CN101139677A - Method for producing inconel by submerged arc furnace - Google Patents
Method for producing inconel by submerged arc furnace Download PDFInfo
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- CN101139677A CN101139677A CNA2007100625474A CN200710062547A CN101139677A CN 101139677 A CN101139677 A CN 101139677A CN A2007100625474 A CNA2007100625474 A CN A2007100625474A CN 200710062547 A CN200710062547 A CN 200710062547A CN 101139677 A CN101139677 A CN 101139677A
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- ore
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- nichrome
- smelting
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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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Abstract
The invention relates to a production method of Ni-Cr-Fe alloy, in particular to a method for producing Ni-Cr-Fe alloy by using an ore heating furnace. In the method, the raw material is nickel oxide ore; the fuel for calcining the crude ore contains P of no more than 0.02 per cent; the reducer used in smelting by the ore heating furnace contains P of no more than 0.02 per cent. The invention uses low-phosphorous fuel and reducer, the phosphorous contained in the product can meet the requirement for stainless steel, and is not necessary to dephosphorize again in refining or directly smelting stainless steel, the chromium is kept in the product, so as to become Ni-Cr-Fe alloy. Compared with the traditional method, the invention avoids waste and reduces operations and the cost in smelting alloy.
Description
Technical field:
The present invention relates to the nichrome production method, especially a kind of method of producing nichrome with the hot stove in ore deposit.
Background technology:
Ferronickel is a better raw material such as smelting stainless steel, casting, generally is to be that raw material forms with mine heat furnace smelting with the nickel oxide ore.Not only nickeliferous and iron also contains part chromium because of nickel oxide ore, contains the chromium difference according to raw ore, and the hot stove in ore deposit refines and contains the about 3-5% of chromium in the raw ferro nickel, have up to 8%.Because impurity such as phosphorous in the raw ferro nickel, sulphur are very high, so need through refining with impurity removals such as phosphorus sulphur, desulfurization needs reducing atmosphere, can be easy to sulphur is reduced to very low with conventional desulfurizing iron technology, the aerobic gasification atmosphere of dephosphorization changes phosphorus oxidation in the slag over to by the oxygen in oxygen blast or the dephosphorizing agent and to remove.Chromium is that the chromium initial oxidation that is to say before phosphorus oxidation than the active element of phosphorus, and chromium is removed prior to phosphorus oxidation when dephosphorization, afterwards could dephosphorization.Though dephosphorizing process can drop to phosphorus the desired level of standard, also chromium is removed together inevitably, adds ferrochrome during smelting stainless steel again, causes the serious waste of chromium resource.
Summary of the invention:
The present invention seeks to the problems referred to above of existing at nickel iron smelting process, and to provide a kind of be raw material with the nickel oxide ore, the method for producing nichrome with the hot stove in ore deposit that can protect chromium.
Realize that the technical scheme that the object of the invention adopts is: a kind of method of producing nichrome with the hot stove in ore deposit is characterized in that:
A, raw materials used be nickel oxide ore;
Fuel used P≤0.02% that contains when b, whole ore roasting;
Used reductive agent contains P≤0.02% when c, mine heat furnace smelting.
Can add nickle contained discarded material in the above-mentioned raw materials.
Above-mentioned reductive agent can be various carbonaceous materials.
Above-mentioned whole ore roasting adopts stoving process or sintering process.
Advantage of the present invention is:
1. chromium can be retained in the alloy well, can add ferrochrome less during smelting stainless steel, avoid the wasting of resources.
2. because of in alloy, keeping the chromium of 3-5%, can reduce the stainless steel smelting cost.
3. because of institute of the present invention nickel metallurgy ferrochrome is phosphorous low, can reach stainless requirement, not need refining dephosphorization, reduce operation, reduce the alloy smelting cost.
4. because of the present invention does not need refining dephosphorization, reduce the dephosphorization operation one, thereby reduce by a slag making, reduced the amount of metal that slagging process is taken away, improved metal recovery rate.
Embodiment:
Below in conjunction with embodiment in detail the present invention is described in detail.
