50results about How to "Stimulate latent activity" patented technology

The invention relates to a method for preparing a cement mixture from waste phosphorus dregs through a wet-milling method. The method comprises the steps of crushing the waste phosphorus dregs, salic industrial wastes and industrial by-product gypsums with an excitation function in a crushing machine to 2 to 20mm, and powder milling in a ball mill through a wet method; feeding 0.5 to 0.6 percent of water and doping 0.1 to 0.2 percent of water reducing agent into a mixing tank, stirring through an electric stirrer, then adding 40 to 65 parts of phosphorus slags and 32 to 50 parts of salic industrial wastes for stirring, finally adding the industrial by-product gypsums with the excitation function for continuously stirring, and obtaining a liquid slurry; and pumping into the vertical ball mill, wet-milling to below 10 mum, and preparing the slurry cement mixture. According to the method for preparing the cement mixture from the waste phosphorus dregs through the wet-milling method provided by the invention, the phosphorus dregs, the salic materials and the industrial wastes are adopted as raw materials, and the water reducing agent is added for wet-milling, so that the materials are activated without doping an exciting agent; and the method is simple in operation process, has no need to dry solid wastes, and is energy-saving and environmental-friendly, and good in economic efficiency.

The invention relates to a liquid cement grinding-assisting reinforcing agent and a production method thereof, particularly to a high-efficient liquid compound non-chlorinated and low alkali cement grinding-assisting reinforcing agent of a defoaming mechanism and cement stability performance and a production method thereof. Pulp waste liquid is used as main material which is in complexation with triethanolamine and polyol and added with small amount of stabilizers of phosphogypsum and aluminum sulfate, etc., to eliminate the harm of free state CaO, and ethal etc. is added to play a role of defoaming, thereby the stability and density of the cement is enhanced and the intensity of the cement is further enhanced. The production method is to separate grinding-assisting reinforcing ingredient and additive ingredient respectively and averagely which are then stirred and mixed. In addition to simple technique and low price, the product is easy for storage and transportation, which occupies little cement mixed weight, obviously enhances the early and later period intensity of the cement and is extremely applicable to wide application in cement industry.

The invention discloses a fly ash activator, relates to the technical field of materials for improving fly ash activity, and specifically relates to a fly ash activator. The fly ash activator is prepared by homogenizing and stirring the following raw materials in parts by weight: 10 to 30 parts of alum stone, 10 to 20 parts of anhydrous sodium sulphate, 10 to 20 parts of calcium chloride, 10 to 20 parts of sodium hydroxide, and the balance being fly ash or stone flour. The fly ash activator can effectively activate the potential activity of fly ash, increases the addition amount of fly ash, and reduces the amount of cement in concrete. The cost of the activator is maximally reduced at the same time. The fly ash activator can increase the economic profits and social profits of the industry of concrete and products thereof on the basis that the technical effect is not affected, and can realize the energy saving and emission reduction at the same time.

The invention relates to a cement admixture, in particular to a powdery compound cement grinding aid and a preparation method thereof. The invention solves the problems of bottleneck effect in the reactions among various cement components in the prior cement grinding aid, poor effect of enhancing cement properties in various aspects, and the like. The powdery compound cement grinding aid is prepared from a liquid part and a powder part, wherein the liquid part is prepared from triethanolamine, cocoanut oil diethan olamide, potassium dichromate, sodium nitrite, sodium hexametaphosphate, an SM naphthalene water-reducing agent and the like; and the powder part is prepared from alunite powder, sodium acetate, iron vitriol, sodium thiosulfate, limestone powder and the like. The powdery compound cement grinding aid can provide an intermediate platform for the reactions among various cement components, so that the components in the cement produce mutual compound cooperation and superimposition effects, thereby effectively exciting the lateral reactivities of the components, enabling the components to perform the respective grind aiding functions in the powder grinding process, effectively eliminating the phenomena of ball paste and heavy grinding, increasing the specific area of the cement and the production output per hour of the cement grinder and greatly enhancing the rupture strength and the compression strength of the cement.

