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Internal lining casting material of industrial reaction furnace and lining-up method

A casting material and working lining technology, applied in the direction of overall lining, lining repair, fibrous filler, etc., can solve the problems of poor air erosion resistance, increased demolition workload, and increased cost, and achieve strong air erosion resistance, The construction method is simple and the life extension effect

Inactive Publication Date: 2007-12-26
西安秦翔科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The innermost working lining of the carbon black reaction furnace lining directly contacts the high-temperature airflow. The existing technology mainly uses chrome corundum bricks as the innermost working lining. 4 months, and when dismantling, the middle layer with good thermal insulation performance and the outer thermal insulation layer with light heat insulation should also be removed at the same time, which will increase the workload of dismantling and increase the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Including the lightweight heat-insulating outer insulation layer material of aluminum oxide hollow balls, the high-strength and high-aluminum middle layer material with good heat insulation performance, and the inner layer working lining casting material also includes 75% of fused dense corundum according to the mass ratio. Fused zirconia mullite 4%, chromium oxide 4%, zircon superfine powder 4%, aluminum oxide fine powder 9%, calcium aluminate cement 4%. The particle size gradation mass ratio of the inner working lining pouring material is as follows: the dense corundum with a particle size of 5-8mm should account for 12% of the total mass ratio, and the dense corundum with a particle size of 3-5mm should account for 12% of the total mass ratio , dense corundum with a particle size of 1-3mm should account for 19% of the total mass ratio, dense corundum with a particle size of 0-1mm should account for 25% of the total mass ratio, and dense corundum with a particle size of...

Embodiment 2

[0045] Including the lightweight heat-insulating outer insulation layer material of alumina hollow spheres, the high-strength and high-aluminum middle layer material with good heat insulation performance, and the inner layer working lining casting material also includes 77% of fused dense corundum according to the mass ratio. Fused zirconia mullite 3%, chromium oxide 4%, zircon superfine powder 3%, aluminum oxide micropowder 7%, calcium aluminate cement 6%; The mass ratio is as follows: dense corundum with a particle size of 5-8mm should account for 12% of the total mass ratio, dense corundum with a particle size of 3-5mm should account for 12% of the total mass ratio, and dense corundum with a particle size of 1-3mm should account for the total mass ratio 20% of the total mass ratio, 0 ~ 1mm particle size dense corundum should account for 26% of the total mass ratio, 50 ≤3μm particle size is 3%, aluminum oxide powder D 50 ≤5μm particle size is 7%, calcium aluminate cement is ...

Embodiment 3

[0053] Including the lightweight heat-insulating outer insulation layer material of alumina hollow spheres, the high-strength and high-aluminum middle layer material with good heat insulation performance, and the inner layer working lining casting material also includes 77% of fused dense corundum according to the mass ratio. Fused zirconia mullite 5%, chromium oxide 3%, zircon superfine powder 4%, aluminum oxide micropowder 6%, calcium aluminate cement 5%; The mass ratio is as follows: dense corundum with a particle size of 5-8mm should account for 14% of the total mass ratio, dense corundum with a particle size of 3-5mm should account for 14% of the total mass ratio, and dense corundum with a particle size of 1-3mm should account for the total mass ratio 17% of the total mass ratio, 0 ~ 1mm particle size dense corundum should account for 25% of the total mass ratio, 50 ≤3μm particle size is 4%, aluminum oxide powder D 50 ≤5μm particle size is 6%, calcium aluminate cement is ...

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Abstract

A casting material for the internal working liner of industrial reduction furnace is prepared from aluminium oxide for insulating layer, high-Al material for intermediate layer and the compact corundum, zirconium mullite, chromium oxide, superfine zircon powder, Al2O3 powder and calcium aluminate cement through weighing raw materials except calcium aluminate cement, stirring, loading in bag for future use, casting external insulating layer, casting mediate layer and casting working liner, which includes proportionally mixing said mixture with calcium aluminate cement, adding water, stirring, moulding, vibrating, demoulding, natural curing and baking.

Description

technical field [0001] The invention relates to an industrial reaction furnace lining refractory material, which is especially suitable for the working lining pouring material and the furnace lining method of the oil furnace carbon black furnace. Background technique [0002] Carbon black is one of the indispensable important chemical raw materials in the modern national economy. Among them, 90% are used in the rubber industry, and the rest are used in ink, paint, plastic, synthetic leather and other fields. Carbon black is of great significance to the development of national transportation, the realization of agricultural mechanization, and the improvement of people's material and spiritual civilization. [0003] Oil furnace carbon black is the most important production method in the contemporary carbon black industry. The lining of carbon black reaction furnaces in my country generally adopts a three-layer structure: the innermost layer with good high temperature performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D1/16F27D1/10C09C1/50
Inventor 王臻高云琴刘振平
Owner 西安秦翔科技股份有限公司