Raw materials and preparation method of anti-corrosion mullite brick
A mullite brick, anti-erosion technology, applied in the field of thermal insulation and refractory materials, can solve the problems of unable to block the erosion of thermal insulation refractory layer, accelerate the peeling and collapse of thermal insulation layer, and reduce the thermal insulation performance of coke oven, achieve good chemical inertness, resist the Effects of erosion, good acid resistance and fire resistance
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Embodiment 1
[0022] Based on a sintering batch, the total weight of raw materials for the preparation of mullite is 25T, of which calcium hexaaluminate accounts for 15% of the total weight of raw materials, andalusite 18%, sillimanite 5%, and aluminum oxide powder 5% , cordierite 10%, pyrophyllite 22%, kaolin 11%, chromium oxide 8%, foaming agent 3%, binder 3%. Wherein the refractory oxide is chromium trioxide; EPS foamed plastic particles in the foaming agent account for 0.5% of the total weight of the raw materials for preparation, sawdust 2.5%; organic or inorganic binders.
[0023] The particle size of calcium hexaaluminate used in the above raw materials is 1.5mm; the particle size of andalusite is 0.55mm; the particle size of sillimanite is 0.088mm; the particle size of aluminum oxide powder is 4um; the particle size of cordierite is 0.074mm; ; The particle size of kaolin is 0.044mm; the particle size of chromium trioxide is 0.044mm; the particle size of EPS foamed plastic is 1.5mm....
Embodiment 2
[0032] Based on a sintering batch, the total weight of raw materials for the preparation of mullite is 25T, of which calcium hexaaluminate accounts for 10% of the total weight of raw materials, andalusite 15%, sillimanite 8%, and aluminum oxide powder 8% , cordierite 16%, pyrophyllite 24%, kaolin 13%, zirconia 3%, foaming agent 2%, binder 1%. The refractory oxide is zirconia; the EPS foamed plastic particles in the foaming agent account for 0.2% of the total weight of the raw materials and sawdust 1.8%; the binding agent is yellow dextrin.
[0033] The calcium hexaaluminate particle size selected for the above-mentioned preparation raw materials is 1mm; the particle size of andalusite is 0.2mm; the particle size of sillimanite is 0.075mm; the particle size of aluminum oxide powder is 3um; The particle size is 0.043mm; the particle size of zirconia is 0.043mm; the particle size of EPS foamed plastic is 0.5mm.
[0034] After preparing the above raw materials according to their ...
Embodiment 3
[0042] Based on one sintering batch, the total weight of raw materials for the preparation of mullite is 25T, of which calcium hexaaluminate accounts for 15% of the total weight of raw materials, andalusite 15%, sillimanite 8%, and aluminum oxide powder 5% , cordierite 12%, pyrophyllite 27%, kaolin 10%, magnesium oxide 5%, foaming agent 1%, binder 2%. The refractory oxide is magnesium oxide or calcium oxide; EPS foamed plastic particles in the foaming agent account for 1% of the total weight of the raw materials and sawdust 4%; the binder is calcium lignosulfonate.
[0043] The particle size of calcium hexaaluminate selected for the above preparation raw materials is 2mm; the particle size of andalusite is 1mm; the particle size of sillimanite is 0.062mm; the particle size of aluminum oxide powder is 5um; 0.038mm; magnesium oxide particle size 0.038mm; EPS foam plastic particle size 3mm.
[0044] After preparing the above raw materials according to their ratio and particle si...
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