CN1071708A - Directly alloying process in vanadium slag furnace - Google Patents
Directly alloying process in vanadium slag furnace Download PDFInfo
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- CN1071708A CN1071708A CN91109726A CN91109726A CN1071708A CN 1071708 A CN1071708 A CN 1071708A CN 91109726 A CN91109726 A CN 91109726A CN 91109726 A CN91109726 A CN 91109726A CN 1071708 A CN1071708 A CN 1071708A
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- steel
- slag
- vanadium
- vanadium slag
- alloying process
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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)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Directly alloying process in vanadium slag furnace of the present invention belongs to oxide compound directly into electric furnace alloying process field.The characteristics of this technology are that former block vanadium slag and reduction period slag making materials, reductor are successively added the molten bath, rationally control basicity in 2.5～3.2 rate of recovery of stabilizing and increasing vanadium.The rate of recovery of this technology vanadium is stabilized in 90～95%, compares with the outer DIRECT ALLOYING technology of vanadium slag stove, and the rate of recovery of vanadium exceeds more than 10%, and the steel ingot cost reduces by 29 yuan/T steel.Directly alloying process in vanadium slag furnace of the present invention is mainly used in the smelting vanadium-containing low steel.
Description
Directly alloying process in vanadium slag furnace of the present invention belongs to oxide compound directly into electric furnace alloying process field.
The ordinary method of smelting vanadium-containing steel is to add ferro-vanadium or special type contains the vanadium master alloy in molten steel.Developed into the outer DIRECT ALLOYING technology of vanadium slag stove afterwards.
In order to save the preparation section of vanadium slag-reductive agent compound in the outer DIRECT ALLOYING technology of vanadium slag stove, reclaim all useful elements in the vanadium slag better, invented directly alloying process in vanadium slag furnace.
Major technique feature of the present invention is: former block vanadium slag and reduction period slag making materials, reductor are successively added the molten bath, concrete steps comprise that (1) is after electric furnace arrangement for producing steel is smelted the Ex-all oxidation sludge, insert inscription 1.0～1.2kg/t steel to the molten steel deep immediately, and the Ca-Si alloy that adds 0.8～1.0kg/t steel carries out the top deoxidation; (2) add thin slag charge 20～30kg/t steel in stove, it consists of lime: fluorite=(8～8.5): (1.5～2), after fully stirring, get steel sample analysis C, Mn, P, S and required element; (3) once add former block vanadium slag 10～20kg/t steel by calculating, lumpiness≤120mm fully stirs; (4) in the molten bath, add composite deoxidant silicon carbide in batches carry out diffusive deoxidation, the total consumption 5～8kg/t of reduction period silicon carbide steel, and the molten bath fully stirred, add lime and make reduction period basicity R=2.5～3.2; (5) when sample analysis result under the thin slag quote bleach with slag after, can carry out whole furnishing part, temperature, prepare tapping; (6) final deoxygenation is inserted the aluminium amount and is looked steel grade in 0.5～0.8kg/t steel scope; (7) tapping process is emphasized that slag mixes and is dashed; Assurance has intensive deoxidization desulfuration effect; (8) last, 60～90 seconds kinds of ladle argon-blown, pressure 1.5～2.0kg/cm
2From inserting the aluminium pre-deoxidation to tapping, the furnace reduction time only needs 20-30 minute.
Using directly alloying process in vanadium slag furnace of the present invention can make the rate of recovery of vanadium be stabilized in 90～95%.Compare with the outer DIRECT ALLOYING technology of vanadium slag stove, the rate of recovery of vanadium exceeds more than 10%, and the steel ingot cost reduces by 29 yuan/t steel; Beneficial elements such as the vanadium of remaining some amount, titanium, chromium in the vanadium slag metallic iron also have physics iron, chemical iron etc. all to be added utilization fully, and have improved the quality of steel in addition.
Embodiment: in electric furnace, smelt the 23MnV steel.19.7 tons of cold half steel piece and the steel scrap totals of packing into are sent electricity, oxygen blast carbon elimination; Insert aluminium 21kg to the molten steel deep behind the Ex-all oxidation sludge, add Ca-Si alloy 20kg and push up
Deoxidation; Add thin slag charge 530kg subsequently, it consists of and is lime 450kg, fluorite 80kg.After fully stirring, get steel sample analysis C, Mn, P, S and required element.By calculating the former vanadium slag piece 280kg that once adds lumpiness 〉=120mm, ferromanganese 400kg fully stirs.The all molten all backs of slag charge add lime 270kg residue adjustment, make basicity R remain on 2.5～3.2; Add silicon carbide 120kg altogether in batches, and the molten bath is fully stirred.Get sample analysis under the thin slag, final deoxygenation was inserted aluminium 10kg after slag bleached, and started at 25 minutes recovery times from giving when aluminium is inserted in deoxidation.Steel behind elder generation's slag during tapping, slag mixes and dashes, and ladle argon-blown handled for 62 seconds, and pressure is 1.8kg/cm
2Steel ingot check Chemical Composition is as follows: (%) C0.24, and Si0.28, Mn1.43, V0.103, P0.021, S0.024, surplus is Fe.The judgement grade of steel is 23MnV.
