a metal oxide semiconductor / layered silicate mineral and wax integrated structure, and comprises a heterojunction sensitive layer formed by compounding metal oxide semiconductor nanoparticles and layered silicate minerals, and a wax super-hydrophobic protective layer coating the surface of the heterojunction sensitive layer. The preparation method comprises the following steps: dispersing the two raw materials into suspension liquid, coating the suspension liquid on an electrode to form the sensitive layer, and then coating and curing the wax material to form the protective layer. According to the material, the room-temperature gas-sensitive activity is enhanced through the heterojunction, meanwhile, the super-hydrophobic wax layer is used for resisting high humidity and liquid pollution, and function synergy is achieved. The obtained material is high in sensitivity and quick in response to decay mark gases such as ammonia gas and hydrogen sulfide at room temperature, and has excellent environmental interference resistance. The method is simple in process, low in cost, high in environmental adaptability, capable of being integrated in liquid food packaging, capable of achieving real-time in-situ monitoring of the decay process and wide in application prospect.

A copolyester composition comprising a metal phosphinate flame retardant, an acrylic silicone impact modifier, and a silicate mineral, which provides high tensile and / or flexural modulus while maintaining thermal and impact properties and having improved flame retardant properties, a method for manufacturing the copolyester composition, and an article manufactured from the copolyester composition are provided.

The invention discloses an efficient deionizing neutralizer for strongly acidic pickling wastewater and a preparation method of the efficient deionizing neutralizer, and belongs to the technical field of industrial wastewater treatment. The neutralizer is prepared by carrying out pure physical crushing, grinding, screening and compounding on magnesium silicate minerals, aluminum clay minerals and siliceous inert minerals, is white powder, has the density of 1.15-1.25 g / cm < 3 >, is not dissolved, not hydrolyzed and not reacted with water in pure water, is only subjected to directional proton consumption reaction with H under the strongly acidic condition with the pH value of 0-3, and can be used for preparing a high-purity high-purity high-purity magnesium oxide. After the pH value of the wastewater is rapidly increased to 4-5, the device is automatically stopped. The whole process of the preparation method is physical processing, high-temperature calcination is avoided, and chemical modification is avoided. The method provided by the invention solves the problems of scaling, large sludge amount and difficult pH control of the traditional neutralizer, has the advantages of greenness, environmental protection, safety, easy operation and low cost, and is suitable for strong acid pickling wastewater treatment in steel, electroplating and metal processing industries.

The invention relates to the technical field of silicon carbide ceramics, in particular to an in-situ induced low-temperature eutectic silicon carbide porous ceramic and a preparation method thereof. The material is prepared by mixing and sintering the following materials: silicon carbide, a synergistic sintering system, a dispersing agent, a plasticizer and water, wherein the synergistic sintering system comprises the following components: pregelatinized starch, a silicate mineral material, aluminum oxide, calcium carbonate, glass powder and rare earth oxide; the pregelatinized starch is adopted as an adhesive, the thermal decomposition behavior of the pregelatinized starch and the chemical reaction activity of the glass powder and the calcium carbonate form synergy in the process, seamless connection of the whole process from the room temperature to the sintering temperature is achieved, the sintering temperature is greatly reduced, meanwhile, the glue discharging step is omitted, and the silicon carbide porous ceramic product with good performance and few defects is obtained.

