AU623969B2 - Method and apparatus for manufacturing high-grade nickel matte - Google Patents
Method and apparatus for manufacturing high-grade nickel matte Download PDFInfo
- Publication number
- AU623969B2 AU623969B2 AU48606/90A AU4860690A AU623969B2 AU 623969 B2 AU623969 B2 AU 623969B2 AU 48606/90 A AU48606/90 A AU 48606/90A AU 4860690 A AU4860690 A AU 4860690A AU 623969 B2 AU623969 B2 AU 623969B2
- Authority
- AU
- Australia
- Prior art keywords
- smelting furnace
- furnace
- suspension smelting
- matte
- slag
- 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.)
- Expired
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 84
- 229910052759 nickel Inorganic materials 0.000 title claims description 42
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 238000000034 method Methods 0.000 title claims description 27
- 238000003723 Smelting Methods 0.000 claims description 60
- 239000000725 suspension Substances 0.000 claims description 49
- 239000002893 slag Substances 0.000 claims description 28
- 239000012141 concentrate Substances 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 8
- 239000003500 flue dust Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- HCTVWSOKIJULET-LQDWTQKMSA-M phenoxymethylpenicillin potassium Chemical compound [K+].N([C@H]1[C@H]2SC([C@@H](N2C1=O)C([O-])=O)(C)C)C(=O)COC1=CC=CC=C1 HCTVWSOKIJULET-LQDWTQKMSA-M 0.000 claims 1
- 239000007789 gas Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
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
- Manufacture And Refinement Of Metals (AREA)
Description
62 9 i 6S9t
AUSTRALIA
PATENTS ACT 1952 Form COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE Short Title: Int. Cl: Application Number: Lodged: 00 o 0 00,0 0 00 0 0 0 00C0 0 00 Complete Specification-Lodged: Accepted: Lapsed: Published: Priority: Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: C 00 C 0 C 39 OUTOKUMPU OY o Address of Applicant: TOOLONKATU 4 00103 HELSINKI
FINLAND
Actual Inventor: Address for Service: GRIFFITH HACK CO., 601 St. Kilda Road, Melbourne, Victoria 3004, Australia.
Complete Specification for the invention entitled: METHOD AND APPARATUS FOR MANUFACTURING HIGH-GRADE NICKEL MATTE.
The following statement is a full description of this invention including the best method of performing it known to me:- 1 METHOD AND APPARATUS FOR MANUFACTURING HIGH-GRADE NICKEL MATTE The present livention relates to a method and apparatus for manufacturing high-grade nickel matte in a combination of suspension smeltzing furnace and electric furnace.
conventilonally high-grade nickel matte is manufactured of sulphidic concentrates as follows: first the concentrate is dried and smelted in a suspension smelting furnace into nickel matte. The nickel matte thus obtained is further convye rted to high-grade nickel mratte, where the combined content of nickel and copper is 72-75% by weight, for instance in a Pierce-Smith type converter. In addition to this, the slag from both the suspension smelting furnace and the converter is cleaned in an electric furnace, wherefrom. the obtained mratte is returned as feed to the converter. The gases created in the process, both from the suspension smelting furnace and from the converter, are collected and used in the production of sulphuric acid.
The above described convenional method for manufacturing high-grade nickel matte is reliable and has been tried and found, but it also has some drawbacks. Such d-awbacks are 0 C. for instance its high investing costs. Moreover, the process forms two different gas flows, of which the other -the converter gas flow based on the blating technique -Is highly variable in quantity, which makes the gas treatment and sulphui c acid production expensive, The use of the converter also leads to problems with smoke in the workina areas, because the converter hood must be shifted at the different stages of the convertinq process. Furthermore, the pxocess requires shifting of the molten mateiIal from the suspension smelting furnace into the convetL4,Z and from the converter to the electric furnace as well as from the electric furnace to the converter. owing to the above described reasons, the process renders a large aamount of 2 intermediate products, which aga-n cause expenses in their treatment, smelting and cleaning.
