Preparation and Application of Thermal Spraying Ceramic Sealing Glaze at Coke Oven Charging Port

A technology of ceramic sealing and coal filling port, which is applied in the field of refractory materials, can solve problems such as time-consuming and labor-intensive cracks, and achieve the effect of firm bonding, high resistance to chemical erosion, and smooth surface

Active Publication Date: 2019-09-10
SHANDONG WANQIAO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some coke ovens that used glazed coal inlet door bricks in the early stage, if improvement is needed, the coal inlet needs to be knocked down and rebuilt, which is not only time-consuming and laborious, but also the new coal inlet is easy Cracks appear between the furnace body and the original furnace body during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Preparation of borate composite solvent: formula range: 39 parts of borax, 20 parts of zinc oxide, 19 parts of quartz powder, 8 parts of potash, and 4.5 parts of slaked talc; mix the ingredients according to the formula for 16 minutes and then melt at a high temperature of 1000 ℃. Then water quenched to obtain a composite borate saturated solvent;

[0022] 2) Preparation of thermal spray glaze: formula range: 35 parts of compound borate saturated solvent prepared in step 1), 25 parts of kaolin, 25 parts of quartz powder, 15 parts of zircon powder, 3.5 parts of calcite, 3.5 parts of talc powder, three parts 1.1 parts of sodium polyphosphate; after mixing the ingredients evenly according to the proportion, add 45% of the total mass of the glaze raw materials, and grind for 2 hours to control the particle size to be less than 10μm 80%, and more than 50μm 2% to obtain the glaze;

[0023] 3) The pressure spraying method of spraying machine is used, and the pressure is con...

Embodiment 2

[0027] 1) Preparation of borate composite solvent: formula range: 37 parts of borax, 22 parts of zinc oxide, 17 parts of quartz powder, 8 parts of potash, 4 parts of slaked talc; mix the ingredients according to the formula for 18 minutes and then melt at a high temperature of 1020 ℃. Then water quenched to obtain a composite borate saturated solvent;

[0028] 2) Preparation of thermal spray glaze: formula range: 34 parts of compound borate saturated solvent, 27 parts of kaolin, 24 parts of quartz powder, 16 parts of zircon powder, 3 parts of calcite, 4 parts of talc powder, 3 parts of calcite prepared in step 1) 1 part of sodium polyphosphate; after mixing the ingredients according to the proportion, add 55% of the total mass of the glaze raw materials, and grind for 3.5 hours to control the particle size to be less than 10μm 80%, and more than 50μm 2% to get the glaze;

[0029] 3) The pressure spraying method of spraying machine is used, and the pressure is controlled at 0.4...

Embodiment 3

[0033] 1) Preparation of borate composite solvent: formula range: 42 parts of borax, 18 parts of zinc oxide, 21 parts of quartz powder, 7 parts of potash, and 5 parts of slaked talc; after mixing the ingredients according to the formula for 17 minutes, they are melted at a high temperature of 970 ° C, and then Water quenching to obtain a composite borate saturated solvent;

[0034] 2) Preparation of thermal spray glaze: formula range: 35 parts of compound borate saturated solvent prepared in step 1), 24 parts of kaolin, 27 parts of quartz powder, 14 parts of zircon powder, 4 parts of calcite, 3 parts of talcum powder, three parts 1.2 parts of sodium polyphosphate; after mixing the ingredients according to the proportion, add 45% water of the total mass of the glaze raw materials, and grind for 2.5 hours to control the particle size to be less than 10μm 80%, and more than 50μm 2% to obtain the glaze;

[0035] 3) The pressure spraying method of spraying machine is used, and the ...

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Abstract

The invention discloses a preparation method and a use method of thermally-sprayed ceramic seal glaze for a coal feeding port of a coke oven, and belongs to the technical field of refractory materials. The preparation method is characterized in that firstly, materials are prepared according to a formula, mixed, subjected to high-temperature melting at 950 DEG C-1050 DEG C and then subjected to water quenching, and a composite borate saturated solvent is obtained; then, 30-40 parts of the composite borate saturated solvent, 20-30 parts of kaolin, 20-30 parts of quartz powder, 10-20 parts of zircon powder, 1-6 parts of calcite, 1-6 parts of talcum powder and 0.5-1.5 parts of sodium tripolyphosphate are ground for 2-4 h by adding water, and the thermally-sprayed ceramic seal glaze is obtained. The use method is characterized in that spraying is carried out with a spraying method till the glaze surface thickness is 0.4 mm-1.5 mm, and heat preservation is carried out with the temperature controlled to be 950 DEG C-1150 DEG C. In cooperation with the use method, the glaze can form a ceramic glaze layer on the working face of bricks at a low temperature and also can permeate deep into the bricks to be combined with the bricks into a whole, and the glaze layer never sheds after being formed.

Description

technical field [0001] The invention discloses a preparation and use method of thermal spraying ceramic sealing glaze of a coke oven coal feeding port, and belongs to the technical field of refractory materials. Background technique [0002] Coke oven, a furnace usually made of refractory bricks and refractory blocks, a kiln that uses coal to make coke. It is the main thermal equipment for coking. The coal feeding port is an important part of the coke oven. Coal of various specifications enters the coke oven carbonization chamber through the coal feeding port to produce coke for ironmaking. At present, the coal feeding port of coke oven is generally made of silicon-alumina refractory material. Under normal working conditions, tar, carbon particles, etc. are produced, which are seriously eroded to the bricks. Coal feeding is not smooth, manual cleaning is difficult, and normal operation is affected. [0003] In the prior art, the above problems can be solved by using a fur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24C03C8/20C04B41/86
Inventor 钱虎林邱全山汪开保徐安东李强张新年钱玉东高建立常鑫
Owner SHANDONG WANQIAO GROUP
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