CN104087753B - A kind of lateritic nickel ore self catalyzed reduction produces the method for nickelic grade ferronickel powder - Google Patents
A kind of lateritic nickel ore self catalyzed reduction produces the method for nickelic grade ferronickel powder Download PDFInfo
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- CN104087753B CN104087753B CN201410360982.5A CN201410360982A CN104087753B CN 104087753 B CN104087753 B CN 104087753B CN 201410360982 A CN201410360982 A CN 201410360982A CN 104087753 B CN104087753 B CN 104087753B
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 147
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 45
- 229910000863 Ferronickel Inorganic materials 0.000 title claims abstract description 22
- 230000009467 reduction Effects 0.000 title claims abstract description 22
- 239000000843 powder Substances 0.000 title claims abstract description 19
- 238000005453 pelletization Methods 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 238000007885 magnetic separation Methods 0.000 claims abstract description 16
- 239000012141 concentrate Substances 0.000 claims abstract description 15
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 239000002516 radical scavenger Substances 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 18
- 239000000654 additive Substances 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 14
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 9
- 235000011152 sodium sulphate Nutrition 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 16
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 12
- 238000002309 gasification Methods 0.000 abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 6
- 239000011707 mineral Substances 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005054 agglomeration Methods 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 abstract description 2
- 239000008188 pellet Substances 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- -1 alkaline-earth metal salt Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- 229910001710 laterite Inorganic materials 0.000 description 1
- 239000011504 laterite Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009868 nickel metallurgy Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of method that lateritic nickel ore self catalyzed reduction produces nickelic grade ferronickel powder, belongs to engineering of comprehensive utilization of mineral field.The method, by powdery lateritic nickel ore and reducing agent, binding agent mixed pelletizing by a certain percentage, carbonaceous pelletizing at high temperature reduction roasting, carries out multistage grinding, low intensity magnetic separation, magnetic tailing is carried out middle magnetic and scans after cooling, scavenger concentrate returns raw ore pelletizing.This part returns the feature of product and is fine size and contains a small amount of nickel iron metal granules, and it act as: fine grained is filled between coarse grained gap, improves pellet strength in balling process；In roasting process, on the one hand metallic iron promotes the reduction of nickel by being catalyzed coal gasification, on the other hand as the nucleator of newly-generated metal nickel-iron particle, promotes the agglomeration of metal nickel-iron particle.This technique is compared with current coal-based direct reduction magnetic separation process, and nickel recovery and nickel grade all significantly improve, and nickel recovery reaches 90%, nickel grade is up to more than 10%.
Description
Technical field
The present invention relates to engineering of comprehensive utilization of mineral field, particularly relate to a kind of lateritic nickel ore self catalyzed reduction raw
The method producing nickelic grade ferronickel powder.
Background technology
In recent years, along with easily selecting the quick of nickel sulfide resource to consume, whole world nickel industry is by the emphasis of development of resources
Transfer to lateritic nickel ore (low-grade nickel ore) resource of rich reserves.Traditional limonite type laterite nickel
Ore wet process processes and mainly includes the techniques such as high pressure acidleach, reduction roasting-ammonia leaching and normal pressure acidleach；Silicon magnesium types is red
Soil nickel minerals pyrogenic attack includes the technique such as electric furnace reduction nickel metallurgy ferroalloy and sulfiding smelting output nickel matte.These pass
System technique exists that energy consumption is high or inefficient problem.For finding new more effective lateritic nickel ore process side
Method, nearest domestic scholars have developed lateritic nickel ore reduction roasting magnetic separation process.The method is with coal for reduction
Agent, reduces to lateritic nickel ore at a certain temperature, makes the nickel in lateritic nickel ore and iron be reduced directly to gold
Belonging to, then reclaim the nickel after reduction and iron by mill ore magnetic selection, obtain is the ferronickel of powdery, referred to as ferronickel
Powder.Reduction roasting magnetic separation method processes the technique of lateritic nickel ore to have low cost, saves the energy, nickel recovery height
Etc. feature.This technique is that the exploitation of lateritic nickel ore open new approach.
