CN102703733A - Nickel smelting production method of laterite nickel ore molten pool - Google Patents
Nickel smelting production method of laterite nickel ore molten pool Download PDFInfo
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- CN102703733A CN102703733A CN2012102066790A CN201210206679A CN102703733A CN 102703733 A CN102703733 A CN 102703733A CN 2012102066790 A CN2012102066790 A CN 2012102066790A CN 201210206679 A CN201210206679 A CN 201210206679A CN 102703733 A CN102703733 A CN 102703733A
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- China
- Prior art keywords
- laterite
- nickel ore
- type nickel
- ferronickel
- bath smelting
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 178
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 87
- 238000003723 Smelting Methods 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 229910001710 laterite Inorganic materials 0.000 title abstract description 9
- 239000011504 laterite Substances 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 7
- 229910000863 Ferronickel Inorganic materials 0.000 claims description 41
- 230000002829 reductive effect Effects 0.000 claims description 23
- 238000002844 melting Methods 0.000 claims description 22
- 230000008018 melting Effects 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 14
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 7
- 239000011490 mineral wool Substances 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- 239000002802 bituminous coal Substances 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 235000017550 sodium carbonate Nutrition 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000020169 heat generation Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 28
- 238000006243 chemical reaction Methods 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 11
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- 229910004283 SiO 4 Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 235000010755 mineral Nutrition 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 229910004762 CaSiO Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052903 pyrophyllite Inorganic materials 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000020095 red wine Nutrition 0.000 description 2
- 241000566146 Asio Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- 229910017625 MgSiO Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a nickel smelting production method of a laterite nickel ore molten pool, which includes the following steps: a) blending the laterite nickel ore and reducing agent, so as to obtain a mixture; and b) feeding the mixture into the molten pool for smelting, so as to obtain the nickel product and the waste residue. According to the nickel smelting production method of the laterite nickel ore molten pool of the invention embodiment, the method obtaining the nickel through smelting the nickel ore in the molten pool is simple to carry out, is highly operable, can greatly reduce the energy consumption of the nickel smelting, and is environment-friendly; and the laterite smelting can be carried out in the area lack of electric power, the coal can provide the energy source for the whole production process, and the high-temperature flue gas dedusted during the production process can be used for heat energy recovery through the waste heat generation technology, so as to effectively reduce the energy consumption of the whole smelting process.
Description
Technical field
The present invention relates to the Metal smelting technical field, more specifically, the present invention relates to the method that a kind of laterite-type nickel ore bath smelting is produced ferronickel.
Background technology
Characteristics such as that nickel has is anti-oxidant, anticorrosive, high temperature resistant, intensity is high, ductility is good; Its purposes very extensively; Especially the consumption proportion in iron and steel and non-ferrous metal metallurgy industry is maximum; Next is applied in industries such as light industry, machinofacture, chemical industry, oil and electric power, and high-technology field is also very vigorous to the demand of nickel.
The reserves of world's continental rise nickel are about 41,700,000,000 tons, and 39.14% form with sulphide ores exists, and about in the world 70% nickel is from sulphide ores, to extract, and compose to exist the nickel in the ore deposit to account for 60.16% of nickel reserves.But along with the nickel sulfide ore of economic utilization and the exhaustion day by day of higher-grade red soil nickel ore resource, the economic development of a large amount of low-grade red soil nickel ores that exist has become the research focus of current metallurgy of nickel.
Yet present red soil nickel ore mainly adopts the method for revolution roasting kiln to come smelting ferronickel, and this method and apparatus processing power is lower, and energy consumption is big, is unfavorable for environmental protection, therefore still remains to be improved.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or provides a kind of useful commerce to select at least.
For this reason, one object of the present invention is to propose a kind of method that the laterite-type nickel ore bath smelting simple, that energy consumption is low and feasibility is strong is produced ferronickel of implementing.
