CN101643859B - Process method for separating and purifying cobalt solution by extraction chromatography - Google Patents

Process method for separating and purifying cobalt solution by extraction chromatography Download PDF

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Publication number
CN101643859B
CN101643859B CN2008101180650A CN200810118065A CN101643859B CN 101643859 B CN101643859 B CN 101643859B CN 2008101180650 A CN2008101180650 A CN 2008101180650A CN 200810118065 A CN200810118065 A CN 200810118065A CN 101643859 B CN101643859 B CN 101643859B
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cobalt
leacheate
extraction
solution
purifying
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CN101643859A (en
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陈松
张力
郎书玲
罗岁斌
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GRINM Resources and Environment Technology Co Ltd
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Beijing General Research Institute for Non Ferrous Metals
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Abstract

The invention discloses a process method for separating and purifying cobalt solution by extraction chromatography, which comprises the following steps that: the cobalt solution is extracted by a chromatographic column; the extracted cobalt solution is leached by a buffer system; and strip liquor is subjected to leaching-concentrating to form the high-purity cobalt solution, wherein the leacheate leached by the buffer system is HAc-NaAc buffer solution of which the pH value is between 2 and 3; the buffer leacheate is utilized to leach nickel in a P507 extraction and leaching resin column to the water phase of the leacheate; and the flow rate of the leacheate is 1.0 to 1.5 times per hour of the void volume of the chromatographic column. The P507 extraction chromatography combines the high selectivity of a liquid-liquid extraction method and the multistage property of an ion exchange method, strengthens the capability of purifying the cobalt solution and has the characteristics of simple process flow, easy operation, high equipment capacity, less investment and low consumption of chemical materials. The extraction chromatographic process adopts the HAc-NaAc buffer leaching system, so the control on the pH value in the leaching process is ensured, the leaching efficiency and the recovery efficiency of cobalt are improved, the quality of a product is high and stable, and the purity of the final product of metal cobalt is above 4N.