The object of the present invention is to eliminate some of the drawbacks of the prior art and to achieve a better and simpler method for manufacturing high-grade nickel matte, as well as an apparatus suited for the method, ,herein the drawbacks caused by the converting process are eliminated by using a combination of suspension smelting furnace and electric furnace in the manufacturing of high-grade nickel matte.
Therefore the invention provides a method for manufacturing high-grade nickel matte, comprising the steps of; S, a) feeding a concentrate under treatment, oo 15 together with flux, recirculated flue dust and oxidizing gas into a suspension smelting furnace, b) forming in the suspension smelting furnace a slag and a high-grade nickel matte, c) conducting at least the slag from the "o 20 suspension smelting furnace into an electric furnace where it is reduced in the presence of a reducing agent s.o that °i c there is formed electric furnace slag and metallicized .o0PC matte and; d) returning at least part of the metalllcized matte from the electric furnace as feed to the suspension smelting furnace.
The Invention further provides apparatus for use in the manufacturing of high-grade nickel matte, comprising: a suspension smelting furnace and feed means to the smelting furnace, the feed means feeding a concentrate under treatment together with flux, recirculated flue dust and oxidizing gas to the suspension smelting furnace to form a slag and a high-grade nickel matte; and 1-t an electric furnace interconnected to the
I
suspension smelting furnace by first and second interconnection means, the first interconnection means conducting at least the slag from the suspension smelting furnace into the electric furnace where it is reduced i' the presence of a reducing agent to form electric furna:e slag and metallicized matte, and the second interconnection means returning at least part of the metallicized matte from the electric furnace to the suspension smelting furnace as feed.
Preferably in the manufacturing method of high-grade nickel matte there is produced high-grade nickel matte in Sa suspension smelting furnace, such as a flash smelting furnace. As a result from the high nickel content of the A high-grade matte, and the high oxygen potential of the furnace, the nickel content of the slag from the suspension smelting furnace is also high. The slag from o. the suspension smelting furnace is reduced in an electric furnace, which is either separate or connected to the 00 0 suspension smelting furnace by a special separating 20 member. If desired, at least part of the high-grade nickel matte can also be fed into the electric furnace.
The matte created in the electric furnace is at least partly reci'rculated back t- the suspension smelting furnace. The recirculated matte, which is fed into the suspension smelting furnace either as granulated or as molten: further reduces the slag from the suspension smelting furnace, and simultaneously diminishes the amount of the recirculated material. Thus, the method and apparatus for manufacturing high-grade nickel matte make it possible to eliminate the use of the converter as one process stage.
Consequently, the method for manufacturing high-grade nickel matte of the present invention leads to remarkable advantages '00 f in comparison with conventional technique. While using granulated matte from an electric furnace as the feed for the suspension smelting furnace, it is unnecessary to shift molten materials in the manufacturing method of the present invention, and as a result the smoke problems in the working area are essentially reduced. Accordingly, there are essentially no intermediate products formed in connection with the manufacturing of high-grade nickel matte.
Furthermore, according to the invention there is created only ouo one essentially even gas flow, which lowers the costs of the o sulphuric acid production andthe gas treatment.
U VO oj While applying the method and apparatus for manufacturing high-grade nickel matte of the present invention in a new production unit, the spaces and other facilities required by the converter can be excluded from the very beginning. This makes the production unit more compact and essentially cheaper in investing costs, as compared to the prior art.
Accordingly, the demand for labour is reduced 6rwing to the a oo manufacturing method of high-grade nickel matte of Lhe present invention.
The manufacturing of high-grade nickel matte according to the present invention can also be applied to an existing production unit, because the technology used in the method is known as such. But in the manufacturing method of high-grade nickel matte of the present invention, both the coupling of the equipment together and the method for running the highgrade nickel matte production are essentially different from those of the prior art.
