Iron runner ramming mass

Abstract

The invention discloses a trough ramming material which comprises aggregate, calcined bauxite, SiC, metal silicon, calcined bauxite powder, oxalic acid, and aluminum sulphate solution; black lead, the metal silicon, the SiC, the calcined bauxite powder, and recycled powder in the formula are weighed according to content; then the oxalic acid is added and stirred for 15 to 20 minutes with a runner wheel; then one half of the aluminum sulphate is added and stirred for 8 to 10 minutes with the runner wheel; then ageing mixture is carried out for 16 to 20h and stirring is carried out for 8 to 10 minutes with the runner wheel; the rest aluminum sulphate is added and stirred uniformly for 10 to 12 minutes, thus obtaining the finished product after being packaged. Compared with the manufacture materials of high energy consumption like the materials of compact corundum, sub-white corundum, excellent high alumina and carborundum used by the traditional trough ramming materials, the method has the advantages of reducing the product cost by more than 30 percent and having better use effect; moreover, the method saves resources and energies, reduces the environment pollution sources, and has excellent economic and social benefits.

Description

technical field [0001] The invention relates to a ramming material for producing iron gutters, which belongs to the main refractory material in the tapping system of iron and steel metallurgy blast furnaces. Background technique [0002] In the early days, the blast furnace tapping channel was generally made of clay clinker, coke grains, light clay and tar pitch. The amount of iron passing was small, the repair was frequent, the working conditions were poor, and the environment was polluted. In recent years, Al 2 o 3 -SiC-C ramming material and Al 2 o 3 -SiC-C castables, which are generally made of dense corundum, sub-white corundum, brown corundum, high-quality high-alumina clinker, silicon carbide and flake graphite plus various ultrafine powders, additives and binders. , the above materials are all resource materials, which consume a lot of energy in the manufacturing process and the equipment investment costs are large. In addition, the current material scheme is not ...

AI Technical Summary

Problems solved by technology

[0002] In the early days, the blast furnace tapping channel was generally made of clay clinker, coke grains, light clay and tar pitch. The amount of iron passing was small, the repair was frequent, the working conditions were poor, and the environment was polluted. In recent years, Al 2 o 3 -SiC-C ramming material and Al 2 o 3 -SiC-C castables, which are generally made of dense corundum, sub-white corundum, brown corundum, high-quality high-alumina clinker, silicon carbide and flake graphite plus various ultrafine powders, additives and binders. , the above materials are all resource materials, which consume a lot of energy in the manufacturing process and the equipment investment costs are large. In addition, the current material scheme is not only expensive for the iron trench material products, but also because the waste materials in the iron and steel production plant cannot be processed in a timely and effective manner. Make full use of it, objectively there is also the actual situation of increasing environmental pollution

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