CN101555556B - Method for comprehensively utilizing laterite-type nickel ore - Google Patents
Method for comprehensively utilizing laterite-type nickel ore Download PDFInfo
- Publication number
- CN101555556B CN101555556B CN2009101118230A CN200910111823A CN101555556B CN 101555556 B CN101555556 B CN 101555556B CN 2009101118230 A CN2009101118230 A CN 2009101118230A CN 200910111823 A CN200910111823 A CN 200910111823A CN 101555556 B CN101555556 B CN 101555556B
- Authority
- CN
- China
- Prior art keywords
- ore
- laterite
- nickel ore
- controlled
- type nickel
- 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.)
- Active
Links
Images
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 process for comprehensively utilizing laterite-type nickel ore, which comprises the sequential steps of: conducting dump leaching and depositing to low-grade laterite-type nickel ore on one hand to produce nickel sulfide and cobalt sulfide after selective mining/ore dressing, on the other hand conducting pyro-smelting to high-grade laterite-type nickel ore, and obtainingferronickel after pre-reduction roasting, furnace smelting and refining. The process preferentially combines the technologies of dump leaching and pyro-smelting and is characterized by low comprehens ive production cost, high resource utilization rate, easy operation, less investment, small energy consumption, fast effect and the like.
Description
One. technical field
The present invention relates to a kind of method that fully utilizes laterite-type nickel ore, be suitable for selecting the smelting laterite-type nickel ore to use.
Two. background technology
According to the statistics made by the departments concerned, about 1.6 hundred million tons of the stock number of the existing nickel in the whole world wherein 30～40% originates in the nickelous sulfide mineral deposit, and 60～70% originate in the nickel oxide mineral deposit.Because nickel oxide ore takes on a red color, so be commonly referred to as laterite-type nickel ore.At present; Annual in the world nickel output be raw material production with the nickelous sulfide more than 70%, mainly be because the nickel sulfide ore grade is generally higher, be easy to exploitation utilization; And though the nickeliferous grade of laterite-type nickel ore is low but reserves and deposit scale are huge, shallow in burial, be suitable for the strip mining transformation; Simultaneously laterite-type nickel ore exists ore dressing to be difficult to problems such as enrichment, investment are big, production cost height, because the every raising 0.1% of head grade, cost just can reduce by 3～5%; In case so selecting and smelting technology makes a breakthrough, nickel oxide ore will replace nickel sulfide ore becomes the main raw material of producing nickel.
At present, the treatment process of laterite-type nickel ore mainly contain that pyrometallurgical smelting produces that ferronickel, pyrogenic process matte smelting, big rivers and mountains technology, reduction-ammonia soak, high pressure acidleach, normal pressure acidleach and dump leaching method.Most of enterprises adopt comparatively sophisticated pyrometallurgical smelting to produce the ferronickel method, only can handle high magnesium laterite-type nickel ore and raw material nickel grade general requirement＞1.8%, recyclable ferronickel, but investment is big, production cost is high, and especially energy consumption is big; Pyrogenic process matte smelting method also only can be handled high magnesium laterite-type nickel ore, recyclable cobalt also, but also is that investment is big, production cost is high and technical process is long; Big rivers and mountains technology is the proprietary technology of the big rivers and mountains ferronickel factory of Japan, adopts prereduction-magnetic separation process to produce ferronickel, and its production cost is lower, but complex process equipment, operation easier are high; The recyclable cobalt of reduction-ammonia soaking technology, but technology and complex equipments, the recovery is low; The high pressure acidleach is suitable for handling low magnesium laterite-type nickel ore, and its shortcoming is that investment is big, production cost is high, complex process, operation of equipment and maintenance difficulties are high; The normal pressure acidleach is suitable for handling low magnesium laterite-type nickel ore, and less investment, equipment are simple, but the recovery is low, technology is immature, is representative with one Chinese patent application number 200810031041.1 open " adopting normal pressure acid leaching process processing low-grade red soil nickel ores "; The dump leaching method; Have advantages such as less investment, equipment be simple aspect the processing low-grade laterite-type nickel ore; But the recovery is lower, is representative with Chinese patent publication number CN1311089C disclosed " adopting the method for dump leaching to extract nickel and cobalt in the low-grade red soil nickel ore ".In a word, for the lower laterite-type nickel ore of nickel grade, adopt above-mentioned single method to be difficult to obtain favorable economic benefit and mine resources utilization ratio.
Seek a kind of method that fully utilizes laterite-type nickel ore for this reason and just seem very important.
Three. summary of the invention
The objective of the invention is to overcome the deficiency of existing method, a kind of method that fully utilizes laterite-type nickel ore is provided, i.e. dump leaching-pyrometallurgical smelting is produced the ferronickel combination process, can reduce production costs significantly and more reasonably utilizes mine resources.
