13 results about "Sulfallate" patented technology

The invention discloses a sludge synergistic curing agent based on microbial mineralization and nano-compounding and a preparation method thereof. The sludge synergistic curing agent is prepared from the following components in percentage by mass: 20%-30% of fly ash, 15%-20% of sulphoaluminate cement, 10%-15% of modified phosphogypsum powder, 15%-20% of charcoal loaded nano iron, 5%-10% of attapulgite, 6%-10% of polyaspartic acid-co-acrylamide, 4%-5% of sodium carboxymethyl cellulose, 3%-5% of silica fume, 1%-3% of magnesium carbonate and 1%-2% of tartaric acid. The sludge synergistic curing agent is used for innocent treatment of river dredging sludge and industrial sludge, and rapid dehydration and high-strength curing of sludge and long-acting stabilization of pollutants are realized through synergism of the adsorption performance of the biochar, the reduction stabilization effect of the nano-iron and the cementation effect of a composite gel system.

This invention discloses a fissure grouting material, its preparation method, and its application, belonging to the technical field of radiation protection engineering materials. By mass, its raw materials include: 45-60 parts barite sand, 25-35 parts sulfoaluminate cement, 8-20 parts borax, 2-5 parts boron carbide powder, 1-5 parts nano-gadolinium oxide, 5-15 parts lithium slag powder, 3-8 parts barium sulfate whiskers, 3-8 parts polymer emulsion, 0.5-1.5 parts water-reducing agent, 0.1-0.5 parts stabilizer, and 18-25 parts water. This invention provides high-density gamma-ray shielding through barite sand, achieves all-round neutron protection through a quaternary composite neutron absorption system, enhances the material's toughness and shielding effect through barium sulfate whiskers, and ensures high fluidity and interfacial bonding strength of the grout through the polymer emulsion. This material is particularly suitable for sealing and shielding fissures in the surrounding rock of radioactive tunnels, possessing advantages such as excellent shielding effectiveness, good construction performance, high volume stability, and long-term durability.

The invention relates to a method for recycling copper tailings in a segmented and quality-divided manner, which comprises the following steps: S1, roasting the copper tailings to obtain roasted slag; s2, adding alkali into the roasting slag, dissolving, and filtering to obtain alkali-dissolved filter slag and alkali-dissolved filtrate; s3, adding an acid into the alkali dissolution filtrate for precipitation, and filtering to obtain an acid precipitation precipitate and an acid precipitation filtrate; s4, carrying out refining and hydrothermal reaction on the acid precipitation precipitate to obtain boehmite; and adding potassium salt into the acid precipitation filtrate, and performing evaporative crystallization to obtain potassium sulfate. According to the method, the copper tailings are treated through cooperation of roasting and alkali dissolution, sulphoaluminate can be decomposed, dissolution of sulfur and aluminum elements can be promoted, potassium sulfate and boehmite which are high in additional value are recycled in a segmented and quality-divided mode, and the comprehensive utilization rate of the copper tailings is remarkably increased. In addition, the problem that the building material expands and cracks due to sulfate can be avoided through recovery of the sulfur element in the copper tailings.

The invention discloses a river sediment curing agent as well as a preparation method and application thereof. Comprising 25-32 parts of steel slag micro powder, 16-22 parts of metakaolin, 8-10 parts of modified activated carbon, 3-5 parts of modified straw ash, 3-5 parts of nano calcium carbonate, 5-8 parts of an exciting agent, 3-5 parts of sinking beads, 2-4 parts of nano iron particles, 3-6 parts of chitosan quaternary ammonium salt and 10-15 parts of sulphoaluminate cement clinker. The components of the curing agent provided by the invention realize efficient curing of the river sediment through multi-dimensional synergy of'gelling enhancement-structure densification-pollution fixation-performance adaptation ', so that the mechanical strength, durability and water resistance of a cured body are ensured, pollutants in the sediment can be stabilized, and the construction feasibility and environmental safety are considered at the same time.

