CN102634658A - Leaching method for associated copper, molybdenum and nickel in coal mine containing scherbinaite - Google Patents
Leaching method for associated copper, molybdenum and nickel in coal mine containing scherbinaite Download PDFInfo
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- CN102634658A CN102634658A CN2012100846891A CN201210084689A CN102634658A CN 102634658 A CN102634658 A CN 102634658A CN 2012100846891 A CN2012100846891 A CN 2012100846891A CN 201210084689 A CN201210084689 A CN 201210084689A CN 102634658 A CN102634658 A CN 102634658A
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Abstract
The invention discloses a leaching method for associated copper, molybdenum and nickel in a coal mine containing scherbinaite. The method is characterized by comprising the steps of crushing the coal mine containing scherbinaite, grinding the coal mine to the required granularity in a wet way, adjusting the mine slurry concentration, then putting the mine slurry into a floatation tank, adding industrial sodium sulfide and ammonium aerofloat butyl into the floatation tank to be stirred, carrying out the floatation to obtain rough floatation concentrate, adding industrial sulphuric acid and sodium chlorate into the rough floatation concentrate, leaching the rough floatation concentrate added with the industrial sulphuric acid and the sodium chlorate at the temperature of 80 DEG C to 95 DEG C for 18-24 hours, carrying out the solid and liquid separation and the washing on the mine slurry after the leaching to obtain a leaching agent containing the copper, the molybdenum and the nickel. The leaching method disclosed by the invention has the following beneficial effects that: (1) the gross of the materials in the leaching process is reduced by utilizing the floatation method to enrich the copper, the molybdenum and the nickel in the coal mine containing scherbinaite; (2) in the wet acid leaching process, the leaching of the copper, the molybdenum and the nickel can be realized at the same time, and the high leaching rates of the copper, the molybdenum and the nickel can be ensured by adding a small amount of oxidant; and the leaching rates of the coal mine containing scherbinaite can respectively reach 60%-70%, 75%-85% and 75%-85%; and (3) the leaching method can favorably realize the comprehensive recycle and utilization of the copper, the molybdenum and the nickel in the coal mine containing scherbinaite.
Description
Technical field
The present invention relates to a kind of leaching method that contains associated metal molybdenum copper nickel in the scherbinaite colliery.
Background technology
Containing the scherbinaite colliery is important the contain vanadium resource of China as the independent deposit exploitation utilization of vanadium, V in the bone coal
2O
5Grade is lower, generally is merely about 1.0%.What the traditional extracting vanadium from stone coal of China adopted is the sodium-salt calcination extract technology, and the main drawback of this technology is that the vanadium leaching yield is low, and the wasting of resources is big, and environmental pollution is serious; Since the last century the nineties, wet method acid immersion technology has obtained attention, and many enterprises adopt wet method acid immersion technology to carry out the leaching and the vanadium product prepn of vanadium, have avoided the topsoil of traditional technology.For many years; It is less that China contains the research of comprehensive utilization of scherbinaite coal resource; Except from bone coal, extracting the vanadium product; Other the approach that utilizes mainly is to utilize the carbonaceous characteristics of bone coal to carry out bone coal generating, utilizes the characteristics that contain silicon magnesium calcium iron aluminium after the vanadium extraction in the waste residue to use it for cement raw material or brickmaking.In fact, the part of China contains has found multiple associated metal element in the scherbinaite coal resource, and metalliferous minerals such as silver, copper, molybdenum, nickel, zinc, lead contain in the scherbinaite coal at some and exist to some extent.If can in reclaiming bone coal, realize the recovery of associated metal element in the process of vanadium simultaneously through suitable technology, then can improve the comprehensive utilization ratio of bone coal resource on the one hand, also can obtain better economic benefit on the other hand.
Summary of the invention
The purpose of this invention is to provide a kind of leaching method that contains associated metal molybdenum copper nickel in the scherbinaite colliery, realize the recovery of vanadium and associated metal mineral by this method, improve the comprehensive utilization of resources benefit.The objective of the invention is to realize through following mode:
A kind of leaching method that contains associated metal molybdenum copper nickel in the scherbinaite colliery is characterized in that carrying out according to the following steps:
(1) broken ore grinding: will contain that the scherbinaite colliery is broken, wet grinding to granularity accounts for 70%~85% less than the grain size content of 0.074mm, the ore grinding pulp density is a mass fraction of solids 60%~75%;
(2) size mixing: after ore grinding was accomplished, adding water, pulp density is adjusted to mass fraction of solids was 25%~40%;
(3) dosing flotation: ore pulp is put into flotation cell; The ratio that in ore pulp, contains scherbinaite colliery and 100g~1000g sodium sulphite in 1000kg adds sodium sulphite and stirs; The ratio that in ore pulp, contains scherbinaite colliery and 200g~1000g butyl ammonium aerofloat in 1000kg then adds butyl ammonium aerofloat and stirs; Bubble is scraped in flotation, obtains the flotation rough concentrate;
(4) leaching of vanadium molybdenum copper nickel: the ratio in 1000kg flotation rough concentrate and 200kg~400kg sulfuric acid and 5kg~30kg VAL-DROP in flotation rough concentrate ore pulp adds technical grade sulfuric acid and technical grade VAL-DROP respectively, leaches 18h~24h down in 80 ℃~95 ℃;
(5) liquid-solid separation: after leaching completion, ore pulp is carried out liquid-solid separation, obtain containing the leach liquor of vanadium, molybdenum, copper and mickel, the leaching yield of vanadium, molybdenum, copper and mickel can reach 60%~70%, 75%~85%, 80%~85% and 75%~85% respectively.
