Steel and iron slag micro-powder and production method thereof

A production method and technology of iron and steel slag, which is applied in the field of steel slag composite micropowder and its production, can solve the problems of large fluctuations in tailing slag composition and increase the difficulty of utilization, and achieve the effect of high value and high activity

Inactive Publication Date: 2015-03-25
PANZHIHUA HUANYE METALLURGICAL SLAG DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, since the proportion of slag steel and slag iron is not fixed when entering the furnace, the composition of the discharged tailing slag fluctuates greatly, which increases the difficulty of utilization

Method used

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  • Steel and iron slag micro-powder and production method thereof
  • Steel and iron slag micro-powder and production method thereof
  • Steel and iron slag micro-powder and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] A steel mill uses the ratio in Table 1 for batching, and each furnace uses the following raw materials for production.

[0030] Table 1 raw material ingredient list

[0031]

[0032] The tailing slag produced after the smelting of steel slag and iron slag was subjected to water quenching treatment, and after iron removal, it was ground with a ball mill under the same conditions.

[0033] Table 2 Properties of iron and steel slag micropowder

[0034]

[0035]

[0036] As can be seen from the above table 2, the iron and steel slag micropowder prepared by the present invention has higher activity index and fluidity ratio, and the density, chloride ion content, sulfur trioxide content and ignition loss of the obtained iron and steel slag micropowder of the present invention And other indicators all meet the technical requirements of GB / T28293-2012 "Steel Slag Powder" and meet the production needs.

[0037] In summary, the method of the present invention not only ...

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Abstract

The invention belongs to the field of steel and iron smelting, in particular to steel and iron slag micro-powder and a production method thereof and aims to solve the technical problem of providing the iron slag micro-powder production method. The production method comprises the following steps: uniformly mixing raw materials steel slag and iron slag in proportion, putting the raw materials steel slag and iron slag into a smelting furnace for melting, and thus obtaining molten iron and tailings; carrying out water quenching treatment on the tailings, then removing iron and grinding, and thus obtaining the steel and iron slag micro-powder. The proportion according to the weight ratio is that the ratio of the steel slag tailings in steel slag to the blast furnace slag tailings in iron slag is 0.5 to 5. The method can prepare the steel and iron slag micro-powder with higher activity, so that a better choice is provided for the preparation materials of cement and concrete sand.

Description

technical field [0001] The invention belongs to the field of iron and steel smelting, and in particular relates to a composite micropowder of iron and steel slag and a production method thereof. Background technique [0002] High-titanium blast furnace slag is the blast furnace slag produced by smelting vanadium-titanium magnetite. Since the slag contains about 20% TiO 2 , the slag micropowder made from it has extremely low activity and cannot be used as an active material in cement or concrete. At present, the main method of utilization is to use slow cooling to process heavy slag. After crushing, screening, and magnetic separation, the iron-containing material is used as slag iron for steelmaking, and the remaining tailings are used as concrete sand and stone aggregates. Low, only about 30 yuan / ton. [0003] Steel slag is the solid waste produced by converter (electric furnace) steelmaking. After crushing, screening, and magnetic separation, the iron-containing materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/00C04B7/147C04B18/14
CPCY02P40/10Y02W30/91
Inventor 何奇杨志远吴斌杨胜利苏辉
Owner PANZHIHUA HUANYE METALLURGICAL SLAG DEV CO LTD
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