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The mechanism of mineral powder is that it has microaggregate effect, microcrystalline nucleus effect and volcanic ash effect in concrete, and it can also improve the impermeability of concrete, reduce the heat of hydration, and prevent temperature cracks.
The main raw material of mineral powder is slag, which is the waste slag produced when smelting pig iron in iron and steel smelters. In the blast furnace ironmaking process, in addition to iron ore and fuel, in order to reduce the smelting temperature, an appropriate amount of limestone and dolomite should be added as fluxes, and the components such as calcium oxide and magnesium oxide generated by decomposition in the blast furnace are melted with the waste ore in the iron ore and the carbon ash in the coke to generate a melt with silicate and aluminosilicate as the main components, which floats on the surface of the molten iron, is discharged from the slag discharge port regularly, and forms granular particles after quenching treatment with air or water.
Precautions for the use of mineral powder.
Mineral powder and grade II fly ash compounding: when the mineral powder and grade II fly ash are combined, the content should not be too high, and the appropriate ratio can only be found through experiments. Generally, the amount of fly ash substitution should be controlled within 15, and the amount of ore powder should be controlled within 30.
Because grade II fly ash has a tendency to increase the viscosity of concrete, it is not suitable to prepare high-strength concrete when the two are compounded.
Ore powder and grade I fly ash compounding: ore powder and grade I fly ash composite use should be the best combination. The amount of fly ash is controlled within 20, and the amount of ore powder can be controlled within 40, and the dosage can be adjusted according to different strength grades and technical requirements during the trial.
The above content refers to Encyclopedia - Mineral Powder.
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Hello, dear kiss Your question, here is the following answer for you: slag (also known as granulated blast furnace slag, commonly known as water quenching - the minerals floating on the surface during smelting steel are quenched in water and formed), after drying, grinding (screening), the obtained is mineral powder (also called granulated blast furnace slag powder). The white mineral powder is relatively pure (not excluding other substances mixed with white), while the gray or even blackened mineral powder must be mixed with any cheap impurities such as fly ash, slag, ash and other cheap impurities that can be easily ground and fine, and the more it is mixed, the darker the color.
Two things. Mineral powder is ground from stones. It can be understood as the dust of stone powder.
Slag powder is the slag of blast furnace ironmaking. From the point of view of the mechanism, it is absolutely impossible to say that the mineral powder is inactive, and it is a pure filler. Slag powder is a cementitious material that participates in hydration and resembles cementitious.
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<>Mineral powder is a fine powdery substance, mainly made of non-metallic minerals (such as iron oxide, alumina, silicate, etc.). Mineral powder has a wide range of applications in building materials, chemical industry, metallurgy and other fields, and its main functions and uses are as follows:1
Fillers: Mineral powder can be used as raw materials for various fillers, such as rubber products, plastic products, paints, coatings, etc. 2.
Increase material strength: Mineral powder can increase the strength, hardness and wear resistance of good materials, for example, adding mineral powder to building materials such as cement and concrete can improve its compressive strength. 3.
Adjust the properties of the material: Mineral powder can adjust the various properties of the material, for example, adding mineral powder to rubber products can improve the mechanical properties of rubber and the heat resistance of the friendly mold. 4.
Cost reduction: Mineral powder is a cheap raw material that can be used to replace some expensive raw materials.
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Dear users, Hello mineral powder is a fine bridge powdery substance, which is usually processed by minerals through grinding, screening and other processes. The raw materials of mineral powder can be various ores, slag, coal gangue, etc., which can be used in building materials, cement, concrete, ceramics, glass and other industries after processing. Mineral powder rolling imitation has the characteristics of high fineness, strong activity, and stable chemical composition, which can improve the physical and chemical properties of the material, and improve the strength, durability and corrosion resistance of the material.
In building materials, mineral powder is often used to replace part of cement to reduce the amount of cement used, reduce costs, and also improve the properties of concrete. <>
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Mineral powder is a high-fineness and high-activity powder obtained after quenching blast furnace slag with water, drying, grinding and other processes, which is a high-quality concrete admixture and cement mixture, and is an important material recognized by the world for configuring high-performance concrete. By using granulated blast furnace slag powder, the compressive strength of concrete can be effectively improved and the cost of concrete can be reduced. <
Mineral powder is a high-fineness and high-activity powder obtained after quenching blast furnace slag with water, drying, grinding and other processes, and is a high-quality concrete admixture and cement mixture, and is an important material recognized by the world today for configuring high-performance concrete. By using granulated blast furnace slag powder, the compressive strength of concrete can be effectively improved and the cost of concrete can be reduced. At the same time, it has obvious effects on inhibiting the cultivation reaction of alkali aggregates, reducing the heat of hydration, reducing the early temperature cracks of concrete structures, improving the compactness of concrete, and improving the impermeability and erosion resistance.
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Mineral powder refers to a fine powdery substance made from ore after grinding and treatment.
Mineral powder is a general term for stone powder and its substitutes that meet the requirements of the project. Mineral powder generally refers to the material powder obtained after crushing and processing the mined ore, such as iron ore powder, which refers to the ore powder with different iron content obtained after crushing ball milling and magnetic separation of different types of iron-containing ore such as limonite and magnetite, the iron content of general ore powder is 60-68%, and the iron powder is 70-72%, and the iron powder refers to the relative iron content is higher than that of mineral powder.
Mineral powder adopts different processing techniques such as reduction method, water or gas atomization method, mechanical crushing method, electrolysis method, molten salt decomposition method, evaporation condensation method, etc. to obtain high-grade granular iron powder and achieve the required particle size.
Mineral powder application
Adding fly ash, mineral powder and other active ore punch admixtures to concrete can not only solve the problem of reuse of these industrial waste residues, which is conducive to environmental protection, but also save resources and reduce energy consumption, and can also improve the workability of concrete, improve compressive strength and durability.
The use of active mineral admixture to prepare concrete is one of the research hotspots in recent years, but most of the commercial concrete mixing plants still use the method of single or non-mineral admixture in the production. Although the effects of several mineral admixtures after compounding have been studied, few applications have been seldom. Fly ash and mineral powder are traditional industrial waste residues, which belong to volcanic ash active materials.
They contain more active SiO2 and active Al2O3, and can chemically react with Ca(OH)2 at room temperature to form stable calcium silicate hydrate and calcium aluminate hydrate.
The above content is based on the reference group encyclopedia - mine auspicious orange powder.
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Mineral powder is a general term for stone powder and its substitutes that meet the requirements of the project, and generally refers to the material powder obtained by crushing and processing the mined ore after the sail silver is crushed.
Ore powder is the product of ore crushing and processing, and it is the first and one of the most important steps in ore processing and smelting. The hydrophilic coefficient of mineral powder is the ratio of the volume of the unit mineral powder in the same volume of water (polar molecular state feast) and the volume of kerosene (non-polar molecule). Hydrophilic coefficient of mineral powder in highway engineering.
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