Method for preparing inorganic fiber and ferro-nickel alloy and inorganic fiber

A technology of inorganic fiber and nickel-iron alloy, which is applied in the field of metallurgy, can solve the problems of low utilization rate of fly ash, achieve significant environmental and economic benefits, facilitate separation, and reduce the cost of reducing agents

Inactive Publication Date: 2021-11-30
山西华清能创环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the utilization rate of fly ash in my country has been hovering around 70%, and the problem of low utilization rate of fly ash faced by remote areas and major coal production areas is very serious

Method used

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  • Method for preparing inorganic fiber and ferro-nickel alloy and inorganic fiber

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preparation example Construction

[0038] According to the method for preparing inorganic fibers and nickel-iron alloys according to the embodiments of the present invention, the mixed material obtained by mixing fly ash, laterite nickel ore and biomass is smelted in an anoxic environment, and the biomass is smelted in an anoxic environment. Under high temperature pyrolysis and gasification, a large amount of reducing gases can be produced, such as carbon monoxide and hydrogen, which can reduce iron oxides and nickel oxides in laterite nickel ore to form nickel-iron alloys, while fly ash Rich in SiO 2 and Al 2 o 3 , SiO 2 and Al 2 o 3 In the high temperature state, it is conducive to slag formation, which is beneficial to the separation of nickel-iron alloy. Then the slag is melted and centrifuged, and at high temperature, the SiO in the slag 2 and Al 2 o 3 After centrifugation into fibers, inorganic fibers can be prepared, thereby realizing the high value-added utilization of fly ash, and reducing the ...

Embodiment 1

[0042] First, use a crusher to crush the laterite nickel ore and biomass separately, so that the particle size of the crushed laterite nickel ore is not higher than 25mm, and the particle size of the biomass is not higher than 50mm; then fly ash and the crushed laterite Nickel ore and biomass are mixed according to the mass ratio of 2.2:1:2, and the mixed material is obtained; then, in an anoxic environment, the mixed material is smelted at a temperature of 1450 degrees Celsius for 250 minutes, and separated by standing The nickel-iron alloy and the slag are separated; the slag is melted at a temperature of 1650 degrees Celsius, and the viscosity of the slag formed by melting the slag is 71 poise, and then centrifuged with a centrifugal fiber machine, and the line speed of the centrifugal fiber machine is 200 meters / sec, and the pressure is 0.7MPa, thus obtaining inorganic fibers.

[0043] Conclusion: In the obtained nickel-iron alloy, the content of each component is as foll...

Embodiment 2

[0045] First, use a crusher to crush the laterite nickel ore and biomass separately, so that the particle size of the crushed laterite nickel ore is not higher than 25mm, and the particle size of the biomass is not higher than 50mm; then fly ash and the crushed laterite Nickel ore and biomass are mixed according to the mass ratio of 2:0.8:2.5, and the mixed material is obtained; then, in an anoxic environment, the mixed material is smelted at a temperature of 1500 degrees Celsius for 300 minutes, and separated by standing The nickel-iron alloy and the slag are separated; the slag is melted at a temperature of 1550 degrees Celsius, and the viscosity of the slag formed by melting the slag is 85 poise, and then centrifuged by a centrifugal fiber machine, and the line speed of the centrifugal fiber machine is 180 meters / sec, and the pressure is 0.9MPa, thus obtaining inorganic fibers.

[0046] Conclusion: In the obtained nickel-iron alloy, the content of each component is as foll...

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Abstract

The invention discloses a method for preparing an inorganic fiber and a ferro-nickel alloy and the inorganic fiber. The method comprises the steps that 1, fly ash, laterite-nickel ore and biomass are mixed so as to obtain a mixed material; (2) the mixed material is smelted in an anoxic environment to obtain the ferro-nickel alloy and slag; and (3) the slag is melted and centrifuged to obtain the inorganic fiber. With adoption of the method, high value-added utilization of the fly ash and biomass solid waste is realized, and the method has remarkable environmental benefits and economic benefits.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular, the invention relates to a method for preparing inorganic fibers and nickel-iron alloys and the inorganic fibers. Background technique [0002] Fly ash is the main solid waste discharged from coal-fired power plants. With the development of the power industry, the discharge of fly ash from coal-fired power plants has increased year by year, becoming one of the largest industrial wastes in my country. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to human beings and organisms. Realizing the resource utilization of fly ash is the best way to solve the problem of fly ash. At present, the utilization rate of fly ash in my country has been hovering around 70%, and the problem of low utilization rate of fly ash faced by rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/02C03C13/06
CPCC22B23/023C03C13/06
Inventor 毕大鹏杨文玲胡振中张晋玲
Owner 山西华清能创环境科技有限公司
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