Jaw crusher is widely used in crushing the medium particle size materials of varieties of minerals and large materials, and it is widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry and other industries.
Impact crushers are also known as impact breakers or impact crushing machines. It can crusher the material whose side length is below 100-500mm and highest compressive strength can reach to 350Mpa.
Cone crushers are also known as cone breakers. Compressive strength of cone crusher is no more than 250MPa. Cone crusher is widely used in mining, metallurgy, building materials, chemicals and other sectors to crush hard and medium hard materials.
Sand maker is also known as impact crusher or sand making machine. It is a kind of equipment with high technology.
Hammer crusher is composed of chassis body, rotor, hammer, back liner, sieve, etc.. It is suitable for conduct coarse, medium, fine crushing for materials with the compressive strength less than 180MPa like limestone, coal, gypsum, shale and other types of brittle materials.
Roll crusher (roller crusher) is suitable for the fine crushing of the materials with feeding size less than 110mm, and finished particle size 3-30mm.
Compound crusher is also known as combination rock crusher. Compound crusher is mainly used for medium or small cement or clinker crushing.
Single-stage crusher is suitable for crushing brittle materials with compressive strength less than 150MPa, such as limestone, shale, gypsum, coal, shale and siltstone and limestone and clay mixture.
Fine crusher is also known as high efficiency fine crusher or tertiary crusher. The crushing materials compressive strength is less than 100Mpa and the surface moisture is less than 15%.
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corundum comes in all colours of the rainbow but is most commonly found as opaque crystals with dull colours.red corundum is called ruby, blue corundum is called sapphire, and all other colours are called fancy sapphires. some varieties of corundum will fluoresce under short wave and long wave UV light if there is enough chromium in the crystal structure but little iron, which tends to quench
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star sapphires are created when corundum is intergrown with fibrous inclusions of rutile, called silk, that reflects light in stones cut en cabochon as a six-rayed, sometimes twelve-rayed star that appears to glide across the face of the gem as it is moved. this effect is called asterism and increases the rarity and value of the stone.
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corundum in its pure state is colourless, but the presence of small amounts of impurities can impart a broad range of hues to the mineral. ruby owes its red colour to chromium, sapphire its blue shades to the presence of iron and titanium; most corundum contains nearly percent iron oxide. the mineral readily weathers to other aluminous mineralse.g margarite, zoisite, sillimanite, and
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