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Refractory castable, prepared from waste high tension electrical porcelain, for garbage incinerator and method of refractory castable

A waste incinerator and refractory castable technology, which is applied in the field of monolithic refractory materials, can solve the problems of complex preparation process, long production cycle and high raw material cost, and achieve the effects of simple process, high service temperature and long service life

Inactive Publication Date: 2018-09-21
无锡远能耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this method is mainly reflected in: (1) the raw material cost of this method is higher; (2) Cr 2 o 3 It is easy to transform into harmful hexavalent chromium, and the use of chromium-containing materials should be avoided; (3) The preparation process is complicated and the production cycle is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The refractory castables for waste incinerators prepared from waste high-voltage electric porcelain include the following raw materials, and the raw materials are combined according to the following mass fractions:

[0025] Firstly, 60.0 wt% of high voltage ceramic aggregate, 14.0 wt% of high voltage ceramic fine powder, 7.0 wt% of sintered corundum fine powder, 4.0 wt% of zircon fine powder and 5.0 wt% of alumina sol and aluminate cement As the raw material, add 4.0wt% water of the raw material, mix and stir for 2-3 minutes, and cast into shape; then dry at 100-120°C for 8-16 hours, and keep warm at 1300-1350°C for 2-3 hours, that is Obtain refractory castables for waste incinerators.

[0026] The refractory castables for waste incinerators prepared according to this example are tested: the bulk density is 2.35~2.40g / cm 3 ; The apparent porosity is 11.0~12.0%; the compressive strength at room temperature is ≥95MPa; the flexural strength at room temperature is ≥20MPa. ...

Embodiment 2

[0028] A refractory castable for waste incinerators prepared from waste high-voltage electric porcelain, comprising the following raw materials, each raw material is combined according to the following mass fractions:

[0029] First, 65.0 wt% high voltage ceramic aggregate, 12.0 wt% high voltage ceramic fine powder, 6.0 wt% sintered corundum fine powder, 3.0 wt% zircon fine powder, 4.0 wt% Portland cement and silica sol As the raw material, add 5.0wt% water of the raw material, mix and stir for 2-3 minutes, and pour into molding; then dry at 100-120°C for 8-16 hours, and keep warm at 1350-1400°C for 3-4 hours, that is Obtain refractory castables for waste incinerators.

[0030]The refractory castables for waste incinerators prepared according to this example are tested: the bulk density is 2.40~2.45g / cm 3 ; The apparent porosity is 10.0~11.0%; the compressive strength at room temperature is ≥95MPa; the flexural strength at room temperature is ≥20MPa.

Embodiment 3

[0032] A refractory castable for waste incinerators prepared from waste high-voltage electric porcelain, comprising the following raw materials, each raw material is combined according to the following mass fractions:

[0033] Firstly, 75.0 wt% high voltage ceramic aggregate, 10.0 wt% high voltage ceramic fine powder, 5.0 wt% sintered corundum fine powder, 2.0 wt% zircon fine powder and 3.0 wt% binder were used as raw materials, and then added Mix 6.0wt% of the raw material with water, stir for 2-3 minutes, and cast into shape; then dry at 100-120°C for 8-16 hours, and keep warm at 1400-1450°C for 4-5 hours to obtain the waste incinerator Refractory castables.

[0034] The refractory castables for waste incinerators prepared according to this example are tested: the bulk density is 2.45~2.50g / cm 3 ; The apparent porosity is 9.0~10.0%; the compressive strength at room temperature is ≥95MPa; the flexural strength at room temperature is ≥20MPa.

[0035] The raw materials used i...

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Abstract

The invention particularly relates to a refractory castable, prepared from waste high tension electrical porcelain, for a garbage incinerator and a method of the refractory castable. The refractory castable is prepared by mixing 60.0 wt%-75.0 wt% of high tension electrical porcelain aggregates, 10.0 wt%-16.0 wt% of high tension electrical porcelain fine powder, 5.0 wt% to 8.0 wt% of sintered corundum fine powder, 2.0 wt%-5.0 wt% of zirconite fine powder, 3.0 wt%-6.0 wt% of binding agent, and 4.0 wt%-7.0 wt% of water, stirring for 2-3 minutes, and moulding by casting; and then drying for 8-16 hours at 100-120 DEG C, and preserving heat for 2-5 hours at 1,300-1,450 DEG C, the refractory castable for the garbage incinerator is obtained. The refractory castable and the method have the characteristics of simple process, resource conservation and environmental friendliness, and the obtained refractory castable for the garbage incinerator is high in wearing coefficient, high in mechanical strength, high in volume stability, high in corrosion resistance and relatively low in heat conductivity coefficient.

Description

technical field [0001] The invention belongs to the technical field of unshaped refractory materials, and in particular relates to a refractory castable for garbage incinerators prepared from waste high-voltage electric porcelain and a method thereof. Background technique [0002] High-voltage electric ceramic materials are widely used in high-voltage power transmission and transformation lines, which have been subjected to high voltage and external environment for a long time, and have the characteristics of high tolerance and high mechanical strength. Due to the cracks in the molding, drying and firing process of the high-voltage electric porcelain material or the excessive content of iron and titanium in the porcelain material, the dielectric properties of the porcelain body will not meet the standard, and then it will be eliminated as high-voltage electric porcelain waste; or in the use environment, it will withstand high-voltage current for a long time And harsh environ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/77C04B2235/96C04B2235/9607
Inventor 李淑静罗佳
Owner 无锡远能耐火材料有限公司
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