Description

The processing method of separating and purifying cobalt solution by extraction chromatography
Technical field
The present invention relates to 2-ethylhexyl phosphoric acid-2-(ethyl hexyl) ester (HEHEHP, P507, PC-88A) is the processing method that extraction agent adopts buffering drip washing system to obtain producing high-purity cobalt solution in extraction chromatography partition method cobalt solution by purifying process.
Background technology
The key of preparation high-purity cobalt is the deep purifying of cobalt liquor, particularly to make the content of nickel in the cobalt liquor less than 10ppm, cobalt liquor after the purification obtains high-purity negative electrode cobalt through electrodeposition, more high-purity negative electrode cobalt is obtained the high-purity cobalt ingot of purity greater than 4N through vacuum melting.
The purifying method of cobalt liquor mainly contains chemical precipitation method, ion exchange method and solvent extration.But these methods are difficult to prepare the high-purity cobalt solution of nickel content less than 10ppm, even carry out the degree of depth separation that the separation of multistage number also is difficult to realize cobalt nickel, cobalt copper.
Chromes have the high selectivity of extraction agent in the liquid-liquid extraction, have the multistage property of ion exchange method again, on the approaching element of separating property good performance are arranged, and therefore are subjected to increasing attention in hydrometallurgy.
Because the extracting and purifying process of cobalt liquor has strict requirement to the pH value, in lessivation, must strictly control pH value in the post, otherwise will have a strong impact on separating effect, and separation efficiency is reduced especially.And the chromes separating technology that adopts at present, the cobalt liquor of certain pH value commonly used or sulfuric acid, hydrochloric acid soln by continuous drip washing load extration resin, are realized the control of the pH value in the coupled columns as leacheate.But problems such as this technology exists still that the control of pH value is difficult in the post, efficient is low and the direct yield of cobalt is low become one of principal element that influences its large-scale industrial application.
Summary of the invention
The purpose of this invention is to provide a kind of technology that cushions the drip-rinsing process cobalt solution by purifying, this technical process is simple, easy to operate; Equipment capacity is big, invests for a short time, and the characteristics that the consumption of chemical materials is little, this technology also make the controlled of lessivation pH value, have improved the direct yield of elution efficiency and cobalt, quality product height, stable, and the purity of the finished product cobalt metal reaches more than the 4N.
For reaching above-mentioned goal of the invention, the present invention by the following technical solutions: whole process of the present invention will be passed through three phases, and [1] chromatograph column extracting cobalt liquor, [2] buffer system drip washing [3] leacheate concentrate and obtain high-purity cobalt solution.
The leacheate of described buffer system drip washing is that the pH value is 2~3 HAc-NaAc buffered soln, with the buffering leacheate leacheate aqueous phase is arrived in the nickel drip washing in the P507 extration resin post, and the flow velocity of leacheate is 1.0~1.5 times/h of chromatograph column void volume.
The length-to-diameter ratio of described chromatograph post is 10/1~5/1.
The high-purity cobalt solution that obtains after the extraction chromatography purification separation is through concentrating rose vitriol or the cobalt chloride solution that obtains containing cobalt 50~160 grams per liters, and the pH value is 2~4.
The purification that the isolating method of P507 extraction chromatography is carried out cobalt liquor is particularly in the degree of depth sepn process of cobalt nickel, cobalt copper, adopt buffering drip washing system, the pH value of guaranteeing lessivation obtains strict and stable control, improves elution efficiency, obtains qualified high-purity solutions.Refining obtains high-purity negative electrode cobalt (electrodeposited cobalt) through electrodeposition for this solution, and electrodeposited cobalt is carried out vacuum melting again and further purified, and obtains the high pure metal cobalt of purity greater than 4N.
With P507 is extraction agent, and macroporous adsorbent resin is a support, and this technology adopts the regeneration of P507 extraction agent absorption preparation P507 extration resin, buffer system drip washing, back extraction cobalt, extration resin successively.
Adopt the mode of saponification absorption to be adsorbed on the macroporous adsorbent resin P507 extraction agent, prepare 30%~80% (weight percentage, down together) P507 extration resin.
