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Furnace-ramming ingredient of atmospheric-pressure medium-frequency furnace and preparation method of crucible
The invention belongs to the field of preparation of smelting crucibles and particularly relates to a furnace-ramming ingredient of an atmospheric-pressure medium-frequency furnace and a preparation method of a crucible. The ingredient is prepared by mixing 96-98% (in percentage by weight) of fused magnesia and less than 1% (in percentage by weight) of boric acid, adding 2-3% (in percentage by weight) of water and fully mixing, wherein the particle size and ratio (in percentage by weight) of fused magnesia are as follows: fused magnesia of which the particle size is greater than 200 meshes and less than or equal to 1mm accounts for 20%, fused magnesia of which the particle size is equal to or greater than 3mm and less than 5mm accounts for 10%, fused magnesia of which the particle size is equal to or greater than 5mm and less than or equal to 8mm accounts for 40% and fused magnesia of which the particle size is less than or equal to 200 meshes accounts for 30%. By adding the ingredient and optimizing the process, the service life of the furnace is increased not less than 30% compared to the furnace life, the power consumption is decreased by 70-90%. The furnace leakage accident is basically eliminated.
Furnace-ramming ingredient of atmospheric-pressure medium-frequency furnace and preparation method of crucible
The invention belongs to the field of preparation of smelting crucibles and particularly relates to a furnace-ramming ingredient of an atmospheric-pressure medium-frequency furnace and a preparation method of a crucible. The ingredient is prepared by mixing 96-98% (in percentage by weight) of fused magnesia and less than 1% (in percentage by weight) of boric acid, adding 2-3% (in percentage by weight) of water and fully mixing, wherein the particle size and ratio (in percentage by weight) of fused magnesia are as follows: fused magnesia of which the particle size is greater than 200 meshes and less than or equal to 1mm accounts for 20%, fused magnesia of which the particle size is equal to or greater than 3mm and less than 5mm accounts for 10%, fused magnesia of which the particle size is equal to or greater than 5mm and less than or equal to 8mm accounts for 40% and fused magnesia of which the particle size is less than or equal to 200 meshes accounts for 30%. By adding the ingredient and optimizing the process, the service life of the furnace is increased not less than 30% compared to the furnace life, the power consumption is decreased by 70-90%. The furnace leakage accident is basically eliminated.
Furnace-ramming ingredient of atmospheric-pressure medium-frequency furnace and preparation method of crucible
ZHANG WENXIN (author) / SUN ZHONGBIN (author)
2015-04-29
Patent
Electronic Resource
English
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