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Treatment process of aluminum ash for producing brown fused alumina

A processing process and technology for aluminum ash, applied in the field of processing technology for producing aluminum ash for brown corundum, can solve the problems of poor performance, low alumina content, and high impurity content in brown corundum, and reduce energy consumption, reduce impurity content, and reduce smelting. effect of time reduction

Active Publication Date: 2013-08-28
洛阳智源再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of poor performance caused by high impurity content and low alumina content in brown corundum produced by using aluminum ash in the prior art, the present invention provides a treatment process for producing brown corundum with aluminum ash. Aluminum ash reduces the content of impurities and increases the content of alumina. Using this aluminum ash to produce brown corundum not only reduces the consumption of raw materials and saves energy, but also increases the content of alumina in the finished product, reducing silicon, The content of iron and carbon improves the wear resistance, strength and high temperature resistance of the product

Method used

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  • Treatment process of aluminum ash for producing brown fused alumina

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Effect test

Embodiment 1

[0028] The processing technology for producing brown corundum aluminum ash comprises the following steps:

[0029] 1) According to the weight ratio, put 1 part of aluminum ash with a fineness below 150 mesh into 2 parts of hot water at 90°C and quickly transfer it to a container connected to the outside world for 6 hours, and set aside;

[0030] 2) Drain the water in the container, and add 90°C hot water equal to the amount of the drained water to soak for 14 hours, keep the water temperature at 90°C during soaking and stir to prevent the aluminum ash in the water from depositing, and set aside;

[0031] 3) Separate the aluminum ash in step 2) and rinse with water at a water flow rate of 3m / min, then filter with a vacuum filter and dry the obtained aluminum ash at 80°C until the water content is lower than 20% is to complete the treatment of aluminum ash.

Embodiment 2

[0033] The processing technology for producing brown corundum aluminum ash comprises the following steps:

[0034] 1) According to the weight ratio, put 1 part of aluminum ash with a fineness below 150 mesh into 5 parts of hot water at 100°C and quickly transfer it to a container connected to the outside world for 10 hours, and set aside;

[0035] 2) Drain the water in the container, add 100°C hot water equal to the amount of water to soak for 2 hours, keep the water temperature at 100°C during soaking, and set aside;

[0036] 3) Separate the aluminum ash in step 2) and rinse with water at a water flow rate of 6m / min, then filter with a vacuum filter and dry the obtained aluminum ash at 110°C until the water content is lower than 20% is to complete the treatment of aluminum ash.

Embodiment 3

[0038] The processing technology for producing brown corundum aluminum ash comprises the following steps:

[0039] 1) According to the weight ratio, put 1 part of aluminum ash with a fineness below 150 mesh into 3.5 parts of hot water at 95°C and quickly transfer it to a container connected to the outside world for 8 hours, and set aside;

[0040] 2) Drain the water in the container, and add 95°C hot water equal to the amount of the drained water to soak for 8 hours, keep the water temperature at 95°C during soaking, and set aside;

[0041] 3) Separate the aluminum ash in step 2) and rinse with water at a water flow rate of 4.5m / min, then filter with a vacuum filter and dry the obtained aluminum ash at 95°C until the water content is low At 20%, the processing of aluminum ash is completed.

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Abstract

The invention relates to a treatment process of aluminum ash for producing brown fused alumina. The treatment process comprises the following steps of: adding aluminum ash into hot water, and then putting the mixture into a container, which is communicated with the outside, to react for a period of time; discharging the hot water in the plastic container, adding hot water which is equal in weight with the discharged water, and standing for a period of time; separating the aluminum ash out, and rinsing the aluminum ash with water; and filtering by using a vacuum filter, and drying the obtained aluminum ash to finish the treatment of the aluminum ash. After the aluminum ash is treated by using the treatment process, the impurities are removed, the content of aluminum oxide is improved, low-temperature smelting is realized, the content of aluminum oxide in a product is 96.5%, the hardness and abrasion resistance of a product are greatly improved, a carbon source is not introduced, the carbon content in the product is greatly reduced, and the high-temperature resistance of the product is improved.

Description

technical field [0001] The invention relates to the production field of brown corundum materials, in particular to a treatment process for producing brown corundum aluminum ash. Background technique [0002] Brown corundum is made of bauxite and coke (anthracite) as the main raw materials. It is smelted at high temperature in an electric arc furnace. The abrasive tools made of it are suitable for grinding metals with high tensile strength, such as various general steels. , malleable cast iron, hard bronze, etc., and can also manufacture advanced refractory materials. [0003] Brown corundum is composed of α-alumina grains, which are stuck together by a small amount of glassy slag. Most of the glassy slag is composed of silica and titanium dioxide. α-alumina affects the hardness and hardness of brown corundum materials. The melting point, glassy slag gives brown fused alumina its toughness and resistance to breakage. Due to the low solubility of glassy slag in α-alumina, if...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/626
Inventor 智国彪智利彪智灿彪
Owner 洛阳智源再生资源有限公司
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