CN102758093A - Smelting method for nickel oxide ore - Google Patents
Smelting method for nickel oxide ore Download PDFInfo
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- CN102758093A CN102758093A CN2012102232574A CN201210223257A CN102758093A CN 102758093 A CN102758093 A CN 102758093A CN 2012102232574 A CN2012102232574 A CN 2012102232574A CN 201210223257 A CN201210223257 A CN 201210223257A CN 102758093 A CN102758093 A CN 102758093A
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Abstract
The invention relates to a smelting method for nickel oxide ore, comprising the following steps of: 1) evenly mixing nickel-containing oxidized ore and a drying agent according to the mass ratio of 100: (6-8); 2) firstly crushing the dried nickel-containing oxidized ore, and crushing into grains having the grain sizes which are less than 10cm; 3) secondarily crushing the grains obtained by the step 2), carrying out vibrating screen, and directly charging the screened grains which are less than 5mm into the next workshop section; 4) evenly mixing the nickel-containing oxidized ore obtained by the step 3) and the pulverized coal according to the mass ratio of 100: (8-12), and adding water to form into pellets in the process of mixing; 5) evenly mixing the pellets obtained by the step 4) and pea coal or coke powder according to the mass ratio of 100: 30, and putting into a rotary kiln for reducing under high temperature; and 6) carrying out the metal-slag separation on the calcined ore discharged out of the rotary kiln by a melting and separating furnace. The smelting method has the beneficial effects of being short in technological process, low in energy consumption, and high in metal recovery rate.
Description
Technical field
The present invention relates to a kind of nickel oxide ore melting method.
Background technology
In the production process of metallic nickel, be to be main mostly with sulfide.Along with going deep into of resources development and utilization, the raw material of other kinds also begins to get into research, and the development and use of some nickel oxide ore materials begin to get into conceptual phase.At present, to the treatment process of nickel oxide ore, the pressure ammonia leaching that mainly contains of report is arranged.Methods such as pressurized acid leaching, and these methods are when actual production, it is long that ubiquity technical process; Problems such as production cost is high, and ambrose alloy cobalt metal recovery rate is low, and these technologies are when producing; The a series of intermediate materials that produce are not all handled preferably, can't recycling.
Summary of the invention
The purpose of this invention is to provide a kind of nickel oxide ore melting method, to overcome deficiencies such as the technical process that at present existing nickel oxide ore melting method exists is long, production cost is high, metal recovery rate is low.
The objective of the invention is to realize through following technical scheme:
A kind of nickel oxide ore melting method may further comprise the steps:
The quality that step 1) is pressed 100:6 ~ 8 with nickeliferous oxidized ore and siccative is reduced to below 25% (mass percent) the natural moisture in the nickeliferous oxidized ore than uniform mixing;
Step 2) dried nickeliferous oxidized ore is carried out primary fragmentation with jaw crusher, being broken into particle diameter is the particle below the 10cm;
Step 3) through crusher to step 2) particle that obtains carries out secondary breaking; Being broken into particle diameter is the particle below the 20mm; And carried out vibratory screening apparatus; Filter out particle diameter and directly get into next workshop section less than the particle of 5mm, wherein particle diameter carries out tertiary crushing greater than the particle of 5mm through crusher, is broken into the particle of particle diameter less than 5mm;
Nickeliferous oxidized ore particle that step 4) obtains step 3) and coal dust, add water and make it become pelletizing than uniform mixing by the quality of 100:8 ~ 12 during mixing, as coal blending in once;
The pelletizing that step 5) obtains step 4) and beans or coke powder compare uniform mixing by the quality of 100:30; And put into through feeding device and to carry out high temperature reduction in the rotary kiln; The material that burns is through the hot metal Restore All, and degree of metalization reaches more than 99%, and the temperature of rotary kiln end is 1300 ℃; Rotary kiln end adopts the burner coal powder injection that thermal source is provided one time, and secondary high-pressure wind replenishes and the ring formation adjustment as air quantity; And
Step 6) is carried out separating of metal and slag through the molten roasted ore that divides stove from rotary kiln, to come out; The metal that is reduced fully generates the multi-element metal nickel shot through shrend; Slag then gets into the slag making pond and generates the piece slag, uses as material of construction, and wherein slag adds properties-correcting agent 2 ~ 3% (mass percent) after getting into the slag making pond; Generate the piece slag, use as material of construction.
