127 results about "Palygorskite" patented technology

The invention relates to the technical field of cables, and provides a long-life cable for nuclear power, which sequentially comprises a conductor, an insulating layer, a shielding layer and a sheath layer from inside to outside, the sheath layer comprises the following components in parts by weight: 60-70 parts of high-density polyethylene, 12-22 parts of carboxy nitrile rubber, 4-8 parts of a styrene-acrylonitrile copolymer, 0.5-8 parts of a copper metal organic complex, 8-15 parts of palygorskite powder, 2-5 parts of zinc oxide, 0.5-1.3 parts of an antioxidant, 1-3 parts of a plasticizer and 0.2-0.5 part of a vulcanizing agent; the copper metal organic complex comprises copper trifluoromethanesulfonate and copper acetylacetonate in a weight ratio of (1-3): 1. According to the technical scheme, the problem of poor aging resistance of the sheath layer of the nuclear power cable in the prior art is solved.

The invention provides an asphalt mixture based on desulfurized rubber powder-nano palygorskite-steel slag powder composite modification and a preparation method thereof, and aims to solve the technical problem of reducing high and low temperature diseases and water damage of an asphalt pavement while improving the pavement performance of the asphalt mixture. The composite modified asphalt mixture is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 3 to 7 parts of asphalt, 0.05 to 0.10 part of desulfurized rubber powder, 0.06 to 0.18 part of nano palygorskite, 0.03 to 0.07 part of steel slag powder, 0.015 to 0.028 part of improving agent and 0.001 to 0.005 part of coupling agent. The composite modified asphalt mixture provided by the invention has excellent pavement performance, can enhance the high-temperature stability, low-temperature crack resistance, water stability, toughness and ductility of an asphalt pavement, can prolong the service life of the asphalt pavement, and has the advantages of non-toxic and harmless raw materials, wide sources, no pollution in the production process, low price and good economic benefits.

The invention relates to the technical field of water treatment agents, and particularly discloses a composite phosphorus removal material and a preparation method and application thereof. The method comprises the following steps: adding biomass, palygorskite, starch and a first cross-linking agent into water, and carrying out first reaction to obtain a first cross-linked body solution; adjusting the pH value of the first cross-linking body solution to be alkalescent, adding chitosan, a second cross-linking agent and an initiator, carrying out a second reaction, and freeze-drying the obtained solid to obtain a second cross-linking body; and adding the second crosslinking body and a surfactant into a mixed solution containing rare metal salt and inorganic metal salt, stirring and dipping to obtain the composite phosphorus removal material. Biomass, palygorskite and starch are used as main materials of an adsorption carrier, chitosan is grafted to improve the adsorption performance, rare metal salt and inorganic metal salt are used as active components, and the phosphorus removal effect is improved; in the preparation process, a pyrolysis process is not needed, reaction conditions are mild, and the method has the advantages of low carbon, environmental protection, low equipment requirement and low cost.

The invention discloses a soil organic modifier for ecological reconstruction of hardened soil and a preparation method thereof, the soil organic modifier is composed of a biological dry fermentation fertilizer and earthy palygorskite according to a volume ratio of 10-30: 1, and the water content is 25-40%; the biological dry fermentation fertilizer is prepared from livestock manure and a biomass material through anaerobic fermentation, and the biomass material is obtained by modifying sodium aluminosilicate, biochar and ceramsite through an organic matter-hot dipping method. The soil organic modifier prepared by the invention is used for hardened soil, improves soil pores, increases soil organic matters and nutrients, improves the sustainable reproduction environment of soil organisms, realizes optimization of soil physical and chemical properties, improves crop resistance, increases the yield and quality of crops, and reverses the problems of soil hardening and degradation and the like.

