CN108193020A - A kind of method of phosphorous nickel iron refining dephosphorization - Google Patents
A kind of method of phosphorous nickel iron refining dephosphorization Download PDFInfo
- Publication number
- CN108193020A CN108193020A CN201711452443.4A CN201711452443A CN108193020A CN 108193020 A CN108193020 A CN 108193020A CN 201711452443 A CN201711452443 A CN 201711452443A CN 108193020 A CN108193020 A CN 108193020A
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- CN
- China
- Prior art keywords
- oxygen blast
- phosphorus
- nickel
- lime
- oxygen
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of method of phosphorous nickel iron refining dephosphorization, it is characterised in that include the following steps：（1）Electric arc furnace bottom first adds 200~600Kg, and specification is the blocky lime of 10mm~50mm, is laid in electric arc furnace bottom；（2）Add the useless nickel of 5~15t phosphorous 0.6%~1.5%, be powered fusing, has a power failure after 50%~75% useless nickel fusing；（3）Oxygen blowing is changed to, oxygen pressure is controlled in 0.6MPa~0.8MPa；（4）All molten rear surface to the greatest extent adds blocky 200~240Kg of lime, iron oxide 200~300Kg of phosphorus to nickel to be given up, and oxygen blast is melted to the greatest extent, stops oxygen blast；（5）Add blocky 200~240Kg of lime, iron oxide 200~300Kg of phosphorus, carry out oxygen blast；After lime and iron oxide phosphorus all melt to the greatest extent, stop oxygen blast, temperature is controlled at 1550 DEG C~1610 DEG C；Turndown stream slag, slag 85%~90% in the stove that pours off take aluminium alloy to analyze phosphorus content, require to come out of the stove as phosphorus content reaches user, Control for Kiln Temperature is at 1550 DEG C~1650 DEG C；The operating method of this step of the continuation of user's requirement is such as not achieved.
Description
Technical field
The invention belongs to metallurgical technology field, more particularly to a kind of method of phosphorous nickel iron refining dephosphorization.
Background technology
Nickel is referred to as strategy metal, while nickel resources are again very deficient.Stainless steel and special steel are widely used in, causes to supply short
It lacks.It sorted, sorted out by recycling various useless nickel resources, removal of impurities processing, qualified former material is provided for smelting stainless steel enterprise
Material reduces the production cost of smelting stainless steel, while has saved the utility value that nickel resources substantially increase nickel for country.
A kind of electric arc furnaces Low-cost efficient dephosphorization smelting process of the prior art, application publication number：CN102965467A, smelting
The furnace material main ingredient scope of application is：C:0%~10%, Si:0%~8%, Mn:0%~5%, P:0.01%~0.50%, Cr:0%~
8%、Ni:0%~40%, S:0%~0.2%, surplus Fe, it is clear that visible above-mentioned phosphorus content is relatively low, complex process.
Invention content
A kind of method of phosphorous nickel iron refining dephosphorization, it is characterised in that include the following steps：
（1）Electric arc furnace bottom first adds 200~600Kg, blocky lime of the specification for 10mm~50mm, wherein CaO>90%、C<
0.4%、S<0.06%th, activity degree >=320 are laid in electric arc furnace bottom；
（2）Add the useless nickel of 5~15t phosphorous 0.6%~1.5%, be powered fusing, has a power failure after 50%~75% useless nickel fusing；
（3）It is changed to oxygen blowing, oxygen pressure control keeps the oxygen blast head of oxygen blast stick should be in 0.6MPa~0.8MPa, oxygen blast
The middle part of alloy solution carries out oxygen blast, and alloy solution rotation is kept during oxygen blast；It can accelerate to melt and expand oxidation
Contact surface accelerates the oxidation rate of phosphorus, saves electric energy；
（4）All molten rear surface to the greatest extent adds blocky 200~240Kg of lime, iron oxide 200~300Kg of phosphorus to nickel to be given up, and oxygen blast is melted to the greatest extent,
Stop oxygen blast, temperature control is at 1550 DEG C~1610 DEG C, turndown stream slag, and slag 85%~90% in the stove that pours off returns open hearth body；
（5）Add blocky 200~240Kg of lime, iron oxide 200~300Kg of phosphorus, carry out oxygen blast；Treat that lime is whole with iron oxide phosphorus
After melting to the greatest extent, stop oxygen blast, temperature is controlled at 1550 DEG C~1610 DEG C；Turndown stream slag, slag 85%~90% in the stove that pours off, takes aluminium alloy
Phosphorus content is analyzed, requires to come out of the stove as phosphorus content reaches user, Control for Kiln Temperature is at 1550 DEG C~1650 DEG C；User is such as not achieved
It is required that continuation this step operating method.
The present invention is suitable for the higher useless nickel refining dephosphorization of phosphorus content, particularly useless nickel of the phosphorus content 0.6%~1.5%.
