CN101250626A - Method for extracting metallic nickel cobalt from irony nickel mine - Google Patents
Method for extracting metallic nickel cobalt from irony nickel mine Download PDFInfo
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- CN101250626A CN101250626A CNA2008100581875A CN200810058187A CN101250626A CN 101250626 A CN101250626 A CN 101250626A CN A2008100581875 A CNA2008100581875 A CN A2008100581875A CN 200810058187 A CN200810058187 A CN 200810058187A CN 101250626 A CN101250626 A CN 101250626A
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Abstract
The invention relates to a method for extracting metal nickel-cobal from iron nickel ores which comprises the following steps: breaking iron nickel ore, adding a certain amount of sulfuric acid (or sulfur or pyrite) to evenly mix, boiling under 150 DEG C-900 DEGC, roasting for 1-5hours, immersing in water for 1-10 hours under indoor temperature which is below 95 DEG C, and getting nickel sulfate and cobalt sulfate solution through filtering, wherein leaching ratio of nickel can reach95%, leaching ratio of cobalt can reach90%, and meanwhile, tailings which are produced can be sold as iron concentrate through processing. An acidification roasting technique can adopt a boiling furnace, and can also adopt other various heating kilns, sulfur dioxide and sulfur trioxide which are produced can be used to prepare sulfuric acid, thereby lowering acid consumption, and sulfuric acid is consumed by iron which is more than 90%. The technique has the advantages of high nickel-cobal leaching ratio, low acid consumption, environmental friendly, easy scale, simple operation, stable equipment operation, low equipment maintenance cost and the like, which opens a new approach for extracting metal nickel-cobal from iron nickel ores.
Description
Technical field
The invention belongs to the Non-ferrous Metallurgy field, particularly relate to the method that irony nickel minerals from red soil nickel ore extracts metallic nickel cobalt and acid exhaust.
Background technology
Nickel resources is national strategic resource in short supply, and about 23,000,000,000 tons of nickel minerals reserves have been verified in the whole world, and the nickel total amount is approximately 2.2 hundred million tons, and wherein red soil nickel ore is about 12,600,000,000 tons, and nickel content is about 1.6 hundred million tons, accounts for 70% of nickel minerals total resources.
The rough segmentation of known exploitation red soil nickel ore technology is that pyrogenic process, wet method and fiery wet method are in conjunction with three classes.Pyrometallurgical smelting process mainly is to produce grain nickel, melting ferronickel and melting nickel matte.Wet method smelting process mainly is a pressurized acid leaching.Fire wet method combined process mainly is that reducing roasting-normal pressure ammonia soaks and emanates-reducing roasting-ore dressing.
Canada's method grace. breathe out Bash and introduced under high temperature and pressure and leached nickel-bearing laterite with sulfuric acid in " external metal ore dressing " the 19th phase in 1998.Be dissolved in the sulfuric acid though contain the Indian red of a large amount of laterite, at high temperature ferric ion aquation precipitated iron oxide compound and generation acid.Ah's (Moa) storehouse class laterite reclaims nickel from being arranged in not with the vertical autoclave that is lined with acid resisting brick during with 4000kPa at 250 ℃.The pressurized acid leaching red soil nickel ore has advantages such as leaching yield height, time weak point, and shortcoming is: facility investment is big, equipment requirements is high; High to containing the high ore deposit consumption acid of magnesium, to handling out low-grade red soil nickel ore, the cost height, so pressurized acid leaching, to the ingredient requirement height, acid leaching process is suitable for handling the nickel oxide ore of low Mg content, and the too high consumption that can increase acid of Mg content improves running cost in the ore, also can bring influence to technological process.
He Huanhua has set forth the factory that pyrogenic process wet method process combined is handled nickel oxide in " China YouSe metallurgy " the 6th phase in 2004, has only the smeltery, big rivers and mountains (oyama Smelter) of metallurgical (Nippon Yakim) company of Japan to use this technology at present in the world.Process is: raw ore is levigate and fine coal mixing briquetting (whether adding the segregation chlorizating agent need further examine), and ore dressing (gravity treatment and magnetic separation) output Rhometal product is carried out in high temperature reduction roasting after the nodulizing drying after the levigate pulp of roasted ore.The maximum characteristics of this technology are that production cost is low, and 85% energy consumption provides (ton ore deposit consumption coal 160～180kg) by coal.(80% energy consumption is an electric energy, and ton ore deposit power consumption 560～600kWh) is compared, and the former energy consumption only is the latter's about 30% with electrosmelting.The subject matter of this technology is that fine coal effectively mixes with ore and the stable control of reducing roasting temperature, often makes the technical indicator instability because of these problems.But from energy-conservation, low-cost and be suitable for handling the angle of low-grade nickel oxide ore resource, this process value gets further to be studied and improved and promotes.Muscovite researchist has also studied segregation roasting-flotation (or magnetic separation) art breading Ural nickel oxide ore, thinks that it is the present unique nickel oxide ore that can handle any kind, and energy consumption and the lower method of tooling cost.
