CN103215446A - Serpentine type laterite nickel ore hydrochloric acid normal pressure leaching cleaning production method - Google Patents
Serpentine type laterite nickel ore hydrochloric acid normal pressure leaching cleaning production method Download PDFInfo
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- CN103215446A CN103215446A CN2013100815900A CN201310081590A CN103215446A CN 103215446 A CN103215446 A CN 103215446A CN 2013100815900 A CN2013100815900 A CN 2013100815900A CN 201310081590 A CN201310081590 A CN 201310081590A CN 103215446 A CN103215446 A CN 103215446A
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- hydrochloric acid
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 123
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 60
- 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 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 229910001710 laterite Inorganic materials 0.000 title abstract description 6
- 239000011504 laterite Substances 0.000 title abstract description 6
- 238000002386 leaching Methods 0.000 title abstract 4
- 238000001354 calcination Methods 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 14
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 11
- 230000007062 hydrolysis Effects 0.000 claims abstract description 10
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 239000011777 magnesium Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 9
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 6
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 3
- 239000002689 soil Substances 0.000 claims description 29
- 238000005554 pickling Methods 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 239000012717 electrostatic precipitator Substances 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 239000000395 magnesium oxide Substances 0.000 description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- NBGBEUITCPENLJ-UHFFFAOYSA-N Bunazosin hydrochloride Chemical compound Cl.C1CN(C(=O)CCC)CCCN1C1=NC(N)=C(C=C(OC)C(OC)=C2)C2=N1 NBGBEUITCPENLJ-UHFFFAOYSA-N 0.000 description 4
- 210000003298 dental enamel Anatomy 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 150000002815 nickel Chemical class 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 and wherein Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
本发明涉及有色金属冶金技术领域，具体涉及一种蛇纹石型红土镍矿盐酸常压浸出清洁生产方法。本发明的蛇纹石型红土镍矿盐酸常压浸出清洁生产方法，包括以下步骤：1）将蛇纹石型红土镍矿与盐酸混合进行常压浸出反应；2）将步骤1）得到的酸浸液加入煅烧水解炉，进行煅烧反应；3）将步骤2）煅烧反应过程生成的氯化氢气体经两级以上除尘与氯化镁分离后进入吸收塔生成盐酸；同时，收集煅烧炉及除尘器底部的混合氧化物粉末；4）将步骤3）得到的混合氧化物粉堆存，用作后续高炉还原熔炼生产镍铁的原料。本发明既可实现蛇纹石型红土镍矿中镁、硅与镍、铁的分离，又可实现盐酸介质的再生循环，降低原料成本。The invention relates to the technical field of nonferrous metal metallurgy, in particular to a clean production method of serpentine-type laterite nickel ore hydrochloric acid leaching under normal pressure. The clean production method of serpentine-type laterite-nickel ore hydrochloric acid leaching under normal pressure comprises the following steps: 1) mixing serpentine-type laterite-nickel ore with hydrochloric acid for normal-pressure leaching reaction; 2) using the acid obtained in step 1) The immersion liquid is added to the calcining hydrolysis furnace to carry out the calcining reaction; 3) The hydrogen chloride gas generated in the calcining reaction process of step 2) is separated from the magnesium chloride by two or more stages of dust removal, and then enters the absorption tower to generate hydrochloric acid; at the same time, collect the mixed gas at the bottom of the calciner and the dust collector Oxide powder; 4) Stockpile the mixed oxide powder obtained in step 3) and use it as a raw material for subsequent blast furnace reduction smelting to produce ferronickel. The invention can not only realize the separation of magnesium, silicon, nickel and iron in the serpentine type laterite nickel ore, but also realize the regeneration cycle of the hydrochloric acid medium and reduce the cost of raw materials.
Description
Technical field
The present invention relates to the non-ferrous metallurgy technology field, be specifically related to a kind of serpentine type red soil nickel ore hydrochloric acid normal pressure and leach clean preparation method, the nickelic oxidation scum that the present invention obtains is produced the raw material of ferronickel as follow-up blast furnace retailoring, thereby realizes the cleaner production of serpentine type red soil nickel ore.
