CA2008167C - Method and apparatus for manufacturing high-grade nickel matte - Google Patents
Method and apparatus for manufacturing high-grade nickel matteInfo
- Publication number
- CA2008167C CA2008167C CA 2008167 CA2008167A CA2008167C CA 2008167 C CA2008167 C CA 2008167C CA 2008167 CA2008167 CA 2008167 CA 2008167 A CA2008167 A CA 2008167A CA 2008167 C CA2008167 C CA 2008167C
- Authority
- CA
- Canada
- Prior art keywords
- suspension smelting
- furnace
- smelting furnace
- matte
- electric furnace
- 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 - Lifetime
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000003723 Smelting Methods 0.000 claims abstract description 55
- 239000000725 suspension Substances 0.000 claims abstract description 46
- 239000002893 slag Substances 0.000 claims abstract description 24
- 239000012141 concentrate Substances 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims abstract description 7
- 239000003500 flue dust Substances 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims abstract description 5
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 4
- 239000012768 molten material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 14
- 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
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 239000001117 sulphuric acid Substances 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 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
- 101100126167 Escherichia coli (strain K12) intD gene Proteins 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004140 cleaning 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
- 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)
Abstract
The invention relates to a method and apparatus for manufacturing high-grade nickel matte. In the method of the invention comprises, a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas is fed into a suspension smelting furnace. In the suspension smelting furnace there is formed slag and high-grade nickel matte. At least the slag from the suspension furnace is conducted into an electric furnace where it is reduced, in the presence of a reducing agent so that the electric furnace slag and metallicized matte are formed and at least part of the metallicized matte from the electric furnace is returned as feed to the suspension smelting furnace. The apparatus for carrying out the method of the invention comprises a suspension smelting furnace and an electric furnace.
Description
200816~
The present invention relates to a method and apparatus for manufacturing high-grade nickel matte in a combination of suspension smelting furnace and electric furnace .
Conventionally high-grade nickel matte i8 manufactured from sulphidic concentrates as follows: first the concentrate is dried and smelted in a suspension smelting furnace to form nickel matte. The nickel matte thus obtained i6 further converted to high-grade nickel matte, where the c~ ' in~d 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, from which the obtained matte is le~uLlle-l 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 conventional method for manufacturing high-grade nickel matte is reliable and has been tried and found adequate, but it also has some drawbacks. Such drawbacks are for instance its high investment costs. Iqoreover, the process forms two different gas flows, of which one (the converter gas flow based on the blasting technique) is highly variable in quantity, which makes the gas treatment and sulphuric acid production expensive. The use of the converter also leads to problems with smoke in the working areas, because the converter hood must be shi~ted at different stages of the converting process. Furthermore, the process requires shifting of the molten material from the suspension smelting furnace into the converter, and from the converter to the electric furnace as well as from the electric furnace to the converter. For the above described reasons, the process results in a large amount of intD ~ te *
;.
, . , , . ....... ,,, , _ _ _ _ _ 2 ~0~8~67 products, which again cause expenses in their treatment, smelting and cleaning.
An obj ect of the present invention is to eliminate some of the drawbacks of the prior art and to provide a better and simpler method for manufacturing high-grade nickel matte, as well as an apparatus suited for the method .
Accordingly, one aspect of the invention provides a method for manufacturing high-grade nickel matte, which comprise6: a) feeding a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas into a suspension smelting furnace, b) forming a slag and high-grade nickel matte in the suspension smelting furnace, 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 as to form electric furnace slag and metallicized matte, and d) returning at least part of the metallicized matte from the electric furnace as feed to the suspension smelting furnace.
A further aspect of the invention provides an apparatus for carrying out the method, which comprises a suspension smelting furnace for smelting the material and an electric furnace for treating the molten material.
In the manufacturing method of high-grade nickel matte according to the present invention, there is produced high-grade nickel matte in a suspension smelting furnace, such as a flash smelting furnace. As a result of the high nickel content of the 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 the suspension smelting furnace is reduced in an electric furnace, which is either separate or connected to the suspension smelting furnace by a special separating member. If desired, at least part of the high-grade nickel matte can also be fed into the electric furnace. The matte . .
_ _ _ _ _ _ , . . .. .. . .. .
The present invention relates to a method and apparatus for manufacturing high-grade nickel matte in a combination of suspension smelting furnace and electric furnace .
