12 results about "Magnesium fluorosilicate" patented technology

Cement-based retarding mortar test mold and preparation method thereof, relate to the technical field of retarding mortar test mold, and particularly relate to a cement-based retarding mortar test mold and a preparation method thereof.The cement-based retarding mortar test mold comprises a test mold main body, the test mold main body is a cement-based test mold, the compressive strength value is 155-170 MPa, and a test groove is arranged in the test mold main body; the inner surface of the test groove is sprayed with a composite aqueous solution of sodium silicate, magnesium fluorosilicate and potassium fluorosilicate for surface treatment, and the spraying ratio is that the mass ratio of sodium silicate, magnesium fluorosilicate, potassium fluorosilicate and deionized water is (2.9-3.1) :(1.9-2.1) :(0.9-1.1) :(3.9-4.1). The cement-based retarding mortar test mold has the positive effect that the test data in a laboratory can be matched with the field construction data, and production enterprises can adjust the mixing ratio in time according to the field construction to improve the engineering quality.

The invention relates to the technical field of magnesium fluosilicate production, in particular to a preparation method of magnesium fluosilicate for a concrete hardener, which comprises the following steps: adding a magnesium-containing compound into a fluosilicic acid solution to obtain a mixed solution; when it is judged that the preparation of the mixed solution does not meet the preset standard according to the turbidity gradient of the mixed solution, the preset adding rate is reduced; adding an impurity removal agent into the mixed solution meeting the preset standard, stirring, standing, precipitating and filtering to obtain magnesium fluosilicate filtrate; concentrating the magnesium fluosilicate filtrate until crystals are separated out to obtain magnesium fluosilicate crystal slurry; judging whether the preparation of the magnesium fluosilicate crystal slurry meets a preset standard or not according to the gray value variance; and carrying out centrifugal separation on the magnesium fluosilicate crystal slurry meeting the preset standard to obtain wet magnesium fluosilicate crystals, and drying the wet magnesium fluosilicate crystals to obtain a magnesium fluosilicate product. The preparation efficiency of the magnesium fluosilicate is improved.

The invention relates to the field of building waterproof materials, in particular to a dynamic crystallization-based mass concrete temperature-inhibiting anti-cracking intelligent waterproof agent and a preparation method thereof. The waterproof agent comprises a temperature-inhibiting component and a temperature-inhibiting component, wherein the temperature-inhibiting component comprises 0.2-0.5 part of citric acid, 0.3-0.4 part of tartaric acid, 1.2-1.9 parts of S105 high-activity superfine mineral powder and 0.07-0.09 part of sodium gluconate; an expansion anti-cracking component: 0.1 part of calcium sulphoaluminate, 0.01 part of modified calcium oxide and 0.06-0.08 part of light magnesium oxide; the dynamic crystallization component comprises 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 sodium silicate. The invention relates to the field of building waterproof materials, in particular to a dynamic crystallization-based mass concrete temperature-inhibiting and crack-resisting intelligent waterproof agent and a preparation method thereof, and the technical problems of temperature inhibition, crack resistance and waterproof repair of mass concrete are solved through synergistic interaction of all the components of the dynamic crystallization-based mass concrete temperature-inhibiting and crack-resisting intelligent waterproof agent. The waterproof agent comprises a temperature-inhibiting component and a temperature-inhibiting component, wherein the temperature-inhibiting component comprises 0.2-0.5 part of citric acid, 0.3-0.4 part of tartaric acid, 1.2-1.9 parts of S105 high-activity superfine mineral powder and 0.07-0.09 part of sodium gluconate; an expansion anti-cracking component: 0.1 part of calcium sulphoaluminate, 0.01 part of modified calcium oxide and 0.06-0.08 part of light magnesium oxide; the dynamic crystallization component comprises 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 sodium silicate. All the components have a synergistic effect, and the technical problems of temperature inhibition, crack resistance and waterproof repair of mass concrete are solved.