The application discloses a kind of based on microbial mineralization and nanocomposite silt synergic curing agent and preparation method thereof.Silt synergic curing agent includes 20%~30% fly ash, 15%~20% sulphoaluminate cement, 10%~15% modified phosphogypsum powder, 15%~20% biochar load nano iron, 5%~10% attapulgite, 6%~10% polyaspartic acid-co-acrylamide, 4%~5% sodium carboxymethyl cellulose, 3%~5% silica fume, 1%~3% magnesium carbonate and 1%~2% tartaric acid by mass percentage.Silt synergic curing agent is used for river dredging silt, harmless treatment of industrial sludge, by the adsorption performance of biochar, the reduction stable effect of nano iron and the cementation effect of composite cementing system synergize, realize the rapid dewatering of silt, high-strength solidification and long-term stabilization of pollutants.

The invention belongs to the technical field of grouting materials, and particularly relates to an intelligent self-sensing and self-repairing sleeve grouting material as well as a preparation method and an application method thereof. The grouting material comprises the following components in parts by weight: a basic cementing material system: 100 parts of P.O52.5 Portland cement, 8-12 parts of sulphoaluminate cement, 15-25 parts of superfine slag powder and 8-12 parts of nano silica fume; the intelligent sensing component system is prepared from 0.8 to 1.5 parts of carboxyl functionalized multi-walled carbon nanotubes, 0.3 to 0.6 part of graphene oxide hydrosol and 0.05 to 0.1 part of a polyacrylamide dispersing agent; the self-repairing component system comprises the following components in parts by weight: 8-12 parts of epoxy resin microcapsules, 3-5 parts of cyanoacrylate microcapsules, 0.01-0.05 part of microbial spores and 0.5-1.0 part of a microbial nutrient solution; the aggregate system comprises the following components in parts by weight: 150-180 parts of quartz sand of 20-40 meshes, 120-150 parts of quartz sand of 40-80 meshes and 50-80 parts of quartz sand of 80-120 meshes; the additive system comprises 3.5 to 4.5 parts of polycarboxylic acid water reducing agent, 10 to 15 parts of UEA expanding agent, 1.2 to 2.0 parts of lithium carbonate early strength agent, 0.5 to 1.2 parts of sodium gluconate retarder, 0.3 to 0.6 part of nano TiO2 photocatalyst and 0.2 to 0.4 part of organic silicon defoaming agent. The invention provides an intelligent self-sensing and self-repairing sleeve grouting material as well as a preparation method and an application method thereof.

The invention relates to the field of building waterproof materials, in particular to a self-healing quick-setting inorganic waterproof plugging material and a preparation method thereof. The material comprises the following raw materials in parts by weight: 80-85 parts of sulphoaluminate cement, 4-6 parts of silica fume, 4-6 parts of mineral powder, 1-2 parts of calcium chloride, 0.5-1 part of lithium carbonate, 0.05-0.1 part of a water reducing agent, 0.07-0.15 part of hydroxypropyl methyl cellulose and 1-2 parts of a self-healing silicon-based activator. The self-healing type silicon-based activating agent is prepared from the following components in parts by weight: 0.9 to 1.2 parts of calcium hydroxide, 0.9 to 1.4 parts of magnesium fluosilicate, 0.3 to 0.5 part of nano active silicon and 1.1 to 1.4 parts of higher fatty acid salt. The material has the characteristics of rapid solidification, efficient self-healing and high impermeability.

The invention discloses a raw material of an alkali-efflorescence-resistant inorganic material, the alkali-efflorescence-resistant inorganic material and a preparation method of the alkali-efflorescence-resistant inorganic material, and relates to the technical field of alkali-efflorescence treatment. The saltpetering-resistant inorganic material is prepared from the following raw materials: sulphoaluminate cement and soluble calcium salt, and the sulphoaluminate cement contains calcium sulphoaluminate and calcium sulfate. According to the technical scheme, sulfate ions, aluminum ions and calcium ions hydrolyzed from the sulphoaluminate cement react to generate ettringite, a large amount of calcium ions are consumed, so that the possibility that free calcium ions migrate to the surface of the material is reduced, surface precipitation can be prevented, the efflorescence resisting effect is achieved, and due to the fact that ettringite further contains a large amount of crystal water, the efflorescence resisting effect is achieved. The migration quantity of water molecules can be obviously reduced, and the needle-like crystals of ettringite can block capillary channels, reduce the moisture migration rate and inhibit ions from seeping out along with water, so that the technical scheme of the invention can also reduce the migration of the water molecules, and is beneficial to further improving the saltpetering and improving the saltpetering resistance durability.

