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The invention relates to a large blast furnace main iron runner castable, and belongs to the field of refractory castables. The large blast furnace main iron runner castable is prepared from, by weight, 5-8 parts of 8-5 mm chromium nitride, 15-20 parts of 5-3 mm chromium nitride, 10-15 parts of 3-1 mm sillimanite, 8-15 parts of 1-0 mm calcium chromate, 2-5 parts of partial clay powder, 3-7 parts of cobaltous oxide aluminum powder, 5-10 parts of cutting powder, 3-8 parts of amorphous graphite powder, 1-2 parts of composite charcoal powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of alumina micro powder, 1-5 parts of magnesium oxide iron powder, 1-3 parts of rho-aluminum oxide, 0-5 parts of electric smelting pure calcium aluminate cement and an addition agent, wherein the addition agent is prepared from, by weight, 0.1-0.2 part of calcium lignosulphonate, 0.01-0.05 part of nanometer potato powder, 0.01 part of malic acid and 0.1 part of C12H14N4O5S2. A blast furnace iron runner made of the castable has the advantages of being good in thermal shock resistance, high in corrosion resistance, large in iron exchanging amount and long in life.
The invention relates to a large blast furnace main iron runner castable, and belongs to the field of refractory castables. The large blast furnace main iron runner castable is prepared from, by weight, 5-8 parts of 8-5 mm chromium nitride, 15-20 parts of 5-3 mm chromium nitride, 10-15 parts of 3-1 mm sillimanite, 8-15 parts of 1-0 mm calcium chromate, 2-5 parts of partial clay powder, 3-7 parts of cobaltous oxide aluminum powder, 5-10 parts of cutting powder, 3-8 parts of amorphous graphite powder, 1-2 parts of composite charcoal powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of alumina micro powder, 1-5 parts of magnesium oxide iron powder, 1-3 parts of rho-aluminum oxide, 0-5 parts of electric smelting pure calcium aluminate cement and an addition agent, wherein the addition agent is prepared from, by weight, 0.1-0.2 part of calcium lignosulphonate, 0.01-0.05 part of nanometer potato powder, 0.01 part of malic acid and 0.1 part of C12H14N4O5S2. A blast furnace iron runner made of the castable has the advantages of being good in thermal shock resistance, high in corrosion resistance, large in iron exchanging amount and long in life.
Large blast furnace main iron runner castable
ZHANG TING (author)
2015-12-16
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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