But it is in this process, in order to realize high efficiente callback and obtain the metal nickel-iron product of high-quality, logical
Often need to add alkali metal containing or alkaline-earth metal material as additive, such as sodium carbonate, sodium sulphate etc..These
Additive mainly has two aspect effects, and one is catalysis coal gasification, thus promotes the reduction of iron mineral, improves iron
The rate of recovery；Second is as flux, improves the reactivity of nickeliferous silicate, optimizes metal nickel-iron particle
Agglomeration condition, it is simple to the recovery of ferronickel particle, and optimize the removing of impurity, improve product quality.
Although using these additives to have as above advantage, but too increase production cost.
Meanwhile, in conventional patent or paper, researcher generally to roasted product use one section or
Multistage grinding, magnetic separation obtain last reduced nickel iron powder, but to roughly select and selected operation mine tailing process not
Explain.There are about 15～20% nickel be lost in mine tailing, the nickel in this part mine tailing be mainly with small gold
Belong to ferronickel particle to exist, but be because granularity superfine (generally below 10 μm), difficult during low intensity magnetic separation
Enter into be captured in mine tailing, cause the waste of resource.
Therefore, the present invention, by reclaiming the nickel in mine tailing further, adds pelletizing to simultaneously as additive
During, it is possible not only to Substitute For Partial additive, optimizes direct-reduction roasting process, also improve metallic nickel
The rate of recovery, significant for effectively utilizing of lateritic nickel ore resource.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of lateritic nickel ore self catalyzed reduction and produces nickelic grade
The method of ferronickel powder.
The main processes of the method is as follows: first, by granularity below 2mm powdery lateritic nickel ore with
Granularity at the reducing agent coal of below 2mm, additive according to 1:(0.05～0.1): the matter of (0.05～0.15)
Amount, than mixing, adds the water of 8%～12%, is pressed into carbonaceous pelletizing after mixing on ball press；So
After carry out dry carbonaceous pelletizing being reduced directly roasting, after the pelletizing after roasting is broken through primary grinding-
One section of concentrate and one section of mine tailing is obtained after low intensity magnetic separation；The one section of concentrate obtained is after secondary grinding-low intensity magnetic separation
Obtain reduced nickel iron powder (nickel recovery reaches 85%, and nickel grade is higher than 8%) and two sections of mine tailings；One obtained
Section mine tailing directly carries out middle magnetic and scans, and obtains scavenger concentrate and mine tailing；By obtain two sections of mine tailings and scan essence
Ore deposit returns to after merging mix pressure ball process, continues to participate in pelletizing；Now, the interpolation scope of additive can contract
Little to 2%～10%, then through direct-reduction roasting-ore grinding-magnetic separation process same as described above, obtain nickelic
Grade ferronickel powder (rate of recovery of nickel reaches 90%, nickel grade be higher than 10%), two sections of mine tailings of generation and scanning
Concentrate returns to pressure ball process after merging.
Wherein, in lateritic nickel ore, nickel grade is 1.4%～2.0%, and Iron grade is between 25%～35%；Additive
For lime and the combination of sodium sulphate, wherein the mass ratio of lime and sodium sulphate is 0～1:1；The carbon containing ball being dried
The temperature range of group's direct-reduction roasting is 1150 DEG C～1250 DEG C, and the time of reduction roasting is 20～60min；
The ore milling concentration of primary grinding and secondary grinding is 60%～70%；Primary grinding fineness accounts for for-0.074mm
60%～80%, secondary grinding fineness accounts for 85%～95% for-0.074mm；The magnetic field intensity scope of low intensity magnetic separation is
80～110kA/m, the magnetic field intensity scope that middle magnetic is scanned is 140～160kA/m.