Background technology
Nickel is a kind of important strategic metallic element, and wherein, stainless steel accounts for 66% of global nickel total quantity consumed with the nickel demand, the also powerful increase of demand that develops driving nickel rapidly of stainless steel industry.Exist with the red soil nickel ore form more than 60% in world's continental rise nickel, and its product nickel amount only accounts for 40～45% of world's product nickel amount.Therefore, along with Ni sulphide mine resource of high grade, that field conditions is good is day by day exhausted, accelerating red soil nickel ore Study on Smelting Process and exploitation, become an international great metallurgical difficult problem at present, also is the global problem that is related to the stable supply of following nickel.
Because pure nickel class raw material alloy smelting steel and stainless steel mill were adopted in the progress of steel-smelting technology originally, considered that from economic angle oneself uses non-pure nickel class instead, make that the pyrometallurgical smelting development is very fast.At present in the world wide, the nickel of 70% in the laterite mineral products nickel amount is to adopt the thermal process flow process to reclaim, and the characteristics of nickelic with it, the low iron of serpentine type red soil nickel ore are wherein preferablyly smelted with thermal process.Pyrogenic attack technology with the most use in the world is that ferronickel is produced in the electric furnace reduction melting, is used to produce stainless steel.Specifically comprise rotary kiln-electric furnace reduction melting, shaft furnace-electric furnace reduction melting, sintering-processing methodes such as electric furnace reduction melting.The tradition pyrometallurgical smelting process has that technical maturity, flow process are short, the efficient advantages of higher, but also have that energy consumption is higher simultaneously, the fusion process quantity of slag too much, deficiency such as dust pollution arranged.
Some private enterprises of China are from the nineties in 20th century, independent development the blast-furnace smelting laterite produce the Rhometal new technology, and the capacity of small furnace having been smelted by the technical progress that continues is from 100m
3Bring up to 600m
3, obtained gratifying progress.But because MgO content is higher in the complicacy, particularly serpentine type laterite that red soil nickel ore is formed, slagging regime is difficult to follow the slagging regime of modern iron-smelting process, otherwise the quantity of slag is excessive, and energy consumption is higher.In addition,, cause the molten iron temperature step-down, be easy to generate nickel-containing molten iron and be difficult for effusive problem because the quantity of slag is big, slag blanket is thick, causes heat to be difficult to effectively reach the cupola well bottom.In sum, solve difficult problems such as energy consumption height in the pyrometallurgical smelting process, the quantity of slag are big, realize that the Sustainable development of less energy-consumption, low emission and the nickel industry of red soil nickel ore pyrometallurgical smelting process is the problem that this area is needed solution badly by research novel method, novel process.
Summary of the invention
Main purpose of the present invention is to realize nickel, iron and magnesium, silicon separate impurities by normal pressure acidleach, calcining hydrolysis, improve the nickel grade of advancing in the preceding oxidation scum of blast furnace, reduce the blast furnace smelting process the slag making amount, cut down the consumption of energy, reclaim hydrochloric acid medium simultaneously, reduce raw materials cost, a kind of have industrial operation and eco-friendly red soil nickel ore cleaning method are provided.
The present invention is a raw material with serpentine type red soil nickel ore, at first carries out the hydrochloric acid normal pressure and leaches, and makes metallic elements such as iron, nickel, cobalt enter pickling liquor, and silicon enters the slag phase.Then pickling liquor is quantitatively squeezed in the calcining hydrolysis stove and carry out calcination reaction.Enter the absorption tower after the hydrogen chloride gas that furnace roof produces passes through Multilevel Dust Control System and magnesium oxide separates and realize regeneration of hydrochloric acid.The solid powder main component that collect the calcining furnace bottom is a ferric oxide, wherein contains nickel oxide, and contains small amounts cobalt, magnesium oxide and aluminum oxide.Above-mentioned nickeliferous ferric oxide can be used as the raw material that ferronickel is produced in follow-up blast furnace retailoring.