For accomplishing this task, the present invention adopts following mode to carry out:
A kind of method that fully utilizes laterite-type nickel ore comprises following process step and condition:
A. divide and adopt/ore dressing, laterite-type nickel ore is adopted through branch or the way of ore dressing is divided into low grade nickel ore and higher-grade nickel minerals;
A-1-1. dump leaching is controlled at 100 orders～2cm with the ore grain size of low grade nickel ore, and-100 orders are built heap after granulating, and water becomes the dilute sulphuric acid of 10%～20% concentration to spray diluting concentrated sulfuric acid, spraying intensity control 10～40L/m
2H, dump leaching obtains leach liquor;
A-1-2. deposition adds sodium sulphite to leach liquor, and the concentration that adds sodium sulphite is 2.5～5 times of nickel ion concentration in the leach liquor 6, carries out precipitin reaction, generates nickelous sulfide and cobaltous sulfide;
A-2. pyrometallurgical smelting, the ore grain size with the higher-grade nickel minerals is controlled at＜30mm earlier, and-100 orders get into rotary kiln behind the drying and granulating; Add reductive agent, the reductive agent consumption is controlled at mass percent 3%～6%, carries out the prereduction roasting; The prereduction maturing temperature is controlled at 850～1050 ℃, and roasting time 0.5～1.5h changes the higher-grade nickel minerals after the prereduction roasting over to electrosmelting again; Add flux 10, the flux consumption is controlled at mass percent 5%～20%, carries out retailoring; Smelting temperature is controlled at 1300～1600 ℃, and smelting time 0.5～1.5h carries out refining at last and obtains ferronickel.
A kind of method that fully utilizes laterite-type nickel ore, its process step and condition further comprise:
A-2. pyrometallurgical smelting, adding reductive agent 9 is coke or coal, the flux 10 of adding is silicon-dioxide or Wingdale.
Can be used as the processing medicament vitriol oil of the present invention, sodium sulphite, coke or coal, silicon-dioxide or Wingdale etc. all is that market is prone to purchase inexpensive production domesticization raw material, need not specific equipment or special facilities.
Advantage of the present invention:
1. owing to make up dump leaching and pyrometallurgical smelting technology according to qualifications, utilize the laterite-type nickel ore of heap leaching method processing low-grade, thereby improve the nickel grade of pyrometallurgical smelting raw materials technology, realize the comprehensive utilization of laterite-type nickel ore resource.
2. comprehensive production cost prior art on year-on-year basis can reduce about 20% at least.
3. increase available stock number about 30%.
4. easy handling, less investment, little, the instant effect of energy consumption.
Four. description of drawings
The concrete grammar of invention is provided by following accompanying drawing.
Fig. 1 is a kind of method process flow sheet that fully utilizes laterite-type nickel ore that proposes according to the present invention.
Fig. 2 is a prior art pyrometallurgical smelting process flow sheet.
Each sign expression in the accompanying drawing:
1. laterite-type nickel ore 2. low grade nickel ore 3. higher-grade nickel minerals, 4. vitriol oil 5. water, 6. leach liquor 7. sodium sulphite, 8. nickelous sulfides and cobaltous sulfide 9. reductive agents 10. flux 11. ferronickels
Below in conjunction with accompanying drawing the present invention is done to describe in detail further.
Five. embodiment
Utilize ore dressing, screening or branch method such as to adopt to the laterite-type nickel ore in same mining area; Be divided into low-grade the laterite-type nickel ore in this mining area and higher-grade two portions; Utilize the laterite-type nickel ore of heap leaching method processing low-grade; Produce nickelous sulfide and cobaltous sulfide, high-grade laterite-type nickel ore adopts pyrometallurgical smelting explained hereafter ferronickel.Described low-grade district nickel grade is about 1.0%, and higher-grade district nickel grade is about 2.0%.
As shown in Figure 1, a kind of method that fully utilizes laterite-type nickel ore comprises following process step and condition:
A. divide and adopt/ore dressing, laterite-type nickel ore 1 is adopted through branch or the way of ore dressing is divided into low grade nickel ore 2 and higher-grade nickel minerals 3;
A-1-1. dump leaching is controlled at 100 orders～2cm with the ore grain size of low grade nickel ore 2, and-100 orders are built heap after granulating, and water 5 sprays the dilute sulphuric acid that the vitriol oil 4 is diluted to 10%～20% concentration, spraying intensity control 10～40L/m
2H, dump leaching obtains leach liquor 6;
A-1-2. deposition adds sodium sulphite 7 to leach liquor 6, and the concentration that adds sodium sulphite is 2.5～5 times of nickel ion concentration in the leach liquor 6, carries out precipitin reaction, generates nickelous sulfide and cobaltous sulfide 8;
A-2. pyrometallurgical smelting, with reference to Fig. 2, the ore grain size with higher-grade nickel minerals 3 is controlled at＜30mm-100 orders earlier; Get into rotary kiln behind the drying and granulating, add reductive agent 9, reductive agent 9 consumptions are controlled at mass percent 3%～6%, carry out the prereduction roasting; The prereduction maturing temperature is controlled at 850～1050 ℃, and roasting time 0.5～1.5h changes the higher-grade nickel minerals 3 after the prereduction roasting over to electrosmelting again; Add flux 10, the flux consumption is controlled at mass percent 5%～20%, carries out retailoring; Smelting temperature is controlled at 1300～1600 ℃, and smelting time 0.5～1.5h carries out refining at last and obtains ferronickel 11.
