A method for producing wave-absorbing materials from industrial waste liquid rich in ferromanganese

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 method for treating industrial waste liquid, in particular to a method for manufacturing a wave absorbing material by utilizing industrial waste liquid rich in ferromanganese. Background technique [0002] Many industrial waste liquids contain a large amount of elements such as ferromanganese. If these waste liquids are directly discharged 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 be processed. [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 treated with The manganese and ferromanganese are fully utilized, but the problem of resource waste is still n...