CN103361483A - Technology for removing cobalt by dynamic wave chlorine oxidation - Google Patents
Technology for removing cobalt by dynamic wave chlorine oxidation Download PDFInfo
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- CN103361483A CN103361483A CN2013103312693A CN201310331269A CN103361483A CN 103361483 A CN103361483 A CN 103361483A CN 2013103312693 A CN2013103312693 A CN 2013103312693A CN 201310331269 A CN201310331269 A CN 201310331269A CN 103361483 A CN103361483 A CN 103361483A
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Abstract
The invention discloses a technology for removing cobalt by dynamic wave chlorine oxidation. The technology utilizes dynamic wave reaction towers. The technology utilizes three stages of the dynamic wave reaction towers, wherein the primary and secondary dynamic wave reaction towers are cobalt recovery reaction towers and the tertiary dynamic wave reaction tower is a tail gas recovery treatment tower. The technology combines characteristics of dynamic wave and cobalt recovery, utilizes the dynamic wave reaction towers as reactors for a cobalt removal unit, has simple processes, a high automation degree and a high chlorine utilization rate and can produce tail gas directly satisfying the discharge standard.
Description
Technical field
The present invention relates to the Chemical Manufacture technique in the Nonferrous Metallurgical Process, especially relate to a kind of dynamic wave chlorine oxidation that removes in the cobalt production process and remove cobalt technique.
Background technology
Nonferrous metallurgy, smelt such as the scavenging process of nickel electrowinning, nickel cobalt produce in the process such as sepn process contain cobalt liquid, can be described as reaction solution, need in advance cobalt to be removed, reach the purpose of purification liquid and recovery cobalt, generally all adopt chlorine oxidation to remove cobalt, chlorine oxidation is except principal reaction such as equation (1) and (2) of cobalt, at first chlorine is oxidized to the trivalent cobalt ion with divalent cobalt ion, and the trivalent cobalt ion is hydrolytic precipitation under certain pH conditions, thereby reaches the separation of cobalt:
Co
3++OH
-→Co（OH)
3 (2)
Chlorine oxidation has line-blending technique and foam absorbing tower process except the technique of cobalt at present, because the solubleness of chlorine is lower, adopt line-blending technique, need to carry out blended absorbent to chlorine than long pipeline, duct length is general above 150 meters, and need to carry out Venturi design to pipeline and increase assimilation effect, line-blending technique needs the multistage cobalt precipitation tank in term of follow-up cooperation in addition, in order to finish the precipitation of cobalt, so its complex process, flow process is longer, and is difficult to realize fully automatization control; And adopt the foam absorbing tower process, and need tower larger, device structure is complicated, and needs multistage absorption, and cost is higher, and its technique is equally complicated, and level of automation is not high; Existing chlorine oxidation is except cobalt technique, because the limitation of technique self, chlorine utilization is lower, this has caused the waste of chlorine on the one hand, and all be difficult to realize sealing production, situ production is relatively poor, and final waste gas is owing to higher chlorine content on the other hand, and processing needs larger equipment and fund input.
Summary of the invention
The present invention is in order to solve present chlorine oxidation except the problem that exists in the technique of cobalt, a kind of characteristics of producing in conjunction with dynamic wave with except cobalt are provided, with dynamic wave as reactor, be applied to except the cobalt productive unit, its technical process is simple, level of automation is high, and chlorine utilization is high, and the tail gas that produce to produce directly the dynamic wave chlorine oxidation of qualified discharge plant except driller.