The cobalt feed liquid is the muriate or the sulfate liquor of cobalt, wherein the total concn of cobalt is 5~150 grams per liters, leacheate is the HAc-NaAc buffered soln of pH value 2~3, back extraction cobalt leacheate is that free acidity is 0.5~4 mol sulphuric acid soln or hydrochloric acid soln, and chromatograph resin regeneration liquid is the hydrochloric acid soln of 6 mol.The high-purity cobalt solution that obtains after the extraction chromatography purification separation is through concentrating rose vitriol or the cobalt chloride solution that obtains containing cobalt 50~160 grams per liters, and the pH value is 2~4.Through current density is 300A/m 2Constant-current electrolysis, 30~60 ℃ of temperature, titanium is coated with the ruthenium plate and does anode, the titanium plate is done negative electrode, deposition obtains electrodeposition negative electrode cobalt on negative electrode.Electrodeposition negative electrode cobalt obtains the high-purity cobalt ingot of purity greater than 4N through vacuum melting, and smelting temperature is greater than 1495 ℃, vacuum tightness 10 -3~10Pa.
The preparation method of chromes isolation of purified cobalt liquor raw material is that those skilled in the art are in common knowledge.First method is that technical grade or reagent of sulfuric acid cobalt or cobalt chloride are dissolved in the water, adds hydrochloric acid or sulfuric acid and adjusts the pH value; Second method is with cobalt metal or cobalt powder adds quantitative hydrochloric acid or sulfuric acid dissolution obtains the cobalt feed liquid; The third method is that the metal or alloy that will contain cobalt adds quantitative hydrochloric acid or sulfuric acid dissolution obtains the cobalt feed liquid.Rose vitriol that the feed liquid that obtains is or cobalt chloride solution obtain to such an extent that the solution cobalt contents is 5~150 grams per liters.
The preparation method of the P507 extration resin in the chromes cobalt solution by purifying process is to use macroporous adsorbent resin, preferably oily matter there is higher optionally macroporous adsorbent resin (market is on sale), under stirring condition, the P507 extraction agent is adsorbed, prepare the P507 extration resin of desired content.
The factor that influences cobalts such as cobalt nickel, cobalt copper, cobalt zinc and other separation of metal ions in the system of chromes isolation of purified cobalt liquor in the present invention is a lot, they are the length-to-diameter ratio of extracting chromatographic column, the particle diameter and the porosity size of support, the pH value and the efflux volume of leacheate; The concentration of P507 extraction agent; Factors such as the concentration of cobalt and other metal ion and acidity in the feed liquid.
When other factors are fixed, along with the increase of extraction agent P507 concentration, extracting and separating factor beta value also increases, if the concentration of extraction agent P507 is less than 30%, loading capacity is little, and production capacity is low; The concentration of extraction agent P507 is greater than 80%, and the support adsorptive capacity is saturated, so the concentration of extraction agent P507 is 30~80% scope.
The particle diameter of support isolation of purified to cobalt liquor in 70~150 purpose scopes does not significantly influence.When particle diameter during less than 70 orders, the flow velocity of extracting chromatographic column is fast, the flow of solution state of wayward post; When particle diameter during greater than 150 orders, the flow velocity of extracting chromatographic column is slow, and sepn process is long.Therefore the particle diameter of support is advisable in 70~150 purpose scopes.
When the total concn of cobalt was lower than 5 grams per liters in the feed liquid, the feed liquid treatment capacity was bigger, and it is big to consume total acid content; When the total concn of cobalt is higher than 150 grams per liters in the feed liquid, cobalt and other foreign metal ionic separation factor are reduced, in order to guarantee cobalt liquor isolation of purified effect preferably, the concentration of cobalt is at 5~150 grams per liters in the feed liquid, the pH value is 4~5, and other foreign metal total ion concentration is good less than 1 grams per liter.
Leacheate is that the pH value is 2~3 HAc-NaAc buffered soln, and the flow velocity of leacheate is 1.0~1.5 times/h of chromatograph column void volume.
Used strip liquor is 0.5~4 mol hydrochloric acid or sulphuric acid soln in back extraction cobalt liquid.
The deironing of P507 extration resin post, zinc and the used leacheate of regenerating are that acidity is 6 mol hydrochloric acid solns.
During chromes extracting and separating cobalt solution by purifying, the working method of an extracting chromatographic column is:
At first the P507 extration resin is packed in the extracting chromatographic column by those skilled in the art's method in common knowledge; P507 extration resin post feeds in raw material with the cobalt liquor extraction then, makes extraction agent P507 and cobalt carry out extractive reaction;
The P507 extration resin post of second step to the extraction cobalt carries out drip washing, with the buffering leacheate leacheate aqueous phase is arrived in the nickel drip washing in the P507 extration resin post, cobalt is still stayed in the extraction agent of P507 extration resin, with sour leacheate the leacheate aqueous phase is arrived in the cobalt drip washing in the P507 extration resin post again, obtain the high-purity cobalt salts solution, at last the P507 extration resin post of metallic impurity such as iron content, zinc is carried out drip washing, regeneration with 6N hydrochloric acid, the resin after the regeneration continues to recycle.The temperature of carrying out above-mentioned all operations is between 10~40 degrees centigrade.
