Refractory Ball

Features:The diameter of the product is normallyφ40-φ80mm,large surface area,sufficient heat exchange.It was mainly used in various hot stove with above500m³blast furnace,because of different wind temperature and ash density containing in coal gas for buring,the material of ball is differ.

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Features:The diameter of the product is normallyφ40-φ80mm,large surface area,sufficient heat exchange.It was mainly used in various hot stove with above500m³blast furnace,because of different wind temperature and ash density containing in coal gas for buring,the material of ball is differ.
 

Parameter:

Item High strength high alumina ball Low creep high alumina ball
φ40 mm φ50 mm φ60 mm φ50 mm φ60mm
Al2O3% ≥65 ≥65 ≥65 ≥65 ≥65
Fe2o3% ≤2.2 ≤2.2 ≤2.2 ≤2.0 ≤2.0
Refractoriness ℃ ≥1790 ≥1790 ≥1790 ≥1790 ≥1790
Apparent porosity% ≤24 ≤24 ≤22 ≤22 ≤22
Volume density g/cm³ ≥2.2 ≥2.3 ≥2.4 ≥2.4 ≥2.4
Compression strength(Mpa) ≥10000 ≥12000 ≥15000 ≥13000 ≥15000
RUL(Refractoriness Under Load) ≥1460 ≥1460 ≥1480 ≥1480 ≥1500
Reheating Liner Change Rate - - - 0.1~0.4 0.1~0.4
Creep rate% - - - 1450℃x50h   ≤1 1450℃x50h≤1

 

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