Aluminum electrolysis dangerous solid waste comprehensive treatment method and resource utilization

A technology of comprehensive treatment and treatment method, which is applied in the field of comprehensive treatment method and resource utilization of aluminum electrolysis hazardous solid waste, can solve the problems of animal and plant hazards, environmental pollution, etc., and achieve strong dissolution of oxides, cost reduction, and low production cost Effect

Inactive Publication Date: 2018-01-26
陕西泰鑫有色金属综合利用有限公司
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  • Application Information

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Problems solved by technology

Due to the influence of various factors, carbon slag, waste alumina mixture containing alumina, silicon oxide, and fluoride (electrolyte) will inevitably be produced during the production process of aluminum electrolysis, planing charge and waste lining of the elect

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  • Aluminum electrolysis dangerous solid waste comprehensive treatment method and resource utilization

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Embodiment 1

[0063] This embodiment relates to a comprehensive treatment method for aluminum electrolysis hazardous solid waste; the method includes the following steps:

[0064] Step 1: firstly store the recovered aluminum electrolytic solid waste in a classified manner, and take samples for testing to obtain data on the content of renewable resources and related substances;

[0065] Step 2: Preliminary selection, magnetic separation, crushing, impurity removal, and iron removal are carried out on the recovered waste alumina solid waste mixture containing aluminum, silicon, and fluorine; After the waste alumina mixture is processed in step 2, it is prepared into a composite material with carbon slag and electrolyte powder obtained by flotation of spent cathode blocks in a certain proportion; then the same amount of clean alumina is transported to the smelting reduction furnace for Smelting and reduction, sucking out the silicon-aluminum alloy and taking out the electrolyte, casting the si...

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Abstract

The invention provides an aluminum electrolysis dangerous solid waste comprehensive treatment method and resource utilization. According to the aluminum electrolysis dangerous solid waste comprehensive treatment method, other solid waste, except for waste anodes and waste aluminum dust, of aluminum electrolysis can be recycled, treatment processing is carried out through multiple procedures of primary election impurity removal, magnetic separation iron removal, flotation carbon removal, smelting reduction and the like, all aluminum electrolysis solid waste is effectively treated, renewable resources are all comprehensively utilized, and finally aluminum-silicon alloy products, electrolyte products for aluminum electrolysis, fuel powdered carbon products and the like are produced; and solidwaste treatment of the aluminum electrolysis industry is achieved, valuable resources containing aluminum, silicon, fluorine and the like are recycled and reutilized, and the good aims of protectingthe environment, saving resources and creating benefits are achieved.

Description

technical field [0001] The invention belongs to the fields of aluminum electrolysis solid waste treatment and resource utilization and aluminum metallurgy, and in particular relates to a comprehensive treatment method and resource utilization of aluminum electrolysis hazardous solid waste. Background technique [0002] Electrolytic aluminum solid waste treatment and comprehensive utilization of resources to produce cast silicon-aluminum alloys and electrolytes for aluminum electrolysis is an effective way to control the pollution of electrolytic aluminum solid waste and improve the environment in terms of environmental protection; for the metallurgical industry, it has opened up A new low-cost source of aluminum alloys and electrolytes; in terms of mineral resources, the use of aluminum electrolysis solid waste to extract silicon aluminum alloys and electrolytes is undoubtedly equivalent to adding a lot of aluminum, silicon, and fluorite (fluorine) mines, alleviating the need...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C22B7/00C25C3/06
CPCY02P10/20Y02W30/20
Inventor 李玉金黄朝清任海军钱宏发王义达
Owner 陕西泰鑫有色金属综合利用有限公司
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