The invention discloses a catalyst for hydrogen production through ammonia decomposition as well as a preparation method and application of the catalyst. A catalyst for hydrogen production through ammonia decomposition comprises an attapulgite carrier and an active component loaded on the attapulgite carrier, and the active component is ruthenium and / or nickel. The preparation method has the advantages that the adopted carrier material attapulgite is easy to obtain and low in cost; the natural attapulgite is adopted as a carrier material and is loaded with the active components ruthenium and nickel, the obtained catalyst has excellent catalytic performance in hydrogen production through ammonia decomposition, 100% conversion of ammonia can be achieved only by loading a small amount of active metal components on the attapulgite, and the cost of hydrogen production through ammonia decomposition is greatly reduced; the preparation process of the catalyst is simple, complex chemical reaction and modification treatment are not needed, only the attapulgite and the active component precursor need to be directly impregnated, the preparation process is simplified, and the catalyst is suitable for large-area production.

The invention relates to the technical field of materials, and discloses a rubber-plastic composite material based on ethylene propylene diene monomer and a production process thereof.The composite material is prepared by taking ethylene propylene diene monomer and ethylene-vinyl acetate copolymer as base materials and modified palygorskite functional materials and the like as auxiliary materials through banburying, extrusion and vulcanization foaming processes. Wherein the modified palygorskite functional material is prepared by modifying the surface of palygorskite with a macromolecular polymer formed by alternately connecting methyltrisiloxane-phosphorus derivatives, and the palygorskite can efficiently exert the advantages of serving as an inorganic additive, so that the mechanical strength of the rubber and plastic composite material is improved; the phosphorus element of the macromolecular polymer can promote rapid formation of a compact carbon layer on the surface of the material during combustion, and the silicon element can form silicon oxide to be deposited on the surface of the carbon layer, so that the strength of the carbon layer is improved, the high-strength carbon layer is formed, and the flame retardant property of the rubber and plastic composite material is effectively improved through cooperation with the palygorskite.

The invention belongs to the technical field of biochar immobilized microorganisms, and particularly relates to a preparation method of a biochar-based composite material for efficient immobilization of adaptive microorganisms. The microbial loading capacity is remarkably improved, the chain structure of the attapulgite layer provides a large number of linear adsorption sites, the porous structure of the biochar forms a three-dimensional adsorption space, and the chain structure and the porous structure of the biochar construct a synergistic adsorption mode; when the ammonium ferric citrate is modified, a decomposition product of the ammonium ferric citrate can form new mesopores / micropores in the carrier to enlarge the specific surface area, and the Fe element can be coordinated with an Si-O bond of the attapulgite and a carbon skeleton of the charcoal, so that pore collapse is inhibited, and the cycle stability is improved. And hydroxyl groups on the surface of the attapulgite and oxygen-containing functional groups of the charcoal cooperate with each other, so that electrostatic attraction and hydrogen bond binding force to the microorganisms are enhanced. The microorganism survival microenvironment is optimized, the composite carrier has the ion exchange capacity of the attapulgite and the water and fertilizer retention characteristic of the biochar, and a stable buffer environment and nutrition reserve can be provided for microorganisms.

The invention belongs to the technical field of battery cooling liquid, and particularly relates to new energy automobile power battery cooling liquid and a preparation method thereof. The new energy automobile power battery cooling liquid is prepared from the following raw materials in percentage by mass: 40 to 60 percent of dihydric alcohol, 0.2 to 3 percent of a corrosion inhibitor, 0.1 to 0.5 percent of an antioxidant, 0.1 to 0.5 percent of a pH regulator, 0.01 to 0.05 percent of an anti-foaming agent, 0.005 to 0.015 percent of a nano additive and the balance of ionized water, the nano additive comprises an ionic flaky nano mineral, nano palygorskite and nano diamond in a mass ratio of (3-5): (0.1-0.5): (0.1-0.5). The new energy automobile power battery cooling liquid has good low dielectric constant, high thermal conductivity and good storage stability.