Serpentine type red soil nickel ore hydrochloric acid normal pressure of the present invention leaches clean preparation method, may further comprise the steps:
1) with after the grinding of serpentine type red soil nickel ore, carry out normal pressure with mixed in hydrochloric acid and leach reaction, nickel, cobalt, iron, magnesium are leached, silicon enters the slag phase;
2) pickling liquor that step 1) is obtained adds calcining hydrolysis stove, after atomizing, carries out calcination reaction;
3) with step 2) hydrogen chloride gas that generates of calcination reaction process through the above dedusting of two-stage with enter the absorption tower after magnesium chloride separates and generate hydrochloric acid; Simultaneously, collect the mixed oxide powder of calcining furnace and fly-ash separator bottom;
4) mixed oxide powder that step 3) is obtained is stored up, and produces the raw material of ferronickel as follow-up blast furnace retailoring.
According to clean preparation method of the present invention, wherein, the described serpentine type of step 1) red soil nickel ore grind the back granularity be controlled at 200 orders following account for more than 80% of total ore deposit amount; Described hydrochloric acid mass percent concentration is 17%～31%; Described acidleach temperature is 50～120 ℃; The mass ratio of described hydrochloric acid and serpentine type red soil nickel ore is 2:1～4:1.
According to clean preparation method of the present invention, wherein, step 2) described pickling liquor feed rate is 10～1000L/h; Described calcining temperature is 500～1000 ℃.
According to clean preparation method of the present invention, wherein, a kind of as in tornado dust collector, sack cleaner or the electrostatic precipitator of the cleaning apparatus that the described every grade of dedusting of step 3) is used; Described absorption tower is single-stage or multistage packed absorber; Described recovery hydrochloric acid mass percent concentration is 17%～22%.
According to clean preparation method of the present invention, wherein, mixed oxide wherein contains nickel oxide based on ferric oxide at the bottom of the described calcining furnace of step 3), and contains small amounts cobalt, magnesium oxide, aluminum oxide; Dedusting mouth material is mainly magnesium oxide powder.
The present invention is directed to shortcomings such as the serpentine type red soil nickel ore pyrometallurgical smelting process quantity of slag is big, energy consumption height, propose a kind of novel process of the nickelic oxidation scum of hydrochloric acid normal pressure leaching-pickling liquor calcining hydrolysis/regeneration of hydrochloric acid-preparation of utilizing and handled serpentine type red soil nickel ore, the nickelic oxidation scum that obtains is as the raw material of follow-up blast furnace retailoring ferronickel, thus the cleaner production of realization serpentine type red soil nickel ore.This technology both can realize that magnesium in the serpentine type red soil nickel ore, silicon separated with nickel, iron; thereby improve the grade of nickel; reduce simultaneously blast furnace retailoring process the slag making amount, cut down the consumption of energy; can realize the reprocessing cycle of hydrochloric acid medium again; reduce raw materials cost; meet the requirement of cleaner production, using for the extensive chemical industry of red soil nickel ore resource provides a valid approach.
Advantage of the present invention is:
(1) realize that magnesium, silicon separate with nickel, iron in the serpentine type red soil nickel ore, thereby improve the grade of nickel, reduce simultaneously blast furnace retailoring process the slag making amount, cut down the consumption of energy, reduce pollutant emission, meet the requirement of cleaner production.
(2) recycling of realization hydrochloric acid medium reduces raw materials cost, is easy to realize the heavy industrialization application of red soil nickel ore resource.
Embodiment
Embodiment 1
Raw material is a serpentine type red soil nickel ore, grind the back granularity be controlled at 200 orders following account for more than 80% of total ore deposit amount, together join in the enamel reaction still than 3:1 by sour ore deposit with the hydrochloric acid of mass percent concentration 22% and to mix, to heat up, reaction picks up counting when temperature reaches 60 ℃.Reaction finishes the press filtration of laggard andante frame, and filter cake is a white residue, and principal element consists of in the pickling liquor: Fe:36.2g/L, Ni:3.78g/L, Co:0.14g/L, Cr:0.39g/L, Al:0.98g/L, Mg:19.13g/L, Si:0.17g/L.Pickling liquor is driven in the calcining hydrolysis stove with the speed of volume pump with 100L/h, after atomizing, under 700 ℃, carries out calcination reaction.The hydrogen chloride gas that reaction generates separates with magnesium oxide after cyclone dust removal and the dedusting of bag-type dust two-stage, enters the two-stage packed absorber and reclaims hydrochloric acid, and mean concns is 22%.The calcining furnace bottom obtains nickeliferous oxidation scum, and wherein the nickel grade is 4.1%, can be used as the raw material of follow-up blast furnace retailoring ferronickel.