The application discloses a lead storage battery positive plate and a lead storage battery and belongs to the technical field of lead storage batteries. The lead storage battery positive plate comprises a positive plate grid and positive lead paste coated on the positive plate grid, and the composition of the positive lead paste comprises lead powder, a sulfuric acid solution, pure water and an additive; the additive comprises a magnesium fluorosilicate solution. In the process of positive formula lead powder paste preparation, pure water and the prepared magnesium fluorosilicate solution are added to the mixed dry powder for wet mixing, and then a sulfuric acid solution is added to prepare the positive lead paste of the lead storage battery. The positive plate provided by the application has the characteristics of strong active material binding force, high temperature resistance and crack resistance, can improve the conductivity, long-life cycle charging and discharging characteristics and the like of the battery, has certain inhibiting effect on preventing early mudification and decomposition of active materials and active material shedding in the later period of the battery, and the charging and discharging efficiency of the battery is improved by more than 2.2%, and the service cycle life of the battery is improved by more than 8%.

The present application relates to white cement admixture technical field, specifically to a kind of composite liquid early strength agent of white Portland cement, including the following weight parts of raw material, reinforcing component 30~40 parts, auxiliary solubilization stabilizing component 5~10 parts and carrier 50~65 parts, the total part of the composite liquid early strength agent is 100 parts, the reinforcing component is organic salt, inorganic salt reinforcing agent, the organic salt, inorganic salt reinforcing agent includes sodium oxalate, sodium carbonate and magnesium fluorosilicate, the auxiliary solubilization stabilizing component is the mixture of lignosulfonate and polyglycerol, the lignosulfonate is sodium lignosulfonate, and the polyglycerol is triglycerol, the composite liquid admixture of the present application, environmental friendly, preparation process is simple, improve white cement early (3d) strength 10%~15%, save white cement product curing time and improve formwork turnover rate.

The present application relates to a kind of fluorine-containing alkali-free liquid accelerator and its preparation method and application, it includes the following weight parts components: aluminum sulfate 48-52 parts, magnesium fluorosilicate 7-9 parts, diethanolamine 10-11 parts, composite flocculant 0.91-1.15 parts, oxalic acid 1-3 parts, ethylenediaminetetraacetic acid 1-3 parts, water 20.85-32.09 parts.Preparation method is as follows: (1) aluminum sulfate is added to water, heating, stirring to dissolve;Subsequently, magnesium fluorosilicate is added, stirring to dissolve;(2) composite flocculant and diethanolamine are sequentially added according to weight fraction, continuous stirring;(3) oxalic acid and ethylenediaminetetraacetic acid are added, stirring to liquid clear after natural cooling, obtain the final fluorine-containing alkali-free liquid accelerator.Compared with prior art, the fluorine-containing alkali-free liquid accelerator of the present application improves the solubility of aluminum sulfate, solution stability, rapid setting effect, and significantly reduces the rebound rate of shotcrete.

The invention relates to the technical field of concrete, and discloses stone saw mud and steel slag synergistically regenerated marine concrete and a preparation method thereof. The concrete is prepared from sulfate-resistant portland cement, silica fume, fine aggregate, coarse aggregate, calcium formate, a polycarboxylic acid water reducer, supplementary mixing water and modified precursor slurry, and the modified precursor slurry is prepared from wet stone sawing mud, superfine steel slag powder, magnesium fluosilicate, sodium hexametaphosphate and sodium metaaluminate. The preparation method comprises the following steps: firstly, carrying out dry mixing on the aggregate, the cement, the silica fume and the calcium formate to obtain a solid dry mixture, then adding the modified precursor slurry and the supplementary mixing water dissolved with the water reducing agent, carrying out wet mixing, and pouring and curing until the color of the materials is uniform. The modified precursor slurry is prepared, magnesium fluosilicate is used for etching particle surfaces, and sodium metaaluminate is used for polycondensation to generate an active layer, so that the reaction activity of the stone saw mud and the steel slag is improved, the compactness of the concrete is increased, and the capability of resisting corrosion of chloride ions and sulfate ions is improved.