The invention discloses a thickening suspending agent containing modified attapulgite and application of the thickening suspending agent, and belongs to the technical field of thickening suspending agents. After acidification treatment, the content of impurities on the surface of attapulgite is reduced, the surface area and the porous property are increased, the load rate of zero-valent iron can be increased, and the utilization rate of the zero-valent iron is increased. Zero-valent iron is uniformly loaded on tubular pore channels or the surface of attapulgite in the form of nano-particles, so that the surface roughness of the composite powder is increased, stronger steric hindrance can be formed around pesticide particles, and the pesticide particles are prevented from being gathered and enlarged due to collision, so that sedimentation is reduced, and the composite powder has good suspension property and dispersity; the load of zero-valent iron can endow the thickening suspending agent with the heavy metal chelating capability; through two times of intercalation treatment, the modified zero-valent iron composite attapulgite powder can be uniformly loaded between graphene oxide layers, the graphene oxide can assist the dispersion of the attapulgite to avoid agglomeration, and the existence of the graphene oxide can improve the thermal stability of the thickening suspending agent.

The invention relates to the technical field of flame retardance, and particularly discloses a composite flame-retardant material and a preparation method thereof. The composite flame-retardant material is prepared from the following raw materials in parts by mass: 15-20 parts of an ethylene-vinyl acetate copolymer, 5-10 parts of high-density polyethylene, 8-10 parts of a thermoplastic polyurethane elastomer, 5-10 parts of palygorskite fibers, 5-10 parts of diatomite, 1-3 parts of carbon nanotubes, 10-15 parts of modified pentaerythritol, 20-30 parts of an acid source-nitrogen source compound and 1-2 parts of cerium oxide. 3-5 parts by mass of polyethylene grafted glycidyl methacrylate and 1-2 parts by mass of silicone master batch. The composite flame-retardant material prepared by the invention has better mechanical property and flame-retardant property.

The invention belongs to the field of ceramic preparation, and particularly relates to bone china with high thermal shock resistance and a preparation method thereof. In order to solve the problem of insufficient thermal shock resistance of bone china in the prior art, the invention provides the bone china with high thermal shock resistance and the preparation method thereof, and the bone china adopts a three-layer gradient structure design and comprises a matrix layer, a middle transition layer and a surface compact layer. The matrix layer contains hydroxyapatite, bone ash, modified palygorskite, a fluxing agent and kaolin, the middle transition layer adopts anorthite and beta-tricalcium phosphate, and the surface compact layer is composed of ZrO2 and SiO2. The structure is optimized through segmented sintering and laser treatment, thermal stress concentration is remarkably reduced, and meanwhile excellent mechanical strength is guaranteed.

The invention belongs to the technical field of soil conditioners, and particularly relates to a silicon-calcium-potassium-magnesium type soil conditioner and a preparation method thereof. The preparation method comprises the following steps: S1, adding quick lime into a sodium silicate solution to react, separating and drying to obtain calcium silicate with the water content of 0-80%; s2, uniformly mixing calcium silicate, magnesium salt / molecular sieve / modified cellulose and potassium salt / modified chitosan to obtain a mixture; and S3, spraying an alcoholic solution containing alkyl quaternary ammonium salt modified palygorskite on the mixture, stirring, and drying to obtain the product. The silicon-calcium-potassium-magnesium type soil conditioner disclosed by the invention can meet the index requirements of the national standard GB / T 36207-2018 'Silicon-calcium-potassium-magnesium Fertilizer', has good slow release effect and storage stability, improves the pH value of acid soil, and increases the content of organic matters in the soil.

The invention relates to the technical field of casting, in particular to a water-soluble salt core for aluminum castings and an injection molding preparation process thereof.The water-soluble salt core is composed of a heterogeneous layered composite material system, and the heterogeneous layered composite material system comprises an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate and used as a base material, the nano palygorskite fiber is used as a reinforcing phase; the functional layer formed by the polyvinyl alcohol film is wrapped on the outer layer; and sodium bicarbonate; according to the water-soluble salt core for the aluminum casting and the preparation technology of the water-soluble salt core, through the improved raw material formula and the innovative preparation technology, the defects in the prior art are effectively overcome. In the aspect of a raw material formula, an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate which are mixed in a specific proportion is used as a base material, and the eutectic mixture has good chemical stability and thermal stability and can provide basic strength and forming performance for the water-soluble salt core.