Specific embodiment
Embodiment 1
Reasonably combined phosphorous useless nickel, range of the control phosphorus content 0.6%~1.5%, nickel content are recycled according to the requirement nickel of client
For rate up to 99%, electric arc furnace bottom first adds 200Kg, the blocky lime of 10mm~50mm（CaO>90%、C<0.4%、S<0.06%th, it is active
Degree >=320）It is laid in after furnace bottom plus the useless nickel of 5t phosphorous 0.6%~1.5%, energization is melted.Stop after 50% useless nickel fusing
Electricity, is changed to oxygen blowing, and oxygen pressure control keeps the oxygen blast head of oxygen blast stick should be molten in alloy in 0.6~0.8MPa, oxygen blast
The middle part of liquid carries out oxygen blast, and is kept at an angle, and rotates alloy solution.It can accelerate to melt and expand connecing for oxidation
Contacting surface accelerates the oxidation rate of phosphorus, saves electric energy, all molten rear surface to the greatest extent plus block-like lime 200Kg is stated, aoxidizes nickel to be given up
Iron phosphorus 200Kg, oxygen blast are melted to the greatest extent, stop oxygen blast, and temperature control is at 1550 DEG C~1610 DEG C, turndown stream slag, and slag 85% in the stove that pours off~
90%, return open hearth body.In addition stating blocky lime 200Kg, iron oxide phosphorus 200Kg carries out oxygen blast.Oxygen blowing method is same as described above, treats
After lime all melts to the greatest extent with iron oxide phosphorus, stop oxygen blast.Temperature is controlled at 1550 DEG C~1610 DEG C, and turndown stream slag pours off in stove
Slag 85%~90%, take aluminium alloy analyze phosphorus content, as phosphorus content reach user require come out of the stove, Control for Kiln Temperature 1550 DEG C~
The above-mentioned operating method of continuation of user's requirement is such as not achieved in 1650 DEG C of.
Embodiment 2
Reasonably combined phosphorous useless nickel, range of the control phosphorus content 0.6%~1.5%, nickel content are recycled according to the requirement nickel of client
For rate up to 99%, electric arc furnace bottom first adds 400Kg, the blocky lime of 10mm~50mm（CaO>90%、C<0.4%、S<0.06%th, it is active
Degree >=320）It is laid in after furnace bottom plus the useless nickel of 10t phosphorous 0.6%~1.5%, energization is melted.After 2/3 useless nickel fusing
Have a power failure, be changed to oxygen blowing, oxygen pressure control keeps the oxygen blast head Ying He of oxygen blast stick in 0.6MPa~0.8MPa, oxygen blast
The middle part of gold solution carries out oxygen blast, and is kept at an angle, and rotates alloy solution.（It can accelerate to melt and expand oxygen
The contact surface of change accelerates the oxidation rate of phosphorus, saves electric energy）The molten rear surface to the greatest extent of nickel whole to be given up, which adds, states block-like lime
220Kg, iron oxide phosphorus 260Kg, oxygen blast are melted to the greatest extent, stop oxygen blast, and temperature is controlled at 1550 DEG C~1610 DEG C, and turndown stream slag pours off
Slag 85%~90% in stove returns open hearth body.In addition stating blocky lime 220Kg, iron oxide phosphorus 260Kg carries out oxygen blast.（Oxygen blowing method
It is same as described above）After lime and iron oxide phosphorus all melt to the greatest extent, stop oxygen blast.Temperature control is at 1550 DEG C~1610 DEG C, turndown
Slag is flowed, slag 85%~90% in the stove that pours off takes aluminium alloy to analyze phosphorus content, requires to come out of the stove as phosphorus content reaches user, furnace temperature
Control the above-mentioned operating method of continuation that user's requirement is such as not achieved in 1550 DEG C~1650 DEG C.
Embodiment 3
Reasonably combined phosphorous useless nickel, range of the control phosphorus content 0.6%~1.5%, nickel content are recycled according to the requirement nickel of client
For rate up to 99%, electric arc furnace bottom first adds 600Kg, the blocky lime of 10mm~50mm（CaO>90%、C<0.4%、S<0.06%th, it is active
Degree >=320）It is laid in after furnace bottom plus the useless nickel of 15t phosphorous 0.6%~1.5%, energization is melted.After 75% useless nickel fusing
Have a power failure, be changed to oxygen blowing, oxygen pressure control keeps the oxygen blast head Ying He of oxygen blast stick in 0.6MPa~0.8MPa, oxygen blast
The middle part of gold solution carries out oxygen blast, and is kept at an angle, and rotates alloy solution.All molten rear surface to the greatest extent adds nickel to be given up
Block-like lime 240Kg, iron oxide phosphorus 300Kg are stated, oxygen blast is melted to the greatest extent, stops oxygen blast, and temperature is controlled at 1550 DEG C~1610 DEG C, inclined
Stove stream slag, slag 85%~90% in the stove that pours off return open hearth body.In addition stating blocky lime 240Kg, iron oxide phosphorus 300Kg is blown
Oxygen.After lime and iron oxide phosphorus all melt to the greatest extent, stop oxygen blast.Temperature is controlled at 1550 DEG C~1610 DEG C, and turndown stream slag pours off
Slag 85%~90% in stove takes aluminium alloy to analyze phosphorus content, requires to come out of the stove as phosphorus content reaches user, Control for Kiln Temperature is 1550
DEG C~the above-mentioned operating method of continuation of user's requirement is such as not achieved in 1650 DEG C of.