Along with petering out of nickel sulfide ore resource, the exploitation of red soil nickel ore has become global focus.The treatment process of red soil nickel ore is mainly electrosmelting ferronickel and nickel matte, pressurization or normal pressure acidleach, reduction ammonia-leaching and segregation ore dressing at present both at home and abroad.Relatively comprehensive, electrosmelting ferronickel and nickel matte belong to highly energy-consuming technology; The acid consumption was big when high magnesium ore deposit was handled in acidleach, and the reduction ammonia-leaching environmental protection pressure is big, and there are problems such as hydrogenchloride pollution in segregation-ore dressing.
Summary of the invention the present invention is intended to overcome the defective that above-mentioned technology exists, provide a kind of acidizing fired-water logging extracts the method for metallic nickel and acid exhaust from the irony nickel minerals.Characteristics such as that this method has is simple to operate, stable equipment operation, overhaul of the equipments is convenient, production efficiency is high, nickel cobalt leaching yield height, production time are short.In addition, the required in process of production sulfuric acid of present technique can recycle, and the heat of the generation of sulfur burning can also reduce the required energy consumption of roasting.
The present invention finishes according to the following steps: the irony nickel minerals through broken thin, add a certain amount of vitriol oil (or sulphur or pyrite) mixing, roasting, water logging, filtration and can obtain single nickel salt, cobalt sulfate solution, sulfurous gas that is produced and sulphur trioxide can be used for preparing sulfuric acid, the slag that is produced can be used as the iron ore concentrate sale through handling, and has the potential prospects for commercial application.
It is characterized in that:
(1) ore need break carefully, and granularity is-400 orders～8mm.
(2) acid is 50～98% sulfuric acid, and the vitriolic consumption is 1～10 times of theoretical consumption of metallic element in the ore deposit.
(3) sulphur or pyritous consumption are 1～10 times of theoretical consumption of metallic element in the ore deposit.
(4) roasting apparatus can be fluidizing furnace or other various kilns that are used to heat.
(5) sulfurous gas of Chan Shenging can be used for preparing sulfuric acid, thereby sulfuric acid can be reused, and reduces the acid consumption.
(6) acidizing fired temperature is controlled at 150～900 ℃, time 1～5h.
(7) but calcining matter dry levigate after direct filtration or briquetting filter, the diameter of group is 5～30mm.
(8) water soaking temperature is 85 ℃～95 ℃ of room temperatures, and the time is 1～10 hour, and the nickel leaching yield is greater than 95%, and cobalt leaches filter greater than 90%.
(9) leached mud can be used as the iron ore concentrate sale through handling.
The drawing explanation
Fig. 1 is a process flow sheet of the present invention.
Embodiment
The chemical ingredients of irony nickel minerals is as follows:
The chemical analysis results of main ingredient in the table one irony nickel minerals
| Element | Ni | Co | Fe | Cr | Mn | Mg | Ca |
| Content % | 1.08 | 0.077 | 30.82 | 0.3 | 0.01 | 8.53 | 4.06 |
The irony nickel minerals through broken thin, add a certain amount of vitriol oil (or sulphur or pyrite) mixing, roasting, water logging, filtration and can obtain single nickel salt, cobalt sulfate solution, sulfurous gas that is produced and sulphur trioxide can be used for preparing sulfuric acid, the slag that is produced can be used as the iron ore concentrate sale through handling, and has the potential prospects for commercial application.
It is characterized in that:
(1) ore need break carefully, and granularity is-400 orders～8mm.
(2) acid is 50～98% sulfuric acid, and the vitriolic consumption is 1～10 times of theoretical consumption of metallic element in the ore deposit.
(3) sulphur or pyritous consumption are 1～10 times of theoretical consumption of metallic element in the ore deposit.
(4) roasting apparatus can be fluidizing furnace or other various kilns that are used to heat.
(5) sulfurous gas of Chan Shenging can be used for preparing sulfuric acid, thereby sulfuric acid can be reused, and reduces the acid consumption.
