CN101914651A - Converter or electric furnace steel-making slagging agent and preparation process thereof - Google Patents
Converter or electric furnace steel-making slagging agent and preparation process thereof Download PDFInfo
- Publication number
- CN101914651A CN101914651A CN2010102566222A CN201010256622A CN101914651A CN 101914651 A CN101914651 A CN 101914651A CN 2010102566222 A CN2010102566222 A CN 2010102566222A CN 201010256622 A CN201010256622 A CN 201010256622A CN 101914651 A CN101914651 A CN 101914651A
- Authority
- CN
- China
- Prior art keywords
- slag
- steel
- slagging agent
- making
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a steel-making slagging agent, in particular to a converter or electric furnace steel-making slagging agent produced by taking steel slag and magnesium slag as raw materials and blending an additive and a preparation process thereof. The slagging agent comprises the following chemical components in percentage by weight: at least 50 percent of CaO, at least 6 percent of MgO, at least 9 percent of TFe, at most 0.15 percent of S and at most 20 percent of SiO2. The preparation process for the slagging agent comprises the following steps of: material preparation according to the chemical component requirement, material mixing, wetting treatment, die-casting molding and aging reaction. The process solves the problem of the treatment of waste steel slag and metal magnesium slag; the components of the steel slag are basically similar to the components of the steel slag controlled in the steel-making process, so the steel-making slagging time and the slag adjusting time can be shortened; the FeO content of the slagging agent is basically consistent with the FeO content of the actual steel slag, so metal oxidation of molten steel is reduced; the slagging agent contains a certain amount of MgO which has certain assisting effect of protecting the furnace; and because fluorite is added, the corrosion of a furnace lining is reduced, and the service life of the furnace lining is greatly prolonged.
Description
Technical field
The present invention relates to steelmaking slag agent, particularly a kind of is converter, electric furnace steel-making slagging agent and the preparation technology thereof that raw material is allocated Additive Production into slag and magnesium slag.
Background technology
Existing slag making is of a great variety with supplementary material, and people use materials such as lime, light dolomite, iron scale, fluorite and calcined magnesite ball to make slag former usually aborning.In converting process, easily produce slag with lime, fluorite slag making and " return " phenomenon dried, prolonged the slag making time; Produce above-mentioned slag making material (except that the oxidation iron sheet) simultaneously and also can consume a large amount of energy, and the pollution a large amount of to the generation of environment.
Summary of the invention
The present invention is intended to solve above-mentioned defective and the deficiency that exists in the prior art, and a kind of alternative fluorite, iron scale, light dolomite are provided; Part replace lime and calcined magnesite ball improve furnace life, improve recovery rate of iron, and the converter that production technique is simple, with low cost, do not produce the solid-liquid gas three wastes, Electric furnace steel making are with slag former and production method thereof.
The technical scheme that the present invention solves described problem employing is:
A kind of converter, electric furnace steel-making slagging agent, it is a raw material with slag, magnesium slag, is additive with the lime powder, through ball milling, mixing, wetting, shaping, the time validity response form, spherical in shape or the elliposoidal of finished product form, granularity is 20mm-30mm, by weight percentage, contains in its chemical ingredients: at least 50% CaO, at least 6% MgO, at least 9% TFe, maximum 0.15% S, maximum 20% SiO
2
The preparation technology of above-mentioned converter, electric furnace steel-making slagging agent, carry out as follows:
A. prepare burden: by the CaO that contains at least 45% in the mixture, at least 6% MgO, at least 9% TFe, maximum 0.15% S, maximum 20% SiO
2The chemical ingredients requirement, select slag, magnesium slag and the raw material umber of lime powder additive in mixture: slag 75-90%, magnesium slag 7-15%, lime powder 3-10%;
B. batch mixing: the slag removal of impurities is after fragmentation, deironing, go into duplex stir mixing machine batch mixing after being milled to institute's specification that requires, other slag removal of impurities after fragmentation, be milled to go into the mixer batch mixing after the specification that requires, lime powder mixes with each slag charge directly into mixer;
C. the mixture that obtains of moist curing: step b enters rotary kiln and atomizes wettingly, and the 3-4% that the water yield that always atomizes is controlled at raw material weight carries out moist curing;
D. die cast: the wetting raw material that step c is obtained is cast into sphere through pressure die-casting machine, and granularity is 20-30mm;
E. validity response the time: with converter that steps d obtained, when the electric furnace steel-making slagging agent work in-process place between validity response, temperature of reaction is controlled at 50-80 ℃, and the timeliness reaction times is 48-96h.