The principle of the present invention is: in one section of mine tailing, nickel mainly presented in metal nickel-iron particle,
But granularity is generally below 10 μm, can effectively reclaim by improving magnetic field intensity scanning operation.And two
Section mine tailing contains fine-graded metal nickel-iron particle, two sections of mine tailings and scavenger concentrate and powdery lateritic nickel ore equally
Mixed pelletizing, can improve the balling-up of material, improves pellet strength.Additionally metallic iron is urging of coal gasification
Agent, and coal gasification reaction is the important rate-determining steps of carbonaceous pelletizing direct-reduction calcination, so adding
After adding the product of this part nickel metal iron, it is possible to be catalyzed coal gasification thus promote ferronickel mineral reduction, improve
The rate of recovery of nickel.Meanwhile, this part metals ferronickel particle can be as the nucleation of newly-generated metal nickel-iron particle
Agent, promotes growing up of metallic particles, containing a lot of intergrowths in the two sections of mine tailings additionally returned and scavenger concentrate
Particle, can promote the mineral of ferronickel particle growth containing FeS etc..Its effect and the alkali metal added at present or
The effect of alkaline-earth metal salt is similar, therefore can play part and substitute the effect of additive.
The process utilizing the present invention can obtain nickeliferous more than 10% effectively from lateritic nickel ore, and nickel reclaims
Rate reach 90% and other impurity contents meet the ferronickel powder of iron-making and steel-making raw material standard.With existing method phase
Ratio, the inventive method has a characteristic that the nickel in (1) synthetical recovery rougher tailings and two sections of mine tailings becomes
Point, make closed circuit flow process nickel recovery reach more than 90%, hence it is evident that higher than current flow process；(2) two sections of mine tailings and
Scavenger concentrate returns pelletizing, improves the balling-up of material, it is possible to reduce additive amount；(3) two sections of tails
Metallic iron in ore deposit and scavenger concentrate can be catalyzed coal gasification and serve as the nucleation of newly-generated metal nickel-iron particle
Agent, thus promote reduction and the growth of metal nickel-iron particle of nickel oxide, make ferronickel particle loss at tail
Probability in ore deposit reduces；(4) containing a lot of intergrowth particles in the two sections of mine tailings returned and scavenger concentrate, meeting
The mineral of ferronickel particle growth are promoted, its effect and alkali metal containing or the additive of alkaline-earth metal containing FeS etc.
Effect be similar to, such that it is able to reduce additive amount；(5) due to the recovery of one section of mine tailing, decrease
The discharge in finality ore deposit so that technique more environmental protection.
Accompanying drawing explanation
Fig. 1 is the technological process of the lateritic nickel ore self-catalysis nickelic grade ferronickel powder of production of the present invention.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached
Figure and specific embodiment are described in detail.
The present invention is directed to the problem that existing process lateritic nickel ore nickel recovery is low, it is provided that a kind of lateritic nickel ore is certainly
The method of catalytic production nickelic grade ferronickel powder.
As it is shown in figure 1, be the technological process of the lateritic nickel ore self-catalysis nickelic grade ferronickel powder of production of the present invention
Figure, is illustrated for two example two by specifically arranging such as workflow graph.
Embodiment 1
Certain lateritic nickel ore iron content 34.69%, nickeliferous 1.49%.Crushing raw ore accounts for 100% to-2mm, adds 5%
Reducing agent coal, add the sodium sulphate of 10%, adding water about 11% mixes at roll type ball press upper pressing ball,
Carbonaceous pelletizing green-ball drop resistant intensity average out to 7 time/obtained, compression strength 48N/；Dried dry
Ball drop resistant intensity is 9 times/, and compression strength is 360N/.Then reduce at 1200 DEG C in Muffle furnace
Roasting 50min.First it is crushed to-2mm after roasted ore cooling, then uses stage grinding, sort, one section of mill
Ore deposit concentration is 68%, and fineness accounts for 65% for-0.074mm, and secondary grinding concentration is 62%, and fineness is-0.074mm
Accounting for 95%, two stages of magnetic separation field intensity is intensity 89.6kA/m.The final nickel grade that obtains is 9.82%, and nickel reclaims
Rate is 86.32%, and other impurity contents meet the reduced nickel iron powder of steel-making requirements, and obtain two sections of mine tailings.
