Furnace-ramming ingredient of atmospheric-pressure medium-frequency furnace and preparation method of crucible

An intermediate frequency furnace and normal pressure technology, which is applied to crucible furnaces, furnaces, furnace types, etc., can solve problems such as induction coil scalding, and achieve the effect of reducing power consumption and eliminating furnace leakage accidents

Inactive Publication Date: 2015-04-29
BENGANG STEEL PLATES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furnace leakage accidents occurred frequently, and th

Method used

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  • Furnace-ramming ingredient of atmospheric-pressure medium-frequency furnace and preparation method of crucible
  • Furnace-ramming ingredient of atmospheric-pressure medium-frequency furnace and preparation method of crucible

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Embodiment

[0023] Furnace ingredients for atmospheric pressure intermediate frequency furnace, the ingredients include: 96% fused magnesia mixed with 1% boric acid and then fully mixed with 3% water; the particle size ratio of fused magnesia is based on weight The percentage is: fused magnesia with 200 mesh < particle size ≤ 1mm accounts for 20%, fused magnesia with 3mm ≤ particle size < 5mm accounts for 10%, fused magnesia with 5mm ≤ particle size ≤ 8mm accounts for 40%, and particle size ≤ 200 mesh Fused magnesia accounts for 30%.

[0024] Selected boric acid requires B according to weight percentage 2 o 3 ≥98%, water≤0.5%, and the balance is impurities. The particle size of boric acid: 0

[0025] During the preparation, the steel model is welded with steel plates, made hollow and according to a certain unit area, a few small holes are drilled to facilitate ventilation during heating. The crucible plays the role of electric induction heating. First dry the furna...

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Abstract

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.

Description

technical field [0001] The invention belongs to the field of preparation of smelting crucibles, and in particular relates to a preparation method of batching ingredients for an atmospheric pressure intermediate frequency furnace and a crucible. Background technique [0002] Atmospheric pressure induction furnace is a kind of smelting equipment. Due to the particularity of smelting equipment, it can smelt purer metal products. The existing normal pressure induction furnace puts the smelted metal into a crock pot with an inductor outside, and generates heat energy to melt the metal by induction current. The first method of making the furnace: it is to use the outer layer of the forming cylinder pot to fill the furnace with magnesia; the second method is to use all the prepared magnesia (quartz sand), glass water, boric acid, Knot the crock pot with water, and carry out the oven according to a certain process to complete the steps of crock pot forming. Except for magnesium-al...

Claims

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Application Information

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IPC IPC(8): C04B35/66F27B14/10F27B14/06
Inventor 张文鑫孙忠斌
Owner BENGANG STEEL PLATES
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