Method according to the laterite-type nickel ore bath smelting of the embodiment of the invention is produced ferronickel may further comprise the steps: a) said laterite-type nickel ore is mixed with reductive agent, obtain mixture; B) said mixture is carried out bath smelting, obtain ferronickel product and waste residue.
Produce the method for ferronickel according to the laterite-type nickel ore bath smelting of the embodiment of the invention; Through the method for bath smelting laterite-type nickel ore is carried out melting and obtain ferronickel, this method is implemented simple, and is workable; And greatly reduce the energy consumption of ferronickel melting; Help environmental protection, can carry out laterite smelting work in the area that electric power lacks, and coal can provide the energy of whole process of production; High-temperature flue gas carries out heat energy recycle through cogeneration technology capable of using after taking off dirt in the production process, reaches the effect of the whole smelting process energy consumption of effective reduction.
In addition, laterite-type nickel ore bath smelting according to the above embodiment of the present invention is produced the method for ferronickel, can also have following additional technical characterictic:
According to one embodiment of present invention, step a) may further comprise the steps: laterite-type nickel ore a-1) is provided, and dry said laterite-type nickel ore obtains the exsiccant laterite-type nickel ore; A-2) the exsiccant laterite-type nickel ore is mixed with said reductive agent, obtain said mixture.
According to one embodiment of present invention, in said mixture, contain the said laterite-type nickel ore of 60～80 weight parts and the said reductive agent of 5～20 weight parts.
According to one embodiment of present invention, said reductive agent is to be selected from hard coal, bituminous coal and the coke one or more.
According to one embodiment of present invention, the slag former that also is added with 5～20 weight parts in the said step a) is to obtain said mixture.
According to one embodiment of present invention, said slag former is to be selected from Wingdale, lime, rhombspar, yellow soda ash, sodium sulfate, gypsum and the calcium sulfate one or more.
According to one embodiment of present invention, said bath smelting is top-blown bath melting, side-blowing bath melting or bottom blowing bath smelting.
According to one embodiment of present invention, further comprising the steps of: as c) said waste residue to be carried out recycling to obtain mineral wool and/or manual sandstone.
According to one embodiment of present invention, said bath smelting temperature is 1400～1600 ℃.
According to one embodiment of present invention, said laterite-type nickel ore carries out drying through dry kiln.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is a schematic flow sheet of producing the method for ferronickel according to the laterite-type nickel ore bath smelting of the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings.Be exemplary through the embodiment that is described with reference to the drawings below, be intended to be used to explain the present invention, and can not be interpreted as limitation of the present invention.
At first, with reference to figure 1 flow process that laterite-type nickel ore bath smelting involved in the present invention is produced the method for ferronickel is described.
Concrete, the method that laterite-type nickel ore bath smelting involved in the present invention is produced ferronickel may further comprise the steps:
A) said laterite-type nickel ore is mixed with reductive agent, obtain mixture;
B) said mixture is carried out bath smelting, obtain ferronickel product and waste residue.
Thus, the method for producing ferronickel according to the laterite-type nickel ore bath smelting of the embodiment of the invention, the method through bath smelting has realized that the laterite-type nickel ore melting obtains the process of ferronickel; This method is implemented simple; Workable, and greatly reduce the energy consumption of ferronickel melting, help environmental protection; Can carry out laterite smelting work in the area that electric power lacks; And coal can provide the energy of whole process of production, and high-temperature flue gas carries out heat energy recycle through cogeneration technology capable of using after taking off dirt in the production process, reaches the effect of the whole smelting process energy consumption of effective reduction.
About step a); It will be appreciated that; Said laterite-type nickel ore mixes the method that obtains mixture with reductive agent do not have particular restriction; Considering possibly exist in the laterite-type nickel ore than juicy to influence normally carrying out of bath smelting, can carry out drying to said laterite-type nickel ore and obtain mixing behind the exsiccant laterite-type nickel ore again.The drying plant of said laterite-type nickel ore does not have particular restriction yet, as long as can play the effect of dry laterite-type nickel ore, preferably, said laterite-type nickel ore carries out drying through dry kiln.