(6) acidizing fired temperature is controlled at 150～900 ℃, time 1～5h.
(7) but calcining matter dry levigate after direct filtration or briquetting filter, the diameter of group is 5～30mm.
(8) water soaking temperature is room temperature～95 ℃, and the time is 1～10 hour, and the nickel leaching yield is greater than 95%, and cobalt leaches filter greater than 90%.
(9) leached mud can be used as the iron ore concentrate sale through handling.
Embodiment 1:
Irony nickel minerals 10Kg, break and carefully account for 75% to-200 orders, add the raw ore element theory and consume 1.5 times of mixings of sulfuric acid amount, at 150 ℃ of following fluidized bed roasting 1h, calcining matter is made the pelletizing that diameter is 5mm, water logging 1h when temperature is room temperature, and the leaching yield of nickel is 50%, the leaching yield of cobalt is 35%, and the leaching yield of iron is 50%.
Embodiment 2:
Irony nickel minerals 10Kg, break and carefully account for 75% to-400 orders, add the raw ore element theory and consume 10 times of mixings of sulfuric acid amount, at 800 ℃ of following fluidized bed roasting 3h, calcining matter is made the pelletizing that diameter is 15mm, water logging 10h when temperature is 45 ℃, and the leaching yield of nickel is 95%, the leaching yield of cobalt is 90%, and the leaching yield of iron is 4.6%.
Embodiment 3:
Irony nickel minerals 10Kg, broken carefully account for 75% to-8mm, add the raw ore element theory and consume 5 times of mixings of sulfuric acid amount, at 900 ℃ of following fluidized bed roasting 5h, calcining matter is made the pelletizing that diameter is 30mm, water logging 5h when temperature is 95 ℃, and the leaching yield of nickel is 75%, the leaching yield of cobalt is 55%, and the leaching yield of iron is 10%.
Embodiment 4:
Irony nickel minerals 10Kg breaks and carefully accounts for 75% to-200 orders, adds 5 times of mixings that the raw ore element theory consumes sulfuric acid amount, at 700 ℃ of following fluidized bed roasting 3h, water logging 3h when temperature is 15 ℃, the leaching yield of nickel is 85%, the leaching yield of cobalt is 80%, and the leaching yield of iron is 16%.
Embodiment 5:
Irony nickel minerals 10Kg breaks and carefully accounts for 75% to-40 orders, adds 5 times of mixings that the raw ore element theory consumes sulfuric acid amount, at 800 ℃ of following fluidized bed roasting 5h, water logging 5h when temperature is 95 ℃, the leaching yield of nickel is 95%, the leaching yield of cobalt is 55%, and the leaching yield of iron is 10%.
Claims (6)
1, a kind of method of from the irony nickel minerals, extracting the metallic nickel cobalt, it is characterized in that finishing according to the following steps: the irony nickel minerals through broken thin, add a certain amount of vitriol oil (or sulphur or pyrite) mixing, roasting, water logging, filtration and can obtain single nickel salt, cobalt sulfate solution and tailings, the treated iron ore concentrate that can be used as of tailings is sold, and sulfurous gas that is produced and sulphur trioxide can be used for preparing sulfuric acid.
2, according to claims 1 described method, it is characterized in that: described irony nickel minerals is-400 orders～8mm through broken thin granularity.
3, according to claims 1 described method, it is characterized in that: the described vitriol oil is 50～98% sulfuric acid, and the vitriolic consumption is 1～10 times of theoretical consumption of metallic element in the ore deposit; Described sulphur or pyritous consumption are 1～10 times of theoretical consumption of metallic element in the ore deposit.
4, according to claims 1 described method, it is characterized in that: described roasting apparatus can be fluidizing furnace or other kilns that can be used for heating.
5, according to claims 1 described method, it is characterized in that: described acidizing fired temperature is controlled at 150～900 ℃, time 1～5h, but calcining matter dry levigate after direct filtration or briquetting filter, the diameter of group is 5～30mm.