To achieve these goals, the present invention is by the following technical solutions: the dynamic wave chlorine oxidation is except cobalt technique, utilize the dynamic wave reaction tower, described dynamic wave chlorine oxidation is except three grades of dynamic waves of cobalt process using, one-level dynamic wave and second motive force ripple reclaim reaction tower as cobalt, three grades of dynamic waves absorb treating column as tail gas, may further comprise the steps:
Step 1, in the storage tank of one-level dynamic wave reaction tower and second motive force ripple reaction tower temperature of reaction being set is 60～70 ℃, and pH is set between 4.0～5.0, and the redox potential value is set as 1000～1100mv;
Enter simultaneously the contrary spray reacting pipe of one-level dynamic wave reaction tower after step 2, liquid chlorine gasify through chlorine gasification bag with reaction solution, both reverse contacts form the foam reactant district;
Step 4, the chlorine that is not absorbed reaction in the first stage tower enters into the contrary spray of second motive force ripple reaction tower reacting pipe, the reaction solution of second motive force ripple is provided by one-level dynamic wave reaction tower, and chlorine and reaction solution reverse contact in the contrary spray of second motive force ripple tower reaction tubes form the foam reactant district;
By alkali lye to chlorine absorption after qualified discharge.
Dynamic wave is a kind of efficient gas-liquid mass transfer (contact) equipment, and it is simple in structure, be difficult for to stop up, and invest lowly, can realize completely automatization on controlling; Chlorine with contain that the cobalt reaction solution is reverse to be contacted, form the foam reactant district, the froth zone of dynamic wave has efficient specific absorption to chlorine, also improved simultaneously the cobalt oxidation speed of reaction, after the reaction solution of process I and II dynamic wave installs filtration after filtration, the cobalt precipitation filter residue that filters enters the filter residue accumulator tank, can do further deep processing after the recovery and process except cobalt, and carry out other reaction except the filtrate after the cobalt can enter into subsequent processing.
As preferably, in the described step 1, temperature control realizes by regulating heating, and pH regulates by adding alkali lye, and redox potential is regulated by changing chlorine flowrate.But measurement and the setting device of reload temperature, pH (potential of hydrogen) value, 0RP (redox potential) value in the dynamic wave reaction tower are with remaining on smoothly carrying out hydrolyzing and precipitating reaction under certain reaction conditions so that contain the cobalt reaction solution.
As preferably, described alkali lye is nickelous carbonate or yellow soda ash.
As preferably, in the described step 6, contain the filtrate after cobalt precipitin reaction liquid filters, recyclable.Carry out other reaction except the filtrate after the cobalt can enter into subsequent processing, for containing the cobalt nickel electrolyte, the filtrate of separation can enter into the nickel electrowinning operation such as reaction solution.
As preferably, in the described step 7, by adding sodium hydroxide lye remaining chlorine is absorbed, tail gas is discharged through blower fan.
Therefore, the present invention has following beneficial effect: (1) technical process is simple, and level of automation is high; (2) chlorine utilization is high; (3) tail gas that produce to produce is qualified discharge directly.
Description of drawings
Fig. 1 is a kind of process schematic representation of the present invention.
Among the figure: 1, chlorine gasification bag 2, reaction solution storage tank 3, one-level dynamic wave reaction tower
4, second motive force ripple reaction tower 5, three grades of dynamic wave tail gas absorbers 6, filtration unit
7, filter residue accumulator tank 8, blower fan
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Embodiment as shown in Figure 1, the dynamic wave chlorine oxidation is except cobalt technique, utilize the dynamic wave reaction tower, the dynamic wave chlorine oxidation is except three grades of dynamic waves of cobalt process using, one-level dynamic wave and second motive force ripple reclaim reaction tower as cobalt, three grades of dynamic waves absorb treating column as tail gas, reaction solution is for containing the cobalt nickel electrolyte, keeping temperature of reaction before producing in the storage tank of one-level dynamic wave reaction tower 3 and second motive force ripple reaction tower 4 is 65 ℃, pH is set to 4.5, the redox potential value is 1050mV, during production, liquid chlorine through 1 gasification of chlorine gasification bag after and the reaction solution in the reaction solution storage tank 2 enter simultaneously the contrary spray reacting pipe of