The invention belongs to the technical field of water guide materials, and particularly discloses a preparation method of a palygorskite-polyacrylamide water seepage rate self-adjusting water guide material. The preparation method is used for solving the problems that a montmorillonite-polyacrylamide water guide material is poor in water blocking effect when the water content of soil is relatively high and is weak in water seepage rate response when the soil humidity fluctuates. Comprising the following steps: firstly, mixing palygorskite clay powder and distilled water to prepare a palygorskite aqueous solution, and mixing nonionic polyacrylamide particles and distilled water to prepare a polyacrylamide aqueous solution; then, the palygorskite aqueous solution and the polyacrylamide aqueous solution are stirred at the constant temperature for 30 min and then mixed, the mixed solution continues to be stirred at the constant temperature for 40 min, and palygorskite-polyacrylamide water guiding material slurry is obtained; and finally, drying the palygorskite-polyacrylamide water guide material slurry, so as to obtain the palygorskite-polyacrylamide water guide material. The water blocking effect of the water guiding material is improved when the soil humidity is high.

The invention discloses a method for preparing ceramsite from hazardous waste zinc-nickel-containing sludge and kyanite flotation tailings and a product thereof, and the method comprises the following steps: uniformly mixing fine-grain zinc-nickel-containing sludge, kyanite flotation tailings and palygorskite mineral powder, grinding at a high speed, mixing and stirring with water, and performing low-temperature plasma irradiation treatment to obtain the ceramsite. After the reaction is finished, granulating and drying to obtain raw material balls; sintering under an air atmosphere condition, and cooling to obtain the ceramsite. According to the method, a method of combining high-speed grinding, low-temperature plasma irradiation and sintering is adopted, collaborative recycling and harmless treatment of hazardous waste zinc-nickel-containing sludge and common solid waste kyanite flotation tailings are achieved, and the obtained ceramsite has no dangerous characteristic and has high strength. The method not only eliminates environmental risks of hazardous waste heavy metal sludge and common solid waste kyanite flotation tailings, but also converts the hazardous waste heavy metal sludge and the common solid waste kyanite flotation tailings into available building materials, and has environmental and economic dual benefits.

The present invention relates to the field of cable technology and proposes a long-life cable for nuclear power use. The cable comprises, from the inside out, a conductor, an insulation layer, a shielding layer, and a sheath layer. The sheath layer comprises the following components by weight: 60-70 parts high-density polyethylene, 12-22 parts carboxylated nitrile rubber, 4-8 parts styrene-acrylonitrile copolymer, 0.5-8 parts copper-based metal organic complex, 8-15 parts palygorskite powder, 2-5 parts zinc oxide, 0.5-1.3 parts antioxidant, 1-3 parts plasticizer, and 0.2-0.5 parts vulcanizing agent. The copper-based metal organic complex comprises copper trifluoromethanesulfonate and copper acetylacetonate in a weight ratio of 1-3:1. This technical solution solves the problem of poor aging resistance of sheath layers in nuclear power cables in the related art.

The application belongs to the technical field of soil improver, and particularly relates to a silicon-calcium-potassium-magnesium type soil improver and a preparation method thereof. The preparation method comprises the following steps: S1, adding quicklime into a sodium silicate solution to perform a reaction, separating, and drying to obtain calcium silicate with a water content of 0-80%; S2, uniformly mixing the calcium silicate, a magnesium salt / molecular sieve / modified cellulose, and a potassium salt / modified chitosan to obtain a mixture; and S3, spraying an alcohol solution containing alkyl quaternary ammonium salt modified palygorskite on the mixture, stirring, and drying to obtain the silicon-calcium-potassium-magnesium type soil improver. The silicon-calcium-potassium-magnesium type soil improver can meet the index requirements of the national standard GB / T 36207-2018 'Silicon-calcium-potassium-magnesium type fertilizer', and has good slow-release effect, storage stability, can improve the pH of acidic soil, and can increase the organic matter content of soil.