The high-purity cobalt salts solution that obtains obtains electrodeposition negative electrode cobalt with concentrated, the electrolytic deposition of method warp that those skilled in the art all know.
The electrodeposition negative electrode cobalt that obtains carries out vacuum melting, obtains the high-purity cobalt of purity greater than 4N.
The invention has the advantages that:
1, P507 extraction chromatography method of the present invention combines the highly selective of liquid-liquid extraction method and the multistage property of ion exchange method, has strengthened the detergent power of cobalt liquor and to have a technical process simple, easy to operate; Equipment capacity is big, invest little, the characteristics that the consumption of chemical materials is little; Chromes make the equipment of whole extraction and separation technology be easy to sealing simultaneously, reduce the irritating smell of the hydrochloric acid soln generation of high density, have improved Working environment.
2, adopt HAc-NaAc buffering drip washing system in the extraction chromatography technology of the present invention, guaranteed the control of lessivation pH value, improved the direct yield of elution efficiency and cobalt, quality product height, stable, the purity of the finished product cobalt metal reaches more than the 4N.
Following indefiniteness embodiment is just in order to further specify the present invention, rather than as limiting the scope of the invention, protection scope of the present invention is determined by claim.
Description of drawings
Fig. 1: process flow diagram
Among Fig. 1,1 for the raw material cobalt liquor carries out P507 extraction chromatography separation circuit, and 2 is damping fluid drip washing operation, wherein, the leacheate otherwise processed 3 is acid solution drip washing (back extraction operation), 4, for enrichment process, concentrate after electrodeposition operation 5, vacuum melting operation 6 obtain high-purity cobalt.7, be the resin regeneration operation with the drip washing of 6N hydrochloric acid, the resin after the regeneration returns the P507 absorption process.
Embodiment
Embodiment 1
Get 10 kilograms of aqueous macroporous adsorbent resins and (buy trade mark HPD-100, its correlation parameter: 1, granularity: (particle diameter 0.3-1.2mm) 〉=90%) from market; 2, mean pore size: 85-90 ° A; Specific surface 650-700m 2/ g; Absorption flow velocity: 1-4BV/h; Desorb flow velocity: 0.6-2BV/h; Strippant: ethanol or aqueous ethanolic solution; Strippant consumption: 2-3BV) put into the aqueous solution, the P507 extraction agent that adds 2 kilograms, under stirring condition, carry out adsorption treatment, prepare the extration resin of 34%P507 after the filtration, the diameter of packing into is 80mm, length is the synthetic glass post of 850mm, is assembled into P507 extration resin post, and its void volume is about about 400ml after measured.
Add 5 liters of cobalt chloride feed liquids, wherein cobalt concentration is 60 grams per liters, and the pH value of feed liquid is 4.5, P507 extration resin post is carried out drip washing become 3.5 back end until the pH value of drenching fluid from 1.7.
Be 3 HAc-NaAc buffered soln P507 extration resin with the pH value then as drip washing load cobalt, the control flow velocity is 1.5 times of volume/h of chromatograph column void volume, when to drench the fluid volume be 3 times of chromatograph column void volume, using acidity instead was the cobalt ion that adsorbs in the rapid wash-out chromatograph of the 2 mol hydrochloric acid solns post.
To the drip washing of regenerating of P507 extration resin post, regenerated liquid is 6 mol hydrochloric acid solns at last, when to drench the fluid volume be 4 times of chromatograph column void volume, uses deionized water drip washing instead.Finish when fluid pH value is 5 when drenching.
The cobalt chloride solution of collecting is concentrated to 100 grams per liters, carries out electrolytic deposition, and the electrodeposited cobalt that negative electrode obtains obtains the high-purity cobalt ingot through vacuum melting, and the purity of cobalt is more than the 6N through the glow discharge mass spectrometry analysis.
Embodiment 2
Experimental working technique is with embodiment 1.Preparation 50%P507 extration resin.Add 5 liters of rose vitriol feed liquids, wherein cobalt concentration is 80 grams per liters, and the pH value of feed liquid is 4, P507 extration resin post is carried out drip washing become 3 until the pH value of drenching fluid from 1.7.
Be 3 HAc-NaAc buffered soln drip washing load P 507 extration resins then with the pH value, the control flow velocity is 1.2 times/h of chromatograph column void volume, when to drench the fluid volume be 4 times of chromatograph column void volume, using acidity instead was the cobalt ion of the rapid wash-out chromatograph of 1 mol sulphuric acid soln post absorption.
To the drip washing of regenerating of P507 extration resin post, regenerated liquid is 6 mol hydrochloric acid solns at last, when to drench the fluid volume be 4 times of chromatograph column void volume, uses deionized water drip washing instead.Finish when fluid pH value is 5 when drenching.
The cobalt sulfate solution of collecting is concentrated to more than 90 grams per liters, carries out electrolytic deposition, and the electrodeposited cobalt that negative electrode obtains obtains the high-purity cobalt ingot through vacuum melting, and the purity of cobalt is more than the 4N through spectroscopic analysis.

