CN103484602A - Slagging agent for iron and steel metallurgy - Google Patents
Slagging agent for iron and steel metallurgy Download PDFInfo
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- CN103484602A CN103484602A CN201310416805.XA CN201310416805A CN103484602A CN 103484602 A CN103484602 A CN 103484602A CN 201310416805 A CN201310416805 A CN 201310416805A CN 103484602 A CN103484602 A CN 103484602A
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- slagging
- steel
- slagging agent
- fluorite
- iron
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides a slagging agent for iron and steel metallurgy, and relates to the technical field of iron and steel smelting. The slagging agent comprises the following components, by weight, 48% of F6, 12% of A12, 4-29% of Na4, S < 0.05%, P < 0.05%, H2O <= 1% and Fe 2O3 <= 1%. Products are mechanically pressed and formed and are granulated, granularity ranges from 5mm to 40mm, the pulverulent ratio is low, and the products are convenient to transport and store; the melting point of lime can be effectively reduced, and therefore the effects of slagging and fluxing are achieved; the fluorine content of the slagging agent is lower than the fluorine content of fluorite, therefore, environmental pollution is small, and the operating environment of workers is improved; the slagging agent is better in slagging effect compared with fluorite, molten steel temperature drop is small in the slagging process, and the slagging agent has the obvious effects for improving the quality of molten steel, shortening refining time, and reducing steel-making cost.
Description
Technical field
The present invention relates to the smelting iron and steel technical field, be specifically related to a kind of ferrous metallurgy dissolving agent.
Background technology
During the mid-early stage slag making of LF stove refining process, need add the fluorite of some amount as changing the slag fusing assistant, this is domestic and international steel mill routine operation technique.But the refractorily lined of fluorite Eroded refining furnace, cause the reduction of refining furnace life-span and environmental pollution, increase iron and steel stock consumption, and be subject in recent years the impact of fluorite resource shortage, and the fluorite price has certain growth, has increased the production cost of steel-making enterprise.
Summary of the invention
The purpose of this invention is to provide the ferrous metallurgy dissolving agent, its fusing point is low, and burn-off rate is fast, replaces fluorite to do slag material, makes the refining rapid slagging, reduces molten steel temperature drop, shortens for the electrochemical slag time, energy-saving and cost-reducing, cost efficiency; And preparation is simple, easy to use.
In order to solve the existing problem of background technology, composition of the present invention and mass percent are respectively: F6～48%, Al2～12%, Na4～29%, S<0.05%, P<0.05%, H2O≤1%, Fe2O3≤1%.
Phase of the present invention contains one or more fluoride salts except Calcium Fluoride (Fluorspan), F element mass percent 6～48% in forming; And product is particulate state by mechanical pressing, granularity 5～40mm, Pulverization ratio is low, is convenient to transportation and preserves.
The present invention has following beneficial effect: can effectively reduce the fusing point of lime, the effect that playing slag is fluxed; And the fluorine element content in dissolving agent is lower than the fluorine content of fluorite, and environmental pollution is little, improves workman's operating environment; There is the change slag effect better than fluorite, change slag process molten steel temperature drop little, for improving steel quality, shorten refining time, reduce the steel-making cost successful.
Embodiment
This embodiment is by the following technical solutions: its composition and mass percent are respectively: F6～48%, Al2～12%, Na4～29%, S<0.05%, P<0.05%, H2O≤1%, Fe2O3≤1%.
This embodiment contains one or more fluoride salts except Calcium Fluoride (Fluorspan), F element mass percent 6～48%; And product is particulate state by mechanical pressing, granularity 5～40mm, Pulverization ratio is low, is convenient to transportation and preserves.
Embodiment 1: prepare the dissolving agent of 1 ton.
The preparation method: various fluoride salt add-on 500Kg, all the other are various aluminates, aluminum oxide etc., being pressed into granularity after raw material is mixed is the spherical of 5～40mm.
It is 200 purpose powder that the fluorite ball that this dissolving agent and LF refining are used is finely ground into granularity, and two kinds of powder are mixed according to the ratio of 1:4,1:8,1:10 with lime respectively, measures the temperature of fusion (hemisphere point method) of various mixtures.Result shows, this dissolving agent is lower than the temperature of fusion of the mixture of fluorite and lime (in lime situation in proportion) with the mixed temperature of fusion of lime, approximately low 20～50 ℃.
The commerical test of embodiment 2:120 ton dissolving agent.
During the refining of LF stove, lime adds embodiment 1 dissolving agent, and according to 4:0.8, (lime: ratio fluorite=4:1) adds together, uses the heat of dissolving agent not use fluorite, falls the electropolarization slag 3 minutes.By type approval test, observe this dissolving agent in the situation that add-on is only fluorite 80%, still have and change preferably the slag effect, in refining process, slagging is fast, and molten steel is without temperature drop.
Claims (3)
1. ferrous metallurgy dissolving agent is characterized in that: form and mass percent is respectively; F6～48%, Al2～12%, Na4～29%, S<0.05%, P<0.05%, H2O≤1%, Fe2O3≤1%.
2. ferrous metallurgy dissolving agent according to claim 1, is characterized in that: in its phase composition, contain one or more fluoride salts except Calcium Fluoride (Fluorspan), F element mass percent 6～48%.
3. ferrous metallurgy dissolving agent according to claim 1, it is characterized in that: the present invention is particulate state by mechanical pressing, granularity 5～40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310416805.XA CN103484602A (en) | 2013-09-10 | 2013-09-10 | Slagging agent for iron and steel metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310416805.XA CN103484602A (en) | 2013-09-10 | 2013-09-10 | Slagging agent for iron and steel metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103484602A true CN103484602A (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310416805.XA Pending CN103484602A (en) | 2013-09-10 | 2013-09-10 | Slagging agent for iron and steel metallurgy |
Country Status (1)
| Country | Link |
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| CN (1) | CN103484602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334627A (en) * | 2020-03-20 | 2020-06-26 | 莱芜钢铁冶金生态工程技术有限公司 | Metallurgy fluorine-containing slagging agent and preparation method and application thereof |
| CN115305313A (en) * | 2022-09-16 | 2022-11-08 | 宝武集团鄂城钢铁有限公司 | Converter slag melting agent and preparation method and application thereof |
-
2013
- 2013-09-10 CN CN201310416805.XA patent/CN103484602A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334627A (en) * | 2020-03-20 | 2020-06-26 | 莱芜钢铁冶金生态工程技术有限公司 | Metallurgy fluorine-containing slagging agent and preparation method and application thereof |
| CN111334627B (en) * | 2020-03-20 | 2021-11-23 | 莱芜钢铁冶金生态工程技术有限公司 | Metallurgy fluorine-containing slagging agent and preparation method and application thereof |
| CN115305313A (en) * | 2022-09-16 | 2022-11-08 | 宝武集团鄂城钢铁有限公司 | Converter slag melting agent and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |
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| WD01 | Invention patent application deemed withdrawn after publication |