The present invention provides a method (600a) and apparatus for producing an alkaline mixture comprising sodium silicate, which mixture is suitable for use as an alkaline activator for alkaline activated and geopolymer cements, but which may also be used, for example, to mineralize captured carbon dioxide. The method comprises comminuting (301) an ore of a target metal into fines, wherein the ore comprises a siliceous mineral and at least one of iron and manganese as the target metal. The siliceous mineral may comprise the target metal itself and / or it may be silica and / or another silicate mineral present as gangue. The ore is dehydrated and hydroxylated compounds contained therein are dehydroxylated (302). The ore thus treated is then reacted (601) in an inert atmosphere with an amount of liquid sodium in excess of the stoichiometric amount thereof required for a redox reaction between the liquid sodium and an oxide of the target metal from the ore, to precipitate out from the liquid sodium a solid phase comprising both the target metal in elemental form and other insoluble products comprising sodium oxide. The redox reaction is conducted at a temperature of at least 320 °Celsius to induce a reaction between the sodium oxide and silica derived from the siliceous mineral to produce sodium silicate, but also below a temperature at which the liquid sodium can react with the oxide of the target metal to produce a ternary oxide thereof. At least some of the liquid sodium having sodium silicate dissolved therein is then separated (305) from the solid phase and is reacted (602) with at least one of oxygen and water to produce a mixture comprising sodium silicate and at least one of sodium oxide and sodium hydroxide. The corresponding apparatus comprises a comminution device (such as a rock crusher or grinder), means for dehydrating and dehydroxylating the ore (such as a dryer), a gas-tight first reaction vessel for reacting the ore thus treated with the liquid sodium, a solid-liquid sodium phase separator, and a second reaction vessel for reacting the liquid sodium having sodium silicate dissolved therein with at least one of oxygen and water. The resulting alkaline mixture is therefore produced whilst extracting the target metal in elemental form from its ore. Thus the energy consumed is split between the production of these two co-products, making the method of the invention a low-energy method of producing an alkaline activator for alkaline activated and geopolymer cements. Both reactions (601, 602) are also significantly exothermic and at least some of the thermal energy from them may be recycled. The invention does not consume any carbon and is therefore at least carbon-neutral. On the other hand, it consumes the silica content of gangue mineral species and / or of siliceous minerals of the target metal in its ore, which have previously been treated as waste products. The amount of waste material produced when extracting the target metal from its ore is thereby reduced as well.

The present invention pertains to an oil-in-water type pest repellent composition containing the following components (A)-(E): (A) 13-50 mass% inclusive of one or more non-volatile liquid oily components selected from the group consisting of silicone oils, ester oils, ether oils, hydrocarbon oils, aliphatic alcohols, and polyols; (B) 0.5-35 mass% inclusive of hydrophilic inorganic particles containing silica particles and / or silicate mineral particles and having a volume median diameter of 1-40 [mu] m inclusive; (C) 0.1% by mass or more and 3% by mass or less of one or more substances selected from the group consisting of polyether-modified silicones, polyglycerol-modified silicones, branched polyglycerol-modified silicones, alkyl glyceryl ether-modified silicones, and carboxyl-modified silicones, which are liquid at 25 DEG C; (D) 0.05% by mass or more and 3% by mass or less of a tackifier; and (E) 30 to 86.35 mass% inclusive of water, the viscosity of the component (A) at 23 DEG C as determined by a B-type rotational viscometer being 1 to 400 mPa.s inclusive, and the silicone oil of the component (A) does not contain the component (C).

The present disclosure provides a Paenibacillus mucilaginosus LT1906 and use thereof, and a microorganism-activated circulating fluidized bed (CFB) fly ash-based cementitious material and a preparation method and use thereof, belonging to the technical field of cementitious materials. The Paenibacillus mucilaginosus LT1906 has a deposit number of CGMCC No. 21337. The strain is capable of dissolving silicate minerals and aluminosilicate minerals in the CFB fly ash to increase dissolution of active SiO2. The strain is used for activating the CFB fly ash-based cementitious material, to ameliorate a large water demand and a low early strength of the cementitious material, thereby improving comprehensive utilization of the CFB fly ash in the field of building materials.

The invention relates to talaromyces pseudomonas hzt-3'as well as a preparation method and application of the talaromyces pseudomonas hzt-3 ', and belongs to the technical field of application of microorganisms. The strain is preserved in the China Center for Type Culture Collection, the preservation number of the strain is CCTCC NO: M 20251797, and the strain is classified and named as (Talaromyces pseudomonas hzt-3 '). The method comprises the following steps: collecting moss and vegetation soil samples from basalt, diabase and dolomite; diluting bacterial colonies in the sample, and separating and purifying the bacterial strains by using a Czapek culture medium; anorthite and serpentine are used as inorganic salt sources for strain screening, and strains which grow stably and have a good leaching effect on calcium magnesium silicate minerals are obtained; the strain is applied to efficient leaching of anorthite, serpentine and wollastonite, and compared with a sterile control group, the effect of improving the leaching rate of calcium and magnesium ions is remarkable. The method solves the problem that the reaction rate of mineral sequestration carbon dioxide is slow due to the fact that ions in natural silicate minerals are difficult to leach, and has great significance.