Claims (4)

1. the processing method of a separating and purifying cobalt solution by extraction chromatography is characterized in that:
It comprises following operation:
(1) chromatograph column extracting cobalt feed liquid: the cobalt feed liquid is the muriate or the sulfate liquor of cobalt, the total concn of cobalt is 5~150 grams per liters in the feed liquid, the pH value is 4-5, other foreign metal total ion concentration is less than 1 grams per liter, the concentration of extraction agent P507 is 30-80%, the length-to-diameter ratio of chromatograph post is 10/1~5/1, and the particle diameter of support is in 70-150 purpose scope;
(2) buffer system drip washing: the leacheate of described buffer system drip washing is that the pH value is 2~3 HAc-NaAc buffered soln, with the buffering leacheate leacheate aqueous phase is arrived in the nickel drip washing in the P507 extration resin post, the flow velocity of leacheate is 1.0~1.5 times/h of chromatograph column void volume;
(3) the strip liquor drip washing-concentrated high-purity cobalt solution that obtains.
2. the processing method of a kind of separating and purifying cobalt solution by extraction chromatography according to claim 1, it is characterized in that: the back extraction leacheate is that free acidity is 0.5~4 mol sulphuric acid soln or hydrochloric acid soln.
3. the processing method of a kind of separating and purifying cobalt solution by extraction chromatography according to claim 1 and 2, it is characterized in that: the high-purity cobalt solution that obtains after the extraction chromatography purification separation is through concentrating rose vitriol or the cobalt chloride solution that obtains containing cobalt 50~160 grams per liters, and the pH value is 2-4.
4. the processing method of a kind of separating and purifying cobalt solution by extraction chromatography according to claim 1 and 2, it is characterized in that: the extration resin after the strip liquor drip washing carries out manipulation of regeneration.
CN2008101180650A 2008-08-07 2008-08-07 Process method for separating and purifying cobalt solution by extraction chromatography Expired - Fee Related CN101643859B (en)

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Publication number Priority date Publication date Assignee Title
CN102382981A (en) * 2011-11-01 2012-03-21 北京有色金属研究总院 Method for purifying iron solution by adopting extraction chromatography
CN106811598A (en) * 2015-11-30 2017-06-09 北京有色金属研究总院 A kind of low content nickel cobalt biochemical lixivium high-efficient purification process for separating and purifying
CN106629809B (en) * 2016-12-20 2022-09-16 攀枝花市精研科技有限公司 Method for purifying coarse scandium oxide
CN108793323B (en) * 2018-07-03 2022-04-01 江西核工业兴中新材料有限公司 Process for recovering cobalt metal by treating basic cobalt carbonate industrial wastewater by comprehensive environment-friendly method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680098A (en) * 1985-03-18 1987-07-14 Amoco Corporation Aqueous recovery of cobalt or cobalt and manganese from solution also containing oxygenated aromatic compounds
US4954466A (en) * 1989-11-30 1990-09-04 Monsanto Company Recovery of cobalt catalyst values
CN1861817A (en) * 2005-05-13 2006-11-15 河南科技大学 Tech. of extracting metallic cobait from magnetic-iron ore tailing slag
CN101094926A (en) * 2004-12-30 2007-12-26 Bhp比利通Ssm技术有限公司 Extraction of nickel and cobalt from a resin eluate stream
CN101148698A (en) * 2007-09-30 2008-03-26 浙江华友钴镍材料有限公司 Extraction method for removing calcium and magnesium from copper-cobalt ore leachate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680098A (en) * 1985-03-18 1987-07-14 Amoco Corporation Aqueous recovery of cobalt or cobalt and manganese from solution also containing oxygenated aromatic compounds
US4954466A (en) * 1989-11-30 1990-09-04 Monsanto Company Recovery of cobalt catalyst values
CN101094926A (en) * 2004-12-30 2007-12-26 Bhp比利通Ssm技术有限公司 Extraction of nickel and cobalt from a resin eluate stream
CN1861817A (en) * 2005-05-13 2006-11-15 河南科技大学 Tech. of extracting metallic cobait from magnetic-iron ore tailing slag
CN101148698A (en) * 2007-09-30 2008-03-26 浙江华友钴镍材料有限公司 Extraction method for removing calcium and magnesium from copper-cobalt ore leachate

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