By one section of mine tailing, using the field intensity of 150kA/m to carry out middle magnetic and scan, it is thus achieved that nickeliferous 9.7%, nickel returns
Yield is the chats product of 9.1%.By this chats product and two sections of mine tailing pelletizings together with raw ore and reducing agent,
Being 7% at sodium sulphate consumption, the carbonaceous pelletizing green-ball drop resistant obtained under conditions of other pressure ball conditions are identical is strong
Degree average out to 8 time/, compression strength 67N/；Dried dry bulb drop resistant intensity is 12 times/, anti-
Compressive Strength is 454N/.Pelletizing processes through foregoing schemes again, and the final nickel grade that obtains is 11.12%,
Nickel recovery is 90.32%, and other impurity contents meet high-purity reduced nickel iron powder of steel-making requirements.
Embodiment 2
Certain lateritic nickel ore, iron content 26.68%, nickeliferous 1.46%.Crushing raw ore accounts for 100% to-1mm, adds
The reducing agent coal of 5%, lime with 5% and the sodium sulphate of 10%, as mixed sweetening agent, add water 10%, and mixing exists
Roll type ball press upper pressing ball.Carbonaceous pelletizing green-ball drop resistant intensity average out to 7 time/obtained, pressure resistance
Degree 50N/；Pelletizing is dried, and drop resistant intensity is 9 times/, and compression strength is 156N/.By carbon containing
Pelletizing is placed in Muffle furnace reduction roasting 50min at 1150 DEG C；-2mm first it is crushed to, so after roasted ore cooling
Rear employing stage grinding, sorting, primary grinding concentration is 65%, and fineness accounts for 65% for-0.074mm, two sections
Ore milling concentration is 60%, and fineness accounts for 95% for-0.074mm, and two stages of magnetic separation field intensity is intensity 89.6kA/m.
Final acquisition nickel content 9.01%, nickel recovery 85.79%, other impurity contents meet the reduction of steel-making requirements
Ferronickel powder, and obtain two sections of mine tailings.
By one section of mine tailing, using the field intensity of 150kA/m to carry out middle magnetic and scan, it is thus achieved that nickeliferous 9.8%, nickel returns
Yield is the chats product of 8.9%.By this chats product and two sections of mine tailing pelletizings together with raw ore and reducing agent,
Being 3% at lime consumption, sodium sulphate consumption is 6%, the carbon containing obtained in the case of other pressure ball conditions are identical
Pelletizing green-ball drop resistant intensity average out to 7 time/, compression strength 58N/；Dried dry bulb drop resistant intensity
Being 9 times/, compression strength is 165N/.Pelletizing processes through foregoing schemes again, finally obtains nickel
Content 10.20%, nickel recovery 90.43%, other impurity contents meet high-purity reduced nickel of steel-making requirements
Iron powder.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (1)
1. the method that a lateritic nickel ore self catalyzed reduction produces nickelic grade ferronickel powder, it is characterised in that: by powdery lateritic nickel ore with also
Former dose, additive is according to 1:(0.05～0.1): the mass ratio mixing of (0.05～0.15), add the water of 8%～12%, mixing
On ball press, carbonaceous pelletizing it is pressed into after Jun Yun；Then carry out dry carbonaceous pelletizing being reduced directly roasting, the ball after roasting
After primary grinding-low intensity magnetic separation, one section of concentrate and one section of mine tailing is obtained after group is broken；The one section of concentrate obtained through secondary grinding-
Reduced nickel iron powder and two sections of mine tailings are obtained after low intensity magnetic separation；The one section of mine tailing obtained directly carries out middle magnetic and scans, obtain scavenger concentrate and
Mine tailing；Return to pressure ball process after obtain two sections of mine tailings and scavenger concentrate being merged, continue to participate in pelletizing；The reduced nickel obtained
In iron powder, nickel recovery reaches 85%, nickel grade reaches more than 8%；
In described lateritic nickel ore, nickel grade is 1.4%～2.0%, and Iron grade is between 25%～35%；Powdery lateritic nickel ore granularity is at 2mm
Below；Described reducing agent is coal, and granularity is at below 2mm；Described additive is the combination of lime and sodium sulphate, wherein lime
It is 0～1:1 with the mass ratio of sodium sulphate；The temperature range of the carbonaceous pelletizing direct-reduction roasting being dried is 1150 DEG C～1250 DEG C,
The time of reduction roasting is 20～60min；
The ore milling concentration of primary grinding and secondary grinding is 60%～70%；Primary grinding fineness accounts for 60%～80% for-0.074mm, and two
Section mog accounts for 85%～95% for-0.074mm；The magnetic field intensity scope of low intensity magnetic separation is 80～110kA/m, and middle magnetic is scanned
Magnetic field intensity scope be 140～160kA/m；
Pelletizing after two sections of mine tailings and scavenger concentrate return raw ore, wherein the interpolation scope of additive is 2%～10%, through direct-reduction
In the nickelic grade ferronickel powder obtained after roasting-magnetic separation, nickel recovery reaches 90%, and nickel grade reaches more than 10%.
