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Comprehensive resource utilization method of electrolytic manganese slag and steel slag tailing mud

A technology of steel slag tailing sludge and electrolytic manganese slag is applied in the field of environmental engineering, which can solve the problems of huge energy consumption and lack of economy, and achieve the effect of solving the low comprehensive utilization rate and alleviating the shortage of resources.

Pending Publication Date: 2018-09-28
中冶武汉冶金建筑研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of this kind of concrete needs to dry manganese slag and steel slag in advance and grind them to the required fineness, which consumes a lot of energy. In addition, in order to stimulate the activity of waste materials, additional admixtures need to be added outside the system, which is not economical. sex

Method used

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  • Comprehensive resource utilization method of electrolytic manganese slag and steel slag tailing mud
  • Comprehensive resource utilization method of electrolytic manganese slag and steel slag tailing mud
  • Comprehensive resource utilization method of electrolytic manganese slag and steel slag tailing mud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An autoclaved aerated block produced by using electrolytic manganese slag and steel slag tailings, characterized in that the raw material components of the autoclaved aerated block and their weight percentages (in terms of dry weight of materials) are:

[0039]

[0040]

[0041] The measured moisture content of the raw materials is: 30% of the original electrolytic manganese slag, 15% of the original steel slag tailings, and 15% of the water-quenched blast furnace slag; the total water-cement ratio is 0.53.

[0042] Specific steps are as follows:

[0043] S1 mixed grinding

[0044] Weigh the original electrolytic manganese slag, original steel slag tailings, and water-quenched blast furnace slag according to the formula mass ratio, and add water with a total dry weight of 8% of the material to mix and grind for 45 minutes. The fineness reaches (0.045 square hole sieve residue) 14.9%. The pH value of the system was 10.5, and slurry A was prepared.

[0045] S2, ra...

Embodiment 2

[0064] An autoclaved aerated block produced by using electrolytic manganese slag and steel slag tailings, characterized in that the raw material components of the autoclaved aerated block and their weight percentages (in terms of dry weight of materials) are:

[0065]

[0066] The measured moisture content of the raw materials is: 28.5% of the original electrolytic manganese slag, 15% of the original steel slag tailings, and 12% of the water-quenched blast furnace slag; the total water-cement ratio is 0.53.

[0067] Specific steps are as follows:

[0068] S1 mixed grinding

[0069] Weigh the original electrolytic manganese slag, original steel slag tailings, and water-quenched blast furnace slag according to the formula mass ratio, and add water with a total dry weight of 9% of the material to mix and grind for 45 minutes. The fineness reaches (0.045 square hole sieve residue) 12.4%. The pH value of the system was 10.8, and slurry A was prepared.

[0070] S2, ratio measur...

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Abstract

The invention provides a production method for producing autoclaved aerated blocks by using raw electrolytic manganese slag and raw steel slag tailing mud. The autoclaved aerated blocks are produced from 30-50% of the electrolytic manganese slag, 10-30% of the steel slag tailing mud, 10-20% of water-quenched blast furnace slag, 5-15% of Portland cement, 5-10% of quicklime, 0.1-0.8% of an aluminumpowder paste (admixture) according to the following sequential steps: S1, performing mixed grinding; S2, proportioning; S3, slurrying; S4, stirring and pouring; S5, heating and standing; S6, cutting;S7, autoclaving; S8, aging. The aerated blocks produced by the production method can meet block standards of A1.5-A5.0, B09 and B10 classes in JC1062-2007 foam concrete block standards.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a method for comprehensive resource utilization of electrolytic manganese slag and steel slag tailings. Background technique [0002] Electrolytic manganese slag is the filter slag produced after the electrolysis of metal manganese. The particles are extremely fine and have a high water content. However, at present, domestic enterprises have not yet found an effective method to deal with electrolytic manganese slag. Most of the treatment methods today are simply to build dams and stack them. , Calcination or purification reuse, the cost is huge. [0003] Steel slag tailings are low-grade slag discharged from steelmaking converters or electric furnaces after crushing, grading, water washing, and magnetic separation. It has high moisture content and high viscosity and is difficult to use directly. Its disposal and regeneration is an important step for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B38/02C04B18/14
CPCC04B18/142C04B18/144C04B28/10C04B2201/20C04B2201/50C04B7/02C04B22/04C04B38/02Y02W30/91
Inventor 张冰曾明周紫晨王智陈晶蔡雪军桂浩
Owner 中冶武汉冶金建筑研究院有限公司
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