The present invention has following beneficial effect: (1) is carried out enrichment with method for floating to molybdenum, copper, the nickel that contains in the scherbinaite colliery, has reduced to get into the material total amount that leaches operation; (2) in the wet method acid immersion process, realize the leaching of molybdenum, copper, nickel simultaneously, only need to add the small amounts agent to guarantee the higher leaching yield of molybdenum, copper, nickel; (3) resource comprehensive that can realize containing molybdenum, copper, nickel in the scherbinaite colliery is preferably recycled.
Embodiment
Below in conjunction with instance the present invention is described further:
Embodiment 1: sample is taken from the bone coal ore of bone coal ore deposit, sand bar level ground, Lueyang County, Shaanxi Province I ore body, sample multielement analysis such as table 1.
Table 1 sample multielement analysis (%)
Composition | V 2O 5 | Mo | Cu | Ni | Fe | Ca | Al | Si | Mg | K | S |
Massfraction | 0.906 | 0.055 | 0.065 | 0.115 | 5.53 | 6.04 | 6.23 | 23.74 | 2.39 | 2.36 | 0.56 |
The 500g that materialses, carry out the leaching of vanadium in the sample and associated metal molybdenum copper nickel according to the following steps:
(1) broken ore grinding: sample is broken, wet grinding to granularity accounts for 80% less than the grain size content of 0.074mm, and the ore grinding pulp density is a mass fraction of solids 70%;
(2) size mixing: after ore grinding was accomplished, adding water, pulp density is adjusted to mass fraction of solids was 30%;
(3) dosing flotation: ore pulp is put into flotation cell; After adding the 0.25g industrial sodium sulfide and stir 15min in the ratio of 1000kg ore and 500g sodium sulphite; Ratio in 1000kg ore and 600g butyl ammonium aerofloat adds the 0.3g butyl ammonium aerofloat and stirs 10min; Bubble 20min, flotation results such as table 2 are scraped in flotation.
Table 2 flotation results
(4) leaching of vanadium molybdenum copper nickel: the quality of flotation rough concentrate is 337.5g; Ratio in 1000kg flotation rough concentrate and 320kg sulfuric acid and 20kg VAL-DROP; In flotation rough concentrate ore pulp, add 108g technical grade sulfuric acid and 6.75g technical grade VAL-DROP respectively, leach 20h down in 95 ℃;
(5) liquid-solid separation: after leaching completion; Ore pulp is filtered and with 500mL water filter residue washed; Filtrating and washings merge the leach liquor that obtains containing vanadium, molybdenum, copper and mickel, and the leaching yield of vanadium, molybdenum, copper and mickel is respectively 64.5%, 83.8%, 84.5% and 81.0%.
Embodiment 2: sample is taken from the bone coal ore deposit of bone coal ore deposit, sand bar level ground, Lueyang County, Shaanxi Province II ore body, sample multielement analysis such as table 3.
Table 3 sample multielement analysis (%)
Composition | V 2O 5 | Mo | Cu | Ni | Fe | Ca | Al | Si | Mg | K | S |
Massfraction | 0.951 | 0.063 | 0.071 | 0.120 | 5.72 | 6.51 | 6.18 | 22.55 | 2.58 | 2.076 | 0.74 |
The 1000g that materialses, carry out the leaching of vanadium in the sample and associated metal molybdenum copper nickel according to the following steps:
(1) broken ore grinding: sample is broken, wet grinding to granularity accounts for 78.5% less than the grain size content of 0.074mm, and the ore grinding pulp density is a mass fraction of solids 70%;
(2) size mixing: after ore grinding was accomplished, adding water, pulp density is adjusted to mass fraction of solids was 35%;
(3) dosing flotation: ore pulp is put into flotation cell; After adding the 0.8g industrial sodium sulfide and stir 15min in the ratio of 1000kg ore and 800g sodium sulphite; Ratio in 1000kg ore and 700g butyl ammonium aerofloat adds the 0.7g butyl ammonium aerofloat and stirs 15min; Bubble 25min, flotation results such as table 4 are scraped in flotation.
