Refractory castable for blast furnace tapping trough swing launder and preparation method thereof
A technology of refractory castables and swing launders, which is applied in the field of refractory castables for swing launders of blast furnace tap troughs and its preparation, can solve the problem of reducing the high temperature strength of corundum-mullite castables, high cost of refractory raw materials, and increased The development cost of refractory castables and other issues can be achieved to save labor resources, improve thermal shock resistance, and reduce development costs
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Embodiment 1
[0034] A refractory castable for a swing launder of a blast furnace tap channel and a preparation method thereof. Use 53~55wt% high-purity magnesia particles and 10~12wt% magnesia-aluminum spinel particles as aggregates, 7~8wt% fine powder of used magnesia carbon bricks, 9~10wt% fine fused magnesia powder , 13~15wt% Cr 7 C 3 Micropowder and 1-3wt% of zirconia micropowder are base materials. According to the content of the aggregate and the matrix material, the matrix material is mixed first, and then the mixed matrix material is added to the aggregate and mixed evenly. Then add 10-11wt% aluminum sol, which accounts for the sum of the matrix material and the aggregate, stir uniformly, shake and shape, cure at room temperature for 6-12 hours, and finally keep it at 90-110°C for 12-24h, The refractory castable for the swinging trough of the blast furnace tap channel is prepared.
[0035] The refractory castable for the oscillating launder of the blast furnace tapping trough prepar...
Embodiment 2
[0037] A refractory castable for a swing launder of a blast furnace tap channel and a preparation method thereof. Using 52~54wt% of high-purity magnesia particles and 10~12wt% of magnesia-aluminum spinel particles as aggregates, 7~8wt% of fine powder of used magnesia carbon bricks, 9~10wt% of fine fused magnesia powder , 14~16wt% Cr 7 C 3 Micropowder and 1-3wt% of zirconia micropowder are base materials. According to the content of the aggregate and the matrix material, the matrix material is mixed first, and then the mixed matrix material is added to the aggregate and mixed evenly. Then add 10-11wt% aluminum sol, which accounts for the sum of the matrix material and the aggregate, stir uniformly, shake and shape, cure at room temperature for 6-12 hours, and finally keep it at 90-110°C for 12-24h, The refractory castable for the swinging trough of the blast furnace tap channel is prepared.
[0038] The refractory castable for the oscillating launder of the blast furnace tapping...
Embodiment 3
[0040] A refractory castable for a swing launder of a blast furnace tap channel and a preparation method thereof. Using 51~53wt% of high-purity magnesia particles and 11~13wt% of magnesia-aluminum spinel particles as aggregates, 8-9wt% of fine powder of used magnesia carbon bricks, and 10~11wt% of fine fused magnesia powder , 15~17wt% Cr 7 C 3 Micropowder and 2~4wt% of zirconia micropowder are base materials. According to the content of the aggregate and the matrix material, the matrix material is mixed first, and then the mixed matrix material is added to the aggregate and mixed evenly. Then add 11-12wt% of aluminum sol, which accounts for the total of the matrix material and the aggregate, stir uniformly, shake and shape, cure at room temperature for 6-12 hours, and finally keep it at 90-110°C for 12-24 hours. The refractory castable for the swinging trough of the blast furnace tap channel is prepared.
[0041] The refractory castable for the oscillating launder of the blast ...
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