The invention relates to the technical field of road engineering construction, and particularly discloses a ceramic tile adhesive as well as a preparation method and application thereof. The ceramic tile binder comprises sulphoaluminate cement, gypsum, aggregate, rubber powder, a polymer emulsion, an inorganic additive, a waterproof agent, a water reducing agent, a defoaming agent and an air entraining agent, wherein the inorganic additive comprises palygorskite powder, microcrystalline glass powder, calcium formate and calcium nitrite; the polymer emulsion comprises a water-based acrylate emulsion and an ethylene-vinyl acetate copolymer emulsion. The ceramic tile binder has good water resistance, excellent bonding performance and low temperature resistance, the problems that an existing ceramic tile binder is poor in water resistance, low in bonding strength and poor in low temperature resistance are effectively solved, and a new design thought is provided for design of the ceramic tile binder.

The application provides a palygorskite-based magnesium silicate anthraquinone regenerative catalyst and a preparation method thereof, the chemical formula of the anthraquinone regenerative catalyst is Mg4Si6O15(OH)2·6H2O, and the preparation method comprises the following steps: (1) obtaining a palygorskite-based SiO2 precursor through hydrothermal acidification of palygorskite; (2) uniformly mixing the palygorskite-based SiO2 precursor, an ammonium salt, a magnesium salt and ammonia water through ultrasonic mixing; and (3) transferring the mixed solution to a hydrothermal kettle to generate palygorskite-based magnesium silicate through hydrothermal reaction. The application takes palygorskite as a silicon source and a template, has the advantages of wide raw material source, simple preparation process, low production cost, green environmental protection and convenience for industrialized production, etc. The palygorskite-based magnesium silicate prepared by the application can be used as a solid alkali catalyst, and has the advantages of non-toxicity, environmental protection, high catalytic activity, long service life and the like.

The present invention discloses a double-crosslinked thermal phase transition gel temporary plugging agent and an application thereof, and relates to the technical field of oil and gas field development. The gel temporary plugging agent comprises the following components in percentage by weight: 5.8-18.3% of acrylic acid, 2.8-6.5% of 2-acrylamide-2-methylpropanesulfonic acid, 2.8-7.0% of hydroxyethyl acrylate, 0.2-1.0% of a degradable crosslinking agent, 0.4-1.2% of borax or boric acid, 0.2-0.8% of a high-temperature initiator, 2.6-4.5% of palygorskite attapulgite, 1.5-3.1% of a urea-formaldehyde resin, and the balance of water, wherein the gel temporary plugging agent is formed by underground gelation. The gel temporary plugging agent is applied to oil and gas reservoirs with a temperature of 100-150° C., can automatically be subjected to gelation and degradation, and has a low filtration loss before gelation.

This invention belongs to the field of building materials technology. Specifically, it discloses a glaze for preventing ceramic tile deformation and an anti-deformation ceramic tile, comprising the following raw materials in parts by weight: 15-30 parts spodumene, 15-30 parts calcite, 12-20 parts bauxite, 8-15 parts pyrophyllite, 6-12 parts modified magnesium borate whiskers, 5-9 parts wet-process mica powder, 3-6 parts palygorskite, 1-2.5 parts calcium borate, 1-2 parts tricalcium silicate, and 0.2-0.7 parts ammonium fluoride. The system of this invention uses spodumene, calcite, bauxite, and pyrophyllite as the matrix minerals, effectively lowering the sintering temperature and providing basic strength to the system. At a lower firing temperature, a high degree of sintering of the glaze layer can be ensured, preventing sintering failure of other materials. By adding modified magnesium borate whiskers and wet-process mica powder, the flexural strength is effectively improved.