Beneficial effect of the present invention is: flow process is short, energy consumption is low, and metal recovery rate is high; Carry out agglomeration with generally smelting the slag that generates, be more suitable for as the building materials used; Reduce simultaneously and take up an area of the space.
Embodiment
Embodiment 1
The embodiment of the invention 1 described a kind of nickel oxide ore melting method may further comprise the steps:
Step 1) will contain 100kg nickel oxidized ore and 6kg siccative uniform mixing, and the natural moisture in the nickeliferous oxidized ore is reduced to below 25% (mass percent);
Step 2) dried nickeliferous oxidized ore is carried out primary fragmentation with jaw crusher, being broken into particle diameter is the particle below the 10cm;
Step 3) through crusher to step 2) particle that obtains carries out secondary breaking; Being broken into particle diameter is the particle below the 20mm; And carried out vibratory screening apparatus; Filter out particle diameter and directly get into next workshop section less than the particle of 5mm, wherein particle diameter carries out tertiary crushing greater than the particle of 5mm through crusher, is broken into the particle of particle diameter less than 5mm;
The nickeliferous oxidized ore particle that step 4) obtains step 3) and coal dust, add water and make it become pelletizing than uniform mixing by the quality of 100:8 during mixing, as coal blending in once;
The pelletizing that step 5) obtains step 4) and beans or coke powder compare uniform mixing by the quality of 100:30; And put into through feeding device and to carry out high temperature reduction in the rotary kiln; The material of roasting is through the hot metal Restore All, and degree of metalization reaches more than 99%, and the temperature of rotary kiln end is 1300 ℃; Rotary kiln end adopts the burner coal powder injection that thermal source is provided one time, and secondary high-pressure wind replenishes and the ring formation adjustment as air quantity; And
Step 6) is carried out separating of metal and slag through the molten roasted ore that divides stove from rotary kiln, to come out; The metal that is reduced fully generates the multi-element metal nickel shot through shrend; Slag then gets into the slag making pond and generates the piece slag, uses as material of construction, and wherein slag adds properties-correcting agent 2 ~ 3% after getting into the slag making pond; Generate the piece slag, use as material of construction.
Embodiment 2
The embodiment of the invention 2 described a kind of nickel oxide ore melting method may further comprise the steps:
Step 1) will contain 100kg nickel oxidized ore and 7kg siccative uniform mixing, and the natural moisture in the nickeliferous oxidized ore is reduced to below 25%;
Step 2) dried nickeliferous oxidized ore is carried out primary fragmentation with jaw crusher, being broken into particle diameter is the particle below the 10cm;
Step 3) through crusher to step 2) particle that obtains carries out secondary breaking; Being broken into particle diameter is the particle below the 20mm; And carried out vibratory screening apparatus; Filter out particle diameter and directly get into next workshop section less than the particle of 5mm, wherein particle diameter carries out tertiary crushing greater than the particle of 5mm through crusher, is broken into the particle of particle diameter less than 5mm;
The nickeliferous oxidized ore particle that step 4) obtains step 3) and coal dust, add water and make it become pelletizing than uniform mixing by the quality of 100:10 during mixing, as coal blending in once;
The pelletizing that step 5) obtains step 4) and beans or coke powder compare uniform mixing by the quality of 100:30; And put into through feeding device and to carry out high temperature reduction in the rotary kiln; The material of roasting is through the hot metal Restore All, and degree of metalization reaches more than 99%, and the temperature of rotary kiln end is 1300 ℃; Rotary kiln end adopts the burner coal powder injection that thermal source is provided one time, and secondary high-pressure wind replenishes and the ring formation adjustment as air quantity; And
Step 6) is carried out separating of metal and slag through the molten roasted ore that divides stove from rotary kiln, to come out; The metal that is reduced fully generates the multi-element metal nickel shot through shrend; Slag then gets into the slag making pond and generates the piece slag, uses as material of construction, and wherein slag adds properties-correcting agent 2 ~ 3% after getting into the slag making pond; Generate the piece slag, use as material of construction.