Embodiment 2
Raw material is the hydrochloric acid normal pressure leach liquor of serpentine type red soil nickel ore, grind the back granularity be controlled at 200 orders following account for more than 80% of total ore deposit amount, together join in the enamel reaction still than 4:1 by sour ore deposit with the hydrochloric acid of mass percent concentration 18% and to mix, to heat up, reaction picks up counting when temperature reaches 80 ℃.Reaction finishes the press filtration of laggard andante frame, and filter cake is a white residue, and principal element consists of in the pickling liquor: Fe:30.6g/L, Ni:3.07g/L, Co:0.33g/L, Cr:0.41g/L, Al:1.02g/L, Mg:20.97g/L, Si:0.15g/L.Pickling liquor is driven in the calcining hydrolysis stove with the speed of volume pump with 200L/h, after atomizing, under 600 ℃, carries out calcination reaction.The hydrogen chloride gas that reaction generates separates with magnesium oxide after cyclone dust removal and the dedusting of bag-type dust two-stage, enters the two-stage packed absorber and reclaims hydrochloric acid, and mean concns is 18%.The calcining furnace bottom obtains nickeliferous oxidation scum, and wherein the nickel grade is 3.9%, can be used as the raw material of follow-up blast furnace retailoring ferronickel.
Embodiment 3
Raw material is a serpentine type red soil nickel ore, grind the back granularity be controlled at 200 orders following account for more than 80% of total ore deposit amount, together join in the enamel reaction still than 4:1 by sour ore deposit with the hydrochloric acid of mass percent concentration 17% and to mix, to heat up, reaction picks up counting when temperature reaches 50 ℃.Reaction finishes the press filtration of laggard andante frame, and filter cake is a white residue, and principal element consists of in the pickling liquor: Fe:33.4g/L, Ni:3.56g/L, Co:0.37g/L, Cr:0.4g/L, Al:1.01g/L, Mg:20.12g/L, Si:0.14g/L.Pickling liquor is driven in the calcining hydrolysis stove with the speed of volume pump with 1000L/h, after atomizing, under 500 ℃, carries out calcination reaction.The hydrogen chloride gas that reaction generates separates with magnesium oxide after cyclone dust removal and the dedusting of bag-type dust two-stage, enters the two-stage packed absorber and reclaims hydrochloric acid, and mean concns is 17%.The calcining furnace bottom obtains nickeliferous oxidation scum, and wherein the nickel grade is 4.0%, can be used as the raw material of follow-up blast furnace retailoring ferronickel.
Embodiment 4
Raw material is the hydrochloric acid normal pressure leach liquor of serpentine type red soil nickel ore, grind the back granularity be controlled at 200 orders following account for more than 80% of total ore deposit amount, together join in the enamel reaction still than 2:1 by sour ore deposit with the hydrochloric acid of mass percent concentration 31% and to mix, to heat up, reaction picks up counting when temperature reaches 120 ℃.Reaction finishes the press filtration of laggard andante frame, and filter cake is a white residue, and principal element consists of in the pickling liquor: Fe:40.7g/L, Ni:4.28g/L, Co:0.42g/L, Cr:0.56g/L, Al:1.91g/L, Mg:25.99g/L, Si:0.18g/L.Pickling liquor is driven in the calcining hydrolysis stove with the speed of volume pump with 10L/h, after atomizing, under 1000 ℃, carries out calcination reaction.The hydrogen chloride gas that reaction generates separates with magnesium oxide after cyclone dust removal and the dedusting of bag-type dust two-stage, enters the two-stage packed absorber and reclaims hydrochloric acid, and mean concns is 22%.The calcining furnace bottom obtains nickeliferous oxidation scum, and wherein the nickel grade is 4.3%, can be used as the raw material of follow-up blast furnace retailoring ferronickel.