Its concrete operations can for: laterite-type nickel ore is provided, and dry said laterite-type nickel ore obtains the exsiccant laterite-type nickel ore; The exsiccant laterite-type nickel ore is mixed with said reductive agent, obtain said mixture.
Method about bath smelting it will be appreciated that, the method for said bath smelting does not have particular restriction, can select different melting method according to different melting equipments.Preferably, said melting method can comprise top-blown bath melting, side-blowing bath melting or bottom blowing bath smelting.
According to the method that the laterite-type nickel ore bath smelting of the embodiment of the invention is produced ferronickel, contain the said laterite-type nickel ore of 60～80 weight parts in the said mixture, the said reductive agent of 5～20 weight parts.
Selection about reductive agent it will be appreciated that, said reductive agent has reductibility; And can be used as the fuel use, to reach the temperature of bath smelting through burning, consider the cost problem; Preferably, said reductive agent can be to be selected from hard coal, bituminous coal and the coke one or more.
Nickel is to exist with complicated silicate form in laterite, like chlorite, villiersite, serpentine class mineral.All kinds of mineral all pass through and decompose to generate simple silicate, and simple silicate is directly with the reductive agent reaction or reacting with reductive agent behind the generation NiO under the slag former effect again.
(1) mechanism of the simple silicate of chlorite class mineral decomposition generation is:
（a）Ni
3Si
2O
5(OH)
4→Ni
3Si
2O
7+2H
2O
（b）2Ni
3Si
2O
7→3Ni
2SiO
4+SiO
2
(2) mechanism of the simple silicate of villiersite decomposition generation is:
（a）(Ni,Mg)
3Si
4O
10(OH)
2→3(Ni,Mg)SiO
3+SiO
2+H
2O
（b）2(Ni,Mg)SiO
3→(Ni,Mg)
2SiO
4+SiO
2
Simple silicate and the direct reduction mechanism of reductive agent are:
(Ni,Mg)
2SiO
4+C→Ni+CO
2+Mg
2SiO
4
Ni
2SiO
4(Ni, Mg)
2SiO
4(staple of participating in reaction in the slag former is the AO of slag former through producing after decomposing, and wherein, said AO is CaO, MgO or Na at slag former
2O, the decomposition mechanism of AO is seen the reaction of slag former in fusion process) effect down the reaction mechanism of replacement(metathesis)reaction generation NiO be:
(Ni,Mg)
2SiO
4+AO→NiO+(A,Mg)
2SiO
4
Ni
2SiO
4+AO→ASiO
4+NiO
The NiO that displaces is that The dissolved representes that with [NiO] its reduction mechanism is:
[NiO]+C→Ni+CO
2
Consider that iron possibly exist with pyrrhosiderite, rhombohedral iron ore, complicated silicate such as multi mineral forms such as serpentine, pyrophyllite in the laterite; Therefore; The iron of different existence state, its reduction mechanism is different, and the principal reaction of reductive agent in reduction process is also inequality.
(1) iron of pyrrhosiderite form existence, its melting and reducing mechanism is:
(a) the pyrrhosiderite high temperature dehydration decomposes
FeOOH→Fe
2O
3+H
2O
(b) melting and reducing
Fe
2O
3+C+O
2→Fe+CO
2
(2) rhombohedral iron ore melting and reducing mechanism is:
Fe
2O
3+C+O
2→Fe+CO
2
(3) iron melting and reducing mechanism is in the pyrophyllite:
(a) pyrophyllite pyrolytic decomposition
Fe
2Si
4O
10(OH)
2→Fe
2O
3+SiO
2+H
2O
(b) melting and reducing
Fe
2O
3+C+O
2→Fe+CO
2
Thus; Can make the ferronickel product that mixes by Ni, Fe etc.; Wherein, The mass percent of Ni is 10～30% in the said ferronickel product, and the mass percent of Fe is 70～90%, also contains mass percent in the said ferronickel product and be 0.01～0.1% S and mass percent and be 0.1～5% C.