The application relates to a kind of anti-permeation and anti-corrosion grouting materials suitable for chlorine salt environment and a preparation method thereof, and belongs to the field of grouting materials.The grouting material comprises A liquid and B liquid, and the weight ratio of A liquid to B liquid is (8-10):1.A liquid comprises the following components in the following weight proportions: 840 parts of silicate cement clinker, 70-90 parts of sulphoaluminate cement clinker, 70-90 parts of gypsum, 200-300 parts of fly ash, 50-100 parts of silica fume, 10-15 parts of water reducing agent and 3-8 parts of early strength agent.B liquid comprises the following components in the following weight proportions: 15 parts of iron-based layered double hydroxide, 3-3.5 parts of nano-silica sol, 6-7.5 parts of nano-montmorillonite and 0.4-0.6 parts of dispersing agent.The application significantly improves the compactness, anti-permeability and long-term anti-corrosion performance of the grouting material, and is suitable for rapid repair and long-term reinforcement of various chlorine salt environment engineering.

The application discloses a river channel sediment solidifying agent and a preparation method and application thereof, and comprises the following components in parts by weight: 25-32 parts of steel slag micro powder, 16-22 parts of metakaolin, 8-10 parts of modified activated carbon, 3-5 parts of modified straw ash, 3-5 parts of nano calcium carbonate, 5-8 parts of an activator, 3-5 parts of sinking beads, 2-4 parts of nano iron particles, 3-6 parts of chitosan quaternary ammonium salt and 10-15 parts of sulphoaluminate cement clinker. The components of the solidifying agent are synergized in multiple dimensions through 'gelation enhancement-structure densification-pollution fixation-performance adaptation', so that the river channel sediment is efficiently solidified, the mechanical strength, durability and water resistance of the solidified body are ensured, the pollutants in the sediment are stabilized, and the construction feasibility and environmental safety are considered.

The invention belongs to the field of novel mineral inorganic materials, and provides a mineral inorganic high-water-content high-strength closed filling and water plugging material which comprises a material A and a material B. The material A is prepared from the following raw materials in percentage by weight: 65-85% of quick-hardening sulphoaluminate cement, 1-5% of a water reducing agent, 1-5% of a water reducing agent, 1-5% of a water reducing agent and 1-5% of a water reducing agent. 5-15% of Portland cement; 5-15% of a nucleating agent; 0.5-2% of sodium carbonate; 5-10% of sodium aluminate; 0.5 to 2% of bentonite; 1-5% of silica fume; the sum of the percentages of all the raw materials is 100%; the material B is prepared from the following raw materials in percentage by weight: 20-50% of anhydrous calcium sulfate; 15-40% of superfine slag powder; 15-30% of calcium oxide powder; 0.5-2% of sodium sulfate; 0.5 to 2% of bentonite; the sum of the percentages of all the raw materials is 100%; the nucleating agent is prepared by mixing bauxite, sodium carbonate, limestone and kaolin according to the weight ratio of 3: 2: 1: 1 and then calcining. The concrete has the characteristics of simple construction process, low material consumption, high water cement ratio, high compressive strength, high solid water, low calorific value, adjustable and controllable setting time and good pressure-bearing compactness.

The invention relates to an inorganic porous filling material capable of releasing CO2 in situ as well as a preparation method and application thereof, and belongs to the technical field of filling reinforcement. The material takes sulphoaluminate cement, Bayer process red mud and aluminum refining slag as main gelling components. The in-situ slow release of CO2 gas in the gelling structure generation process is realized by introducing bicarbonate and aluminum sulfate salt to induce the interior of the system to generate spontaneous CO2 gas endogenous reaction. Meanwhile, methionine and valine are used as foaming regulation and control auxiliaries, so that a controllable foaming process is realized. According to the preparation method, the inorganic foam cementing material which is uniform in bubble distribution and compact in structure can be obtained under normal-temperature and normal-pressure conditions without an external air source or complex process equipment, and the preparation method is particularly suitable for disaster control and resource utilization of high-risk areas under complex geological conditions.