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Desulfuration and deoxidization agent prepared by means of metal smelting waste and preparation method of desulfuration and deoxidization agent

A technology of metal smelting and deoxidizer, applied in the direction of improving process efficiency, can solve problems such as failure to use resources and regional restrictions, and achieve the effect of preventing waste of land resources, reducing production costs, and reducing treatment costs

Inactive Publication Date: 2015-12-23
杭州碧清环保科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these applications are low-end applications, have not achieved resource utilization, and are subject to regional restrictions

Method used

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  • Desulfuration and deoxidization agent prepared by means of metal smelting waste and preparation method of desulfuration and deoxidization agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The waste magnesium refining slag produced in the magnesium smelting process is pulverized and mixed with water or hydrochloric acid solution to separate metal magnesium and magnesium chloride. The separated metal powder is made into powder. Mix 0.3kg of magnesium powder, 0.3kg of aluminum scum powder and 10kg of magnesium reduction slag C2S powder to make a desulfurization and deoxidation agent.

[0033] Add the mixture to 1000kg of iron ore and measure its desulfurization degree. The test results show that the sulfur content in the steelmaking raw materials is 0.275ppm, and the desulfurization rate is 85%.

Embodiment 2

[0035] The waste magnesium refining slag produced in the magnesium smelting process is pulverized and mixed with water or hydrochloric acid solution to separate metal magnesium and magnesium chloride. The separated metal powder is made into powder. Mix 1kg of magnesium powder, 5kg of aluminum scum powder and 10kg of magnesium reduction slag C2S powder to make a desulfurization and deoxidation agent.

[0036] Add the mixture to 1000kg of iron ore and measure its desulfurization degree. The test results show that the sulfur content in the steelmaking raw materials is 0.272ppm, and the desulfurization rate is 89%.

Embodiment 3

[0038] The waste magnesium refining slag produced in the magnesium smelting process is pulverized and mixed with water or hydrochloric acid solution to separate metal magnesium and magnesium chloride. The separated metal powder is made into powder. Mix 2kg of magnesium powder, 3kg of aluminum scum powder and 10kg of magnesium reduction slag C2S powder to make a desulfurization and deoxidation agent.

[0039] Add the mixture to 1000kg of iron ore and measure its desulfurization degree. The test results show that the sulfur content in the steelmaking raw materials is 0.267ppm, and the desulfurization rate is 95%.

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Abstract

The invention relates to desulfuration agents and deoxidization agents manufactured by means of waste generated in magnesium and aluminum smelting processes and methods of the desulfuration agents and the deoxidization agents, belongs to the field of metal smelting waste recycling and reutilizing and desulfuration and deoxidization agent preparation, and discloses a desulfuration and deoxidization agent prepared by means of metal smelting waste and a preparation method of the desulfuration and deoxidization agent. The preparation method comprises the steps that magnesium metal is extracted out of waste magnesium metal and magnesium chloride (MgCl<2>) containing refining slag generated in the magnesium smelting process and powdered; after separation and purification are carried out on waste generated in the aluminum smelting process, aluminum dross is recycled and powdered; waste reducing slag C2S generated in the magnesium smelting process is recycled and powdered; and magnesium metal powder, aluminum dross powder and reducing slag C2S powder are mixed into the desulfuration and deoxidization agent. Waste generated in the magnesium smelting process and the aluminum smelting process is recycled and reutilized as the desulfuration and deoxidization agent for metal smelting and steel smelting, and therefore the cost for disposing metal smelting waste can be reduced, land resource waste, environment pollution, soil salinization and other environment problems caused by the metal smelting waste are avoided, the production unit price of the desulfuration and deoxidization agent for metal smelting and steel smelting is reduced, and the effect of reducing production cost is achieved.

Description

technical field [0001] The patent of the present invention belongs to the field of metal smelting waste recycling and the field of desulfurization and deoxidation agent preparation, and refers to the desulfurization agent and deoxidation agent produced by using the waste slag produced in the magnesium and aluminum smelting process and the method thereof. Background technique [0002] The resource reuse of metal smelting waste has always been a research hotspot, but there are more or less technical or cost disadvantages in the recycling methods of these wastes. Most metal smelting waste is landfilled as industrial waste, which can easily cause environmental problems such as waste of land resources, environmental pollution, and soil salinization. It is particularly important to find a suitable treatment method. [0003] When making iron or steel, it is necessary to convert excess carbon and other impurities contained in iron ore or pig iron into gas or slag under high temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
CPCY02P10/20
Inventor 朴大兴夏抒李丙先
Owner 杭州碧清环保科技有限公司
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