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 relates to the technical field of building material admixtures, in particular to a preparation method of a high-early-strength alkali-free accelerator, which comprises the following steps: basalt fiber pretreatment: soaking 3-5 parts of basalt fiber in acetone for 2 hours, taking out, washing with absolute ethyl alcohol, and drying for later use; preparing slurry: mixing 10 parts of light calcined magnesia with the purity not lower than 90% with water according to the mass ratio of 1: 1, and adding the mixture into the reaction kettle; starting a stirrer of the reaction kettle, and slowly dropwise adding 100 parts of fluosilicic acid with the concentration of 10-20% into the reaction kettle to generate an active component taking magnesium fluosilicate as a main component, so as to obtain a solution A; mixing and dissolving 40-50 parts of aluminum sulfate and water according to the mass ratio of 1: 1, and slowly adding the aluminum sulfate solution into the solution A under continuous stirring to obtain a solution B; 3-5 parts of pretreated basalt fibers are added into the solution B, then 1-2 parts of polyacrylamide and 3-5 parts of triethanolamine are sequentially added, and finally the alkali-free liquid accelerator product is obtained.

This invention proposes an alkali-free liquid accelerator for shotcrete and its preparation method, belonging to the technical field of accelerators. It is prepared from the following raw materials in parts by weight: 12-15 parts magnesium fluorosilicate, 3-5 parts hydrogen fluoride, 5-7 parts aluminum hydroxide, 20-30 parts aluminum sulfate, 3-5 parts organic alcohol amine carboxylic acid polymer, 2-3 parts organic acid, 1-2 parts polyacrylamide, and 20-30 parts water. The alkali-free liquid accelerator for shotcrete prepared by this invention has advantages such as low corrosiveness to the human body, high early strength and high later compressive strength ratio, no adverse effect on concrete durability, and the thickening components can reduce dust concentration and rebound during the spraying process. Furthermore, it has advantages such as low dosage, economical price, good stability, and significant accelerator effect.

The invention discloses a high-wear-resistance and corrosion-resistance cement-based floor material and application thereof, and belongs to the technical field of building materials. The floor material is prepared from the following components in parts by weight: 38 to 45 parts of Portland cement, 5 to 8 parts of sulphoaluminate cement, 8 to 12 parts of gypsum, 13 to 16 parts of mineral powder, 5 to 8 parts of silica fume, 15 to 18 parts of quartz powder, 100 to 120 parts of modified wear-resistant aggregate, 2 to 4 parts of corrosion inhibitor, 7 to 14 parts of modified steel fiber, 15 to 20 parts of water and 1 to 3 parts of water reducing agent, wherein the modified wear-resistant aggregate is subjected to surface modification through glaze; the corrosion inhibitor comprises sodium metasilicate, lithium water glass and magnesium fluosilicate; the modified steel fiber is subjected to surface modification through sodium metasilicate. The terrace material has high strength, high wear resistance and good acid and alkali resistance, is environment-friendly and pollution-free, and can be used in heavy-load service ground environments such as environmental protection factories, garbage treatment plants, warehouse logistics, parking lots and chemical workshops.

The application discloses a method for reducing the content of fluosilicic acid in magnesium fluosilicate product, comprising the following steps: 1) analyzing and detecting the content of fluosilicic acid in magnesium fluosilicate crystals; 2) dissolving the magnesium fluosilicate crystals in a saturated magnesium fluosilicate solution to prepare a magnesium fluosilicate solution; and 3) adding a magnesium hydroxide solution into the magnesium fluosilicate solution in a magnesium fluosilicate cooling crystallization tank, and after sufficient reaction, the magnesium fluosilicate is obtained through cooling crystallization, centrifugal separation and drying; the method can reduce the content of fluosilicic acid in the finished product magnesium fluosilicate, and meanwhile, no new impurities are introduced.