By the slag former that the invention described above technical scheme is produced, the slag that has utilized steelmaking process to generate with addition of an amount of magnesium metal reduction slag and an amount of calcium lime powder, is made the novel slag former of steel-making through die cast.Steelmaking process can substitute fluorite, iron scale, light dolomite fully; Part replace lime and calcined magnesite ball.
Compared with prior art, advantage of the present invention: the processing that solves waste steel slag, metal magnesium slag; Slag itself is through the high temperature fritting, and composition and steelmaking process control slag composition are similar substantially in the slag simultaneously, substantially more than 2.5, shorten steelmaking slagging, residue adjustment time as basicity of slag greatly; FeO content and actual steel slag FeO content basically identical according to metallurgy metal in the dreg and molten steel metal balance principle, have reduced the molten steel burning in the slag former, have in other words improved recovery rate of iron; Contain a certain amount of MgO in the slag former to, its certain booster action of furnace retaining; Not in the erosion that has reduced with addition of fluorite furnace lining, after using new slag former, prolonged lining life greatly simultaneously.
Following table is converter of the present invention, electric furnace steel-making slagging agent commerical test cartogram, and effect is obvious.
Annotate: 1. increasing sulphur can ignore, in the analytical error scope.
2. the benefit increased value is only calculated direct economic benefit in the table, do not comprise improve furnace life, shorten the slag making time (savings tap to tap time), the raising recovery rate of iron brings indirect benefit.
Embodiment
Below in conjunction with embodiment in detail the present invention is described in detail.
The preparation technology of the described converter of present embodiment, electric furnace steel-making slagging agent, comprise preparation of raw material, machining processes, mixing, wetting processing treatment, die cast and the time validity response, the concrete steps division is as follows:
Preparation of raw material: table 1 has provided two kinds of different material prescriptions of converter, electric furnace steel-making slagging agent, and table 2 provided the chemical ingredients of described two kinds of converters, electric furnace steel-making slagging agent.
Machining processes is undertaken by following operation:
Slag with brick, foreign material remove back → enter jaw crusher → belt carry in by tramp iron separator deironing → send to rolling deironing again → goal grinding machine behind the masher → be machined to desired specification (100-150 order) → whole deironing → feed bin (meter is heavy) → twin-screw mixing procedure stirrer.
After the magnesium slag is removed foreign material → enter jaw crusher → belt and carry → send rolling masher → goal grinding machine → be machined to desired specification (100-150 order) → feed bin (meter is heavy) → twin-screw mixing procedure stirrer.
Calcium lime powder → belt conveying → feed bin (meter is heavy) → twin-screw mixing procedure stirrer.
Wetting processing treatment is undertaken by following operation:
Mixing raw material → belt (automatic gauge) → rotary kiln → atomizing wetting (automatic gauge).
The following operation of die cast is carried out:
Wetting raw material → die-casting system die cast.
Ageing treatment process:
Between die cast work in-process → belt conveying → ageing treatment → under 50-80 ℃ through 48-96h natural aging reaction → through after the assay was approved → metering packing.
1#, 2# converter, the electric furnace steel-making slagging agent made by above-mentioned steps see Table 3,4 in 50t converter (66 tons of taps) test-results, and test effect is remarkable.
Table 1
Table 2
Annotate: wetting atomized water add-on 3.5%.
Table 3
Annotate: 1. increasing sulphur can ignore, in the analytical error scope.
2. the benefit increased value is only calculated direct economic benefit in the table, do not comprise improve furnace life, shorten the slag making time (savings tap to tap time), the raising recovery rate of iron brings indirect benefit.
Table 4
Annotate: 1. increasing sulphur can ignore, in the analytical error scope.
2. the benefit increased value is only calculated direct economic benefit in the table, do not comprise improve furnace life, shorten the slag making time (savings tap to tap time), the raising recovery rate of iron brings indirect benefit.