Embodiment 3
The embodiment of the invention 3 described a kind of nickel oxide ore melting method may further comprise the steps:
Step 1) will contain 100kg nickel oxidized ore and 8kg siccative uniform mixing, and the natural moisture in the nickeliferous oxidized ore is reduced to below 25%;
Step 2) dried nickeliferous oxidized ore is carried out primary fragmentation with jaw crusher, being broken into particle diameter is the particle below the 10cm;
Step 3) through crusher to step 2) particle that obtains carries out secondary breaking; Being broken into particle diameter is the particle below the 20mm; And carried out vibratory screening apparatus; Filter out particle diameter and directly get into next workshop section less than the particle of 5mm, wherein particle diameter carries out tertiary crushing greater than the particle of 5mm through crusher, is broken into the particle of particle diameter less than 5mm;
The nickeliferous oxidized ore particle that step 4) obtains step 3) and coal dust, add water and make it become pelletizing than uniform mixing by the quality of 100:12 during mixing, as coal blending in once;
The pelletizing that step 5) obtains step 4) and beans or coke powder compare uniform mixing by the quality of 100:30; And put into through feeding device and to carry out high temperature reduction in the rotary kiln; The material of roasting is through the hot metal Restore All, and degree of metalization reaches more than 99%, and the temperature of rotary kiln end is 1300 ℃; Rotary kiln end adopts the burner coal powder injection that thermal source is provided one time, and secondary high-pressure wind replenishes and the ring formation adjustment as air quantity; And
Step 6) is carried out separating of metal and slag through the molten roasted ore that divides stove from rotary kiln, to come out; The metal that is reduced fully generates the multi-element metal nickel shot through shrend; Slag then gets into the slag making pond and generates the piece slag, uses as material of construction, and wherein slag adds properties-correcting agent 2 ~ 3% after getting into the slag making pond; Generate the piece slag, use as material of construction.
Flow process of the present invention is short, energy consumption is low, and metal recovery rate is high; Carry out agglomeration with generally smelting the slag that generates, be more suitable for, reduce simultaneously and take up an area of the space as the building materials used.The advantage of interdisciplinary studies such as technological process collection of the present invention control, heat energy, material reaction is the novel process of a kind of retailoring system.
The present invention is not limited to above-mentioned preferred forms; Anyone can draw other various forms of products under enlightenment of the present invention; No matter but on its shape or structure, do any variation; Every have identical with a application or akin technical scheme, all drops within protection scope of the present invention.
Claims (4)
1. a nickel oxide ore melting method is characterized in that, may further comprise the steps:
The quality that step 1) is pressed 100:6 ~ 8 with nickeliferous oxidized ore and siccative is reduced to below 25% the natural moisture in the nickeliferous oxidized ore than uniform mixing;
Step 2) dried nickeliferous oxidized ore is carried out primary fragmentation with jaw crusher, being broken into particle diameter is the particle below the 10cm;
Step 3) through crusher to step 2) particle that obtains carries out secondary breaking, being broken into particle diameter is the particle below the 20mm, and carries out vibratory screening apparatus, filters out the particle of particle diameter less than 5mm;
The particle diameter that step 4) obtains step 3) less than the nickeliferous oxidized ore particle of 5mm and coal dust by the quality of 100:8 ~ 12 than uniform mixing, add water during mixing and make it become pelletizing, as coal blending in once;
The pelletizing that step 5) obtains step 4) and beans or coke powder, and are put into through feeding device and to be carried out high temperature reduction in the rotary kiln than uniform mixing by the quality of 100:30; And
Step 6) is carried out separating of metal and slag through the molten roasted ore that divides stove from rotary kiln, to come out, and the metal that is reduced fully generates the multi-element metal nickel shot through shrend, and slag then gets into the slag making pond and generates the piece slag, uses as material of construction.