one-level dynamic wave reaction tower 3, both reverse contacts, form the foam reactant district, enter into after reaction solution and chlorine contact reacts are finished in one-level dynamic wave tower 3 storage tanks, carry out cobaltous hydrolytic precipitation reaction, in the reaction process, temperature of reaction control is by regulating the heating realization, and pH regulates by adding nickelous carbonate, and redox potential is regulated by changing chlorine flowrate; Afterwards, the chlorine that is not absorbed reaction in the one-level dynamic wave reaction tower 3 enters into second motive force ripple reaction tower 4 contrary spray reacting pipes, the reaction solution of second motive force ripple reaction tower 4 is provided by one-level dynamic wave reaction tower 3, chlorine and reaction solution reverse contact in second motive force ripple reaction tower 4 contrary spray reaction tubess, form the foam reactant district, after finishing, reaction solution and chlorine contact reacts enter in second motive force ripple reaction tower 4 storage tanks, further carry out cobaltous hydrolytic precipitation reaction, in the reaction process, temperature of reaction control realizes by regulating heating, pH regulates by adding nickelous carbonate, and redox potential is regulated by changing chlorine flowrate; Simultaneously, second motive force ripple reaction tower 4 storage tank internal reaction liquid are carried out cobalt contents analysis and density analysis, when reaction solution reaches the cobalt contents of setting discharging and density criterion, containing cobalt precipitin reaction liquid enters into filtration unit 6 and filters in second motive force ripple reaction tower 4 storage tanks, filter residue enters filter residue accumulator tank 7, contain cobalt precipitation filter residue and can do further deep processing processing except cobalt, and carry out electrolytic reaction except the filtrate after the cobalt can enter into the nickel electrowinning operation, the unreacted chlorine of second motive force ripple reaction tower 4 interior remnants enters into three grades of dynamic wave tail gas absorbers 5, by adding sodium hydroxide lye to chlorine absorption, tail gas is up to standard discharges by blower fan 8.
Claims (5)
1. a dynamic wave chlorine oxidation is except driller's skill, utilize the dynamic wave reaction tower, it is characterized in that, described dynamic wave chlorine oxidation is except three grades of dynamic waves of cobalt process using, one-level dynamic wave and second motive force ripple reclaim reaction tower as cobalt, three grades of dynamic waves absorb treating column as tail gas, may further comprise the steps:
Step 1, in the storage tank of one-level dynamic wave reaction tower and second motive force ripple reaction tower temperature of reaction being set is 60～70 ℃, and pH is set between 4.0～5.0, and the redox potential value is set as 1000～1100mV;
Enter simultaneously the contrary spray reacting pipe of one-level dynamic wave reaction tower after step 2, liquid chlorine gasify through chlorine gasification bag with reaction solution, both reverse contacts form the foam reactant district;
Step 3 enters into after reaction solution and chlorine contact reacts are finished in the one-level dynamic wave tower storage tank, carries out cobaltous hydrolytic precipitation reaction;
Step 4, the chlorine that is not absorbed reaction in the first stage tower enters into the contrary spray of second motive force ripple reaction tower reacting pipe, the reaction solution of second motive force ripple is provided by one-level dynamic wave reaction tower, and chlorine and reaction solution reverse contact in the contrary spray of second motive force ripple tower reaction tubes form the foam reactant district;
Step 5 enters into after reaction solution and chlorine contact reacts are finished in the second motive force ripple tower storage tank, further carries out cobaltous hydrolytic precipitation reaction;
Step 6, second motive force ripple tower storage tank internal reaction liquid is carried out cobalt contents analysis and density analysis, when reaction solution reaches the cobalt contents of setting discharging and density criterion, contain cobalt precipitin reaction liquid and in second motive force ripple tower storage tank, enter into filtration unit and filter, filter residue enters the filter residue accumulator tank;
Step 7, the remaining unreacted chlorine of second motive force ripple reaction tower enters into three grades of dynamic wave tail gas absorbers, by alkali lye to chlorine absorption after qualified discharge.
2. dynamic wave chlorine oxidation according to claim 1 is characterized in that except driller's skill, and in the described step 1, temperature control is passed through to regulate heating and realized, pH regulates by adding alkali lye, and redox potential is passed through to change chlorine flowrate and regulated.