Claims (2)
1. a converter, electric furnace steel-making slagging agent, it is a raw material with slag, magnesium slag, is additive with the lime powder, through ball milling, mixing, wetting, shaping, the time validity response form, spherical in shape or the elliposoidal of finished product form, granularity is 20mm-30mm, by weight percentage, contains in its chemical ingredients: at least 50% CaO, at least 6% MgO, at least 9% TFe, maximum 0.15% S, maximum 20% SiO
2
2. the preparation technology of a converter as claimed in claim 1, electric furnace steel-making slagging agent, carry out as follows:
A. prepare burden: by the CaO that contains at least 45% in the mixture, at least 6% MgO, at least 9% TFe, maximum 0.15% S, maximum 20% SiO
2The chemical ingredients requirement, select slag, magnesium slag and the raw material umber of lime powder additive in mixture: slag 75-90%, magnesium slag 7-15%, lime powder 3-10%;
B. batch mixing: the slag removal of impurities is after fragmentation, deironing, go into duplex stir mixing machine batch mixing after being milled to institute's specification that requires, other slag removal of impurities after fragmentation, be milled to go into the mixer batch mixing after the specification that requires, lime powder mixes with each slag charge directly into mixer;
C. the mixture that obtains of moist curing: step b enters rotary kiln and atomizes wettingly, and the 3-4% that the water yield that always atomizes is controlled at raw material weight carries out moist curing;
D. die cast: the wetting raw material that step c is obtained is cast into sphere through pressure die-casting machine, and granularity is 20-30mm;
E. validity response the time: with converter that steps d obtained, when the electric furnace steel-making slagging agent work in-process place between validity response, temperature of reaction is controlled at 50-80 ℃, and the timeliness reaction times is 48-96h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102566222A CN101914651B (en) | 2010-08-19 | 2010-08-19 | Converter or electric furnace steel-making slagging agent and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102566222A CN101914651B (en) | 2010-08-19 | 2010-08-19 | Converter or electric furnace steel-making slagging agent and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101914651A true CN101914651A (en) | 2010-12-15 |
| CN101914651B CN101914651B (en) | 2012-03-28 |
Family
ID=43322287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102566222A Expired - Fee Related CN101914651B (en) | 2010-08-19 | 2010-08-19 | Converter or electric furnace steel-making slagging agent and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101914651B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063280A (en) * | 2015-08-24 | 2015-11-18 | 宁夏太阳镁业有限公司 | Slagging medium and preparation method thereof |
| CN108220521A (en) * | 2016-12-13 | 2018-06-29 | 鞍钢股份有限公司 | A kind of desiliconization of hot metal agent and its application method using iron red mud as matrix |
| CN110343803A (en) * | 2019-07-31 | 2019-10-18 | 西安建筑科技大学 | A kind of magnesium reduction slag is applied to the smelting process of pneumatic steelmaking |
| CN114606404A (en) * | 2022-03-09 | 2022-06-10 | 石横特钢集团有限公司 | Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406579C (en) * | 2003-12-08 | 2008-07-30 | 昆明钢铁股份有限公司 | Converter refined slaging medium and slagging technique |
| CN101368222A (en) * | 2008-09-27 | 2009-02-18 | 江苏正达炉料有限公司 | Fluorin-free composite quick slag-forming constituents for convertor steelmaking and method of producing the same |
-
2010
- 2010-08-19 CN CN2010102566222A patent/CN101914651B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406579C (en) * | 2003-12-08 | 2008-07-30 | 昆明钢铁股份有限公司 | Converter refined slaging medium and slagging technique |
| CN101368222A (en) * | 2008-09-27 | 2009-02-18 | 江苏正达炉料有限公司 | Fluorin-free composite quick slag-forming constituents for convertor steelmaking and method of producing the same |
Non-Patent Citations (2)
| Title |
|---|
| 《炼钢》 20050430 孟劲松等 复吹转炉应用无氟造渣剂---铁矾土的生产实践 1-3、11 1 第21卷, 第2期 2 * |
| 《炼钢》 20091031 何环宇等 利用钢渣制备造渣剂的成型实验研究 55-58 1 第25 卷, 第5期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063280A (en) * | 2015-08-24 | 2015-11-18 | 宁夏太阳镁业有限公司 | Slagging medium and preparation method thereof |
| CN108220521A (en) * | 2016-12-13 | 2018-06-29 | 鞍钢股份有限公司 | A kind of desiliconization of hot metal agent and its application method using iron red mud as matrix |
| CN110343803A (en) * | 2019-07-31 | 2019-10-18 | 西安建筑科技大学 | A kind of magnesium reduction slag is applied to the smelting process of pneumatic steelmaking |
| CN110343803B (en) * | 2019-07-31 | 2020-12-11 | 西安建筑科技大学 | Smelting method for applying magnesium reducing slag to converter steelmaking |
