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Method for producing mineral cotton from silicomanganese and ferro-nickel alloy smelting slag

A technology of nickel-iron alloy and silicon-manganese alloy, which is applied in the direction of glass manufacturing equipment and manufacturing tools, can solve the problems of incapable production quality, high melting temperature, high-quality slag wool, etc., and achieve the effect of broadening the scope of comprehensive utilization and improving accuracy

Active Publication Date: 2019-11-15
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, silicomanganese slag is a suitable raw material for the production of slag wool, but in actual production, silicomanganese slag shows strong glassiness, and cannot produce high-quality slag wool
Ferronickel slag is not suitable as a raw material for slag wool production because of its high melting temperature and strong crystallization properties of the melt

Method used

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  • Method for producing mineral cotton from silicomanganese and ferro-nickel alloy smelting slag
  • Method for producing mineral cotton from silicomanganese and ferro-nickel alloy smelting slag
  • Method for producing mineral cotton from silicomanganese and ferro-nickel alloy smelting slag

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Effect test

Embodiment 1

[0045] This implementation is aimed at the situation that when the mass ratio of silicon-manganese slag / nickel-iron slag=7:3, the mixture of the two kinds of slag is used as raw material to produce slag wool by centrifugal process. The process flow is as attached Figure 5 . Judgment of the performance of the raw materials into the furnace: firstly, the viscosity and melting temperature of the slag mixture with a mass ratio of silicomanganese slag / nickel-iron slag = 7:3 are tested, and the experimental results are shown in the attached image 3 And attached Figure 4 The results show that the slag mixture with a mass ratio of silicomanganese slag / nickel-iron slag=7:3 has a temperature range of 58°C in the range of 1 to 3Pa·s and a complete melting temperature of 1401°C. cotton demand. Production of slag wool: Add the slag material mixture with a mass ratio of silicomanganese slag / nickel-iron slag=7:3 into the electric furnace; heat the mixed slag material to 1500°C in the ele...

Embodiment 2

[0048] This implementation is aimed at the situation that when the mass ratio of silicon-manganese slag / nickel-iron slag=8:2, the mixture of the two kinds of slag is used as raw material to produce slag wool by centrifugal process. The process flow is as attached Figure 5 . Judgment of the performance of the raw materials into the furnace: first, the viscosity and melting temperature of the slag mixture with a mass ratio of silicomanganese slag / nickel-iron slag=8:2 are tested; the results show that the slag with a mass ratio of silicomanganese slag / nickel-iron The material mixture has a temperature range of 67°C within 1 to 3 Pa·s, and a complete melting temperature of 1389°C. The properties of the mixed slag fully meet the needs of the production of slag wool. Production of slag wool: Add the slag material mixture with a mass ratio of silicomanganese slag / nickel-iron slag=8:2 into the electric furnace; heat the mixed slag material to 1500°C in the electric furnace; Slag ope...

Embodiment 3

[0051] This implementation is aimed at the situation that when the mass ratio of silicon-manganese slag / nickel-iron slag=6:4, the mixture of the two kinds of slag is used as raw material to produce slag wool by centrifugal process. The process flow is as follows Figure 5 . Judgment of the performance of the raw materials into the furnace: firstly, the viscosity and melting temperature of the slag mixture with a mass ratio of silicomanganese slag / nickel-iron slag=7:3 are tested; the results show that the slag with a mass ratio of silicomanganese The material mixture has a temperature range of 45°C within 1 to 3 Pa·s, and a complete melting temperature of 1436°C. The properties of the mixed slag fully meet the needs of the production of slag wool. Production of slag wool: Add the slag material mixture with a mass ratio of silicomanganese slag / nickel-iron slag=6:4 into the electric furnace; heat the mixed slag material to 1500°C in the electric furnace; Slag operation, centrifu...

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Abstract

The invention relates to a method for producing mineral cotton from silicomanganese and ferro-nickel alloy smelting slag and belongs to the field of metallurgy slag resource utilization. According tothe method, smelting slag of a silicomanganese alloy and a ferro-nickel alloy is adopted as a raw material, the mixing ratio of silicomanganese slag to ferro-nickel slag is the main control process, the mixed smelting slag is molten in an electric furnace, and the mineral cotton is prepared from the slag by using a centrifugal cotton formation process. The control process is specifically determined by viscosities and meting performance of the silicomanganese slag and the ferro-nickel slag, the mixed slag melt is within a viscosity range of 1-3Pa*s, and the temperature span is within 40-80 DEGC; and the melting temperature of the mixed slag is not greater than 1450 DEG C. As two types of smelting slag are mixed according to a certain ratio, the melting performance and the viscosity performance of modified slag can be compressively modified, the two types of smelting slag can be an appropriate production raw material of the mineral cotton, metallurgy slag resources are comprehensively utilized, and economic and environment benefits can be made.

Description

technical field [0001] The invention relates to a method for producing slag wool by using silicon-manganese and nickel-iron alloy smelting waste slag, belonging to the field of metallurgical waste slag resource utilization. Background technique [0002] Because of the huge steel production in the world, silicon-manganese alloys and nickel-iron alloys are used as steel deoxidation and alloy components, and the annual output is also huge. At the same time, it brings a large amount of silicon-manganese and nickel-iron smelting waste residues. At present, the treatment methods of silicon-manganese and ferronickel smelting slag are mainly stockpiling and resource utilization. Stockpiling causes land waste and potential environmental hazards, and resource utilization is mainly in cement and paving cornerstones. Slag wool, as a kind of thermal insulation, heat insulation and sound insulation material, is widely used in various fields of national economy. The latest research shows...

Claims

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Application Information

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IPC IPC(8): C03B37/04C03C13/06
CPCC03B37/04C03C13/06
Inventor 王万林张同生薛利文戴诗凡李祖敏张朝晖谢应井郑光军覃华军黄珠范森荣应国民
Owner CENT SOUTH UNIV