Technique for producing miropowder from dregs of metallurgy

A production process and metallurgical slag technology, applied in the production process of metallurgical slag powder, can solve the problems of metallurgical slag polluting the environment, steel slag that is difficult to break and grind, and iron slag that is easy to break and grind, achieving performance change and no secondary pollution , the effect of high product activity

Inactive Publication Date: 2007-02-21
莱芜厚泽钢渣环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Metallurgical slag powder can be used as an admixture for cement and other building materials, which can effectively improve the performance of cement, and at the same time solve the problem of metallurgical slag pollution. The existing metallurgical slag powder includes steel slag powder and iron slag powder. Iron tailing slag is made by grinding raw materials. During the grinding process,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1. Select steel slag and iron slag to carry out step-by-step crushing, step-by-step iron removal, and magnetic separation respectively to obtain components such as lump steel, granular iron, wet-selected granular steel, dry-selected tailings, wet-selected tailings, granular iron, granular steel And block steel returns to smelting, and the tailings of dry selection and wet selection are used for standby;

[0012] II, according to the percentage by weight, steel tailings and iron tailings are mixed and dried in a ratio of 1:1;

[0013] III. Remove the iron from the mixed tailings after drying, and select the mixed material containing less than 1% iron to enter the tube mill. The tube mill will be improved to increase internal screening, activation ring and high-energy balls, etc. The device is used in combination with a high-frequency vibration grinder, using high-energy balls and activation ring technology for grinding. Through grinding and extrusion and collision betwee...

Embodiment 2

[0016] 1. Select steel slag and iron slag to carry out step-by-step crushing, step-by-step iron removal, and magnetic separation respectively to obtain components such as lump steel, granular iron, wet-selected granular steel, dry-selected tailings, wet-selected tailings, granular iron, granular steel And block steel returns to smelting, and the tailings of dry selection and wet selection are used for standby;

[0017] II, according to the percentage by weight, steel tailings and iron tailings are mixed and dried in a ratio of 1:1.5;

[0018] III. Remove the iron from the mixed tailings after drying, and select the mixed material containing less than 1% iron to enter the tube mill. The tube mill will be improved to increase internal screening, activation ring and high-energy balls, etc. The device is used in combination with a high-frequency vibration grinder, using high-energy balls and activation ring technology for grinding. Through grinding and extrusion and collision betw...

Embodiment 3

[0021] 1. Select steel slag and iron slag to carry out step-by-step crushing, step-by-step iron removal, and magnetic separation respectively to obtain components such as lump steel, granular iron, wet-selected granular steel, dry-selected tailings, wet-selected tailings, granular iron, granular steel And block steel returns to smelting, and the tailings of dry selection and wet selection are used for standby;

[0022] II, according to the percentage by weight, steel tailings and iron tailings are mixed and dried in a ratio of 1:4;

[0023] III. Remove the iron from the mixed tailings after drying, and select the mixed material containing less than 1% iron to enter the tube mill. The tube mill will be improved to increase internal screening, activation ring and high-energy balls, etc. The device is used in combination with a high-frequency vibration grinder, using high-energy balls and activation ring technology for grinding. Through grinding and extrusion and collision betwee...

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PUM

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Abstract

This invention discloses a technique for producing metallurgical residue micropowder. The technique comprises: mixing steel residue and iron residue and grinding. Grinding, pressing and collision between the two residues can change chemical bonds of the residues, thus changing their inner structures as well as properties. Therefore, co-ground micropowder is formed. The technique is energy saving and environmentally friendly, and the product has high activity and high compressive strength.

Description

technical field [0001] The invention relates to a production process of metallurgical slag micropowder, specifically, a production process of mixing and co-grinding steel slag and iron slag. Background technique [0002] Metallurgical slag powder can be used as an admixture for cement and other building materials, which can effectively improve the performance of cement, and at the same time solve the problem of metallurgical slag pollution. The existing metallurgical slag powder includes steel slag powder and iron slag powder. Iron tailing slag is made by grinding raw materials. During the grinding process, iron slag is easy to break and difficult to grind, and steel slag is difficult to break and hard to grind. The existing technology is to set up a micro-powder grinding process for a certain kind of metallurgical slag. Single grinding of steel slag or single grinding of iron slag, the process technology of mixing and co-grinding the two metallurgical slags is not recorded ...

Claims

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Application Information

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IPC IPC(8): C21B3/06B03C1/02B02C4/00
CPCY02P10/20Y02W30/50
Inventor 赵兴忠曹立月孟令和武文健
Owner 莱芜厚泽钢渣环保工程有限公司
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