The application discloses a method for preparing ceramsite by using hazardous waste zinc-nickel-containing sludge and kyanite flotation tailings and a product thereof, and the method comprises the following steps: uniformly mixing fine-grained zinc-nickel-containing sludge, kyanite flotation tailings and palygorskite ore powder, mixing and stirring the mixture with water after high-speed grinding, and performing low-temperature plasma irradiation treatment; after the reaction is completed, the mixture is granulated and dried to obtain green balls; sintering is performed under an air atmosphere, and the ceramsite is obtained after cooling. The method combining high-speed grinding, low-temperature plasma irradiation and sintering is adopted, the hazardous waste zinc-nickel-containing sludge and the general solid waste kyanite flotation tailings are simultaneously recycled and harmlessly disposed, the obtained ceramsite has no hazardous characteristics and has high strength. The application not only eliminates the environmental risks of the hazardous waste heavy metal sludge and the general solid waste kyanite flotation tailings, but also converts the hazardous waste heavy metal sludge and the general solid waste kyanite flotation tailings into usable building materials, and has double benefits of environment and economy.

The invention relates to the technical field of high polymer materials, in particular to a coating film capable of ensuring the super-hydrophobicity of a product and meeting the cleaning performance of the product. Therefore, the invention provides the bionic super-hydrophobic degerming film for the surface of the household paving material, and the bionic super-hydrophobic degerming film is applied to the super-hydrophobic modified layer with the concave micro-nano structure; the method is specially used in cooperation with a bionic super-hydrophobic layer. The membrane is prepared from palygorskite nanofibers, silicon dioxide nanoparticles, silane-polyurethane resin, tannic acid and titanium dioxide nanoparticles. Compared with the prior art, the bionic super-hydrophobic degerming film for the surface of the household paving material and the preparation method thereof have the advantages that the mass ratio of the solid component to the liquid component is kept balanced, so that mixing and coating are facilitated. Meanwhile, the proportion gives consideration to multiple functions such as mechanical property, chemical stability, antibacterial property and photocatalytic activity of the material.

The invention discloses an efficient activation device and method for palygorskite, and belongs to the technical field of palygorskite activation. The device comprises a rack, an outer barrel is fixedly mounted on the rack, an inner barrel is arranged in the outer barrel, and a driving frame is rotationally mounted on the rack; the driving frame comprises two driving wheels located on the left side and the right side of the outer barrel respectively, one end of the rubber sleeve is connected with one end of the inner barrel, and the other end of the rubber sleeve is connected to an opening of the driving wheel. The eccentric ring is arranged on the driving wheel in a sliding manner; a partition assembly is arranged in the inner barrel in a sliding mode and divides an inner cavity of the inner barrel into a coarse grinding cavity on the left side and a fine grinding cavity on the right side. The efficient activation device and method for the palygorskite have the beneficial effects that through the arrangement of the driving frame and the inner barrel, raw materials not only roll in the inner barrel, but also move left and right along the inner barrel, so that the materials and grinding balls can move more sufficiently, and the problem that the materials or the grinding balls are concentrated is effectively avoided.

The application discloses a targeted magnetic nano-composite of palygorskite, a preparation method and application thereof in preparation of an in-vitro drug controlled release medicine. In the application, an anti-tumor drug DOX is loaded through an acid-cleavable acylhydrazone bond, and the drug release rate is lower in a normal physiological environment and higher in a tumor acid environment compared with electrostatic adsorption and pore storage of the DOX with HPal, so that the drug controlled release performance is obviously improved. In addition, loading of magnetic Fe3O4 nanoparticles and grafting of FA enrich the means of transporting the DOX to a designated area by the carrier, that is, the tumor cells can be positioned by external magnetic field control or receptor-ligand interaction targeting. MTT analysis and cell uptake research prove the targeting effect of the FA, and the therapeutic effect of the DOX can be effectively improved.