Conventionally high-grade nickel matte i8 manufactured from sulphidic concentrates as follows: first the concentrate is dried and smelted in a suspension smelting furnace to form nickel matte. The nickel matte thus obtained i6 further converted to high-grade nickel matte, where the c~ ' in~d 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, from which the obtained matte is le~uLlle-l 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 conventional method for manufacturing high-grade nickel matte is reliable and has been tried and found adequate, but it also has some drawbacks. Such drawbacks are for instance its high investment costs. Iqoreover, the process forms two different gas flows, of which one (the converter gas flow based on the blasting technique) is highly variable in quantity, which makes the gas treatment and sulphuric acid production expensive. The use of the converter also leads to problems with smoke in the working areas, because the converter hood must be shi~ted at different stages of the converting process. Furthermore, the process requires shifting of the molten material from the suspension smelting furnace into the converter, and from the converter to the electric furnace as well as from the electric furnace to the converter. For the above described reasons, the process results in a large amount of intD ~ te *
;.
, . , , . ....... ,,, , _ _ _ _ _ 2 ~0~8~67 products, which again cause expenses in their treatment, smelting and cleaning.
An obj ect of the present invention is to eliminate some of the drawbacks of the prior art and to provide a better and simpler method for manufacturing high-grade nickel matte, as well as an apparatus suited for the method .
Accordingly, one aspect of the invention provides a method for manufacturing high-grade nickel matte, which comprise6: a) feeding a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas into a suspension smelting furnace, b) forming a slag and high-grade nickel matte in the suspension smelting furnace, 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 as to form electric furnace slag and metallicized matte, and d) returning at least part of the metallicized matte from the electric furnace as feed to the suspension smelting furnace.
A further aspect of the invention provides an apparatus for carrying out the method, which comprises a suspension smelting furnace for smelting the material and an electric furnace for treating the molten material.
In the manufacturing method of high-grade nickel matte according to the present invention, there is produced high-grade nickel matte in a suspension smelting furnace, such as a flash smelting furnace. As a result of the high nickel content of the 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 the suspension smelting furnace is reduced in an electric furnace, which is either separate or connected to the suspension smelting furnace by a special separating member. If desired, at least part of the high-grade nickel matte can also be fed into the electric furnace. The matte . .
_ _ _ _ _ _ , . . .. .. . .. .
3 2~81B7 created in the electric furnace is at least partly recirculated back to the suspension smelting furnace. The recirculated matte, which is fed into the suspension smelting furnace either as a granulated product or molten, further reduces the slag from the suspension smelting furnace, and simultAneollqly ~limin;~h~ the amount of the recirculated material. Thus, the method and apparatus of the present invention for manufacturing high-grade nickel matte make it possible to eliminate the use of the converter as one process stage.
Conc~ ntly, the method for manufacturing high-grade nickel matte of the present invention leads to remarkable advantages 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 smoke problems in the working area are essentially reduced. Accordingly, there are essentially no into ~ te products ~ormed in connection with the manufacture of high-grade nickel matte. Furth,~ e, according to the invention there is created only one essentially even gas flow, which lowers the cost of sulphuric acid production and of gas treatment.
While applying the method and apparatus for manufacturing high-grade nickel matte of the present invention in a new production unit, the space 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 investment costs, as compared to the prior art equipment. Accordingly, the demand for labour is reduced owing to the manufacturing method of high-grade nickel matte of the present invention.
The manufacture of high-grade nickel matte according to the present invention can also be applied to an existing production unit, because the technology used in , ~
,:
_ .. , , . , . , ,, , . .. _, ... . ... . ..
Conc~ ntly, the method for manufacturing high-grade nickel matte of the present invention leads to remarkable advantages 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 smoke problems in the working area are essentially reduced. Accordingly, there are essentially no into ~ te products ~ormed in connection with the manufacture of high-grade nickel matte. Furth,~ e, according to the invention there is created only one essentially even gas flow, which lowers the cost of sulphuric acid production and of gas treatment.
While applying the method and apparatus for manufacturing high-grade nickel matte of the present invention in a new production unit, the space 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 investment costs, as compared to the prior art equipment. Accordingly, the demand for labour is reduced owing to the manufacturing method of high-grade nickel matte of the present invention.
The manufacture 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 i6 known as such. However, 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 high-grade nickel matte production are 5 essentially different from those of the prior art.
r ~ ?nts of the invention will be described in more detail below, with reference to the appended drawings, in which:
Figure 1 is an illustration of a preferred 10 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 .
