CN100338234C - Nuisance free dephosphorized foaming slag in barium series with iron one containing BaSo2 as raw material - Google Patents
Nuisance free dephosphorized foaming slag in barium series with iron one containing BaSo2 as raw material Download PDFInfo
- Publication number
- CN100338234C CN100338234C CNB2004100532048A CN200410053204A CN100338234C CN 100338234 C CN100338234 C CN 100338234C CN B2004100532048 A CNB2004100532048 A CN B2004100532048A CN 200410053204 A CN200410053204 A CN 200410053204A CN 100338234 C CN100338234 C CN 100338234C
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- CN
- China
- Prior art keywords
- oxide
- barium
- slag
- foaming
- foaming slag
- Prior art date
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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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to nuisanceless barium series dephosphorizing foaming slag using iron ore containing BaSO4 as raw material, which is characterized in that the foaming slag is prepared from 35 to 45 wt% of calcium oxide, 4 wt% to 10 wt% of barium oxide, 5 wt% to 8 wt% of magnesium oxide, 5 wt% to 10 wt% of aluminium oxide, 8 wt% to 18 wt% of silicon dioxide, 10 wt% to 20 wt% of iron oxide, 8 wt% to 15 wt% of calcium fluoride and 6 wt% to 10 wt% of carbon. The present invention has the advantages of no nuisance of BaSO4 (heavy spar) before the foaming slag is used, and no need of additionally adding oxidizing agents; no pollution to molten steel and no harm to human bodies of the desulfurated product SF 6 which is formed after the foaming slag is used and is colorless, odorless and nontoxic inert gas; proper basicity, viscosity and surface tension, proper quantity of the solid suspension particles of second phases, high foaming speed, controllable foaming height, long service life of foam, high distribution ratio of phosphorus and no rephosphorization in the later period. The cost of the foaming slag is lower than that of the barium series dephosphorizing foaming slag BaCo3, and the foaming slag promotes the technical progress of the selecting material and the slag series of the dephosphorizing foaming slag including stainless steel.
Description
Technical field
The present invention relates to a kind of barium is the dephosphorization foamy slag, particularly relate to a kind of non-harmful, adopt and to contain BaSO
4(barite) sections ore is the dephosphorization foamy slag as the barium of raw material.
Background technology
General dephosphorization oxidation period (comprising stainless steel oxidation phase dephosphorization) is that the dephosphorization foamy slag generally adopts BaCO with barium at present
3(witherite), BaF
2And BaCl
2, but because of BaCO
3Belong to highly toxic product, BaF
2And BaCl
2Also poisonous, all environment and human body are constituted greatly harm; Indivedual BaSO that adopt
4, but the essential oxygenant that adds in addition.So far do not see to adopt and contain BaSO
4(barite) sections ore is the report of dephosphorization foamy slag raw material as barium.As everyone knows, the calcium oxide with in the alternative dephosphorizing agent of barium oxide can make the phosphoric acid salt capacity improve; Barium be the dephosphorization effect of dephosphorization foamy slag to be better than calcium be the dephosphorization foamy slag, the dephosphorization product B a that the former generates
3(PO
4)
2Dephosphorization product C a than latter's generation
3P
2O
8At high temperature more stable.Adopt BaCO
3Though dephosphorization effect is arranged, runs counter to environmental requirement; And adopt BaSO
4, still need and add oxygenant in addition.
Summary of the invention
The objective of the invention is to solve and contain BaCO in the prior art
3, BaF
2(or) BaCl
2Barium be that the dephosphorization foamy slag causes serious pollution problem.Employing contains BaSO
4The barium of (barite) sections ore preparation is the dephosphorization foamy slag, and is nuisanceless before not only using, the desulfurization product SF that uses the back to form
6Be colourless, odorless, tasteless, nontoxic rare gas element, and need not to add in addition oxygenant.Thus, can make full use of intended use limited, cheap contain BaSO
4(barite) sections ore.The present invention designs a kind of non-harmful employing and contains BaSO
4The sections ore is the dephosphorization foamy slag as the barium of raw material, it is characterized in that: by calcium oxide, barium oxide, magnesium oxide, aluminium sesquioxide, and silicon-dioxide, ferric oxide, bifluoride calcium, carbon are formed.The weight percent of its constituent is: calcium oxide 35%---45%, and barium oxide 4%---10%, magnesium oxide 5%---8%, aluminium sesquioxide 5%---10%, silicon-dioxide 8%---18%, ferric oxide 10%---20%, bifluoride calcium 8%---15%, carbon 6%---14%.The weight percent of its constituent is: calcium oxide 35.5%, barium oxide 5%, magnesium oxide 5.9%, aluminium sesquioxide 5.1%, silica 1 4.5%, ferric oxide 17.5%, bifluoride calcium 8.8%, carbon 7.7%.Advantage of the present invention is to use preceding BaSO
4(barite) is nuisanceless, and need not to add in addition oxygenant; The desulfurization product SF that uses the back to form
6Be colourless, odorless, tasteless, nontoxic rare gas element, pollution-free to molten steel, human body is not hindered.Basicity, viscosity and surface tension are suitable, and the second phase solid suspension particle is an amount of, and lather quickness is fast, foaming height is controlled, foam life is long; Barium is that the dephosphorization foamy slag is different with oxygen enrichment spray sic foam slag with traditional oxygen enrichment spray carbon foamy slag, can increase the activity quotient f of phosphorus in the molten steel on the one hand
[p], reduce (P in the slag
2O
5) activity quotient f
(P2O5), as (CaO)/when (FeO) ratio is 2.5-3.5, the partition ratio (P of phosphorus
2O
5)/[P] reach maximum value; Later stage does not have the anxiety of rephosphorization, and cost is lower than and contains BaCO
3Barium be the dephosphorization foamy slag.Adopt BaSO
4(barite) sections ore is the dephosphorization under oxidizing atmosphere that the dephosphorization foamy slag not only can be used for carbon steel, steel alloy as the barium of raw material, also can be used for stainless dephosphorization under oxidizing atmosphere.