Directly alloying process in vanadium slag furnace of the present invention is mainly smelted vanadium-containing low steel with using.
Claims (1)
1, a kind of directly alloying process in vanadium slag furnace successively adds the molten bath with former block vanadium slag and reduction period slag making materials, reductor, it is characterized in that may further comprise the steps:
(1) after electric furnace arrangement for producing steel is smelted the Ex-all oxidation sludge, insert aluminium 1.0～1.2kg/t steel to the molten steel deep immediately, and the Ca-Si alloy that adds 0.8～1.0kg/t steel carries out pre-deoxidation;
(2) add thin slag charge 20～30kg/t steel in stove, it consists of lime: fluorite=(8～8.5): (1.5～2), after fully stirring, get steel sample analysis C, Mn, P, S and required element;
(3) by calculating the former block vanadium slag 10～20kg/t steel of disposable adding, lumpiness≤120mm fully stirs;
(4) in the molten bath, add composite deoxidant silicon carbide in batches carry out diffusive deoxidation, the total consumption 5～8kg/t of reduction period silicon carbide steel, and the molten bath fully stirred, add lime and make reduction period basicity R=2.5～3.2;
(5) when sample analysis result under the thin slag quote bleach with slag after, can carry out whole furnishing part, temperature, prepare tapping;
(6) final deoxygenation is inserted the aluminium amount and is looked steel grade in 0.5～0.8kg/t steel scope;
(7) tapping process will be emphasized that slag mixes and dashes;
(8) last, 60～90 seconds of ladle argon-blown, pressure 1.5～2.0kg/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91109726A CN1026501C (en) | 1991-10-17 | 1991-10-17 | Directly alloying process in vanadium slag furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91109726A CN1026501C (en) | 1991-10-17 | 1991-10-17 | Directly alloying process in vanadium slag furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1071708A true CN1071708A (en) | 1993-05-05 |
| CN1026501C CN1026501C (en) | 1994-11-09 |
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ID=4909949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91109726A Expired - Fee Related CN1026501C (en) | 1991-10-17 | 1991-10-17 | Directly alloying process in vanadium slag furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026501C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798618A (en) * | 2010-03-26 | 2010-08-11 | 河北钢铁股份有限公司承德分公司 | Method for performing vanadium increase and refining in vanadium alloying by utilizing vanadium slag |
| CN102443705A (en) * | 2012-01-04 | 2012-05-09 | 金川集团有限公司 | Composite deoxidizer for preparing metal powder by atomization method |
| CN102584042A (en) * | 2012-01-19 | 2012-07-18 | 攀枝花钢城集团有限公司 | Steel slag compound micro powder and preparation method thereof |
| CN102864271A (en) * | 2012-09-21 | 2013-01-09 | 承德建龙特殊钢有限公司 | Digestion process of vanadium extraction waste slag in semi-steel steelmaking converter |
| CN104611513A (en) * | 2015-02-03 | 2015-05-13 | 河北钢铁股份有限公司承德分公司 | Method for utilizing vanadium in steel slag |
| CN108677016A (en) * | 2018-05-18 | 2018-10-19 | 内蒙古科技大学 | A kind of preparation method of metallurgical titanium slag and ferrotitanium vanadium alloy containing waste denitration catalyst |
| CN109576558A (en) * | 2018-11-16 | 2019-04-05 | 河北工程大学 | The recovery method of valuable constituent element in a kind of vanadium slag |
-
1991
- 1991-10-17 CN CN91109726A patent/CN1026501C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798618A (en) * | 2010-03-26 | 2010-08-11 | 河北钢铁股份有限公司承德分公司 | Method for performing vanadium increase and refining in vanadium alloying by utilizing vanadium slag |
| CN102443705A (en) * | 2012-01-04 | 2012-05-09 | 金川集团有限公司 | Composite deoxidizer for preparing metal powder by atomization method |
| CN102584042A (en) * | 2012-01-19 | 2012-07-18 | 攀枝花钢城集团有限公司 | Steel slag compound micro powder and preparation method thereof |
| CN102864271A (en) * | 2012-09-21 | 2013-01-09 | 承德建龙特殊钢有限公司 | Digestion process of vanadium extraction waste slag in semi-steel steelmaking converter |
| CN104611513A (en) * | 2015-02-03 | 2015-05-13 | 河北钢铁股份有限公司承德分公司 | Method for utilizing vanadium in steel slag |
| CN108677016A (en) * | 2018-05-18 | 2018-10-19 | 内蒙古科技大学 | A kind of preparation method of metallurgical titanium slag and ferrotitanium vanadium alloy containing waste denitration catalyst |
| CN109576558A (en) * | 2018-11-16 | 2019-04-05 | 河北工程大学 | The recovery method of valuable constituent element in a kind of vanadium slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1026501C (en) | 1994-11-09 |
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