3. dynamic wave chlorine oxidation according to claim 2 is characterized in that except driller's skill, and described alkali lye is nickelous carbonate or yellow soda ash.
4. dynamic wave chlorine oxidation according to claim 1 is characterized in that except cobalt technique, in the described step 6, contains the filtrate after cobalt precipitin reaction liquid filters, and is recyclable.
5. dynamic wave chlorine oxidation according to claim 1 is characterized in that except driller's skill, in the described step 7, by adding sodium hydroxide lye remaining chlorine is absorbed, and tail gas is discharged through blower fan.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279665A (en) * | 2018-09-13 | 2019-01-29 | 郑忆依 | A kind of processing method of nickle cobalt lithium manganate ternary waste material |
| CN109797406A (en) * | 2019-03-20 | 2019-05-24 | 金川集团股份有限公司 | It is a kind of to reduce the chlorine device and method nickeliferous except cobalt slag |
| CN110358915A (en) * | 2019-07-11 | 2019-10-22 | 兰州理工大学 | A kind of method of nickel and cobalt ions in separation electrolytic solution |
| CN112387050A (en) * | 2020-11-13 | 2021-02-23 | 攀枝花钢企欣宇化工有限公司 | Magnesium electrolysis chlorine gas purification process |
| CN113957490A (en) * | 2021-11-05 | 2022-01-21 | 金川集团股份有限公司 | Electrolytic nickel purification and impurity removal reaction tank and method thereof |
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| JP3724179B2 (en) * | 1998-03-19 | 2005-12-07 | 住友金属鉱山株式会社 | Separation of alkaline earth metals from aqueous cobalt solutions |
| CN101463427A (en) * | 2008-11-27 | 2009-06-24 | 佛山市邦普镍钴技术有限公司 | Method for recycling valuable metal from cobalt white alloy |
| CN102230185A (en) * | 2011-06-20 | 2011-11-02 | 南通新玮镍钴科技发展有限公司 | Device and method for absorbing chlorine acid mist in electrodeposited cobalt production process |
-
2013
- 2013-07-26 CN CN201310331269.3A patent/CN103361483B/en active Active
Patent Citations (3)
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| JP3724179B2 (en) * | 1998-03-19 | 2005-12-07 | 住友金属鉱山株式会社 | Separation of alkaline earth metals from aqueous cobalt solutions |
| CN101463427A (en) * | 2008-11-27 | 2009-06-24 | 佛山市邦普镍钴技术有限公司 | Method for recycling valuable metal from cobalt white alloy |
| CN102230185A (en) * | 2011-06-20 | 2011-11-02 | 南通新玮镍钴科技发展有限公司 | Device and method for absorbing chlorine acid mist in electrodeposited cobalt production process |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279665A (en) * | 2018-09-13 | 2019-01-29 | 郑忆依 | A kind of processing method of nickle cobalt lithium manganate ternary waste material |
| CN109279665B (en) * | 2018-09-13 | 2020-09-25 | 郑忆依 | Treatment method of nickel cobalt lithium manganate ternary waste |
| CN109797406A (en) * | 2019-03-20 | 2019-05-24 | 金川集团股份有限公司 | It is a kind of to reduce the chlorine device and method nickeliferous except cobalt slag |
| CN109797406B (en) * | 2019-03-20 | 2023-06-27 | 金川集团股份有限公司 | Device and method for reducing nickel content in cobalt removal slag of chlorine |
| CN110358915A (en) * | 2019-07-11 | 2019-10-22 | 兰州理工大学 | A kind of method of nickel and cobalt ions in separation electrolytic solution |
| CN112387050A (en) * | 2020-11-13 | 2021-02-23 | 攀枝花钢企欣宇化工有限公司 | Magnesium electrolysis chlorine gas purification process |
| CN113957490A (en) * | 2021-11-05 | 2022-01-21 | 金川集团股份有限公司 | Electrolytic nickel purification and impurity removal reaction tank and method thereof |
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| CN103361483B (en) | 2015-04-08 |
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