The invention discloses a fluxing agent for replacing fluorite in iron and steel smelting and a manufacturing method thereof, and belongs to the field of iron and steel smelting. The fluxing agent for replacing fluorite is prepared by taking nepheline syenite containing various silicate minerals as a main material, crushing, adding a mixture taking bentonite and starch as a binder, adding water, uniformly mixing, then pressing into pellets with the diameter of 30-40mm by a machine, and airing and drying for use. Wherein the binder accounts for 3-5% by weight, is the same as fluorite, has the effects of reducing the melting point and apparent viscosity of the slag, improving the fluidity of the slag and reducing the iron loss of the slag, and can increase the alkalinity of molten steel and improve the quality of the molten steel. The ingredients overcome the defects of fluorite in iron and steel smelting, corrosion to a furnace lining of a melting furnace can be reduced, the health of workers is not harmed, pollution of slag to the environment can be reduced, and the post-treatment process of the slag is simplified, so that the treatment cost of the slag is reduced.

The embodiment of the invention relates to the technical field of organic fertilizers, and provides a biochar-based composite organic fertilizer for improving a soil structure and a preparation method of the biochar-based composite organic fertilizer. The biochar-based composite organic fertilizer comprises 30-50% of biochar, 5-10% of a microbial agent, 20-30% of crop straw powder, 3-5% of ammonium sulfate, 5-8% of silicate mineral powder and 0.2-0.5% of zinc sulfate borax, the biochar-based composite organic fertilizer for improving the soil structure is used for loess high slope soil, the soil organic matter increase amplitude reaches three times that of a conventional organic fertilizer, the corrosion resistance index is reduced by 50%, and the soil structure is improved. Through the synergistic effect of the biochar, the microbial agent and the mineral powder, the soil organic matter and corrosion resistance are remarkably improved.

This invention relates to the fields of adsorbent preparation and heavy metal remediation technology, and particularly to an amorphous iron-magnesium-aluminum silicate, its preparation method, and its applications. This invention utilizes molten salt-mediated ion exchange and lattice recombination under high-temperature conditions to completely and uniformly transform various silicate minerals from complex and inconsistent natural clay minerals into a non-naturally formed, structurally homogeneous, and stable amorphous iron-magnesium-aluminum silicate. This overcomes the limitation of traditional adsorbents having a narrow applicable concentration range, exhibiting extremely strong removal capabilities for heavy metal ions from high to low concentrations, achieving deep purification. Based on the theory of "increasing configurational entropy," this invention proposes the design of a silicate network framework with dense, highly active sites and multiple metals, breaking through the traditional approach of "simple modification" of natural clay minerals. It fundamentally reconstructs their material composition, providing a material that combines low cost with revolutionary adsorption performance.

The invention discloses a method for efficient flotation development and utilization of columbite, and belongs to the technical field of mineral separation. The method comprises the following steps: carrying out ore grinding, reselection desliming on a table concentrator, removal of strong magnetic gangue minerals by low intensity magnetic separation and removal of silicate minerals by high intensity magnetic separation on columbiobite ores, carrying out size mixing on obtained magnetic separation concentrates, and carrying out columbiobite reinforced flotation by adopting a columbiobite collecting agent and a silicate mineral inhibitor to obtain columbiobite rough concentrates; and the columbiobite rough concentrate is subjected to size mixing till the pH value is 4.2 or below, a fatty amine collecting agent is adopted, columbiobite fine flotation is conducted, and columbiobite concentrate is obtained. According to the method, the flotation efficiency of the ferroniobium minerals can be remarkably improved, interference of gangue minerals is reduced, high recovery rate and high grade of the ferroniobium concentrate are ensured, particularly, the method has remarkable technical advantages in treatment of low-grade ferroniobium minerals, and a feasible technical route is provided for reasonable development of niobium resources.