Consider the temperature of reaction of ferronickel melting, in order to guarantee normally carrying out of melting reaction, preferably, the temperature of reaction of said bath smelting is 1400～1600 ℃.
Because the temperature of reaction of said bath smelting is 1400～1600 ℃, the ferronickel product outflow temperature that reaction obtains under this temperature is about 1300～1500 ℃, and the outflow temperature of waste residue is about 1350～1550 ℃.Consider that the higher waste residue of temperature is discharged the treating processes difficulty and cost is higher, therefore, can before said mixture carries out bath smelting, mix an amount of slag former to reduce the waste residue outflow temperature.Preferably, can in said mixture, sneak into the slag former of 5～20 weight parts.
It will be appreciated that do not have particular restriction about the selection of said slag former, as long as can combine the SiO in the extra dry red wine soil type nickel minerals melt
2, the fusing point that reduces extra dry red wine soil type nickel minerals gets final product.
Preferably, said slag former is to be selected from Wingdale, lime, rhombspar, yellow soda ash, sodium sulfate, gypsum and the calcium sulfate one or more.
The principal reaction of Wingdale in the bath smelting process is:
CaCO
3→CaO+CO
2
CaO+SiO
2→CaSiO
3
The principal reaction of rhombspar in the bath smelting process is:
CaMgCO
3→CaO+MgO+CO
2
CaO+SiO
2→CaSiO
3
MgO+SiO
2→MgSiO
3
The principal reaction of yellow soda ash in the bath smelting process is:
Na
2CO
3→Na
2O+CO
2
Na
2O+SiO
2→Na
2SiO
3
The principal reaction of sodium sulfate in the bath smelting process is:
Na
2SO
4→Na
2O+SO
2+O
2
Na
2O+SiO
2→Na
2SiO
3
The principal reaction of calcium sulfate in the bath smelting process is:
CaSO
4→CaO+SO
2+O
2
CaO+SiO
2→CaSiO
3
Having under the reductive agent situation, the calcium sulfate decomposition mechanism is:
2CaSO
4+C→2CaO+2SO
2+CO
2
Thus, after adding slag former, the outflow temperature of waste residue can be reduced to 1350～1450 ℃, has reduced waste residue and has discharged the difficulty of handling, and has reduced cost.
Consider a large amount of by product of generation in the bath smelting process,, can like waste residue, carry out recycling by product in order better to play environmental-protection function.Preferably, can said waste residue be carried out recycling and obtain mineral wool and/or manual sandstone.
The method of producing ferronickel according to laterite-type nickel ore bath smelting of the present invention is described below in conjunction with specific embodiment.
Embodiment 1
Laterite-type nickel ore is provided, and the adding dry kiln carries out drying and obtains the exsiccant laterite-type nickel ore, is the mixed of 7:1:2 with the mass ratio with exsiccant laterite-type nickel ore, hard coal and Wingdale, obtains mixture; Mixture is joined in the top blast smelting furnace, under 1500 ℃, carry out the top-blown bath melting, obtain ferronickel product and waste residue; Wherein, contain Ni:17%, Fe:80% in the said ferronickel product; S:0.02%, P:0.002%, C:2% (mass percent).Waste residue is carried out recycling obtain mineral wool and/or manual sandstone.
Embodiment 2
Laterite-type nickel ore is provided, and the adding dry kiln carries out drying and obtains the exsiccant laterite-type nickel ore, is the mixed of 8:1:1 with the mass ratio with exsiccant laterite-type nickel ore, bituminous coal and gypsum, obtains mixture; Mixture is joined in the side-blown smelting furnace, under 1400 ℃, carry out the side-blowing bath melting, obtain ferronickel product and waste residue; Wherein, contain Ni:15%, Fe:82% in the said ferronickel product; S:0.02%, P:0.002%, C:2% (mass percent).Waste residue is carried out recycling obtain mineral wool and/or manual sandstone.
