Mineral powder is a general designation of stone powder and its substitutes that meet the engineering requirements. It is the product of crushing ore, the first step of ore processing and smelting, and one of the most important steps. The hydrophilic coefficient of mineral powder is the ratio of the expansion volume of unit mineral powder in the same volume of water (polar molecules) and kerosene (nonpolar molecules). In highway engineering, the mineral powder whose hydrophilic coefficient is less than 1 is called alkaline mineral powder.
Ore powder generally refers to the material powder obtained after crushing the mined ore, such as iron ore powder, which refers to the ore powder with different iron content obtained after grinding, ball milling and magnetic separation of different types of iron ores, such as limonite and magnetite. The iron content of common ore powder is 60-68%, and that of super concentrate powder is 70-72%. While the iron content is higher than that of ore powder by different processing technologies, such as reduction method , water or air atomization method, mechanical grinding method, electrolysis method, molten salt decomposition method, evaporation condensation method, etc. to obtain high-grade granular iron powder, which can meet the use requirements.
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