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Automatic pouring slurry for coke oven top

An automatic and grouting technology, applied in the field of grouting materials, can solve the problems of poor self-flow, poor sealing, and serious sedimentation of the grouting, and achieve the effects of good fluidity, prevention of smoke and fire, and excellent anti-settling performance.

Active Publication Date: 2020-11-17
NANJING HUYOU METALLURGY MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the dry coal material will decompose at 300-400 °C, the sealing effect cannot be effectively guaranteed; the commonly used refractory clinker, clay and water mixed castables are loose and poor in sealing performance, and the problem of smoke and fire on site is obvious
Moreover, the self-flowing properties of the grouting material are poor, requiring manual operation; the grouting material settles seriously, and must be stirred continuously during manual grouting. At present, there are many problems in the grouting material used in the prior art, which affects the sealing effect and automatic grouting operation

Method used

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  • Automatic pouring slurry for coke oven top

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The automatic grouting material for coke oven top is composed of aggregate and water. The weight ratio of aggregate to water is 1:1.1. When the grouting aggregate is used on site, it is first prepared as slurry. The percentage by weight includes 30% of refractory clinker powder, 30% of refractory clay, 35% of refractory pottery clay, 3.5% of plasticizer, and 1.5% of sodium tripolyphosphate. The refractory clinker powder is clinker powder prepared by calcining 70wt% kaolin and 30wt% high alumina bauxite at a high temperature of 1300°C. The plasticizer is 50% by mass of sodium silicate and 50% of aluminum phosphate, and the suspending agent is sodium tripolyphosphate.

[0028] When weighing the aggregate, the aggregate needs to be classified and crushed. After crushing, the particle size composition is as follows: the particle size with a diameter of <0.090mm accounts for 100%, the particle size with a diameter of <0.063mm accounts for 69%, and the particle size with a dia...

Embodiment 2

[0031] The automatic grouting material is used for the roof of the coke oven. The automatic grouting material is composed of aggregate and water. The weight ratio of aggregate to water is 1:1.4. The percentage by weight includes 50% of refractory clinker powder, 20% of refractory clay, 28.5% of refractory pottery clay, 1% of plasticizer, and 0.5% of sodium tripolyphosphate. The refractory clinker powder is clinker powder prepared by calcining 90wt% kaolin and 10wt% high alumina bauxite at a high temperature of 1500°C, and the plasticizer is 68% sodium silicate and 32% aluminum phosphate in mass percentage.

[0032] When weighing the aggregate, the aggregate needs to be graded and crushed. After crushing, the particle size composition is as follows: the particle size with a diameter of <0.090mm accounts for 100%, the particle size with a diameter of <0.063mm accounts for 75%, and the particle size with a diameter of <0.045mm accounts for 45%. , crushed and mixed evenly to make ...

Embodiment 3

[0035]The automatic grouting material is used for the top of the coke oven. The automatic grouting material is composed of aggregate and water. The weight ratio of aggregate to water is 1:1.2. The percentage by weight includes 45% of refractory clinker powder, 15% of refractory clay, 35% of refractory pottery clay, 1% of plasticizer, and 4% of sodium tripolyphosphate. The refractory clinker powder is clinker powder prepared by calcining 85wt% kaolin and 15wt% high alumina bauxite at a high temperature of 1400°C, and the plasticizer is 64% sodium silicate and 36% aluminum phosphate in mass percentage.

[0036] When weighing the aggregate, the aggregate needs to be graded and crushed. After crushing, the particle size composition is as follows: the particle size with a diameter of <0.090mm accounts for 100%, the particle size with a diameter of <0.063mm accounts for 72%, and the particle size with a diameter of <0.045mm accounts for 50%. , crushed and mixed evenly to make grouti...

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Abstract

The invention provides automatic pouring slurry for a coke oven top. The automatic pouring slurry is composed of aggregate and water, wherein the weight ratio of the aggregate to the water is 1: (1.1-1.4), and the aggregate comprises, by weight, 30-50% of refractory clinker powder, 15-30% of refractory fine aggregate, 12-35% of refractory pottery clay, 1-3.5% of a plasticizer and 0.5-4% of a suspending agent. The automatic pouring slurry for the coke oven top is used for an automatic slurry pouring machine to seal a coal charging hole cover and a hole seat, can effectively prevent a coal charging hole from smoking and flaming; the pouring slurry can be kept in a storage tank for 24 hours without layering and precipitating, has excellent anti-settling performance and good flowability, and is suitable for automatic slurry pouring operation of the slurry pouring machine.

Description

technical field [0001] The invention belongs to the field of grouting materials used in the production of coke ovens, and in particular relates to an automatic grouting material for the roof of a coke oven. Background technique [0002] The environmental protection requirements of the coking industry are becoming more and more stringent, and the coal charging hole on the top of the coke oven is one of the leakage points of smoke and dust. Smoke pollutants and toxic gases generated during the coking process of the coke oven easily escape from the gap between the coal charging hole seat and the hole cover, causing environmental pollution. In order to reduce the discharge of pollutants from the top of the coke oven, sealing materials are usually used to seal the gap between the coal charging hole seat and the hole cover in coke oven production, which is an effective method to prevent the discharge of coke oven pollutants. [0003] In production, coal powder, refractory clinker...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B33/04
CPCC04B35/66C04B33/04C04B2235/3217C04B2235/3427C04B2235/447C04B2235/5436
Inventor 武良辰武兆乾
Owner NANJING HUYOU METALLURGY MACHINERY MFG
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