The invention discloses an ecotype full-regeneration rapid repair concrete which is characterized in that the concrete is prepared by the following components in parts by weight: 310-400 parts of cement, 20-60 parts of metakaolin, 40-90 parts of regeneration powder, 40-80 parts of rapid repairing agent, 1050-1200 parts of regeneration coarse aggregate, 520-600 parts of regeneration fine aggregate, 5-10 parts of polycarboxylic acid water reducer and 170-220 parts of water. The ecotype full-regeneration rapid repair concrete has the advantages that waste materials are sufficiently used, energy reduction and environmental protection are achieved, the traffic is opened as soon as possible, and the cost is low.

The invention relates to a cement additive, in particular to liquid composite cement grinding aid and a preparation method thereof, which solve the problems of bottleneck effect occurring in reactions among various components in cement caused by conventional cement grinding aid, poor effect in improving performance of each aspect of the cement and the like. The grinding aid is prepared from coconut oil diethan olamide, water, acetic acid, melamine, sodium nitrite, sodium acetate, sodium thiosulfate, molasses, sodium hexametaphosphate, calcium lignosulfonate and soap, can provide an intermediate platform for reactions among the components in the cement to ensure that the components in the cement can generate compound synergy and additive effects with one another, and more effectively excites potential activity of raw material components, thereby receiving sufficient reactions to play respective grinding aid effect in a powder grinding process, effectively eliminating ball stick and over grinding phenomena, improving the specific surface area of the cement, and simultaneously improving the machine-hour output of a cement mill; and the product which is added with 0.1 weight percent of cement can improve the 3-day strength of the cement by 4 to 7MPa, and improve the 28-day strength of the cement by 3 to 6MPa.

The invention discloses silicate cement prepared from solid wastes and a preparation method of the silicate cement and belongs to the technical field of building materials. The silicate cement is prepared from the raw materials: clinkers, gypsum, slag, tailings and building wastes by adding a chemical excitant. The silicate cement is prepared from the following raw materials in percentage by weight: 40-60% of clinkers, 5-12% of gypsum, 8-15% of slag, 10-25% of tailings and 20-45% of building wastes, wherein the use level of the chemical excitant is 0.02-0.08% of the total weight of the raw materials; the slag is slag without metallic iron; the tailings are wastes left by exploiting a mine; the building wastes are building waste bricks or concrete plate blocks without metals or other impurities. The silicate cement disclosed by the invention is widely applied to concrete and cement products, relieves increasingly deficient clinker firing resources and reduces discharge of carbon dioxide of cement, thereby facilitating reduction of severe haze in atmosphere. primary resources are saved and replaced, so that the circular economy development is promoted and the pollution is reduced to protect the ecological environment. In the production process, further pollution on the environment is not generated.

The invention discloses a building block made of quartz sand as a raw material and a preparation method of the building block, and solves problems of low reactivity of quartz sand, difficulty in grinding, high energy consumption and the like in the conventional building blocks. The building block provided by the invention is prepared from the following raw materials in parts by weight: 55-65 parts of quartz sand, 10-15 parts of carbide slag, 10-20 parts of silicon-aluminum active admixture, 6-8 parts of lime, 2-3 parts of cement, 3-7 parts of additive and 8-10 parts of acid solution with concentration of 5%. The preparation method comprises the following steps: firstly mixing and grinding quartz sand with the acid solution; then, adding the other components to be grinded to obtain slurry; placing the slurry in a stirring machine; adding cement and additive to be stirred and formed; then, performing gas release, blank repairing and steam pressing to obtain a sand aerated building block. The building block provided by the invention is simple in process, low in production cost, high in reactivity, excellent in performance, low in energy consumption and friendly to the environment.