Embodiment 3
Laterite-type nickel ore is provided, and the adding dry kiln carries out drying and obtains the exsiccant laterite-type nickel ore, is the mixed of 15:2:3 with the mass ratio with exsiccant laterite-type nickel ore, coke and calcium sulfate, obtains mixture; Mixture is joined in the bottom blowing smelting furnace, under 1600 ℃, carry out the bottom blowing bath smelting, obtain ferronickel product and waste residue; Wherein, contain Ni:16%, Fe:81% in the said ferronickel product; S:0.02%, P:0.002%, C:2% (mass percent).Waste residue is carried out recycling obtain mineral wool and/or manual sandstone.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (10)
1. the method that the laterite-type nickel ore bath smelting is produced ferronickel is characterized in that, may further comprise the steps:
A) said laterite-type nickel ore is mixed with reductive agent, obtain mixture;
B) said mixture is carried out bath smelting, obtain ferronickel product and waste residue.
2. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that step a) may further comprise the steps:
A-1) laterite-type nickel ore is provided, and dry said laterite-type nickel ore obtains the exsiccant laterite-type nickel ore;
A-2) the exsiccant laterite-type nickel ore is mixed with said reductive agent, obtain said mixture.
3. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that, in said mixture, contains the said laterite-type nickel ore of 60～80 weight parts and the said reductive agent of 5～20 weight parts.
4. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that, said reductive agent is to be selected from hard coal, bituminous coal and the coke one or more.
5. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that the slag former that also is added with 5～20 weight parts in the said step a) is to obtain said mixture.
6. laterite-type nickel ore bath smelting according to claim 4 is produced the method for ferronickel, it is characterized in that, said slag former is to be selected from Wingdale, lime, rhombspar, yellow soda ash, sodium sulfate, gypsum and the calcium sulfate one or more.
7. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that said bath smelting is top-blown bath melting, side-blowing bath melting or bottom blowing bath smelting.
8. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that, and is further comprising the steps of:
C) said waste residue is carried out recycling to obtain mineral wool and/or manual sandstone.
9. laterite-type nickel ore bath smelting according to claim 1 is produced the method for ferronickel, it is characterized in that said bath smelting temperature is 1400～1600 ℃.
10. laterite-type nickel ore bath smelting according to claim 2 is produced the method for ferronickel, it is characterized in that said laterite-type nickel ore carries out drying through dry kiln.
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| CN2012102066790A CN102703733A (en) | 2012-06-18 | 2012-06-18 | Nickel smelting production method of laterite nickel ore molten pool |
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|---|---|---|---|
| CN2012102066790A CN102703733A (en) | 2012-06-18 | 2012-06-18 | Nickel smelting production method of laterite nickel ore molten pool |
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| CN102703733A true CN102703733A (en) | 2012-10-03 |
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| CN2012102066790A Pending CN102703733A (en) | 2012-06-18 | 2012-06-18 | Nickel smelting production method of laterite nickel ore molten pool |
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| CN104803595A (en) * | 2015-04-15 | 2015-07-29 | 张成福 | Production method of rock wool |
| CN106609325A (en) * | 2015-10-27 | 2017-05-03 | 中国恩菲工程技术有限公司 | Technology for reducing laterite nickel ore by smelting oxygen-enriched pulverized coal and smelting reduction furnace |
| CN114672662A (en) * | 2022-04-14 | 2022-06-28 | 中南大学 | Resource utilization method of heavy metal-containing sewage acid sludge |
| CN114717424A (en) * | 2022-01-24 | 2022-07-08 | 池州西恩新材料科技有限公司 | Smelting method for recovering copper, cobalt and nickel by utilizing low-grade solid waste raw materials containing copper, cobalt and nickel |
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| CN114672662A (en) * | 2022-04-14 | 2022-06-28 | 中南大学 | Resource utilization method of heavy metal-containing sewage acid sludge |
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