Claims (5)
1. a serpentine type red soil nickel ore hydrochloric acid normal pressure leaches clean preparation method, may further comprise the steps:
1) with after the grinding of serpentine type red soil nickel ore, carry out normal pressure with mixed in hydrochloric acid and leach reaction, nickel, cobalt, iron, magnesium are leached, silicon enters the slag phase;
2) pickling liquor that step 1) is obtained adds calcining hydrolysis stove, after atomizing, carries out calcination reaction;
3) with step 2) hydrogen chloride gas that generates of calcination reaction process through the above dedusting of two-stage with enter the absorption tower after magnesium chloride separates and generate hydrochloric acid; Simultaneously, collect the mixed oxide powder of calcining furnace and fly-ash separator bottom;
4) mixed oxide powder that step 3) is obtained is stored up, and produces the raw material of ferronickel as follow-up blast furnace retailoring.
2. clean preparation method according to claim 1 is characterized in that, the described serpentine type of step 1) red soil nickel ore grind the back granularity be controlled at 200 orders following account for more than 80% of total ore deposit amount.
3. clean preparation method according to claim 1 is characterized in that, the described hydrochloric acid mass percent concentration of step 1) is 17%～31%; Described acidleach temperature is 50～120 ℃; The mass ratio of described hydrochloric acid and serpentine type red soil nickel ore is 2:1～4:1.
4. clean preparation method according to claim 1 is characterized in that step 2) described pickling liquor feed rate is 10～1000L/h; Described calcining temperature is 500～1000 ℃.
5. clean preparation method according to claim 1 is characterized in that, a kind of as in tornado dust collector, sack cleaner or the electrostatic precipitator of the cleaning apparatus that the described every grade of dedusting of step 3) is used; Described absorption tower is single-stage or multistage packed absorber.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757261A (en) * | 2013-12-05 | 2014-04-30 | 中国科学院过程工程研究所 | Clean production method for separating and comprehensively utilizing Fe, Ni, Co and Si in laterite-nickel ore hydrochloric acid normal-pressure leaching process |
| CN104561540A (en) * | 2015-01-07 | 2015-04-29 | 中国科学院过程工程研究所 | Method for selectively leaching serpentine type laterite-nickel ores by utilizing hydrochloric acid |
| WO2017206528A1 (en) * | 2016-05-31 | 2017-12-07 | 福安市康齐动力科技有限公司 | Method using exhaust gas to recover nickel from lateritic nickel ore |
| CN115109927A (en) * | 2021-03-17 | 2022-09-27 | 中国科学院过程工程研究所 | Method for removing manganese and magnesium from laterite-nickel ore hydrochloric acid leaching solution |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103757261A (en) * | 2013-12-05 | 2014-04-30 | 中国科学院过程工程研究所 | Clean production method for separating and comprehensively utilizing Fe, Ni, Co and Si in laterite-nickel ore hydrochloric acid normal-pressure leaching process |
| CN103757261B (en) * | 2013-12-05 | 2016-07-06 | 中国科学院过程工程研究所 | A kind of laterite nickel ore hydrochloric acid normal pressure leaching process ferrum separates and the clean preparation method comprehensively utilized with nickel, cobalt, silicon |
| CN104561540A (en) * | 2015-01-07 | 2015-04-29 | 中国科学院过程工程研究所 | Method for selectively leaching serpentine type laterite-nickel ores by utilizing hydrochloric acid |
| WO2017206528A1 (en) * | 2016-05-31 | 2017-12-07 | 福安市康齐动力科技有限公司 | Method using exhaust gas to recover nickel from lateritic nickel ore |
| CN115109927A (en) * | 2021-03-17 | 2022-09-27 | 中国科学院过程工程研究所 | Method for removing manganese and magnesium from laterite-nickel ore hydrochloric acid leaching solution |
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