The invention is explained in more detail below, with reference to the appended drawings, where figure 1 is an illustration of a preferred embodiment of the invention, seen in a side-view cross-section, and figure 2 is an illustration of another preferred embodiment of the invention, seen in a side-view cross-section, 4 According to figure 1, into the reaction shaft 2 of a suspension smelting furnace 1, there is fed oxidizing gas 3, flux 4, concentrate 5 and matte 6 formed in an electric furnace, as well as flue dust 7 ob'-tained from the cooling 21 of exhaust gases. The gases created in the suspension smelting furnace 1 are removed through the uptake shaft 8 to the gas treatment in the gas cooling system 21. But the slagI 9 from the suspension smelting furnace 1 and the produced high-grade nickel matte 10 are removed from the settler 11 0 ru respectively through the discharge hatches 19 and The slag 9 from the suspension smelting furnace is further conveyed to the electric furnace 12, where the slag 9 is o" 0 reduced by means of coke 13 used as the reducing agent. As a result from the reduction process, there is created slag 14 and metallicized matte 15, which are removed from the electric furnace 12 respectively through the discharge hatches 16 and 17. The metallicized matte 15 is subjected to 0 0 00 granulation 18 after removal from the furnace. The granulated matte 6 Is returned as feed to the Suspension 0 C smelting furnace, back to the production of high-grade nickel matte.
According to figure 2, the suspension smelting furnace 1 and the electric furnace 22 are Interconnected so that in between the suspension smelting furnace 1 and the electric furnace 22 there is Installed aft 1 Partition Ov- wall 23, which prevents the molten high-grade nickel matte 10 produced in the suspension smelting furnace I from flowing into the electric furnace 22, but allows the slag 9 from the suspension smelting furnace to flow as an overflow Into the electric furnace. The partition or wall 23 can be formed of only one piece, In which case the wall 23 Is common for both the suspension smelting furnace 1 and the electric furnace 22, or S'l for instance of two pit-ces, In which case the sections of the wall 23 adjacent to the suspension smelting furnace 1 a'nrd to -4 C T I the electric furnace 22 are separate, and there is formed a connecting duct 24 in between the walls.
Exa mple The method of the invention was applied to a sulphide concentrate, which contained 6.9% by weight nickel, 1.2 %by weight copper, 36.3% by weight iron, 26.5% by weight sulphur and 11.5% by weight silicon oxide. The concentrate was fed into the reaction shaft of a flash smelting furnace, and per o each ton of concentrate there was also fed 82 kg matte from the electric furnace, 230 kg flux, and 98 kg flue dust separated from the exhaust gases from the flash smelting S furnace. In addition to this, there was fed 320 Nm 3 oxidizing gas with an oxygen enrichment degree of 80% into the reaction shaft per each ton of concentrate fed therein.
The product obtained from the settler of the flash smelting furnace was high-grade nickel matte containing 65% by weight o o 0 nickel, 10% by weight copper and 22% by weight sulphur.
4° Moreover, from the settler of the flash smelting furnace t here was obtained slag containing 3% by weight nickel, 0.6% o by weight sulphur and 30% by weight silicon oxide.
The slag from the flash smelting furnace was further conveyed to an electric furnace, where the slag was reduced by means of coke. In the reduction there was formed a slag phase and a metallicized matte phase, which in connection with the removal from the electric furnace was granulated and returned as feed to the flash smelting furnace. On the basis of the slag from the electric furnace, which contained 0.15% by weight nickel and 0.17% by weight copper, it was observed that with the method of the present invention, the obtained recovery rate of the, nickel that was fed in the concentrate was 97.9%.
Claims (9)
1. A method for manufacturing high-grade nickel matte, comprising the steps of: a) feeding a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas into a suspension smelting furnace, b) forming in the suspension smelting furnace a slag and a high-grade nickel matte, c) conducting at least the slag from the suspension smelting furnace into an electric furnace where it is reduced in the presence of a reducing agent so that there is formed electric furnace slag and metaUlicized matte and; e d) returning at least part of the metallicized Smatte from the electric furnace as feed to the suspension Ssmelting furnace.
