Iron-containing mud and sintered return mine reuse method

Abstract

The present invention relates to a method for reutilization of iron-containing dust mud and agglomerate return mine, and is characterized by that it uses the agglomerate return mine as nucleus of pellet formation, and mixes it with iron-containnig dust mud and iron-containing waste material powder and stirs them, and utilizes water content being in iron-containing dust mud to make the exterior of agglomerate return mine by roll-covered with iron-containing dust mud and waste material powder to form a mixture material which possesses proper grain size and uniform component and can be reused by sinter plant. Said mixture material can be used as a sintering raw material, does not produce adhesion lumping phonomenon, and its sintering property is good.

Description

technical field [0001] The invention relates to a method for reusing metallurgical waste, in particular to a method for reusing iron-containing dust and sludge generated during metallurgical production and sintering returned ore. Background technique [0002] Over the years, the comprehensive utilization of iron-containing waste has been paid more and more attention by iron and steel enterprises. It can not only reduce the resource loss of enterprises, reduce the cost of slag discharge, but also reduce environmental pollution, but how to make these iron-containing waste convenient, fast and effective It is a long-term research topic for iron and steel workers to use it efficiently. [0003] The use of converter mud at home and abroad has the following methods: (1) Add the sintering ingredients after dehydration of the converter mud. The disadvantage of this method is: if it is completely dry, the consumption cost is high and the technology is difficult. When it is removed t...

AI Technical Summary

Problems solved by technology

[0003] The use of converter mud at home and abroad has the following methods: (1) Add the sintering ingredients after dehydration of the converter mud. The disadvantage of this method is: if it is completely dry, the consumption cost is high and the technology is difficult. When it is peeled off to about 20%, the amount used in the production process cannot be balanced due to bonding

(2) Use a pump to drive the converter mud into the mixture. The disadvantage of this method is that the pipeline is easily blocked due to the high viscosity of the mud, and because the south is humid, there are many rainy seasons, and the moisture content of raw materials is high, the usage is limited.

(3) Dehydrate the converter mud and press it into small bricks or water balls for steelmaking as coolant. This method has high cost, large initial investment, and limited usage

It can be seen that these methods have their own disadvantages, and the application effect is relatively poor.

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