Embodiment 1:
With the nickel oxide ore is raw material, be fuel with hard coal during sintering, hard coal is phosphorous 0.019%, is reductive agent with blue charcoal during mine heat furnace smelting, blue charcoal phosphorous 0.008%, the nichrome of producing phosphorous 0.027%, nickel 12.5%, chromium 3.3%, phosphorus content are lower than the requirement of stainless steel 0.035%, do not need dephosphorization, chromium can all be retained in the alloy.
Embodiment 2:
With the nickel oxide ore is raw material, be fuel with hard coal during oven dry, hard coal is phosphorous 0.005%, is reductive agent with blue charcoal during mine heat furnace smelting, blue charcoal phosphorous 0.008%, the nichrome of producing phosphorous 0.015%, nickel 13.8%, chromium 4.6%, phosphorus content is far below the requirement of stainless steel 0.035%, do not need dephosphorization, chromium can all be retained in the alloy.
Embodiment 3:
With the nickel oxide ore is raw material, be fuel with coke powder during sintering, phosphorous 0.003%, be reductive agent with the coke during mine heat furnace smelting, coke phosphorous 0.018%, the nichrome of producing phosphorous 0.03%, nickel 13.8%, chromium 3.2%, phosphorus content are lower than the requirement of stainless steel 0.035%, do not need dephosphorization, chromium can all be retained in the alloy.
Claims (4)
1. method of producing nichrome with the hot stove in ore deposit is characterized in that:
A, raw materials used be nickel oxide ore;
Fuel used P≤0.02% that contains when b, whole ore roasting;
Used reductive agent contains P≤0.02% when c, mine heat furnace smelting.
2. method of producing nichrome with the hot stove in ore deposit according to claim 1 is characterized in that: can add nickle contained discarded material in the raw material.
3. method of producing nichrome with the hot stove in ore deposit according to claim 1, it is characterized in that: reductive agent can be various carbonaceous materials.
4. method of producing nichrome with the hot stove in ore deposit according to claim 1, it is characterized in that: whole ore roasting adopts stoving process or sintering process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100625474A CN101139677A (en) | 2007-08-08 | 2007-08-08 | Method for producing inconel by submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100625474A CN101139677A (en) | 2007-08-08 | 2007-08-08 | Method for producing inconel by submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101139677A true CN101139677A (en) | 2008-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100625474A Pending CN101139677A (en) | 2007-08-08 | 2007-08-08 | Method for producing inconel by submerged arc furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN101139677A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875206A (en) * | 2022-04-11 | 2022-08-09 | 辽宁石源科技有限公司 | Phosphorus removal and chromium protection double process for smelting chromium-containing high-phosphorus metal liquid from laterite-nickel ore |
| CN115558816A (en) * | 2022-09-01 | 2023-01-03 | 广东广青金属科技有限公司 | Nickel-chromium alloy smelting method and system by utilizing sensible heat of flue gas and furnace slag of submerged arc furnace |
-
2007
- 2007-08-08 CN CNA2007100625474A patent/CN101139677A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875206A (en) * | 2022-04-11 | 2022-08-09 | 辽宁石源科技有限公司 | Phosphorus removal and chromium protection double process for smelting chromium-containing high-phosphorus metal liquid from laterite-nickel ore |
| CN114875206B (en) * | 2022-04-11 | 2023-09-19 | 辽宁石源科技有限公司 | Double dephosphorization and chromium protection process for smelting chromium-containing high-phosphorus metal liquid from laterite-nickel ore |
| CN115558816A (en) * | 2022-09-01 | 2023-01-03 | 广东广青金属科技有限公司 | Nickel-chromium alloy smelting method and system by utilizing sensible heat of flue gas and furnace slag of submerged arc furnace |
| CN115558816B (en) * | 2022-09-01 | 2023-09-19 | 广东广青金属科技有限公司 | Smelting method and system for nichrome by utilizing sensible heat of flue gas and slag of submerged arc furnace |
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Open date: 20080312 |