A kind of automatic grouting material for coke oven coal charging hole

Abstract

The invention discloses an automatic-casting material for coke oven coal loading holes, wherein the automatic-casting material comprises, by weight, 82-92% of pyrophyllite, 3-10% of expanded vermiculite, 2-5% of bentonite, 1-4% of silicon micro-powder, and 0.5-1.5% of fireproof fiber. The automatic-casting material of the present invention has advantages of good construction performance, good application performance, good high-temperature resistance, easy uncovering, no corrosion on other equipment, no influence on the quality of coke after the falling of the material into the coke oven, and the like.

Description

technical field [0001] The invention relates to a grouting material used in coking production, in particular to an automatic grouting material used for coal charging holes on coke oven equipment. Background technique [0002] Due to increasingly stringent environmental protection requirements, major companies and enterprises engaged in coking production are faced with the problem of reducing pollution caused by discharge and leakage of coke oven coal charging holes. For a long time, most coke oven roofs have been using coal powder, refractory clinker, clay and water to solve the problem of sealing the coal charging hole of the coke oven, that is, tamping dry coal or injecting hydrated coal into the gap between the coal charging hole cover and the seat. Coal slurry or mixed with clay and clinker, and then manual pouring operation. However, due to the loose material and poor sealing performance in actual operation, when the temperature of the furnace cover gap is below 800°C,...

AI Technical Summary

Problems solved by technology

In addition, the clay will decompose near 70°C and 500°C, and the free water and structural water will be lost after decomposition, which will also cause certain shrinkage and cracking of the slurry

Although the slurry of this technology has a better effect than the earlier sealing materials using coal powder or clay, the sealing effect of the slurry is limited due to insufficient expansion, and it still cannot fully meet the requirements of mechanized automatic grouting

The materials used on site in the prior art do not have self-flowing properties and can only be operated manually; the slurry settles seriously and must be stirred continuously during manual grouting; and due to the unreasonable composition of the materials in the prior art, many Cracks, smoke pollution on site are also relatively obvious, so the grout used in the prior art faces many problems

Images