The application belongs to the technical field of foundry coating, and particularly discloses an anti-crack sand mold foundry coating and a preparation method thereof. The coating comprises the following raw materials in mass fractions: brown corundum powder 900-1100 parts, calcined kaolin 100-200 parts, silica sol 430-530 parts, magnesium-bearing silicate mineral composite fiber 80-100 parts, composite microspheres 20-25 parts, organic rheological agent 1-3 parts, wetting agent 2-4 parts, defoaming agent 1-3 parts and deionized water 200-300 parts. The application constructs a dynamic self-adaptive coating system with normal-temperature stability, medium-temperature buffering and high-temperature anchoring: the composite microspheres soften to form a glassy liquid film at a medium-temperature range, absorb thermal stress and heal micro-cracks; the magnesium-bearing silicate mineral composite fiber releases magnesium oxide at high temperature, reacts with aggregates to form a microcrystalline structure and balance the thermal expansion difference. The coating has excellent high-temperature anti-cracking performance and suspension stability.

The invention discloses an offset printing gloss oil composition for endowing a printed matter with a silky touch feeling. The offset printing gloss oil composition comprises an oily binder and a touch feeling filler. The core of the touch filler is lamellar silicate mineral particles, preferably bentonite organically modified by long-chain quaternary ammonium salt, and can be compounded with oligomeric silsesquioxane and / or nano polytetrafluoroethylene particles. The addition amount of the touch filler in the composition is 5-15%. The invention also provides a method for forming a touch functional layer by coating and curing the composition through an offset printing process, and a prepared printed matter with smooth touch. According to the scheme, the problem that a lubricating structure of traditional bentonite in an oily system is easy to damage is effectively solved, the low-cost mineral filler is utilized, a standard offset printing process is adapted, and excellent and lasting silky touch can be economically and efficiently achieved.

The embodiment of the present application provides a method for hydrogen-carbon co-conversion and carbon sequestration in a geological body and an operation system thereof. The method comprises the following steps: injecting water, carbon dioxide and a catalyst into the geological body, carrying out hydrogen production, carbon dioxide mineralization and in-situ methanation, and obtaining methane. The catalyst comprises at least one of nickel, iron, cobalt and molybdenum or an oxide thereof; and the geological body comprises silicate minerals. The method is used to realize the integrated operation of long-term stable sequestration of carbon dioxide and energy conversion process, so as to improve the comprehensive energy utilization efficiency of the geological sequestration system.

According to the collecting agent, by adjusting the pH value of ore pulp and adjusting the dispersion and agglomeration properties of the ore pulp, selective inhibition of silicate minerals is enhanced, the separation rate of useful minerals and gangue minerals can be increased, the yield of concentrates can be increased, and meanwhile the yield of the concentrates can be increased. And the collecting agent only contains green and environment-friendly components, so that organic combination of energy conservation, emission reduction and efficient sorting is realized, and the collecting agent has important significance in promoting green mine construction and bauxite resource development and utilization.

The application discloses application of a triazine hexapoly quaternary ammonium salt compound as a silicate mineral flotation collector, and belongs to the field of mineral flotation. The triazine hexapoly quaternary ammonium salt compound has isolation groups in the middle of the molecule, so that the molecules can be arranged in order on a gas-liquid interface; meanwhile, the branched chain has six hydroxyl groups and quaternary ammonium salt groups, which can greatly improve the fluidity of a liquid film in a flotation process, avoid excessively viscous mineral foam, and solve the problem of excessively stable foam of a traditional cationic collector affecting post-processing of the flotation process. Meanwhile, the application utilizes various active groups to strongly adsorb a dissociation surface of a silicate mineral, so that a concentrate with high grade and high recovery rate can be obtained at a low reagent consumption.

This invention belongs to the field of rice cultivation technology, specifically relating to a method for synergistic yield increase through high-density rice planting and the application of silicate mineral materials. The method includes the following steps: before transplanting rice seedlings, applying silicate mineral materials to the soil at a rate of 4.5 tons / hectare to 6.0 tons / hectare in a single application; transplanting and high-density planting of rice seedlings; wherein the high-density planting density after transplanting is 312,000 hills / hectare to 345,000 hills / hectare. The method provided by this invention achieves a synergistic effect on rice growth and yield through high-density rice planting combined with the application of silicate mineral powder, essentially "compensating for weaknesses and synergizing advantages." The synergy of these two methods can alleviate the risk of lodging and nutrient competition caused by high-density planting, achieving the comprehensive goals of "nitrogen reduction, high-density planting, quality improvement, and stress resistance."

