Method for preparing wave-absorbing material by using industrial effluent rich in manganese iron

Abstract

The invention relates to an industrial effluent treatment method and particularly relates to a method for preparing a wave-absorbing material by using industrial effluent rich in manganese iron. The method comprises the following steps: 1, desilicication treatment; 2, drying; 3, component measurement and adjustment; 4, dry powder mixing; 5, presintering; 6, sanding; 7, pulping; 8, spray granulation and formation; 9, sintering. The industrial effluent treatment method provided by the invention can be used for sufficiently recycling manganese iron elements in an effluent, so that the problem of resource waste is solved; in addition, no harmful substances are discharged, so that no secondary pollution is caused, and the industrial effluent treatment method is very environment-friendly; a manganese zinc ferrite wave-absorbing material manufactured by using the method has the characteristics of high permeability, wide band and high electromagnetic wave absorption efficiency so as to be widely applied to various electronic products and national defence industry products.

Description

technical field [0001] The invention relates to a treatment method for industrial waste liquid, in particular to a method for manufacturing wave-absorbing materials from industrial waste liquid rich in ferromanganese. Background technique [0002] Many industrial waste liquids contain a large amount of ferromanganese and other elements. If these waste liquids are discharged directly into nature, it will not only be a huge waste of resources, but also cause environmental pollution. Therefore, it is necessary to treat these industrial waste liquids to process. [0003] In the prior art, the neutralization method is generally adopted for the treatment of industrial waste liquid, that is, the waste liquid is neutralized to neutrality, and then diluted and discharged. This waste liquid treatment method has the following defects: 1. The waste liquid cannot be 2. There are many harmful components in the treated waste liquid, which will cause secondary pollution after being dischar...

AI Technical Summary

Problems solved by technology

[0002] Many industrial waste liquids contain a large amount of ferromanganese and other elements. If these waste liquids are discharged directly into nature, it will not only be a huge waste of resources, but also cause environmental pollution. Therefore, it is necessary to treat these industrial waste liquids to process

[0003] In the prior art, the neutralization method is generally adopted for the treatment of industrial waste liquid, that is, the waste liquid is neutralized to neutrality, and then diluted and discharged. This waste liquid treatment method has the following defects: 1. The waste liquid cannot be The ferromanganese element in the manganese element is fully utilized, but the problem of resource waste is still not solved; 2. There are many harmful components in the treated waste liquid, which will cause secondary pollution after being discharged; 3. The treatment cost is high

At airports, flights are delayed due to electromagnetic wave interference; in hospitals, mobile phones often interfere with the normal work of various electronic medical instruments