The invention provides a nano ceramic coating which is composed of a metal oxide with aluminum oxide as a base material, silicon dioxide and palygorskite, the addition amount of the palygorskite is 11.5-17.3 wt%, and the weight ratio of the silicon dioxide to the palygorskite is (1.1-1.3): 1; the preparation method comprises the following steps: forming a coating from mixed powder of the metal oxide, the silicon dioxide and the palygorskite by a flame spraying method, spraying water, standing, and carrying out heat treatment to form the coating with the porosity of less than 1%. When the nano ceramic coating is applied, the nano ceramic coating is sprayed on the surface of a to-be-protected base material to form a coating with the porosity lower than 1%, and external corrosive components are prevented from making contact with the base material through pores.

The invention relates to the technical field of functional paper and food packaging, in particular to a preparation method of fluoride-free degradable oil-proof packaging paper. The preparation method comprises the following steps: (1) preparing polydopamine modified palygorskite particles; (2) uniformly dispersing the polydopamine modified palygorskite in a solution containing glycerol or emulsified silicone oil and glutaraldehyde to obtain a coating A; (3) preparing a chitosan solution as a coating B; and (4) selecting different paper sheets, firstly dipping the paper sheets in the coating A solution, then dipping the paper sheets in the coating B solution after drying, and obtaining the fluoride-free degradable oil-proof paper after drying. The oil-proof packaging paper prepared by the preparation method has the advantages that the normal-temperature and high-temperature oil-proof performance is improved, the mechanical property and the barrier property are excellent, the application range of the oil-proof paper is expanded, and the service cycle is prolonged.

The application is a divisional application of 2022109403727. The application discloses a palygorskite-based mineralized water agent, which has a core-shell structure, and the content of the core is 75-90 wt%, wherein the core is a particle composed of the following components: palygorskite, lithia tourmaline, medical stone, serpentine, wood fish stone, hexacyclic stone and montmorillonite; the shell is composed of the following components: hydroxyapatite, tyrosine and methionine. Compared with the prior art, the mineralized water agent can not only increase beneficial substances such as strontium, selenium, zinc and lithium in drinking water, but also reduce fluorine, iron and manganese.

The invention discloses mining and metallurgy solid waste-based shrinkage-compensating freeze-thaw-resistant concrete and a preparation method thereof, and belongs to the technical field of building materials. The freeze-thaw resistant concrete is prepared from the following components in parts by weight: 300 to 400 parts of cement, 150 to 200 parts of mineral admixture, 10 to 20 parts of expanding agent, 10 to 15 parts of granular foam stabilizer, 600 to 700 parts of fine aggregate, 1000 to 1300 parts of coarse aggregate and 4.5 to 12 parts of air-entraining type water reducing agent, the granular foam stabilizer is prepared from nano SiO2, palygorskite whiskers and cellulose ether. The concrete disclosed by the invention has better mechanical property and freezing resistance while ensuring good volume stability, meets the durability requirement on the concrete in the salt freezing environment in the northeast region, and can be used in long-life projects in the service environment.

According to the production method and equipment for manufacturing the unfired ceramsite by utilizing the attapulgite, the cement provides basic strength support, the acidified attapulgite clay interacts with the cement and other materials, the internal structural stability of the ceramsite is enhanced, meanwhile, the overall strength of the ceramsite is further improved by adding the reinforcing agent, and the ceramsite has the advantages that the strength of the ceramsite is improved, and the service life of the ceramsite is prolonged. The requirements on the material strength in the fields of sewage treatment, constructed wetlands and the like can be met; the used disc granulator adopts a double-disc structure of an inner disc and an outer disc, the inner disc is used for granulation, the outer disc is used for shape adjustment, and the inner disc and the outer disc act together, so that the final ceramsite is very round in shape, the quality of finished products is greatly improved, continuous and uninterrupted granulation operation can be performed due to the stacked design of the inner disc and the outer disc, and the working efficiency is very high.