Regenerated corundum spinel unfired ladle brick

Abstract

The invention discloses a regenerated corundum spinel unfired ladle brick. The ladle brick comprises the raw materials of, by weight, 40-70 parts of corundum regenerated material and 2 -10 parts of a binder; the corundum regenerated material is one or two selected from a corundum regeneration precast block and corundum regeneration spinel block. The method is as below: first, weighing corundum regenerated material and the binder according to the weight ratio for standby; then milling the weighed raw materials by a kollermill; then molding in a brick machine; conducting heat treatment at 150-250 DEG C for 12-36 h; and finally picking, packing, inspecting and storing in the warehouse, so as to obtain the regenerated corundum spinel unfired ladle brick. The invention reasonably and effectively use the corundum regenerated material, reduces the waste of resources, stabilizes product performance, reduces the production cost, and improves the market competitiveness of product.

Description

Technical field [0001] The invention relates to the field of refractory materials, in particular to a kind of recycled corundum spinel non-fired ladle brick. Background technique [0002] With the rapid development of iron and steel metallurgical technology, smelting low-carbon steel or ultra-low-carbon steel has become the key product of most large-scale steel companies at home and abroad. However, the refractory materials used in the domestic smelting of low-carbon steel or ultra-low-carbon steel are mainly corundum prefabricated blocks, corundum spinel bricks and ordinary aluminum-magnesium bricks. [0003] However, since the corundum prefabricated blocks and corundum spinel bricks mainly use high-purity raw materials such as tabular corundum, white corundum, dense corundum or magnesia-aluminum spinel, although they have excellent performance, their production costs are too high. High; while ordinary aluminum magnesia bricks mainly use low-purity raw materials such as bauxite a...

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Problems solved by technology

[0003] However, since corundum prefabricated blocks and corundum spinel bricks mainly use high-purity raw materials such as tabular corundum, white corundum, dense corundum or magnesia-aluminum spinel, although they have excellent performance, their production costs are too high. High; while ordinary alumina-magnesia bricks mainly use low-purity raw materials such as bauxite and magnesia, although their production cost is only about half of that of corundum prefabricated blocks and corundum spinel bricks, their performance is poor

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