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| CN106784784B (en) * | 2015-11-20 | 2019-12-06 | 中国科学院宁波材料技术与工程研究所 | nickel-cobalt-manganese precursor and preparation method thereof |
| CN105463216A (en) * | 2015-11-27 | 2016-04-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Comprehensive utilization method of high-iron, high-aluminum and low-nickel type laterite-nickel ore |
| CN109013051B (en) * | 2018-07-12 | 2021-01-05 | 张雷 | Method and device for producing high-nickel alloy by coal-based direct reduction and magnetic separation |
| CN109355492A (en) * | 2018-11-08 | 2019-02-19 | 昆明理工大学 | A method of dilval is prepared using low-grade laterite nickel ore |
| CN112410541A (en) * | 2021-01-25 | 2021-02-26 | 矿冶科技集团有限公司 | Preparation method of magnetic concentrate, magnetic concentrate and application thereof, and method for enriching heavy metal by metallization reduction of iron-containing multi-metal oxide ore |
| CN112458278A (en) * | 2021-01-25 | 2021-03-09 | 矿冶科技集团有限公司 | Application and preparation method of cobalt-nickel-iron multi-element alloy concentrate and cobalt-manganese multi-metal oxide ore dressing-smelting combined method for solid-phase metallization reduction |
| CN113000218B (en) * | 2021-02-09 | 2022-10-28 | 矿冶科技集团有限公司 | Collecting agent for cobalt-manganese multi-metal oxide ores and preparation method and application thereof |
| CN113174459A (en) * | 2021-04-13 | 2021-07-27 | 中国科学院过程工程研究所 | Method for preparing secondary reduced iron powder by using iron ore concentrate |
| CN113957246A (en) * | 2021-10-29 | 2022-01-21 | 张雷 | Method and device for producing high-nickel alloy and reduced iron through coal-based coking magnetic separation |
| CN114032405A (en) * | 2021-11-17 | 2022-02-11 | 昆明理工大学 | Method for promoting growth of ferronickel alloy particles in process of producing ferronickel from laterite-nickel ore |
| CN114318005B (en) * | 2022-01-04 | 2022-11-29 | 中南大学 | Method for preparing high-grade nickel product by treating low-grade laterite-nickel ore with microwave |
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| CN102373329A (en) * | 2010-08-18 | 2012-03-14 | 沈阳有色金属研究院 | Method for gathering nickel and iron from laterite-nickel ores |
| CN102127633A (en) * | 2011-03-03 | 2011-07-20 | 湖南隆达冶金有限公司 | Method for enriching ferronickel by micro treatment on laterite-nickel ore |
| CN102146511A (en) * | 2011-03-17 | 2011-08-10 | 北京科技大学 | Method for reclaiming nickel and iron in laterite nickel ore by selective reduction roasting |
| CN103740933A (en) * | 2014-01-24 | 2014-04-23 | 温德昌 | Method for producing ferro-nickel alloy from nickel oxide material |
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