2. nickel oxide ore melting method according to claim 1 is characterized in that: in the said step 3), passed through vibratory screening apparatus screening after, particle diameter carries out tertiary crushing greater than the particle of 5mm through crusher, is broken into the particle of particle diameter less than 5mm.
3. nickel oxide ore melting method according to claim 2; It is characterized in that: in the said step 5); The temperature of rotary kiln end is 1300 ℃, and rotary kiln end adopts the burner coal powder injection that thermal source is provided one time, and secondary high-pressure wind replenishes and the ring formation adjustment as air quantity.
4. according to each described nickel oxide ore melting method of claim 1-3, it is characterized in that: in the said step 6), slag adds properties-correcting agent 2 ~ 3% after getting into the slag making pond, generates the piece slag.
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| CN2012102232574A CN102758093A (en) | 2012-07-02 | 2012-07-02 | Smelting method for nickel oxide ore |
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| CN2012102232574A CN102758093A (en) | 2012-07-02 | 2012-07-02 | Smelting method for nickel oxide ore |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882224A (en) * | 2014-04-02 | 2014-06-25 | 四川金广实业（集团）股份有限公司 | Coupling type sintering method of low-grade laterite-nickel ores |
| CN114717423A (en) * | 2022-04-25 | 2022-07-08 | 酒泉钢铁(集团)有限责任公司 | High-temperature treatment process for stainless steel dedusting ash coal-based hydrogen metallurgy rotary kiln |
| CN114752763A (en) * | 2022-04-25 | 2022-07-15 | 酒泉钢铁(集团)有限责任公司 | Low-temperature treatment process for stainless steel dedusting ash coal-based hydrogen metallurgy rotary kiln |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101033515A (en) * | 2007-04-16 | 2007-09-12 | 中南大学 | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore |
| CN101418389A (en) * | 2008-12-16 | 2009-04-29 | 毛黎生 | Method for directly reducing grain nickel iron in rotary kiln by using laterite nickle mine |
| CN102226233A (en) * | 2011-05-27 | 2011-10-26 | 广西盛隆冶金有限公司 | Method and system for pretreating lateritic nickel ore |
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2012
- 2012-07-02 CN CN2012102232574A patent/CN102758093A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033515A (en) * | 2007-04-16 | 2007-09-12 | 中南大学 | Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore |
| CN101418389A (en) * | 2008-12-16 | 2009-04-29 | 毛黎生 | Method for directly reducing grain nickel iron in rotary kiln by using laterite nickle mine |
| CN102226233A (en) * | 2011-05-27 | 2011-10-26 | 广西盛隆冶金有限公司 | Method and system for pretreating lateritic nickel ore |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882224A (en) * | 2014-04-02 | 2014-06-25 | 四川金广实业（集团）股份有限公司 | Coupling type sintering method of low-grade laterite-nickel ores |
| CN103882224B (en) * | 2014-04-02 | 2016-01-06 | 四川金广实业（集团）股份有限公司 | A kind of manifold type sintering method of low-grade laterite nickel ore |
| CN114717423A (en) * | 2022-04-25 | 2022-07-08 | 酒泉钢铁(集团)有限责任公司 | High-temperature treatment process for stainless steel dedusting ash coal-based hydrogen metallurgy rotary kiln |
| CN114752763A (en) * | 2022-04-25 | 2022-07-15 | 酒泉钢铁(集团)有限责任公司 | Low-temperature treatment process for stainless steel dedusting ash coal-based hydrogen metallurgy rotary kiln |
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Application publication date: 20121031 |