2. A method as claimed in claim 1, wherein the slag from the suspdnsion smelting furnace and part of the matte from the suspension smelting furnace are fed into the electric furnace. o
3, A method as claimed in any one of the preceding claims, wherein the matte obtained from the electric furnace is granulated following 'emoval from the electric furnace and before being returnea as feed to the suspension smelting furnace.
4. A method as claimed in either one of claims 1 or 2, wherein the matte returned to the suspension smelting furnace is fed to the suspension smelting furnace in a molten state.
Apparatus for use in the manufacturing of high-grade nickel matte, comprising: 4Q a suspension smelting furnace and feed means to the smelting furnace, the feed means feeding a concentrate under treatment together with flux, recirculated flue dust and oxidizing gas to che suspension smelting furnace to form a slag and a high-grade nickel matte; and an electric furnace interconnected to the suspension smelting furnace by first and second interconnection means, the first interconnection means conducting at least the slag from the suspension smelting furnace into the electric furnace where it is reduced in the presence of a reducing agent to form electric furnace o slag and metallicized matte, and the second nterconnection means returning at least part of the metallicized matte from the electric furnace to the suspension smelting furnace as feed.
6. Apparatus as claimed in claim 5, wherein the supension smelting furnace and the electric furnace are 2 physically separated from each other.
7. Apparatus as claimed in claim 5, wherein tne 0 o suspen'i'r smelting furnac and the electric furnace are physically connected by means of a separating member. S8. Apparatus as claimed in claim 7, wherein the first interconnection means is a partition or wall over the top of which at least the slag from the suspension smelting furnace can flow.
I i L U SVA 8
9. Apparatus as claimed in clai 7 wherein the first interconnection means is a connecting duct through which at least the slag from the suspension smelting furnace can flow. DATED THIS 2ND DAY OF MARCH, 1992 OUTOKUMPU OY By Its Patent Attorneys GRIFFITH HACK CO. S°Fellows Institute of Patent Attorneys of Australia 0 0 0 o a A"u. U
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI890395A FI84368B (en) | 1989-01-27 | 1989-01-27 | Process and equipment for producing nickel fine matte |
| FI890395 | 1989-01-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU4860690A AU4860690A (en) | 1990-08-02 |
| AU623969B2 true AU623969B2 (en) | 1992-05-28 |
Family
ID=8527788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU48606/90A Expired AU623969B2 (en) | 1989-01-27 | 1990-01-18 | Method and apparatus for manufacturing high-grade nickel matte |
Country Status (8)
| Country | Link |
|---|---|
| CN (1) | CN1027978C (en) |
| AU (1) | AU623969B2 (en) |
| BR (1) | BR9000366A (en) |
| CA (1) | CA2008167C (en) |
| FI (1) | FI84368B (en) |
| RU (1) | RU2102509C1 (en) |
| UA (1) | UA27218C2 (en) |
| ZA (1) | ZA90500B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU657623B2 (en) * | 1992-06-18 | 1995-03-16 | Outokumpu Harjavalta Metals Oy | Method for producing high-grade matte and metallized sulfide matte |
| AU674107B2 (en) * | 1993-12-10 | 1996-12-05 | Outotec Oyj | Method for producing high-grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materials |