Below in conjunction with embodiment the present invention is elaborated,
Embodiment
To contain BaSO
4The barium of (barite) sections ore is that chemical ingredients (by weight) meter of dephosphorization foamy slag is got CaO35.5Kg, BaO5Kg, MgO5.9Kg, Al
2O
35.1Kg, SiO
214.5Kg, FeO17.5Kg, CaF
28.8Kg C7.7Kg when granularity is controlled to be 0-5mm, stirs, and through baking, packs behind moisture content of finished products≤0.5%.This contains BaSO during use
4The barium of (barite) sections ore is dephosphorization foamy slag nontoxicity; The desulfurization product SF that uses the back to form
6Be colourless, odorless, tasteless, nontoxic rare gas element, pollution-free to molten steel, human body is not hindered; Under nontoxic prerequisite, can realize: bubble, submerged arc speed is fast; Foam height is controlled, foam life is long; Dephosphorization efficient height, later stage do not have the anxiety of rephosphorization; Shorten to some extent tap to tap time, melting electric consumption decreases; Supplementary product onsumption reduces to some extent, furnace life increases; When improving the Modern Electric Arc Furnace Steelmaking efficiency, advanced the technical progress of selection of dephosphorization foamy slag and slag system.
Claims (2)
1, a kind of non-harmful employing contains BaSO
4The sections ore is the dephosphorization foamy slag as the barium of raw material, it is characterized in that: by calcium oxide, barium oxide, magnesium oxide and aluminium sesquioxide mixture, and silicon-dioxide, ferric oxide, bifluoride calcium, carbon are formed, and the weight percent of its constituent is
Calcium oxide 35%---45%,
Barium oxide 4%---10%,
Magnesium oxide 5%---8%,
Aluminium sesquioxide 5%---10%,
Silicon-dioxide 8%---18%,
Ferric oxide 10%---20%,
Bifluoride calcium 8%---15%,
Carbon 6%---14%.
2, contain BaSO by the described a kind of non-harmful employing of claim 1
4The sections ore is the dephosphorization foamy slag as the barium of raw material, it is characterized in that: the weight percent of its constituent is
Calcium oxide 35.5%,
Barium oxide 5%,
Magnesium oxide 5.9%,
Aluminium sesquioxide 5.1%,
Silica 1 4.5%,
Ferric oxide 17.5%,
Bifluoride calcium 8.8%,
Carbon 7.7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100532048A CN100338234C (en) | 2004-07-27 | 2004-07-27 | Nuisance free dephosphorized foaming slag in barium series with iron one containing BaSo2 as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100532048A CN100338234C (en) | 2004-07-27 | 2004-07-27 | Nuisance free dephosphorized foaming slag in barium series with iron one containing BaSo2 as raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1727298A CN1727298A (en) | 2006-02-01 |
| CN100338234C true CN100338234C (en) | 2007-09-19 |
Family
ID=35926844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100532048A Expired - Fee Related CN100338234C (en) | 2004-07-27 | 2004-07-27 | Nuisance free dephosphorized foaming slag in barium series with iron one containing BaSo2 as raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100338234C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494412C (en) * | 2006-03-27 | 2009-06-03 | 宝山钢铁股份有限公司 | Process of treating BaO stainless steel oxidation dephosphorizing slag |
| CN108588337A (en) * | 2018-06-07 | 2018-09-28 | 上海应用技术大学 | A kind of nanometer dephosphorization slag former and preparation method thereof suitable for middle high phosphorus molten steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124780A (en) * | 1995-10-16 | 1996-06-19 | 李林 | Steel foam dephosphorizing machine |
| CN1130212A (en) * | 1995-05-05 | 1996-09-04 | 布禾 | Technology for dephospyhorizing and forced desulfurating in cupola |
| WO2003085141A1 (en) * | 2002-04-10 | 2003-10-16 | Sms Demag Aktiengesellschaft | Method and device for producing carbon steels or stainless steels by blowing high-phosphorus pig iron in an electric arc furnace or in a converter vessel |
-
2004
- 2004-07-27 CN CNB2004100532048A patent/CN100338234C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130212A (en) * | 1995-05-05 | 1996-09-04 | 布禾 | Technology for dephospyhorizing and forced desulfurating in cupola |
| CN1124780A (en) * | 1995-10-16 | 1996-06-19 | 李林 | Steel foam dephosphorizing machine |
| WO2003085141A1 (en) * | 2002-04-10 | 2003-10-16 | Sms Demag Aktiengesellschaft | Method and device for producing carbon steels or stainless steels by blowing high-phosphorus pig iron in an electric arc furnace or in a converter vessel |
Non-Patent Citations (2)
| Title |
|---|
| 新型BAS04渣系脱磷剂的研制及应用 何云华，特钢技术，第2期 1995 * |
| 钡系多功能泡沫渣应用研究 戴栋等，河北冶金，第2期 1996 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1727298A (en) | 2006-02-01 |
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Granted publication date: 20070919 |