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Explosion-proof aluminum ash harmless disposal method

A disposal method and technology of harmless treatment, applied in the field of aluminum ash treatment, can solve problems such as hidden safety hazards, high cost, harsh conditions, etc.

Inactive Publication Date: 2020-07-17
河南绿泽环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional aluminum ash treatment method has relatively harsh conditions and high cost, and there is no specific treatment device for the generated waste gas, which has great potential safety hazards

Method used

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  • Explosion-proof aluminum ash harmless disposal method
  • Explosion-proof aluminum ash harmless disposal method

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Experimental program
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specific Embodiment 1

[0028] Specific embodiment one, please refer to figure 1 An explosion-proof aluminum ash harmless disposal method is characterized in that it comprises the steps of:

[0029] Aluminum ash powder mixed pulping:

[0030] Aluminum ash enters the 1# reaction tank through the receiving machine, elevator and metering bin, and the water in the reservoir is injected into the 1# reaction tank through the circulation pump. The elemental aluminum in the aluminum ash undergoes a hydrolysis reaction when it meets water, releasing flammable and explosive gas hydrogen and ammonia. The reaction formula is as follows:

[0031] 2Al+6H2O→2Al(OH)3+3H2↑

[0032] AlN+3H2O→Al(OH)3+NH3↑

[0033] Add drug A once to remove fluoride:

[0034] Wherein the side of the 1# reaction tank is added drug A in the slurry tank, the 1# reaction tank transports the slurry to the 2# reaction tank through the transfer pump, and the slurry tank transports the solution to the 2# reaction tank through the drug A pu...

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Abstract

The invention discloses an explosion-proof aluminum ash harmless disposal method. The method comprises the following steps of: carrying out the first reaction to remove fluorine by aluminum ash powder, adding material and water for mixed pulping, discharging after fluoride detection is qualified, and adding drug B for the second reaction to remove ammonia, adding drug C to adjust pH, filter pressing and dewatering, and returning filtrate to a reservoir for recycling. The method not only separates the solid-liquid aluminum powder slurry, but also effectively solves the explosion-proof problemsof ammonia and hydrogen, etc.; in short, the explosion-proof aluminum ash harmless disposal method reacts at a room temperature without heating by a heat source, and the drug is easy to purchase, theprocessing cost is low, the explosive gas hydrogen released in the reaction is specially treated, and the method steps are safe and reliable.

Description

technical field [0001] The invention relates to the technical field of aluminum ash treatment, in particular to an explosion-proof aluminum ash harmless disposal method. Background technique [0002] Aluminum ash is a product produced in the production of electrolytic aluminum, aluminum material processing or casting aluminum. A certain amount of aluminum ash will be produced in the overhaul of the tank and a certain amount of aluminum ash will be produced in the process of recycling waste aluminum and reprocessing it into products. The specific composition of aluminum ash varies depending on the production path, and it is mainly composed of a mixture of metallic aluminum, oxides and salt flux. Among them, metal aluminum exists under the coating of alumina and aluminum nitride. According to the difference of aluminum content, aluminum ash can be divided into primary aluminum ash and secondary aluminum ash. Aluminum ash contains aluminum and various valuable elements, mainl...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00
Inventor 赵海洋郑黎闫跃跃
Owner 河南绿泽环保科技有限公司
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