高钙电熔镁砂在镁钙砖中的应用

Abstract

Abstract:

High-calcium magnesite is used as raw material to produce high-calcium fused magnesia through electric melting furnace.High calcium fused magnesia and MgO-CaO clinker are used as raw materials.After crushing,sieving,batching,mixing and other processes by hydraulic press under pressure of 2 500 t, MgO-CaO green brick is made.Then by firing the green brick at the temperature of 1 580 ℃ in the tunnel kiln,a special MgO-CaO brick is obtained.The fired brick has high volume density,high modulus of rupture and cold crushing strength,good thermal shock stability,low impurity content,good erosion resistance and strong scour resistance.The anti-spalling behavior and anti-slag permeability of MgO-CaO brick are better than the existing ones.The service life of the fired brick in stainless steel kiln is increased by 20%.

Key words:

"> High-calcium magnesite, High-calcium fused magnesia, MgO-CaO brick, AOD furnace

CLC Number:

TQ175.7

Li Yanping. Application of high-calcium fused magnesia in MgO-CaO brick[J]. REFRACTORIES & LIME, 2022, 47(1): 32-34.

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Application of high-calcium fused magnesia in MgO-CaO brick

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