Silicon-based dry-type ramming material used for thermal insulation of hot blast stove

Abstract

The invention relates to a silicon-based dry-type ramming material used for the thermal insulation of a hot blast stove. 10-20 weight parts of waste silica bricks with the particle size of 3-5 mm, 20-30 weight parts of waste silica bricks with the particle size of 1-3 mm and 25-35 weight parts of silica with the particle size of 0-1 mm are weighed, matched well and placed in a stirring device for stirring for 1-2 min, 25-35 weight parts of silica with the particle size less than 0.088 mm and 0.5-3 weight parts of boric acid are weighed, matched well and mixed in a premixer for 1-2 min to obtain a fine powder matrix, the fine powder matrix is added into the stirring device for stirring for 3-5 min to obtain the silicon-based dry-type ramming material, the prepared silicon-based dry-type ramming material is poured into gaps among a heat storage chamber of the hot blast stove, a working lining of a combustion chamber and a stove shell, and a thermal insulation layer is formed after uniform ramming. The silicon-based dry-type ramming material has the advantages of being low in thermal conductivity, good in heat-insulating property, and convenient to construct and transport, and the thermal insulation and energy saving effects of the hot blast stove can be effectively improved.

Description

technical field [0001] The invention relates to a siliceous dry ramming material used for heat insulation and heat preservation of a hot blast stove, and a method for manufacturing and using the siliceous dry ramming material, and belongs to the field of heat insulation and heat preservation of the furnace lining of a hot blast stove. Background technique [0002] At present, a large number of blast furnace hot blast stoves in China have the problems of high furnace shell temperature and high energy consumption. Existing hot blast stoves generally use lightweight bricks as insulation materials. However, light bricks have a large thermal conductivity and insufficient heat insulation performance, resulting in high temperature The insulation performance of the parts is not good, the temperature of the furnace shell remains high, and the heat loss is large. In addition, the preparation process of lightweight bricks is complicated, the energy consumption is high during firing, the...

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Problems solved by technology

[0005] The problem to be solved by the present invention is: to overcome the disadvantages of relatively large thermal conductivity and poor thermal insulation performance of the heat insulation layer of the hot blast stove in the prior art, and to provide a silicon dry ramming material used for heat insulation and heat preservation of the hot blast stove

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