Method for preparing vertical intermediate-frequency furnace by integrally casting and compounding furnace pipe and thermal insulation layer

An intermediate frequency furnace and vertical technology, which is applied in the field of carbonization, cemented carbide sintering vertical intermediate frequency furnace integral casting composite furnace and the preparation of insulation layer, can solve the problems of inconvenient maintenance and replacement, inability to meet the carbonization process, etc., and achieve convenient The effect of maintenance and replacement, cost saving and energy consumption reduction

Inactive Publication Date: 2012-04-18
江西耀升钨业股份有限公司
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Problems solved by technology

[0002] At present, in tungsten powder carbonization and cemented carbide sintering furnaces, the furnace and heat-resistant insulation layer are all split structures, and the heat-resistant insulation layer is made of quartz sand and carbon black materials, so that the working temperature of the vertical intermediate frequency carbonization furnace does not exceed 1600°C, unable to meet the carbonization process with higher temperature requirements; at the same time, since the furnace and heat-resistant insulation layer are split structures, it is inconvenient to maintain and replace

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  • Method for preparing vertical intermediate-frequency furnace by integrally casting and compounding furnace pipe and thermal insulation layer
  • Method for preparing vertical intermediate-frequency furnace by integrally casting and compounding furnace pipe and thermal insulation layer

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Embodiment 1

[0017] see figure 1 , the present invention is a carbonization, cemented carbide sintering vertical intermediate frequency furnace integral casting composite furnace and insulation layer preparation method, the refractory furnace with zirconia as aggregate and aluminum oxide hollow ball as aggregate, coarse corundum The thick corundum hollow sphere filler layer with hollow spheres as aggregate and the zirconia hollow sphere insulation layer with zirconia hollow spheres as aggregate are sequentially compounded and integrally cast, and the preparation method is as follows:

[0018] Step 1: Refractory furnace ingredients: in the refractory furnace with zirconia as aggregate and alumina hollow spheres as aggregate, the mass percentage of each component is: alumina hollow sphere 40%, a~ZrO 2 Micropowder 35%, add phosphoric acid or aluminum dihydrogen phosphate solution, binder is a~ZrO 2 30% of the mass percentage of fine powder, the corresponding density is 2.4~2.5g / cm 3 ;

[...

Embodiment 2

[0026] see figure 1 , the present invention is an integrally cast composite furnace and insulation layer in a vertical intermediate frequency furnace for carbonization and tungsten carbide sintering, a refractory furnace with zirconia as aggregate and alumina hollow ball as The coarse corundum hollow ball filler layer with the ball as the aggregate and the zirconia hollow ball insulation layer with the zirconia hollow ball as the aggregate are sequentially composited and integrally cast, and the preparation method is as follows:

[0027] Step 1: Refractory furnace ingredients: In the refractory furnace with zirconia as aggregate and alumina hollow spheres as aggregate, the mass percentages of each component are: alumina hollow spheres 65%, a~ZrO 2 Micropowder 55%, add phosphoric acid or aluminum phosphate solution, binder is a~ZrO 2 35% of the mass percentage of fine powder, the corresponding density is 2.4~2.5g / cm 3 ;

[0028] Step 2: Filling layer ingredients: In the rou...

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Abstract

The invention belongs to the technical field of tungsten powder carbonized and cemented carbide sintered furnaces, and in particular relates to a method for preparing a vertical intermediate-frequency carbonized and cemented carbide sintered furnace by integrally casting and compounding a furnace pipe and a thermal insulation layer. The vertical intermediate-frequency carbonized and cemented carbide sintered furnace is produced by compounding and casting the fire-resistant furnace pipe in which zirconium oxide hollow spheres and alumina hollow spheres are taken as aggregate, a crude corundum hollow sphere packing layer in which crude corundum hollow spheres are as the aggregate, and a zirconium oxide hollow sphere thermal insulation layer in which the zirconium oxide hollow spheres are taken as the aggregate sequentially and integrally. As the compound furnace pipe and thermal insulation layer are integrally cast by using different fire-resistant materials, the working temperature of the vertical intermediate-frequency carbonized furnace is raised from 1,600 DEG C to 2,300 DEG C, the energy consumption of thermal equipment can be reduced greatly, and the vertical intermediate-frequency furnace is convenient to maintain and replace and saves cost.

Description

technical field [0001] The invention belongs to the technical field of a tungsten powder carbonization and cemented carbide sintering furnace, in particular to a method for preparing a carbonization and cemented carbide sintering vertical intermediate frequency furnace integral casting composite furnace and insulation layer. Background technique [0002] At present, in tungsten powder carbonization and cemented carbide sintering furnaces, the furnace and heat-resistant insulation layer are all split structures, and the heat-resistant insulation layer is made of quartz sand and carbon black materials, so that the working temperature of the vertical intermediate frequency carbonization furnace does not exceed 1600°C, which cannot meet the carbonization process with higher temperature requirements; at the same time, because the furnace and heat-resistant insulation layer are split structures, maintenance and replacement are inconvenient. Contents of the invention [0003] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/10C04B35/106C04B35/48C04B35/66
Inventor 郭名亮周毅
Owner 江西耀升钨业股份有限公司
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