A kind of method that fully utilizes laterite-type nickel ore, its process step and condition further comprise:
A-2. pyrometallurgical smelting, adding reductive agent 9 is coke or coal, the flux 10 of adding is silicon-dioxide or Wingdale.
For certain average nickel grade is 1.5% laterite-type nickel ore, adopts method of the present invention respectively and adopts single pyrometallurgical smelting to compare test related process parameter and effect is seen table 1.
Table 1 embodiments of the invention and single pyrometallurgical smelting Comparative Examples
Visible from table 1; The production cost of nickel calculates according to China's price in 2008; Using three embodiment average production costs of the inventive method is 13.13 ten thousand yuan/tNi, and available stock number is big, with the single pyrometallurgical smelting of prior art; Production cost is 14.50 ten thousand yuan/tNi, and available stock number is little.
Claims (3)
1. method that fully utilizes laterite-type nickel ore comprises following processing steps in sequence and condition:
A. divide and adopt/ore dressing, laterite-type nickel ore (1) is adopted through branch or the way of ore dressing is divided into low grade nickel ore (2) and higher-grade nickel minerals (3);
A-1-1. dump leaching is controlled at 100 orders～2cm with the ore grain size of low grade nickel ore (2), and-100 orders are built heap after granulating, and water (5) sprays the dilute sulphuric acid that the vitriol oil (4) is diluted to 10%～20% concentration, and spraying intensity is controlled at 10～40Lm
2H, dump leaching obtains leach liquor (6);
A-1-2. deposition adds sodium sulphite (7) to leach liquor (6), and the concentration that adds sodium sulphite is 2.5～5 times of the middle nickel ion concentration of leach liquor (6), carries out precipitin reaction, generates nickelous sulfide and cobaltous sulfide (8);
A-2. pyrometallurgical smelting, the ore grain size with higher-grade nickel minerals (3) is controlled at＜30mm earlier, gets into rotary kiln behind the drying and granulating; Add reductive agent (9), reductive agent (9) consumption is controlled at mass percent 3%～6%, carries out the prereduction roasting; The prereduction maturing temperature is controlled at 850～1050 ℃, and roasting time 0.5～1.5h changes the higher-grade nickel minerals (3) after the reducing roasting over to electric furnace again; Add flux (10), the flux consumption is controlled at mass percent 5%～20%, carries out retailoring; Smelting temperature is controlled at 1300～1600 ℃, and smelting time 0.5～1.5h carries out refining at last and obtains ferronickel (11).
2. a kind of method that fully utilizes laterite-type nickel ore according to claim 1, its process step and condition further comprise:
A-2. pyrometallurgical smelting, adding reductive agent (9) is coke or coal.
