Forsterite, andalusite, kyanite, sillimanite, meerschaum

1. forsterite refractories used: A. making forsterite bricks for ladle, glass melting furnace. B. As electric furnace steel filler mouth main raw material. C. soaking furnace hearth ramming material. 2. as metallurgical flux and slag modifiers: Requires Mg0> 40%; harmful ingredients requires Al203 <1.6%; S <0.26%; P <0.05%. 3. The foundry sand: olivine sand is the world's advanced countries in the production of steel castings, especially good modeling materials used in steel fierce, high temperature, anti-erosion, chemical stability. The sand has a high refractoriness (1710C) and anti-erosion ability of metal oxide, which can effectively prevent chemical sticky sand casting, casting guaranteed smooth casting surfaces and clear outline. The sand at all temperatures expansion is slow, and less distortion, no sudden expansion characteristics, easy production of primary sand casting defects. 4. Physical indicators: the chemical composition of particle size distribution packaging Mg0 44-49% 0-25 mm 50kg or 1000kg Si0 40-43% 0-3 mm Ti02 0.01-0.05% 0-5 mm Cr203 0.5-0.33% 2-5 mm Ca0 0.3-0.56% 1-7 mm Fe0 7-9% 3-6 mm on ignition <3% 35 mesh -325 mesh sillimanite 1. Product performance and use: natural sillimanite is a high-resistance material, chemical composition (Al203 Si02) belongs to monoclinic crystal thin type, has a high melting point and refractoriness, having high temperature thermal shock resistance and good slag resistance under heavy load, widely used as a senior refractories, technical ceramic materials, silica alloy materials and industrial sectors thermal equipment. 2. Physical and Chemical Indicators: a product Al203 55% Fe203 1.0% K2O + Na0 <0.5% Second grade Al203 54% Fe203 1.2% K2O + NaO <0.6% three products Al303 53% Fe203 1.5% K2O + NaO <0.8 % refractoriness: 1760C. Hardness: 7 Density: 3.1-3.2g / cm3 loss on ignition: 0.54-0.88% Specifications: 100-180 mesh andalusite concentrate Properties and Uses: andalusite is better than bauxite, kaolin refractories. It has high refractoriness (1790-1810 ℃), thermal shock resistance to chemical corrosion, good electrical insulation properties, thermal mechanical strength, heat smaller size, thermal shock and high temperature load energy saving and many other advantages. Widely used in brick stove, ladle lining brick, do not burn plugs brick, tile and small with high load softening point, high thermal stability of alumina brick, high aluminum stove, ceramic fired burner and special refractory castable brick and unshaped refractories. Physical indicators: Al2O3 53--55% SiO2 38-40% Fe2O3 1.1-1.4% Specifications: 0-3mm, 100-400 mesh, monthly amount: 500t packaging:. 50kg or 1000kg. Kyanite Product performance and use: kyanite do stereotypes refractory materials for the production of bricks, crucibles, electric spark plug and pyrometer casing; also for unshaped refractory materials, such as spray paint, can be plastics, ramming refractory clay and other materials. Physical indicators: Al203 53-56% Si02 38-42% Fe203 <1% Ti02 <2.5% K20 + Na0 <1.2% loss on ignition: 3-5% size: 0-0.5mm Hardness: 6.5-7.2 Density: 3.2g / ck3 monthly capacity of 1,000 tons, 50kg packaging. Open, according to 17% of the value-added tax invoices.