The invention provides a novel red mud-based grouting material and preparation method thereof. The grouting material is prepared from the following components by weight percent: 70-80% of red mud liquid, 15-25% of blast furnace slag powder, 5-10% of compound alkali-activator, 2-10% of water reducing agent and 1-2% of early strength agent. The novel red mud-based grouting material prepared from redmud and the blast furnace slag powder is good in fluidity, high in early strength and short in time of coagulation, and does not shrink. The preparation method provided by the invention reasonably utilizes industrial waste, can reduce the influence of the waste on the environment, and is easy in preparation; the method is simple in steps, convenient to operate and high in practicability.

The invention relates to a composite grinding aid for cement production and a preparation method and application thereof. The grinding aid contains 1 to 10 percent weight of organic aid and 90 to 99 percent weight of inorganic matrix material. The organic aid comprises at least one of polycarboxylic acid and lignosulphonate, C2-C5 polyfatty alcohols, C2-C5 polyfatty alcohol amines and gluconate, and the inorganic matrix material comprises at least one of sodium silicate and sodium carbonate, sulfate, calcined gypsum and calcium oxide. The invention also discloses the preparation method and the application for the composite grinding aid. The product can remarkably improve early and later strengths of cement, reduce the electric consumption of the grinding, and reduce the using amount of clinker. The compressive strength of the cement is obviously improved, the grinding efficiency is improved by between 10 and 20 percent, and the water consumption of the standard consistency of the cement is kept unchanged basically when 10 to 15 percent of the using amount of the clinker is reduced. The composite grinding aid is particularly suitable for a cement production technology which uses pulverized fuel ash and furnace bottom slag of coal-fired power plants as a composite material.

The invention belongs to the field of concrete, and particularly discloses C70 high-strength concrete and a preparation method thereof. The concrete is prepared from the following materials in parts by weight: 365-415 parts of cement, 70-90 parts of mineral powder, 25-35 parts of coal ash, 40-60 parts of desulphurization ash, 950-1100 parts of coarse aggregate, 650-800 parts of fine aggregate, 3-4.5 parts of a water reducer, 5-12 parts of a corrosion inhibitor and 125-145 parts of water. The invention provides the C70 high-strength concrete; the concrete has a good slump, good extended degree,good compressive strength, and excellent comprehensive performance, and meanwhile, the problems of resource shortage of traditional cement admixtures of the mineral powder, the coal ash and the like,and limited resourced approaches and a low utilization rate of the desulphurization ash are solved.

The invention discloses double-fluid rapid hardening slurry for roadway grouting and mollisol compaction grouting, remedying the defects that a cement-sodium silicate slurry concrement body has poor durability, and the grouting process is complicated. The slurry contains fluids A and B; the fluids A and B are injected at equal volume, and the on-site operation is simple. The fluid A contains 50 percent of portland cement, 0.5-0.75 percent of inorganic sodium salt, 0.025-0.05 percent of organic alcohol early strength agent and the balance of water; and the fluid B contains 43.6-48.8 percent ofcoal ash, 13.9-20.05 percent of sodium silicate and the balance of water. The performances of the slurry are shown as follows: the gelation time is adjustable within the range of 36s-124s, the concrement rate is 100 percent and the early compression strength is high; moreover, the concrement body has good durability and does not crack or pulverize. Compared with the original cement-sodium silicate slurry, the grouting process is simple, the durability of the slurry concrement body is obviously improved, the sodium silicate consumption is saved and the grouting cost is greatly reduced.

The invention discloses controllable clay and cement seepage-proof reinforcement paste. The controllable clay and cement seepage-proof reinforcement paste is mainly prepared from clay raw stock, cement and water, wherein the clay raw stock is mainly obtained by stirring clay and water. A modifier is added in the controllable clay and cement seepage-proof reinforcement paste; the doping amount of the modifier is 1 to 3 percent; the modifier mainly comprises mineral additives, sulfate and bentonite in a mass ratio of a:b:c; and a:b:c is 5:(5-0):(0-5). The product has the advantages of high stability and water flow dilution resistance, controllable setting time, adjustable strength, high antiseepage performance, low cost, environment friendliness and the like.