3. a kind of method that fully utilizes laterite-type nickel ore according to claim 1, its process step and condition further comprise:
A-2. pyrometallurgical smelting, the flux of adding (10) is silicon-dioxide or Wingdale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101118230A CN101555556B (en) | 2009-05-14 | 2009-05-14 | Method for comprehensively utilizing laterite-type nickel ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101118230A CN101555556B (en) | 2009-05-14 | 2009-05-14 | Method for comprehensively utilizing laterite-type nickel ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101555556A CN101555556A (en) | 2009-10-14 |
| CN101555556B true CN101555556B (en) | 2012-07-25 |
Family
ID=41173833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101118230A Active CN101555556B (en) | 2009-05-14 | 2009-05-14 | Method for comprehensively utilizing laterite-type nickel ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101555556B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343240A (en) * | 2013-07-05 | 2013-10-09 | 昆明理工大学 | Method for evaluating drying and pre-reducing process of laterite-nickel ore |
| CN104694972A (en) * | 2015-02-06 | 2015-06-10 | 铜陵百荣新型材料铸件有限公司 | Method for preparing ferro-nickle alloy from laterite nickel ore |
| JP6897466B2 (en) * | 2017-09-29 | 2021-06-30 | 住友金属鉱山株式会社 | How to separate copper from nickel and cobalt |
| JP6915497B2 (en) | 2017-10-23 | 2021-08-04 | 住友金属鉱山株式会社 | How to separate copper from nickel and cobalt |
| JP6939506B2 (en) | 2017-12-18 | 2021-09-22 | 住友金属鉱山株式会社 | How to separate copper from nickel and cobalt |
| CN112080636B (en) | 2020-08-17 | 2022-11-15 | 广东邦普循环科技有限公司 | Method for producing battery-grade nickel sulfate salt by using laterite-nickel ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4435369A (en) * | 1981-06-22 | 1984-03-06 | Simpson Charles H | Hydrometallurgical process for extraction of nickel |
| CN1718787A (en) * | 2005-07-15 | 2006-01-11 | 曹国华 | Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore |
| CN101020958A (en) * | 2006-12-22 | 2007-08-22 | 昆明贵金属研究所 | Combined bottom rotating furnace-electric furnace process for treating red mud nickel ore to produce ferronickel |
| CN101033515A (en) * | 2007-04-16 | 2007-09-12 | 中南大学 | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore |
-
2009
- 2009-05-14 CN CN2009101118230A patent/CN101555556B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4435369A (en) * | 1981-06-22 | 1984-03-06 | Simpson Charles H | Hydrometallurgical process for extraction of nickel |
| CN1718787A (en) * | 2005-07-15 | 2006-01-11 | 曹国华 | Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore |
| CN101020958A (en) * | 2006-12-22 | 2007-08-22 | 昆明贵金属研究所 | Combined bottom rotating furnace-electric furnace process for treating red mud nickel ore to produce ferronickel |
| CN101033515A (en) * | 2007-04-16 | 2007-09-12 | 中南大学 | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2007-162134A 2007.06.28 |
| 王成彦等.国内外红土镍矿处理技术及进展.《中国有色金属学报》.2008,第18卷S1-S8. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101555556A (en) | 2009-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dalvi et al. | The past and the future of nickel laterites | |
| CN101555556B (en) | Method for comprehensively utilizing laterite-type nickel ore | |
| CN100469912C (en) | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore | |
| CN103290205B (en) | A process of separating iron and titanium in seaside titanomagnetite via direct reduction roasting by using coal | |
| CN100395354C (en) | Comprehensive recovering process of multimetal sulfide mineral | |
| CN102345019B (en) | Method for treating brown iron type laterite-nickel ore | |
| CN101338377A (en) | High-efficiency leaching process of nickel from laterite-nickel ore | |
| CN103572050B (en) | A kind of biological selectivity leaching method of low-grade copper cobalt ore | |
| CN102345018B (en) | Method for treating nickel oxide ore | |
| CN104785357B (en) | The method that valuable metal is extracted from seabed multi-metal sulfide coupling grandidierite | |
| CN103555968A (en) | Novel smelting process of cobalt-manganese multi-metal ore | |
| CN101323909A (en) | Method of microwave selective reduction roasting-dilute acid leaching nickel oxide ore | |
| CN103301929A (en) | Selective zinc oxide leaching and weak acidic zinc sulfide flotation smelting and selection combining process | |
| CN103509955B (en) | The technique of two ore deposit integrated process process red soil nickel ores and pyrolusite | |
| CN101418359A (en) | Method for extracting iron and high grade ferro-nickel alloy from laterite nickle mine | |
| CN105907949A (en) | Novel process for comprehensively recovering nickel, cobalt and iron from laterite-nickel ore through low-temperature acidification and acidolysis | |
| CN103509936A (en) | Gas base selective reduction method for preparing high-grade nickel ore concentrate from laterite nickel ores | |
| CN101792865B (en) | Method for drying and prereducing laterite-nickel ores | |
| CN112111644A (en) | Method for efficiently recovering gold and silver | |
| CN101368235B (en) | Pyrogenic pretreatment method for low-grade laterite nickel mine | |
| CN102851490A (en) | Method for preparing high-quality calcine by fluidized reduction roasting of nickel oxide ore | |
| CN102888520A (en) | Method for efficiently extracting nickel, cobalt, copper and platinum group metals from complex nickel-copper concentrate | |
| CN101530826B (en) | Method for combined treatment of high calcium and magnesium low-grade oxidized lead zinc ore by means of concentration | |
| CN109957649A (en) | A kind of method that complexity iron concentrate prepares high-quality iron ore concentrate and cooperates with recycling copper zinc | |
| CN110029231B (en) | Bacterial leaching method of complex copper oxide ore containing multiple copper minerals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170830 Address after: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Industrial Zone Fang Mountain Road No. 3 Patentee after: Xiamen Zijin Mining Technology Co., Ltd. Address before: 364200 Zijin building, No. 1 Zijin Road, Shanghang County, Fujian Province Patentee before: Zijin Mining-Industry Group Corp. |
|
| TR01 | Transfer of patent right |