To provide silicate mineral having an average particle diameter larger than several hundred nm without containing impurities such as crystalline silica.SOLUTION: The silicate mineral powder of the present invention has a crystalline silica content of 0.05 wt.% or less and an asbestos content of 0.1 wt.% or less. The mineral preferably contains carbonate and preferably has an average particle diameter of 100 nm or more. Further, the silicate mineral powder of the present invention is obtained by subjecting natural silicate mineral to warm water treatment, hot water treatment, or hydrothermal reaction treatment at a pH of 4 or more and 9.4 or less. At this time, the temperature in the warm water treatment, hot water treatment, or hydrothermal reaction treatment is 120°C or more and 370°C or less, the pressure is equal to or higher than the saturation vapor pressure of water, and the processing time is 1 minute or more and 10 hours or less.SELECTED DRAWING: Figure 3

The invention discloses a method for improving the flavor of white spirit based on iron aluminosilicate minerals, and belongs to the technical field of white spirit aging. The preparation method comprises the following steps: adding Fe2Al4Si5O18 (iron aluminosilicate mineral) into a preparation process of a pottery jar to obtain a functional pottery jar, then putting white spirit into the functional pottery jar, and storing and aging to obtain white spirit with very high flavor component content; or placing Fe2Al4Si5O18 (iron aluminosilicate mineral) as a catalyst in the pottery jar for storage and aging, so as to obtain the white spirit with very high flavor component content. The method provided by the invention can greatly improve the flavor component content of the Baijiu.

The present disclosure relates to compositions comprising a mechanochemically carboxylated mineral filler and a binder, in which the binder is cement and / or asphalt and the filler is obtained by mechanochemically carboxylating a silicate mineral. The disclosure further relates to methods for preparing the compositions and for preparing concrete from these compositions and to the concrete obtained from the method. Uses of the mechanochemically carboxylated mineral filler, for example as a filler in asphalt or cement, are described.

The embodiment of the invention provides a method for carrying out hydrogen-carbon synergistic conversion and carbon sequestration in a geologic body and an operation system thereof. The method comprises the following steps: injecting water, carbon dioxide and a catalyst into a geologic body, and carrying out hydrogen production, carbon dioxide mineralization and in-situ methanation to obtain methane. Wherein the catalyst comprises at least one of nickel, iron, cobalt and molybdenum simple substances or oxides thereof; the used geoplast comprises silicate minerals. The method is used for realizing integrated operation of long-term stable sealing and storage of carbon dioxide and an energy conversion process, so that the comprehensive energy utilization efficiency of a geological sealing and storage system is improved.

The invention discloses a method for testing in-situ iron isotope composition of silicate minerals of an iron-poor mantle, and relates to the technical field of isotope analysis. According to the method, high-energy femtosecond laser and a multi-receiving inductively coupled plasma mass spectrometer (MC-ICP-MS) are combined for the first time to carry out in-situ iron isotope analysis on iron-poor mantle silicate minerals such as monohectorite, rhomboxene and garnet. The method can ensure that higher analysis sensitivity can still be maintained when a low-iron-content sample (FeO is less than 3wt%) is measured, so that higher analysis precision is ensured. Through the method, a series of glass standard samples and natural samples composed of monohectorite, rhomboxene and garnet matrixes synthesized in a laboratory are accurately determined. The method fills the blank of laser in-situ measurement of Fe isotope composition of the iron-poor slow silicate mineral, and has a wide application prospect.

This invention relates to a nuclear-grade air filter in the field of air filter technology. The nuclear-grade air filter includes a reusable frame and a filter element. The reusable frame is made of inorganic non-metallic mineral fiber composite material. The reusable frame includes two side plates, two top plates, and several grid plates. The two side plates are vertically arranged between the two top plates. Side posts are provided at the joints between the side plates and the top plates. The side plates and top plates are fixed together by a mortise and tenon structure formed by the side posts. The filter element is arranged in a corrugated structure within the reusable frame. Several grid plates are arranged on the front and rear end faces of the reusable frame. The corners of the filter element are fixed by the grid plates. The inorganic non-metallic mineral fiber composite material includes one of silicate minerals or basalt and basaltic inorganic non-metallic stone, or a modified composite material thereof. The silicate minerals are composed of at least one of plagioclase, silica, and pyroxene, and the silicate mineral content is at least 20%.