Claims (1)
- A kind of 1. method of phosphorous nickel iron refining dephosphorization, it is characterised in that include the following steps：（1）Electric arc furnace bottom first adds 200~600Kg, blocky lime of the specification for 10mm~50mm, wherein CaO>90%、C< 0.4%、S<0.06%th, activity degree >=320 are laid in electric arc furnace bottom；（2）Add the useless nickel of 5~15t phosphorous 0.6%~1.5%, be powered fusing, has a power failure after 50%~75% useless nickel fusing；（3）It is changed to oxygen blowing, oxygen pressure control keeps the oxygen blast head of oxygen blast stick should be in 0.6MPa~0.8MPa, oxygen blast The middle part of alloy solution carries out oxygen blast, and alloy solution rotation is kept during oxygen blast；（4）All molten rear surface to the greatest extent adds blocky 200~240Kg of lime, iron oxide 200~300Kg of phosphorus to nickel to be given up, and oxygen blast is melted to the greatest extent, Stop oxygen blast, temperature control is at 1550 DEG C~1610 DEG C, turndown stream slag, and slag 85%~90% in the stove that pours off returns open hearth body；（5）Add blocky 200~240Kg of lime, iron oxide 200~300Kg of phosphorus, carry out oxygen blast；Treat that lime is whole with iron oxide phosphorus After melting to the greatest extent, stop oxygen blast, temperature is controlled at 1550 DEG C~1610 DEG C；Turndown stream slag, slag 85%~90% in the stove that pours off, takes aluminium alloy Phosphorus content is analyzed, requires to come out of the stove as phosphorus content reaches user, Control for Kiln Temperature is at 1550 DEG C~1650 DEG C；User is such as not achieved It is required that continuation this step operating method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452443.4A CN108193020A (en) | 2017-12-28 | 2017-12-28 | A kind of method of phosphorous nickel iron refining dephosphorization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452443.4A CN108193020A (en) | 2017-12-28 | 2017-12-28 | A kind of method of phosphorous nickel iron refining dephosphorization |
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| Publication Number | Publication Date |
|---|---|
| CN108193020A true CN108193020A (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452443.4A Pending CN108193020A (en) | 2017-12-28 | 2017-12-28 | A kind of method of phosphorous nickel iron refining dephosphorization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527783A (en) * | 2019-10-14 | 2019-12-03 | 江苏江南铁合金有限公司 | A kind of technique improving the nickel recovery rate in ferronickel production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052732A (en) * | 2001-12-21 | 2003-06-27 | 주식회사 포스코 | Method for refining of high-nickel alloy of AOD |
| CN101338354A (en) * | 2008-08-08 | 2009-01-07 | 昆明理工大学 | Phosphorus-containing coarse nickel iron refining dephosphorization method |
| CN102061357A (en) * | 2011-01-17 | 2011-05-18 | 中国恩菲工程技术有限公司 | Dephosphorization refining process for phosphorus-containing coarse ferronickel |
| CN103451457A (en) * | 2013-08-26 | 2013-12-18 | 江苏大学 | Method for preparing high-quality ferronickel |
| CN104673970A (en) * | 2015-02-09 | 2015-06-03 | 东北大学 | Oxidizing dephosphorization method for high-silicon high-phosphorus chromium-nickel-containing molten iron |
-
2017
- 2017-12-28 CN CN201711452443.4A patent/CN108193020A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052732A (en) * | 2001-12-21 | 2003-06-27 | 주식회사 포스코 | Method for refining of high-nickel alloy of AOD |
| CN101338354A (en) * | 2008-08-08 | 2009-01-07 | 昆明理工大学 | Phosphorus-containing coarse nickel iron refining dephosphorization method |
| CN102061357A (en) * | 2011-01-17 | 2011-05-18 | 中国恩菲工程技术有限公司 | Dephosphorization refining process for phosphorus-containing coarse ferronickel |
| CN103451457A (en) * | 2013-08-26 | 2013-12-18 | 江苏大学 | Method for preparing high-quality ferronickel |
| CN104673970A (en) * | 2015-02-09 | 2015-06-03 | 东北大学 | Oxidizing dephosphorization method for high-silicon high-phosphorus chromium-nickel-containing molten iron |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527783A (en) * | 2019-10-14 | 2019-12-03 | 江苏江南铁合金有限公司 | A kind of technique improving the nickel recovery rate in ferronickel production |
| CN110527783B (en) * | 2019-10-14 | 2021-05-28 | 江苏江南铁合金有限公司 | Process for improving nickel yield in nickel iron production |
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Application publication date: 20180622 |
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