6, according to claims 1 described method, it is characterized in that: described water soaking temperature is 15 ℃～90 ℃, and the time is 1～10 hour, and the nickel leaching yield is greater than 95%, and cobalt leaches filter greater than 90%.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220483A (en) * | 2011-06-08 | 2011-10-19 | 广西银亿科技矿冶有限公司 | Two-stage roasting treatment method for laterite nickel ore |
| CN102268537A (en) * | 2011-08-15 | 2011-12-07 | 广西银亿科技矿冶有限公司 | Method for extracting cobalt and nickel from laterite-nickel ore |
| CN102345019A (en) * | 2011-10-25 | 2012-02-08 | 北京矿冶研究总院 | Method for treating brown iron type laterite-nickel ore |
| CN102345018A (en) * | 2011-10-25 | 2012-02-08 | 北京矿冶研究总院 | Method for treating nickel oxide ore |
| CN102912137A (en) * | 2012-09-29 | 2013-02-06 | 北京工业大学 | Method for recovering cobalt and nickel from waste iron nickel cobalt alloy |
| CN103088210A (en) * | 2013-01-18 | 2013-05-08 | 中南大学 | Method for selectively leaching nickel and molybdenum from nickel-molybdenum ore |
| CN103572056A (en) * | 2012-08-09 | 2014-02-12 | 上海中河金属加工有限公司 | Technology for recycling valuable metals in laterite-nickel ores by sulfidization method and producing acid |
| CN103620065A (en) * | 2011-11-09 | 2014-03-05 | 国立大学法人九州大学 | Cobalt extraction method |
| CN103710534A (en) * | 2013-12-27 | 2014-04-09 | 贵州华桂钼镍股份有限公司 | Oxidative decomposition method of nickel-molybdenum ores |
| EP2714950A1 (en) * | 2011-06-03 | 2014-04-09 | Vale S.A. | Selective base metals leaching from laterite ores |
| CN103952539A (en) * | 2014-04-24 | 2014-07-30 | 中国恩菲工程技术有限公司 | Laterite ore roasting system |
| CN104630465A (en) * | 2014-12-31 | 2015-05-20 | 金川集团股份有限公司 | Method for extracting nickel and cobalt from leaching solution obtained by normal-pressure acid leaching of laterite-nickel ore |
| CN105112676A (en) * | 2015-09-09 | 2015-12-02 | 中南大学 | Method for recovering iron in fayalite metallurgy slag through roasting of iron pyrite |
| CN105392907A (en) * | 2012-07-23 | 2016-03-09 | 淡水河谷公司 | Recovery of base metals from sulphide ores and concentrates |
| CN105907949A (en) * | 2016-05-14 | 2016-08-31 | 北京矿冶研究总院 | Novel process for comprehensively recovering nickel, cobalt and iron from laterite-nickel ore through low-temperature acidification and acidolysis |
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| CN114182100A (en) * | 2021-12-14 | 2022-03-15 | 广西银亿高新技术研发有限公司 | Method for efficiently separating nickel and iron from nickel-iron alloy |
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| CN101255494B (en) * | 2008-04-11 | 2010-06-02 | 中南大学 | Method for leaching nickel-cobalt from low-grade laterite nickel ore |
| CN101338374A (en) * | 2008-05-22 | 2009-01-07 | 中南大学 | Process for extracting nickel and cobalt from laterite-nickel ore |
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- 2008-03-18 CN CN200810058187A patent/CN100582264C/en not_active Expired - Fee Related
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| EP2714950A1 (en) * | 2011-06-03 | 2014-04-09 | Vale S.A. | Selective base metals leaching from laterite ores |
| JP2015510540A (en) * | 2011-06-03 | 2015-04-09 | ヴァーレ、ソシエダージ、アノニマＶａｌｅ Ｓ．Ａ． | Selective base metal leaching from laterite ores |
| CN102220483A (en) * | 2011-06-08 | 2011-10-19 | 广西银亿科技矿冶有限公司 | Two-stage roasting treatment method for laterite nickel ore |
| CN102268537A (en) * | 2011-08-15 | 2011-12-07 | 广西银亿科技矿冶有限公司 | Method for extracting cobalt and nickel from laterite-nickel ore |
| CN102345019A (en) * | 2011-10-25 | 2012-02-08 | 北京矿冶研究总院 | Method for treating brown iron type laterite-nickel ore |
| CN102345018A (en) * | 2011-10-25 | 2012-02-08 | 北京矿冶研究总院 | Method for treating nickel oxide ore |
| CN102345018B (en) * | 2011-10-25 | 2013-08-07 | 北京矿冶研究总院 | Method for treating nickel oxide ore |
| CN103620065B (en) * | 2011-11-09 | 2015-04-29 | 国立大学法人九州大学 | Cobalt extraction method |
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| CN104630465A (en) * | 2014-12-31 | 2015-05-20 | 金川集团股份有限公司 | Method for extracting nickel and cobalt from leaching solution obtained by normal-pressure acid leaching of laterite-nickel ore |
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