Introduction to common refractory materials
Refractory brick
1. High-aluminum brick: Al2O3 content is more than 75, the refractoriness is higher than clay brick, and it is good in acid and alkali corrosion resistance. It is suitable for cement kiln firing zone, etc., long service life but high price.
2, dolomite brick: hanging kiln skin performance, good resistance to erosion, but there are many bricks in the f-CaO, easy to hydrate, difficult to transport and storage, less used in production
3, magnesia chrome brick: hanging kiln skin is good, mostly used for firing belt, the shortcoming is poor thermal shock resistance, plus the positive hexavalent Cr is highly toxic, the international production and use of magnesia chrome bricks gradually reduced, now use this Brick production units find alternatives as early as possible
4, spinel brick: mostly used for excessive belt, good seismic performance, good resistance to reduction, but the degree of refractor is slightly worse
5, anti-flaking brick: this brick contains a small amount of ZrO, Markov transformation during the heating process to form fine cracks, has strong alkali resistance, good resistance to spalling and slag resistance
6, phosphate brick: low refractoriness, but high strength and thermal shock resistance, mostly used in grate coolers, kiln hoods, etc.
7. Silicon carbide brick: high temperature resistance (about 1800 degrees, load softening temperature is 1620-1640), small thermal expansion coefficient, resistance to quenching, rapid heat and wear resistance, suitable for cooling belt and kiln mouth
8. Silica brick: good thermal shock resistance, high strength, good wear resistance, suitable for excessive belt.
Fire-resistant soil
Folk point furnace set furnace used a soil
Clay refractory soil 1, characteristics and use: Clay refractory brick is a weakly acidic refractory material with good thermal stability, suitable for hot blast stoves, various boiler linings, and flue and smoke chambers. 2. Product specification forms: standard shape, general shape, special shape and special shape brick. Physical and chemical properties of clay refractory bricks.
Special Pipe,Special Pipe Fittings,Steel Pipe & Tube,Alloy Steel
Stainless Steel,Plasma Cutting Machine Co., Ltd , http://www.nbsteelpipe.com