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Refractory ball

Refractory ball provided by us is made of bauxite, alumina, mullite, corundum, zirconia corundum, chrome corundum, cordiarite, magnesia and many other materials. It is widely used in hot blast stove and blast furnace of steel industry.
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DESCRIPTION

Refractory ball provided by us is made of bauxite, alumina, mullite, corundum, zirconia corundum, chrome corundum, cordiarite and other refractory raw materials. After repeated development and improvement by our technical department, low creep is the most outstanding feature of refractory ball, and the product is widely used in hot blast stove steel industry, the using effect is remarkable.

Refractory ball features:

Low creep 

High compressive strength and high mechanical strength

Excellent high temp performance

Good wear resistant and good chemical stability

Long service time

 

Item RQA-55 RQA-65 RQA-70 RQA-75 RQA-80
Al2O3 (%) ≥ 55 65 70 75 80
Fe2O3 (%)≤ / / 1.2 1.8 1.6
Bulk density (g/cm3) ≥ 2.1 2.3 2.65 2.5 2.7
Apparent porosity (%)  ≤ 28 26 22 24 22
Cold crushing strength(KN) ≥ 8 10 30 15 25
Refractoriness under load (℃) ≥ 1400 1450 1520 1480 1530
Thermal shock resistance 1100℃, water cooling (times)  ≥ 15 15 15 15 10

 

Refractory ball

 

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