Fused-rebonded magnesite-chrome brick with excellent thermal shock resistance and production process
A stable and recombined technology, applied in the field of high-grade magnesia-chrome bricks for RH refining furnaces in the metallurgical industry, can solve problems such as increased refractory process costs, unfavorable sustainable development, thermal shock stability, and poor slag resistance. Improved thermal shock resistance, reduced energy consumption, and better firing effects
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example 1
[0027] Example 1: An electro-fused rebonded magnesia-chrome brick with excellent thermal shock stability, its raw material ratio is: high-purity magnesia: 25, large crystal fused magnesia: 35, fused magnesia-chrome: 25, chromite : 10, MgCO 3 : 2. Chromium concentrate superfine powder: 3. Rare earth sintering agent: 0.5. Sulfurous acid pulp waste liquid: 3. Specific gravity δ of sulfurous acid pulp waste liquid, 1.32≥δ≥1.28g / cm 3 .
example 2
[0028] Example 2: An electro-fused rebonded magnesia-chrome brick with excellent thermal shock stability, the ratio of raw materials by weight is: high-purity magnesia: 25, large crystal fused magnesia: 20, fused magnesia-chrome: 40, Chromite: 5, MgCO 3 : 8. Chromium concentrate superfine powder: 2, 0.1 parts of rare earth sintering agent and 3 parts of sulfurous acid pulp waste liquid, the specific gravity δ of sulfurous acid pulp waste liquid, 1.32≥δ≥1.28g / cm 3 .
example 3
[0029] Example 3: An electro-fused rebonded magnesia-chrome brick with excellent thermal shock stability, the ratio of raw materials by weight is: high-purity magnesia: 15, large crystal fused magnesia: 35, fused magnesia-chrome: 30, Chromite: 13, MgCO 3 : 2, ultrafine powder of chrome concentrate: 5, 0.2 parts of rare earth sintering agent and 3 parts of sulfurous acid pulp waste liquid, the specific gravity δ of sulfurous acid pulp waste liquid, 1.32≥δ≥1.28g / cm 3 .
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