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A method for preparing nickel-iron alloy and aluminate cement admixture using converter slag

A technology of aluminate cement and nickel-iron alloy, which is applied in the field of comprehensive treatment of steel slag, can solve the problems of high iron content, low nickel content, accumulation pollution of converter slag, etc., and achieves the effect of expanding resources and reducing production costs

Active Publication Date: 2020-06-23
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the current prior art, the technical problem to be solved by the present invention is to produce nickel-containing molten iron and aluminate cement by using the waste heat of molten converter slag from iron and steel enterprises, using poor nickel-iron ore as raw material, and blast furnace dust as reducing agent It solves the pollution problem of converter slag accumulation in iron and steel enterprises, solves the problem of utilization of laterite ore with low nickel content and high iron content, expands nickel resources, reduces production costs, and contributes to energy saving and emission reduction for iron and steel enterprises. Development provides support

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The laterite nickel ore, blast furnace dust and asphalt are mixed and hot-pressed to form nickel-iron carbon pellets; the content of laterite nickel ore and blast furnace dust is determined according to M C >K×(α×(M 1 +M 2 +M 3 )+β×(M 4 +M 5 +M 6 )+λ× (M 7 +M 8 +M 9 )+ε×(M 10 +M 11+M 12 )+ζ×(M 13 +M 14 +M 15 )) Determine the mixing ingredients, add 2% asphalt by mass fraction, and hot press to form nickel-iron-carbon pellets. The electric furnace generates high-temperature flue gas to preheat the nickel-iron-carbon pellets to a temperature range of 200°C. Put the preheated nickel-iron-carbon pellets into the bottom of the electric arc furnace. After the converter smelting, put the molten converter slag into the ladle with heat preservation device, transport it from the ladle to the side of the electric furnace, and then heat it into the electric furnace. The electric furnace graphite electrode heating form provides heat for the converter slag upgrading an...

Embodiment 2

[0050] The laterite nickel ore, blast furnace dust and asphalt are mixed and hot-pressed to form nickel-iron carbon pellets; the content of laterite nickel ore and blast furnace dust is determined according to M C >K×(α×(M 1 +M 2 +M 3 )+β×(M 4 +M 5 +M 6 +λ×(M 7 +M 8 +M 9 ) +ε×(M 10 +M 11 +M 12 )+ζ×(M 13 +M 14 +M 15 )) Determine the mixing ingredients, add 5% asphalt by mass fraction, and hot press to form nickel-iron-carbon pellets. The electric furnace generates high-temperature flue gas to preheat the nickel-iron-carbon pellets to a temperature range of 500°C. Put the preheated nickel-iron-carbon pellets into the bottom of the electric arc furnace. After the converter smelting, put the molten converter slag into the ladle with heat preservation device, transport it from the ladle to the side of the electric furnace, and then heat it into the electric furnace. The electric furnace graphite electrode heating form provides heat for the converter slag upgrading an...

Embodiment 3

[0052] The laterite nickel ore, blast furnace dust and asphalt are mixed and hot-pressed to form nickel-iron carbon pellets; the content of laterite nickel ore and blast furnace dust is determined according to M C >K×(α×(M 1 +M 2 +M 3 )+β×(M 4 +M 5 +M 6 )+λ× (M 7 +M 8 +M 9 )+ε×(M 10 +M 11 +M 12 )+ζ×(M 13 +M 14 +M 15 )) Determine the mixing ingredients, add 3% asphalt by mass fraction, and hot press to form nickel-iron-carbon pellets. The electric furnace generates high-temperature flue gas to preheat the nickel-iron-carbon pellets to a temperature range of 300°C. Put the preheated nickel-iron-carbon pellets into the bottom of the electric arc furnace. After the converter smelting, put the molten converter slag into the ladle with heat preservation device, transport it from the ladle to the side of the electric furnace, and then heat it into the electric furnace. The electric furnace graphite electrode heating form provides heat for the converter slag upgrading a...

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Abstract

The invention discloses a method for preparing ferro-nickel and aluminate cement admixture through converter slag. The problem about accumulation pollution of the converter slag of iron and steel enterprises is solved, meanwhile, the problem about utilization of red clay which is low in nickel content and very high in iron content is solved, the nickel resources are increased, the production costis reduced, and supports are provided for energy conservation, emission reduction and green development of the iron and steel enterprises.

Description

technical field [0001] The invention belongs to the technical field of steel slag comprehensive treatment, and in particular relates to a method for preparing nickel-iron alloy and aluminate cement admixture by using converter slag. Background technique [0002] Converter slag is an industrial solid waste produced during the converter steelmaking process. For every ton of steel produced, 0.1 to 0.13 tons of steel slag is produced at a temperature of about 1350°C to 1450°C. It also contains 10-30% total iron TFe and a large amount of beneficial elements such as calcium, magnesium and silicon. At present, most iron and steel enterprises generally adopt simple magnetic separation, and except for a small part of the remaining tailings that are sold to cement factories, most of them are dumped, causing environmental pollution, land occupation and waste of resources. The hot stuffing method is a steel slag pretreatment process that has only existed in the past ten years; because...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B11/10C21B3/06C22B1/245C04B7/32C04B5/06
CPCC04B5/06C04B7/32C21B3/06C21B11/10C22B1/2406C22B1/245Y02W30/50
Inventor 唐复平李金莲廖相巍王亮任伟韩子文童晓宇张伟刘祥于赋志
Owner ANGANG STEEL CO LTD