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 obtained from the cooling 21 of exhaust gases. The gases created in the suspension smelting furnace 1 are removed through uptake shaft 8 to gas treatment in a gas cooling system 21. Slag 9 from the suspension smelting furnace 1 and produced high-grade nickel matte 10 are removed from settler 11 respectively through discharge hatches 19 and 20.
The slag 9 from the suspension smelting furnace is further conveyed to an electric furnace 12, where the 61ag 9 is reduced by means of coke 13 used as the reducing agent. As a result of 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 granulation 18 after removal from the furnace. The granulated matte 6 is returned as feed to the suspension smelting furnace, for the production of further high-grade nickel matte.
4_: .
According to Figure 2, the suspension smelting furnace 1 and an electric furnace 22 are interconnected so that in between the suspension smelting furnace 1 and the electric furnace 22 there is installed a partition wall 23, which prevents the molten high-grade nickel matte 10 produced in the suspension smelting furnace 1 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 wall 23 can be formed of one piece, in which case the wall 23 is common for both the suspension smelting furnace 1 and the electric furnace 22, or alternatively of two pieces, in which case the sections of the wall 23 adjacent the suspension smelting furnace 1 and the electric furnace 22 are separate, and there is formed a connecting duct 24 in between the walls.
The following Example illustrates the invention.
Exam~le The method of the invention was applied to a sulphide concentrate, which contained 6.9~6 by weight nickel, 1.2% by weight copper, 36.3% by weight iron, 26.5%
by weigh sulphur and 11. 5% by weight silicon oxide. The concentrate was fed into the reaction shaft of a flash smelting furnace, and for each ton of concentrate there is also fed 82 kg of matte from an electric furnace, 230 kg of flux, and 98 kg of flue dust separated from the exhaust gases from the flash smelting furnace. In addition to this, there was fed 320 Nm of oxidizing gas with an oxygen enrichment degree of 80% into the reaction shaft per 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 of nickel, 10% by weight of copper and 22% by weight of sulphur. Moreover, from the settler of the flash smelting furnace there was obtained slag containing 3% by weigh of nickel, 0.6% by weight of sulphur and 30% by weight of silicon oxide.
~ .
200816~
The slag from the flash smelting furnace was further cu..v~yed 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 5 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 0.1596 by weight nickel and 0.17%
by weight copper, it was observed that, with the method of 10 the present invention, the obtained recovery rate of the nickel that was fed in the concentrate was 97 . 996 .
r ~ ?nts of the invention will be described in more detail below, with reference to the appended drawings, in which:
Figure 1 is an illustration of a preferred 10 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 .
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 obtained from the cooling 21 of exhaust gases. The gases created in the suspension smelting furnace 1 are removed through uptake shaft 8 to gas treatment in a gas cooling system 21. Slag 9 from the suspension smelting furnace 1 and produced high-grade nickel matte 10 are removed from settler 11 respectively through discharge hatches 19 and 20.
The slag 9 from the suspension smelting furnace is further conveyed to an electric furnace 12, where the 61ag 9 is reduced by means of coke 13 used as the reducing agent. As a result of 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 granulation 18 after removal from the furnace. The granulated matte 6 is returned as feed to the suspension smelting furnace, for the production of further high-grade nickel matte.
4_: .
According to Figure 2, the suspension smelting furnace 1 and an electric furnace 22 are interconnected so that in between the suspension smelting furnace 1 and the electric furnace 22 there is installed a partition wall 23, which prevents the molten high-grade nickel matte 10 produced in the suspension smelting furnace 1 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 wall 23 can be formed of one piece, in which case the wall 23 is common for both the suspension smelting furnace 1 and the electric furnace 22, or alternatively of two pieces, in which case the sections of the wall 23 adjacent the suspension smelting furnace 1 and the electric furnace 22 are separate, and there is formed a connecting duct 24 in between the walls.
The following Example illustrates the invention.
Exam~le The method of the invention was applied to a sulphide concentrate, which contained 6.9~6 by weight nickel, 1.2% by weight copper, 36.3% by weight iron, 26.5%
by weigh sulphur and 11. 5% by weight silicon oxide. The concentrate was fed into the reaction shaft of a flash smelting furnace, and for each ton of concentrate there is also fed 82 kg of matte from an electric furnace, 230 kg of flux, and 98 kg of flue dust separated from the exhaust gases from the flash smelting furnace. In addition to this, there was fed 320 Nm of oxidizing gas with an oxygen enrichment degree of 80% into the reaction shaft per 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 of nickel, 10% by weight of copper and 22% by weight of sulphur. Moreover, from the settler of the flash smelting furnace there was obtained slag containing 3% by weigh of nickel, 0.6% by weight of sulphur and 30% by weight of silicon oxide.
