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Handling method for metallurgy solid waste

A solid waste and treatment method technology, applied in the field of iron and steel metallurgy, can solve the problems of poor treatment effect of metallurgical solid waste dust, unsatisfactory treatment effect, low resource utilization rate, etc., to prevent sticking, reduce fuel consumption, and promote reduction separation effect

Pending Publication Date: 2019-06-21
班友合
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current production process only removes zinc from metallurgical solid waste dust into the flue gas, and does not remove and collect potassium, sodium and other elements, resulting in the presence of potassium, sodium and other alkali metal elements in the metallurgical waste dust. In solid waste dust, the treatment effect is not ideal and the resource utilization rate is low
[0004] Therefore, it is an urgent problem for those skilled in the art to provide a treatment method for metallurgical solid waste to solve the phenomenon of poor metallurgical solid waste dust treatment effect and low resource utilization rate.

Method used

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  • Handling method for metallurgy solid waste
  • Handling method for metallurgy solid waste

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1 of the present invention discloses a method for processing metallurgical solid waste, which specifically includes the following steps:

[0045] (1) first crush and grind metallurgical solid waste, and sieve through a 6mm sieve;

[0046](2) Weigh metallurgical solid waste, calcium-containing oxides and magnesium-containing oxides according to the mass ratio of 80:10:10; among them, metallurgical solid waste includes environmental dust removal ash, sintering dust, pellet dust, blast furnace dust , Converter dust, electric furnace dust, steel slag, steel rolling dust, iron scale, iron red, coking dust and other solid waste, calcium oxides include quicklime, limestone, dolomite One or more mixtures, magnesium-containing oxides include single or multiple mixtures of magnesite, light burnt dolomite, serpentine, and dolomite.

[0047] (3) The mixture is dried and dehydrated, and the water content of the dried mixture is 2 wt%.

[0048] (4) Carry out pre-reductio...

Embodiment 2

[0055] Embodiment 2 of the present invention discloses a method for processing metallurgical solid waste, which specifically includes the following steps:

[0056] (1) first crush and grind metallurgical solid waste, and sieve through a 6mm sieve;

[0057] (2) Weigh metallurgical solid waste, calcium-containing oxides and magnesium-containing oxides respectively according to the mass ratio of 85:7:8; among them, metallurgical solid waste includes environmental dust removal ash, sintering dust, pellet dust, blast furnace dust , Converter dust, electric furnace dust, steel slag, steel rolling dust, iron scale, iron red, coking dust and other solid waste, calcium oxides include quicklime, limestone, dolomite One or more mixtures, magnesium-containing oxides include single or multiple mixtures of magnesite, light burnt dolomite, serpentine, and dolomite.

[0058] (3) The mixture is dried and dehydrated, and the water content of the dried mixture is 2 wt%.

[0059] (4) Carry out ...

Embodiment 3

[0066] Embodiment 3 of the present invention discloses a method for processing metallurgical solid waste, which specifically includes the following steps:

[0067] (1) first crush and grind metallurgical solid waste, and sieve through a 6mm sieve;

[0068] (2) Weigh metallurgical solid waste, calcium-containing oxides and magnesium-containing oxides respectively according to the mass ratio of 90:5:5; among them, metallurgical solid waste includes environmental dust removal ash, sintering dust, pellet dust, blast furnace dust , Converter dust, electric furnace dust, steel slag, steel rolling dust, iron scale, iron red, coking dust and other solid waste, calcium oxides include quicklime, limestone, dolomite One or more mixtures, magnesium-containing oxides include single or multiple mixtures of magnesite, light burnt dolomite, serpentine, and dolomite.

[0069] (3) The mixture is dried and dehydrated, and the water content of the dried mixture is 2 wt%.

[0070] (4) Carry out ...

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Abstract

The invention discloses a handling method for metallurgy solid waste. The technological method uses metallurgy solid waste (metallurgy production environment dedusting ash, sintering dust, pelletizingdust, blast furnace dust, converter mud dust, electric furnace mud dust, steel slag and steel rolling mud solid waste and the like) as the main raw materials, and calcium-containing oxide, magnesium-containing oxide and non-coking coal are matched to perform iron bath type smelting reduction through a spraying mode to extract products like Fe, K, Na, Zn, Ti and V in the metallurgy solid waste. The dependence of pyrogenic attack of metallurgy solid waste on coke, sintering, pelletizing and agglomeration is removed really, one-step treatment of metallurgy solid waste is achieved, gradual separation is achieved, all elements are extracted, and thorough treatment is achieved. The whole method is simple and efficient, and industrial production is easy.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, and mainly relates to a treatment method for metallurgical solid waste. Background technique [0002] Traditional iron and steel enterprises will produce a large amount of metallurgical solid waste dust, scale and slag during sintering, pelletizing, ironmaking, steelmaking and steel rolling, accounting for more than 10% of the total steel output, which contains a large amount of iron and zinc , Potassium, titanium, vanadium, lead, silver, indium and other rare and precious metals have high recycling value. At present, the most important recycling method for metallurgical solid waste is to return it to sintering as an ingredient, but this method has obvious defects. Due to the large difference between the physical parameters of metallurgical solid waste and ore powder raw materials, it has great impact on the production technical indicators and product quality of sintered pellets...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B5/10C22B26/10C22B19/00C22B34/12C22B34/22C22B58/00C22B11/00C21B11/00C22B13/02
CPCY02P10/20
Inventor 班友合
Owner 班友合
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