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

A dry-type ramming material, thermal insulation technology, applied in the direction of brick blast furnaces, etc., can solve the problems of high thermal conductivity and poor thermal insulation performance of the thermal insulation layer, and achieve good thermal insulation performance, less heat loss, and the furnace shell The effect of low temperature

Inactive Publication Date: 2017-09-22
ZHENGZHOU ANNEC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The siliceous dry ramming material used for heat insulation and heat preservation of hot blast stoves in this embodiment is prepared according to the following steps:

[0020] (1) Take 10 parts by weight of waste silica bricks with a particle size of 3-5mm, 30 parts of waste silica bricks with a particle size of 1-3mm, and 25 parts of silica with a particle size of 0-1mm. 1-2 minutes;

[0021] (2) Parts by weight are 35 parts of silica with a particle size lower than 0.088mm, 1 part of boric acid, and the weighing ratio is good, and mixed in a pre-mixer for 1-2 minutes to obtain a fine powder matrix;

[0022] (3) Add the fine powder matrix premixed in step 2 to the stirring equipment in step 1 and stir for 3-5 minutes; after mixing evenly, a light siliceous dry ramming material is obtained, and the light siliceous dry ramming The materials are packaged and transported to the site of use.

[0023] When constructing the regenerator and combustion chamber of the hot blas...

Embodiment 2

[0028] The siliceous dry ramming material used for heat insulation and heat preservation of hot blast stoves in this embodiment is prepared according to the following steps:

[0029] (1) Take 12 parts by weight of waste silica bricks with a particle size of 3-5mm, 28 parts of waste silica bricks with a particle size of 1-3mm, and 30 parts of silica with a particle size of 0-1mm. 1-2 minutes;

[0030] (2) 30 parts of silica with a particle size lower than 0.088mm, 1.5 parts of boric acid, and a good weighing ratio are mixed in a pre-mixer for 1-2 minutes;

[0031] (3) Add the fine powder matrix premixed in step 2 to the stirring equipment in step 1 and stir for 3-5 minutes; after mixing evenly, a light siliceous dry ramming material is obtained, and the light siliceous dry ramming The materials are packaged and transported to the site of use.

[0032] When constructing the regenerator and combustion chamber of the hot blast stove, the working lining is firstly built, and when...

Embodiment 3

[0037] The siliceous dry ramming material used for heat insulation and heat preservation of hot blast stoves in this embodiment is prepared according to the following steps:

[0038] (1) Take 15 parts by weight of waste silica bricks with a particle size of 3-5mm, 30 parts of waste silica bricks with a particle size of 1-3mm, and 25 parts of silica with a particle size of 0-1mm. 1-2 minutes;

[0039] (2) 35 parts of silica with a particle size lower than 0.088mm, 0.5 part of boric acid, and a good weighing ratio, mixed in a pre-mixer for 1-2 minutes to obtain a fine powder matrix;

[0040] (3) Add the pre-mixed fine powder base in step 2 to the mixing equipment in step 1 and stir for 3-5 minutes. After mixing evenly, a light siliceous dry ramming material is obtained. The materials are packaged and transported to the site of use.

[0041] When constructing the regenerator and combustion chamber of the hot blast stove, the working lining is firstly built, and when the buildin...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/14C21B9/06
CPCC04B35/14C04B35/66C04B2235/3409C21B9/06
Inventor 李富朝孙庚辰尹坤宝
Owner ZHENGZHOU ANNEC IND
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