High-performance magnesium-aluminum-chromium composite spinel brick and manufacturing method thereof
A technology of spinel brick and manufacturing method, which is applied in the field of refractory materials, can solve the problems of affecting slag resistance permeability and erosion performance, damage of magnesia-chrome bricks, and reduction of density of magnesia-chrome bricks, etc., to achieve enhanced direct bonding ability, porosity The effect of low rate and lower sintering temperature
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Embodiment 1
[0034] A high-performance magnesium-aluminum-chromium composite spinel brick is made of the following raw materials in proportion by weight:
[0035] 8 parts of 5mm~3mm fused magnesia;
[0036] 27 parts of 3mm~1mm fused magnesia;
[0037] ≤ 1mm fused magnesia 24 parts;
[0038] ≤0.074mm fused magnesia 23 parts;
[0039] 7 parts of 3mm~1mm low-chromium fused magnesia-chrome sand;
[0040] ≤ 1mm 4 parts of low-chromium fused magnesia-chrome sand;
[0041] 3 parts of ≤0.074mm low-chromium fused magnesia-chrome sand;
[0042] 10nm~50nm Nano Cr 2 o 3 2 parts powder;
[0043] 2 o 3 Micropowder 2 parts;
[0044] 2 ~ 4 parts of binder;
[0045] The binder is sulfurous acid pulp waste liquid.
[0046] A method for manufacturing high-performance magnesia-aluminum-chromium composite spinel bricks, comprising the steps of:
[0047] 1) Preparation of low-chromium fused magnesia-chrome sand: 15.4 parts of chromium ore powder and 84.6 parts of...
Embodiment 2
[0057] A high-performance magnesium-aluminum-chromium composite spinel brick is made of the following raw materials in proportion by weight:
[0058] 8 parts of 5mm~3mm fused magnesia;
[0059] 26 parts of 3mm~1mm fused magnesia;
[0060] 23 parts of 1mm~0mm fused magnesia;
[0061] ≤0.074mm fused magnesia 19.8 parts;
[0062] 8 parts of 3mm~1mm low chromium fused magnesia chrome sand;
[0063] 5 parts of 1mm~0mm low chromium fused magnesia chrome sand;
[0064] 4 parts of ≤0.074mm low-chromium fused magnesia-chrome sand;
[0065] 10nm~50nm Nano Cr 2 o 3 3.2 parts of powder;
[0066] 2 o 3 3 parts of micronized powder;
[0067] 2 ~ 4 parts of binder;
[0068] The binder is sulfurous acid pulp waste liquid.
[0069] A method for manufacturing high-performance magnesia-aluminum-chromium composite spinel bricks, comprising the steps of:
[0070] 1) Preparation of low-chromium fused magnesia-chrome sand: 15.4 parts of chromium ore powder and 84.6 parts of lightly ...
Embodiment 3
[0080] A high-performance magnesium-aluminum-chromium composite spinel brick is made of the following raw materials in proportion by weight:
[0081] 8 parts of 5mm~3mm fused magnesia;
[0082] 25 parts of 3mm~1mm fused magnesia;
[0083] ≤ 1mm fused magnesia 22 parts;
[0084] ≤0.074mm fused magnesia 16.6 parts;
[0085] 9 parts of 3mm~1mm low chromium fused magnesia chrome sand;
[0086] 6 parts of ≤ 1mm low-chromium fused magnesia-chrome sand;
[0087] ≤0.074mm low chromium fused magnesia chrome sand 5 parts;
[0088] 10nm~50nm Nano Cr 2 o 3 4.4 parts of powder;
[0089] 2 o 3 4 parts of fine powder;
[0090] 2 ~ 4 parts of binder;
[0091] The binder is sulfurous acid pulp waste liquid.
[0092] A method for manufacturing high-performance magnesium-aluminum-chromium composite spinel bricks, comprising the steps of:
[0093] 1) Preparation of low-chromium fused magnesia-chrome sand: 15.4 parts of chromium ore powder and 84.6 parts of lightly burned magnesiu...
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