Table 4 flotation results
(4) leaching of vanadium molybdenum copper nickel: the quality of flotation rough concentrate is 700g; Ratio in 1000kg flotation rough concentrate and 300kg sulfuric acid and 25kg VAL-DROP; In flotation rough concentrate ore pulp, add 210g technical grade sulfuric acid and 17.5g technical grade VAL-DROP respectively, leach 24h down in 90 ℃;
(5) liquid-solid separation: after leaching completion; Ore pulp is filtered and with 1000mL water filter residue washed; Filtrating and washings merge the leach liquor that obtains containing vanadium, molybdenum, copper and mickel, and the leaching yield of vanadium, molybdenum, copper and mickel is respectively 69.8%, 82.5%, 83.7% and 78.5%.
Claims (1)
1. leaching method that contains associated metal molybdenum copper nickel in the scherbinaite colliery is characterized in that carrying out according to the following steps:
(1) broken ore grinding: will contain that the scherbinaite colliery is broken, wet grinding to granularity accounts for 70%~85% less than the grain size content of 0.074mm, the ore grinding pulp density is a mass fraction of solids 60%~75%;
(2) size mixing: after ore grinding was accomplished, adding water, pulp density is adjusted to mass fraction of solids was 25%~40%;
(3) dosing flotation: ore pulp is put into flotation cell; The ratio that in ore pulp, contains scherbinaite colliery and 100g~1000g sodium sulphite in 1000kg adds sodium sulphite and stirs; The ratio that in ore pulp, contains scherbinaite colliery and 200g~1000g butyl ammonium aerofloat in 1000kg then adds butyl ammonium aerofloat and stirs; Bubble is scraped in flotation, obtains the flotation rough concentrate;
(4) leaching of vanadium molybdenum copper nickel: the ratio in 1000kg flotation rough concentrate and 200kg~400kg sulfuric acid and 5kg~30kg VAL-DROP in flotation rough concentrate ore pulp adds technical grade sulfuric acid and technical grade VAL-DROP respectively, leaches 18h~24h down in 80 ℃~95 ℃;
(5) liquid-solid separation: after leaching completion, ore pulp is carried out liquid-solid separation, obtain containing the leach liquor of vanadium, molybdenum, copper and mickel.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103789554A (en) * | 2014-03-11 | 2014-05-14 | 中南大学 | Copper-nickel slag step-by-step concentration difference leaching method |
CN104998758A (en) * | 2015-07-09 | 2015-10-28 | 广东省工业技术研究院(广州有色金属研究院) | Ore dressing and magnesium reduction method of copper-nickel sulfide-platinum-group metal ores |
CN105018727A (en) * | 2015-07-30 | 2015-11-04 | 郴州市金贵银业股份有限公司 | Wet process lead, bismuth, cobalt, nickel and molybdenum comprehensive recovery method |
CN105149085A (en) * | 2015-08-06 | 2015-12-16 | 中南大学 | Flotation and acid leaching process for complex low-grade copper oxide ore |
CN105506312A (en) * | 2014-09-23 | 2016-04-20 | 江苏光明新材料有限公司 | Method of separating molybdenum and nickel from high-carbon molybdenum-nickel ore |
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CN101935768A (en) * | 2010-09-16 | 2011-01-05 | 中南大学 | Method for comprehensively recovering carbon from extraction of vanadium from stone coal |
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CN101239740A (en) * | 2008-03-07 | 2008-08-13 | 昆明理工大学 | Method for coproducing vanadium pentoxide from vanadium-containing stone coal ore and fluorite |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103789554A (en) * | 2014-03-11 | 2014-05-14 | 中南大学 | Copper-nickel slag step-by-step concentration difference leaching method |
CN103789554B (en) * | 2014-03-11 | 2015-09-30 | 中南大学 | A kind of substep concentration difference leaching method of copper nickel slag |
CN105506312A (en) * | 2014-09-23 | 2016-04-20 | 江苏光明新材料有限公司 | Method of separating molybdenum and nickel from high-carbon molybdenum-nickel ore |
CN104998758A (en) * | 2015-07-09 | 2015-10-28 | 广东省工业技术研究院(广州有色金属研究院) | Ore dressing and magnesium reduction method of copper-nickel sulfide-platinum-group metal ores |
CN105018727A (en) * | 2015-07-30 | 2015-11-04 | 郴州市金贵银业股份有限公司 | Wet process lead, bismuth, cobalt, nickel and molybdenum comprehensive recovery method |
CN105149085A (en) * | 2015-08-06 | 2015-12-16 | 中南大学 | Flotation and acid leaching process for complex low-grade copper oxide ore |
CN105149085B (en) * | 2015-08-06 | 2017-12-12 | 中南大学 | A kind of flotation acid leaching process of complicated low grade copper oxide ore |
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Application publication date: 20120815 |