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Improved carbonaceous mud for patching blast furnace hearth

A blast furnace, an improved technology, applied in the field of metallurgy, can solve problems such as insufficient fixed carbon deposition, and achieve the effect of improving thermal conductivity and construction performance

Inactive Publication Date: 2011-07-27
上海盛江特种耐火材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of improved carbonaceous mud that is used for repairing blast furnace hearth, and described this improved carbonaceous mud that is used for repairing blast furnace hearth will solve the problem of using carbonaceous mud to repair internal Technical problem of often insufficient fixed carbon deposits when lining gaps

Method used

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  • Improved carbonaceous mud for patching blast furnace hearth
  • Improved carbonaceous mud for patching blast furnace hearth
  • Improved carbonaceous mud for patching blast furnace hearth

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Embodiment 1

[0020] The present invention is an improved carbonaceous mud for repairing the hearth of a blast furnace, which is composed of anthracite powder, graphite powder, electrode powder and coal tar, and the weight percentage of the anthracite powder in the carbonaceous mud is 26% , the weight percentage of the graphite powder in the carbonaceous mud is 6%, the weight percentage of the electrode powder in the carbonaceous mud is 14%, and the balance is the coal tar. A kind of production technology of the improved carbonaceous mud that is used for repairing blast furnace hearth of the present invention is: at first weigh the weight of each component according to weight ratio, secondly, carry out dry mixing with anthracite coal powder, graphite powder and electrode powder, fully After mixing, coal tar is added for kneading to obtain the improved carbonaceous slurry for repairing the hearth of the blast furnace. This product is suitable for use when the gaps in the lining of the blast f...

Embodiment 2

[0022] The present invention is an improved carbonaceous mud for repairing the hearth of a blast furnace, which is composed of anthracite powder, graphite powder, electrode powder and coal tar, and the weight percentage of the anthracite powder in the carbonaceous mud is 26% , the weight percentage of the graphite powder in the carbonaceous mud is 6%, the weight percentage of the electrode powder in the carbonaceous mud is 22%, and the balance is the coal tar. A kind of production technology of the improved carbonaceous mud that is used for repairing blast furnace hearth of the present invention is: at first weigh the weight of each component according to weight ratio, secondly, carry out dry mixing with anthracite coal powder, graphite powder and electrode powder, fully After mixing, coal tar is added for kneading to obtain the improved carbonaceous slurry for repairing the hearth of a blast furnace. This product is suitable for use when the gap in the lining of the blast fur...

Embodiment 3

[0024] The present invention is an improved carbonaceous mud for repairing the hearth of a blast furnace, which is composed of anthracite powder, graphite powder, electrode powder, pitch and coal tar, and the weight percentage of the anthracite powder in the carbonaceous mud is: 26%, the weight percentage of the graphite powder in the carbonaceous mud is 6%, the weight percentage of the electrode powder in the carbonaceous mud is 22%, and the pitch is in the The weight percentage in the carbonaceous mud is 0.25%, and the balance is the described coal tar. A kind of production technology of the improved carbonaceous mud that is used for repairing blast furnace hearth of the present invention is: at first weigh the weight of each component according to weight ratio, secondly, carry out dry mixing with anthracite coal powder, graphite powder and electrode powder, fully After mixing, coal tar and pitch are added for mixing to obtain the improved carbonaceous slurry for repairing t...

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Abstract

The invention relates to an improved carbonaceous mud that is used for repairing a blast furnace hearth, which comprises anthracite culm, graphite powder, electrode powder and coal tar. According to weight percentage, the carbonaceous mud comprises 25 percent to 28 percent of the anthracite culm, 5 percent to 8 percent of the graphite powder, 13 percent to 23 percent of the electrode powder, and the residue is the coal tar. The carbonaceous mud has indentation property, on the premise of no destruction to the liner refractory structure of the side wall of the furnace hearth, the indentation material can be pressed and sent to the furnace smoothly by using certain pressure, and the indentation rate of the carbonaceous mud at the side wall of the furnace hearth and the iron notch can reach 100 percent. The carbonaceous mud can be pressed-in smoothly whether the liner seam is small or big.

Description

Technical field: [0001] The invention relates to the field of metallurgy, in particular to a refractory material, in particular to a lining material for a blast furnace hearth side wall, and in particular to an improved carbonaceous mud used for repairing a blast furnace hearth. Background technique: [0002] In the metallurgical industry, the hearth lining of the blast furnace is the main factor determining the life of the blast furnace. In the middle and late stages of the blast furnace operation, the temperature of the side wall of the hearth is often increased due to the failure of the lining of the side wall of the hearth, or the thinning of the carbon brick lining, or the cracks in the lining of the side wall. Among them, when there is a small gap in the side wall of the hearth, the high-temperature gas flow will use the gap as a channel, which will further expand the gap and affect the stability of the overall structure; in addition, the gap also greatly reduces the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 王立辉卓龙妙万强励军王炜薛娜
Owner 上海盛江特种耐火材料有限公司
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