| CN114606404A (en) * | 2022-03-09 | 2022-06-10 | 石横特钢集团有限公司 | Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101914651B (en) | 2012-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101906500B (en) | It is a kind of to comprehensively utilize the method that non-calcium chromium slags are directly produced chromium-base alloy steel | |
| CN106591575B (en) | Low energy consumption coal-pressing ball and preparation method thereof | |
| CN102101757A (en) | Industrial waste slag-doped composite silicate cement and production method thereof | |
| CN103451374B (en) | Production process of aluminium slag adjusting agent for LF refining furnace | |
| CN101560586B (en) | Compound dephosphorization agent with converter slag as raw material and preparing method thereof | |
| CN101724752B (en) | Method for smelting medium ferrovanadium | |
| CN106544464A (en) | Environment-friendly type splashing slag in converter material and preparation method thereof | |
| CN100357208C (en) | Steel slag modification and steel slag cement | |
| CN103451373B (en) | Magnesium ball used for converter steelmaking and production technology thereof | |
| CN102634718B (en) | Preparation process for organically-combined fluorite ball | |
| CN103484595B (en) | Production process of magnesian slag pressing agents | |
| CN101914651B (en) | Converter or electric furnace steel-making slagging agent and preparation process thereof | |
| CN105110660A (en) | Method for reducing, quenching and tempering molten steel slags in reducing atmosphere | |
| CN102978384A (en) | Method for using steel slags during sintering | |
| CN105779695A (en) | Environment-friendly smokeless molten steel refining slag modifier | |
| CN101280351A (en) | Production method of vanadium slag | |
| CN106350632B (en) | Pneumatic steelmaking light-burned pressure ball and preparation method thereof | |
| CN102839252A (en) | Converter slag fluoride-free fusing agents and method for producing the same | |
| CN101831525B (en) | Dephosphorization method for molten iron | |
| CN109136463B (en) | Batching method and smelting process for smelting electric furnace full scrap steel and graphite press ball | |
| CN104016599A (en) | Adjusting material for carrying out high temperature activation treatment on electric furnace white slag, and application thereof | |
| CN101367625A (en) | Method for altering steel slag into grain slag | |
| CN108220529A (en) | It is a kind of using sintering machine head end electro-precipitating dust as the desiliconization of hot metal agent of matrix | |
| CN102161491A (en) | Preparation method of pre-melted calcium aluminum for steel making | |
| CN103509910B (en) | A kind of liquid steel refining fluxing agent and manufacture method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHAO HUISHENG Free format text: FORMER OWNER: ZUNHUA LITUO ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Effective date: 20110816 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Huisheng Inventor after: Wang Suxia Inventor after: Zhao Jisuo Inventor before: Zhao Huisheng Inventor before: Peng Yinzhang Inventor before: Wang Suxia Inventor before: Zhao Jisuo Inventor before: Li Rongtian Inventor before: Dai Baodong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHAO HUISHENG PENG YINZHANG WANG SUXIA ZHAO JISUO LI RONGTIAN DAI BAODONG TO: ZHAO HUISHENG WANG SUXIA ZHAO JISUO Free format text: CORRECT: ADDRESS; FROM: 064200 TANGSHAN, HEBEI PROVINCE TO: 030009 TAIYUAN, SHAANXI PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110816 Address after: 030009 Shanxi Province, Taiyuan city Xinghualing District victory Bridge Road No. 4 23-12 Applicant after: Zhao Huisheng Address before: 064200 south 2nd Ring Road, Hebei, Zunhua Applicant before: Zunhua Lituo Environmental Protection Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: ZUNHUA LITUO ENVIRONMENTAL PROTECTION TECHNOLOGY C Free format text: FORMER OWNER: ZHAO HUISHENG Effective date: 20111201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Peng Yinzhang Inventor after: Zhao Huisheng Inventor after: Chen Haisuo Inventor after: Gao Jimin Inventor after: Wang Haifeng Inventor before: Zhao Huisheng Inventor before: Wang Suxia Inventor before: Zhao Jisuo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHAO HUISHENG WANG SUXIA ZHAO JISUO TO: PENG YINZHANG ZHAO HUISHENG CHEN HAISUO GAO JIMIN WANG HAIFENG Free format text: CORRECT: ADDRESS; FROM: 030009 TAIYUAN, SHAANXI PROVINCE TO: 064200 TANGSHAN, HEBEI PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20111201 Address after: 064200 south 2nd Ring Road, Hebei, Zunhua Applicant after: Zunhua Lituo Environmental Protection Co., Ltd. Address before: 030009 Shanxi Province, Taiyuan city Xinghualing District victory Bridge Road No. 4 23-12 Applicant before: Zhao Huisheng |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20140819 |
|
| EXPY | Termination of patent right or utility model |