Converter tapping injection refining desulfurization method and device

A desulfurization device and converter technology, applied in the field of secondary refining of steel, can solve the problems of large consumption of slag-forming materials and heat, low interphase mass transfer rate, small contact specific surface area, etc. low investment
CN109777920AInactive Publication Date: 2019-05-21NORTHEASTERN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEASTERN UNIV
Publication Date
2019-05-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a converter tapping injection refining desulfurization method and device. In the converter tapping process, with Ar (or N2) as powder spraying carrier gas, a spraying gun injects powdery desulfurization agents to molten steel streams in the tapping process, so that the powdery desulfurization agents are fed in a ladle with the molten steel streams; and the full mixing is realized under the effect of bottom blowing argon stirring of the ladle, so that the contact specific surface area of the powdery desulfurization agents and molten steel is increased, the inter-phase mass transfer speed and the molten steel desulfurization reaction speed are accelerated, the effective utilization efficiency of the powdery desulfurization agents is improved, the desulfurization refining production takt is accelerated, and the continuous stable efficient refining is realized. The defects in a traditional desulfurization process can be overcome; and the quick and efficient smeltingcan be realized. The powdery desulfurization agents can be replaced by carbon powder, desulfurization powder agents, desulfurization powder agents or alloy powder agents; and the multifunctional refining can be realized. The device and the method are not only suitable for molten steel desulfurization refining processes, but also suitable for other refining processes.
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Description

technical field

[0001] The invention mainly belongs to the field of secondary refining of iron and steel, and in particular relates to a desulfurization method and device for converter tapping powder spraying refining. Background technique

[0002] Improving the cleanliness of molten steel is an important direction for the development of contemporary steel materials. With the development of clean steel production technology and equipment technology, there is no greater technical difficulty in meeting the production requirements of high-quality steel, but how to reduce the production cost of clean steel and achieve stable and efficient production is still a technical challenge for clean steel production . In recent years, optimizing the steel production process, upgrading steel products, and improving corporate competitiveness have become the core tasks of the development of steel companies. Exploring the common technology of building a low-cost, high-efficiency, and fast-pa...

Claims

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