Smoke-free micro-expansive anhydrous stemming

A technology of anhydrous taphole and micro-expansion, applied in the field of smokeless micro-expansion anhydrous tappet, which can solve problems such as shedding and damage of taphole, broken iron mouth, and easy penetration of slag and iron liquid, so as to improve high-temperature performance and stimulate The effect of low odor and high curing temperature

Inactive Publication Date: 2010-06-09
MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology

On the contact surface of the old and new clay, there will also be gaps due to the sintering and shrinkage of the new clay, so that the molten slag and iron liquid can easily penetrate into these gaps. When the iron hole is opened next time, under the strong erosion of the melt flow, the The gun mud is detached and damaged
In addition, the newly blocked gun mud is

Method used

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  • Smoke-free micro-expansive anhydrous stemming
  • Smoke-free micro-expansive anhydrous stemming

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with specific examples, and the following examples are only used to illustrate the present invention rather than limit the present invention.

[0020] Table 2 lists the raw materials, content measured in parts by mass, and main technical performance indicators of the smokeless micro-expanded waterless taphole clay of the present invention.

[0021] Table 2 each embodiment and performance

[0022]

[0023] The manufacture method of each embodiment is identical, and its method is as follows:

[0024] 1. First, weigh various refractory raw materials such as bauxite, corundum, clay, silicon carbide, coke, expansion agent, etc. according to the measurement ratio of parts by mass in Table 2, mix them evenly and put them in bags for later use.

[0025] 2. Pour the mixed raw materials into the test wet mill, add an appropriate amount of phenolic resin binder and mix for about 30 minutes. After the binder w...

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Abstract

The invention discloses smoke-free micro-expansive anhydrous stemming, comprising the following components in parts by weight: 10-30 parts of corundum, 15-25 parts of alumina, 10-20 parts of silicon carbide, 10-25 parts of coke, 15-25 parts of clay, 5-10 parts of expanding agent and 15-18 parts of phenolic resin binder. The invention has the advantages that: in the stemming using process, yellow smoke is not generated, pungent smell is less, and the used phenolic resin binder has higher curing temperature and can meet the use requirements of the stemming. Because the expanding agent is added, the stemming can generate micro-expansion at the high temperature so as to fill cracks generated due to inside and outside stresses and modify the high temperature using performance of the stemming.

Description

technical field [0001] The invention relates to a smokeless micro-expansion anhydrous taphole clay suitable for a taphole of a large-scale ironmaking blast furnace. Background technique [0002] Gun clay is one of the most important consumable materials in the operation of blast furnace. Its function is to fill in the tap hole when the blast furnace does not produce slag and iron solution, so that the tap hole can maintain a sufficient depth; Drilling, the iron slag solution is discharged out of the furnace through the tunnel, and the taphole of the blast furnace is repeatedly opened and filled every day. The average annual consumption of blast furnace mud in my country is 1,800 tons per blast furnace. There are more than 3,000 blast furnaces in my country, and the demand for blast furnace mud More than 5 million tons / year. [0003] The environmental protection of gun clay is mainly reflected in the choice of binder. At present, domestic and foreign blast furnace taphole anh...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 赵军范咏莲王强仲晓林李洪会刘兴平唐勋海张金燕李小伟周云鹏江山郑期波
Owner MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION
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