A secondary recovery production line device for aluminum ash slag

Abstract

The invention provides a secondary recovery production line device for aluminum ash residues. The device mainly comprises a ball milling device, a separation tank, an aluminum ash separator, a cleaning / drying device, reaction kettles, filtering devices, a high-temperature calcining furnace, an electrolytic cell, a negative fan device, a dust removing device and a PLC automatic controller; the outlet of the ball milling device is connected with the inlet of the separation tank through a guide pipe, the inlet of the aluminum ash separator is connected with the outlet of the separation tank through a guide pipe, the dust removing device is arranged at the upper port of the aluminum ash separator, the reaction kettles comprise a first reaction kettle, a second reaction kettle and a third reaction kettle, the filtering devices include a first filtering device, a second filtering device and a third filtering device, and electric appliance devices used by the PLC automatic controller are connected through wires. According to the device, resources can be effectively saved, the aluminum ash residues can be recycled to the maximum degree, and the resource utilization degree is higher.

Description

technical field [0001] The invention belongs to the technical field of industrial waste recycling, in particular to a secondary recycling production line device of aluminum ash. Background technique [0002] With the continuous expansion of the production scale of metal aluminum and aluminum alloy in my country, the production of aluminum ash slag also increases sharply. Aluminum ash is an important waste in the aluminum industry, in which the aluminum content can reach 10-80%. With the complex composition of aluminum ash, the alumina in it belongs to Al which is insoluble in acid and alkali. 2 o 3 , It is difficult to recycle by general metallurgical methods, so aluminum ash is usually used as raw materials for road construction materials, water purifiers, etc. This virtually wastes the aluminum resources therein. Recycling aluminum resources in aluminum ash can reduce costs, protect the environment, save energy and improve resource utilization, which has huge economic ...

AI Technical Summary

Problems solved by technology

[0003] Since aluminum ash is a toxic and harmful substance, the current direct landfill method causes great harm to the environment

Toxic metal elements (Se, As, Ba, Cd, Cr, Pb, etc.) in aluminum ash entering the soil and groundwater system will cause heavy metal pollution, etc.; the salt in the salt cake will accumulate in the soil and cause salinization; contact with water Afterwards, ammonia, hydrogen and methane will be produced, which is easy to cause fire; the arsenic hydrogen gas produced after the reaction of impurities such as arsenic and aluminum arsenide with water will not only pollute the air after being enriched in the production site, but also cause close contact. Acute arsine poisoning caused by acute arsine poisoning, the aluminum ash residue in the factory often contains industrial oil, etc. If it is not removed, it will affect the utilization of aluminum ash residue

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