| WO2003093516A1 (en) * | 2002-05-03 | 2003-11-13 | Outokumpu Oyj | Method for refining concentrate containing precious metals |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI98380C (en) * | 1994-02-17 | 1997-06-10 | Outokumpu Eng Contract | Method and apparatus for suspension melting |
| CN1311090C (en) * | 2005-08-23 | 2007-04-18 | 云锡元江镍业有限责任公司 | Bessemer matte production method using nickel sulfide materials |
| AP2010005222A0 (en) | 2007-09-14 | 2010-04-30 | Barrick Gold Corp | Process for recovering platinum group metals usingreductants |
| FI20110279A0 (en) | 2011-08-29 | 2011-08-29 | Outotec Oyj | A method for recovering metals from material containing them |
| CN102605191B (en) | 2012-04-16 | 2013-12-25 | 阳谷祥光铜业有限公司 | Method for directly producing row copper by copper concentrate |
| FI124912B (en) | 2012-04-16 | 2015-03-31 | Outotec Oyj | A method for treating metallurgical slags of non-ferrous metals |
| FI124028B (en) * | 2012-06-13 | 2014-02-14 | Outotec Oyj | Process and arrangement for refining copper concentrate |
| CN104451195B (en) * | 2014-11-21 | 2016-05-18 | 邱江波 | The flash smelting method of lateritic nickel ore |
| CN104880073B (en) * | 2015-06-23 | 2016-11-23 | 邹镇 | An a kind of step meltblown smelting device |
| CN112030006B (en) * | 2020-07-17 | 2022-05-31 | 中国恩菲工程技术有限公司 | Furnace screening method suitable for nickel matte converting reduction furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU475965B2 (en) * | 1972-05-04 | 1976-09-09 | Mitsubishi Kinzoku Kogyo Kabushiki Kaisha | Continuous process for refining sulfide ores |
| AU521924B2 (en) * | 1978-12-06 | 1982-05-06 | Moskovsky Ins Stali | Pyrometallurgical processing of nonferrous materials |
-
1989
- 1989-01-27 FI FI890395A patent/FI84368B/en not_active Application Discontinuation
-
1990
- 1990-01-18 AU AU48606/90A patent/AU623969B2/en not_active Expired
- 1990-01-19 CA CA 2008167 patent/CA2008167C/en not_active Expired - Lifetime
- 1990-01-24 BR BR9000366A patent/BR9000366A/en not_active IP Right Cessation
- 1990-01-24 ZA ZA90500A patent/ZA90500B/en unknown
- 1990-01-25 CN CN90100412A patent/CN1027978C/en not_active Expired - Lifetime
- 1990-01-26 UA UA4743127A patent/UA27218C2/en unknown
- 1990-01-26 RU SU4743127 patent/RU2102509C1/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU475965B2 (en) * | 1972-05-04 | 1976-09-09 | Mitsubishi Kinzoku Kogyo Kabushiki Kaisha | Continuous process for refining sulfide ores |
| AU521924B2 (en) * | 1978-12-06 | 1982-05-06 | Moskovsky Ins Stali | Pyrometallurgical processing of nonferrous materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU657623B2 (en) * | 1992-06-18 | 1995-03-16 | Outokumpu Harjavalta Metals Oy | Method for producing high-grade matte and metallized sulfide matte |
| AU674107B2 (en) * | 1993-12-10 | 1996-12-05 | Outotec Oyj | Method for producing high-grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materials |
| WO2003093516A1 (en) * | 2002-05-03 | 2003-11-13 | Outokumpu Oyj | Method for refining concentrate containing precious metals |
Also Published As
| Publication number | Publication date |
|---|---|
| FI890395A (en) | 1990-07-28 |
| ZA90500B (en) | 1990-10-31 |
| FI84368B (en) | 1991-08-15 |
| FI890395A0 (en) | 1989-01-27 |
| BR9000366A (en) | 1990-12-04 |
| RU2102509C1 (en) | 1998-01-20 |
| CN1027978C (en) | 1995-03-22 |
| CA2008167C (en) | 1996-12-03 |
| CA2008167A1 (en) | 1990-07-27 |
| UA27218C2 (en) | 2000-08-15 |
| AU4860690A (en) | 1990-08-02 |
| CN1044501A (en) | 1990-08-08 |
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