• Refractory Ball for Hot-Blast Furnace
  • Refractory Ball for Hot-Blast Furnace
  • Refractory Ball for Hot-Blast Furnace
  • Refractory Ball for Hot-Blast Furnace

Refractory Ball for Hot-Blast Furnace

Catalog: Refractory Ball | 2021-04-25

1. Al2O3: 70-95%
2. Size: 40-80mm

√ High mechanical strength
√ Good thermal stability
√ Good chemical stability

Product Details

Refractory ball for hot-blast furnace is a solid sphere composed of refractory aggregate and refractory powder, mixed with bond, molded and fired, used as the heat regenerator of ball-type hot-blast furnace.

The refractory ball for ball-type hot-blast furnace produced by our factory is made by highly precise technology and mechanical molding method. It is of high bulk & density, low creep, high softening temperature with load, thermal shock resistance, good corrosion resistance. It can develop the smelting condition efficiently, increase hot blast temperature, reduce energy consumption of iron-making, prolong the service life of ball-type hot-blast furnace.

Based on chemical composition, refractory ball for ball-type hot-blast furnace can be divided into five types: high alumina ball, fused alumina zirconia ball, pink fused alumina ball, alumina-zirconia-chromic compound ball and low creep ball.

Refractory Ball for Hot-Blast Furnace Standard Size: 

Based on diameter size, it can be divided into four types: φ40mm, φ50mm, φ60mm, φ80mm. We can also offer customized products according to your requirements on content, index and specification.

Physical & Chemical Indexes:

For High Alumina Refractory Ball:

Refractory Ball for Hot-Blast FurnaceIndex
ω(Al2O3) / %75
ω(Fe2O3) / %1.8
Bulk & Density / (g/cm³)2.35
Apparent Porosity / %24
Cold Crushing Strength / Ball11
Softening Start Temperature with Load / ℃1450

For Fused Alumina Zirconia Ball, Pink Fused Alumina Ball, Alumina-Zirconia-Chromic Compound Ball and Low Creep Ball:

Item RQAZ-82RQAZ-88RQAZC-80RQAD-70
ω(Al2O3)/%78867570
ω(Cr2O3)/%20.5
ω(ZrO2)/%4.54.5
ω(Fe2O3)/%0.61.01.61.8
Bulk & Density / (g/cm³)3.052.902.752.60
Apparent Porosity / %18182224
Cold Crushing Value/KN35352515
Softening Start Temperature with Load / ℃(100N/Ball)1550155015501550
Thermal Vibration Stability (1100℃, Cold Water)/Times871015
Creep Efficiency/%(100N/Ball,1400℃,50h)1.0