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The chemical composition of basalt is similar to that of gabbro or gabbro, with SiO2 content varying between 45% and 52%, K2O+Na2O content slightly higher than that of intrusive rocks, and CaO, Fe2O3+FeO, MgO content slightly lower than that of intrusi
Terrazzo characteristics1, wear-resistant terrazzo, surface hardness can reach 6-8 level, colour and lustre bright and clean.2 no dust, high cleanliness; cleanliness to meet the pharmaceutical, chip manufacturing and other high clean envi
River sand is a natural stone in the natural state, by the force of water for a long time repeated impact, friction produced, its composition is more complex, the surface has a certain smoothness, the impurity content of non-metallic minerals. River sa
Nature of ilmeniteIlmenite is one of the main titanium-containing minerals, is the main ore for refining titanium, hardness 5-5.5, brittle, iron black or steel grey in colour, metallic to semi-metallic luster, opaque, sometimes appearing or crac
Magnetite is the ore of the oxide mineral magnetite, mostly granular aggregates, streaks of black, semi-metallic luster, opaque, non-dissolving, hardness 5.5-6.5. density 5.16-5.18g/cm3, with strong magnetic properties. Brittle, odourless, tasteless, p
Hematite is the main mineral form of iron oxide, from which iron is mainly smelted, and although, gradually, other metals are taking the place of iron, iron is still the most important metal. Therefore, hematite is one of the most economically importan
Lead is a metallic element, it is a heavy silver-white metal with blue, melting point 327.502 ° C, boiling point 1740 ° C, density 11.3437 grams / cubic centimetre, specific heat capacity of 0.13 kJ / (kg - K), Moh's hardness of 1.5, the texture
Calcite is a calcium carbonate mineral, belongs to metamorphic rock, the main chemical composition is calcium carbonate, because knocking calcite will get a lot of square pieces, so it is called calcite. Calcite comes in a variety of shapes, including
Silver ore mainly refers to the ore containing the main metal silver and other metal impurities, there are more than 200 kinds of, of which silver is the main element of silver minerals and silver-bearing minerals have more than 60 kinds, but has impor
Tungsten ore contains low tungsten content, must be enriched into concentrates through beneficiation to be used as raw materials for smelting, according to the type of ore tungsten beneficiation is divided into two major types of wolframite beneficiati