~ .
200816~
The slag from the flash smelting furnace was further cu..v~yed 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 5 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 0.1596 by weight nickel and 0.17%
by weight copper, it was observed that, with the method of 10 the present invention, the obtained recovery rate of the nickel that was fed in the concentrate was 97 . 996 .
Claims (10)
1. A method for manufacturing high-grade nickel matte, which comprises:
a) feeding a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas into a suspension smelting furnace, b) forming a slag and high-grade nickel matte in the suspension smelting furnace, 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 as to form electric furnace slag and metallicized matte, and d) returning at least part of the metallicized matte from the electric furnace as feed to the suspension smelting furnace.
a) feeding a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas into a suspension smelting furnace, b) forming a slag and high-grade nickel matte in the suspension smelting furnace, 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 as to form electric furnace slag and metallicized matte, and d) returning at least part of the metallicized matte from the electric furnace as feed to the suspension smelting furnace.
2. A method according to claim 1, wherein the slag from the suspension smelting furnace is fed into the electric furnace.
3. A method according to claim 1, wherein the slag from the suspension smelting furnace and part of the matte from the suspension smelting furnace are fed into the electric furnace.
4. A method according to claim 1, 2 or 3, wherein the matte obtained from the electric furnace is granulated on removal from the electric furnace.
5. A method according to claim 1, 2 or 3, wherein the matte returned to the suspension smelting furnace is fed to the suspension smelting furnace in a molten state.
6. An apparatus for carrying out the method of claim 1, wherein the apparatus comprises a suspension smelting furnace for smelting the material and an electric furnace for treating the molten material.
7. An apparatus according to claim 6, wherein the suspension smelting furnace and the electric furnace are separated from each other.
8. An apparatus according to claim 6, wherein a separating member is disposed between the suspension smelting furnace and the electric furnace.
9. An apparatus according to claim 8, wherein the separating member is a partition wall.
10. An apparatus according to claim 8, wherein the separating member is a connecting duct.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI890395 | 1989-01-27 | ||
| FI890395A FI84368B (en) | 1989-01-27 | 1989-01-27 | Process and equipment for producing nickel fine matte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2008167A1 CA2008167A1 (en) | 1990-07-27 |
| CA2008167C true CA2008167C (en) | 1996-12-03 |
Family
ID=8527788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2008167 Expired - Lifetime CA2008167C (en) | 1989-01-27 | 1990-01-19 | 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4320319C2 (en) * | 1992-06-18 | 2003-11-20 | Outokumpu Harjavalta Metals Oy | Process for the production of a highly enriched nickel stone and metallized sulfide stone |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI97396C (en) * | 1993-12-10 | 1996-12-10 | Outokumpu Eng Contract | Method for the production of nickel fine stone from nickel-containing raw materials at least partially pyrometallurgically processed |
| FI98380C (en) * | 1994-02-17 | 1997-06-10 | Outokumpu Eng Contract | Method and apparatus for suspension melting |
| FI114808B (en) * | 2002-05-03 | 2004-12-31 | Outokumpu Oy | Process for the processing of precious metal |
| 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 |
| US8016912B2 (en) | 2007-09-14 | 2011-09-13 | Barrick Gold Corporation | Process for recovering platinum group metals using reductants |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5143015B2 (en) * | 1972-05-04 | 1976-11-19 | ||
| 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
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4320319C2 (en) * | 1992-06-18 | 2003-11-20 | Outokumpu Harjavalta Metals Oy | Process for the production of a highly enriched nickel stone and metallized sulfide stone |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4860690A (en) | 1990-08-02 |
| FI890395A0 (en) | 1989-01-27 |
| BR9000366A (en) | 1990-12-04 |
| CA2008167A1 (en) | 1990-07-27 |
| FI84368B (en) | 1991-08-15 |
| FI890395A (en) | 1990-07-28 |
| CN1027978C (en) | 1995-03-22 |
| CN1044501A (en) | 1990-08-08 |
| AU623969B2 (en) | 1992-05-28 |
| RU2102509C1 (en) | 1998-01-20 |
| UA27218C2 (en) | 2000-08-15 |
| ZA90500B (en) | 1990-10-31 |
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