CN213835499U - High-concentration cobalt iron liquid high-pressure iron removal system - Google Patents
High-concentration cobalt iron liquid high-pressure iron removal system Download PDFInfo
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- CN213835499U CN213835499U CN202022915320.3U CN202022915320U CN213835499U CN 213835499 U CN213835499 U CN 213835499U CN 202022915320 U CN202022915320 U CN 202022915320U CN 213835499 U CN213835499 U CN 213835499U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a high-pressure deironing system of high concentration cobalt iron liquid, include dilution tank, slurrying groove, 3 high-pressure batch autoclave, flash drum, the pressure filter with pipe connection in proper order, flash drum tank bottom stream mouth simultaneously with slurrying groove and pressure filter with pipe connection, accessible valve makes the partial flash distillation underflow return slurrying groove as the seed crystal, pressure filter leakage fluid dram branch road and dilution tank are with pipe connection, realize diluting the purpose of high concentration cobalt iron liquid with the back liquid of deironing. The high-concentration cobalt-iron liquid enters a dilution tank, the iron-removed liquid is diluted to a certain concentration and then enters a slurrying tank, the slurrying liquid enters a high-pressure reaction kettle for iron removal, the reaction is completed and enters a flash evaporation tank, part of flash evaporation underflow enters a filter press for solid-liquid separation, the obtained iron-removed liquid returns to the dilution tank, and the rest flash evaporation underflow returns to the slurrying tank to be used as seed crystals for recycling. The utility model discloses to the deironing of high concentration cobalt iron liquid, can increase reaction rate, reduce energy resource consumption, realize deironing in succession.
Description
Technical Field
The utility model belongs to the technical field of the cobalt hydrometallurgy, in particular to a high-pressure deironing system for high concentration cobalt iron liquid.
Background
Cobalt-copper alloy is one of the common raw materials in the nickel-cobalt hydrometallurgy industry. The copper-cobalt alloy raw material contains rich copper-cobalt resources, has low content of impurities such as manganese, magnesium and the like, selects the copper-cobalt alloy as the cobalt salt production raw material, and has the advantages of simple subsequent treatment process, low extraction impurity removal pressure and wastewater amount, few types of byproducts and the like. The disadvantage of using copper-cobalt alloy as raw material is that the iron content in the leaching solution is high, the conventional iron removal method is difficult to achieve a good iron removal effect, and the amount of iron removal slag generated is large and the disposal is difficult. Therefore, through the iron removal system with reasonable design, the iron removal effect is rapidly improved, and meanwhile, the iron slag recycling is realized, so that the iron slag recycling system has important significance in reducing the production cost and relieving the environmental protection pressure. The conventional normal-pressure iron removal system is suitable for treating low-concentration cobalt-copper leachate with iron content not higher than 20g/L, when the iron content is higher, iron hydroxide colloid is easily generated when the system adopting the conventional normal-pressure iron removal method such as a goethite method, an ammoniojarosite method and the like is used for operation, the filtering performance is poor, the iron content of iron slag generated by the normal-pressure system is lower than 30%, and the iron slag recycling value is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a high-concentration cobalt iron liquid high-pressure iron removal system, a high-pressure reaction kettle in the system realizes continuous production by adopting an overflow method through flow control, the iron removal effect is good, and the iron content of iron slag is high; meanwhile, the underflow seed crystal and the iron-removed liquid can be recycled, so that the material and energy consumption is reduced.
In order to achieve the aim, the high-concentration cobalt iron liquid high-pressure iron removal system comprises a dilution tank, a slurrying tank, a high-pressure reaction kettle I, a high-pressure reaction kettle II, a high-pressure reaction kettle III, a flash evaporation tank and a filter press which are sequentially connected through pipelines; the bottom outflow port of the flash evaporation tank is simultaneously connected with the inlet of the slurrying tank and the inlet of the filter press through pipelines, and the liquid outlet of the filter press is connected with the inlet of the dilution tank through a pipeline; the high-pressure reaction kettle I, the high-pressure reaction kettle II and the high-pressure reaction kettle III are connected in series in an overflow mode, and the high-pressure reaction kettle III is connected with the flash evaporation tank in an overflow mode; the dilution tank is provided with a high-concentration cobalt-iron liquid inlet, and the slurrying tank is provided with a cobalt hydroxide feed inlet; an oxygen through pipe, an arc frame type stirring paddle and a heating inner coil pipe are arranged in the high-pressure reaction kettle; frame type stirring paddles are arranged in the dilution tank and the slurrying tank, and an iron slag outlet is arranged at the bottom of the filter press.
Preferably, the pipeline connecting the bottom outlet of the flash evaporation tank and the inlet of the slurry tank is communicated with the pipeline connecting the outlet of the dilution tank and the inlet of the slurry tank.
Preferably, oxygen is directly introduced into the reaction liquid at the bottom of the side wall of the high-pressure reaction kettle through a high-pressure pipeline, and each high-pressure reaction kettle is provided with five oxygen through pipes, so that the reaction is carried out more efficiently, more uniformly and more thoroughly.
Preferably, the high-pressure reaction kettle is provided with a slag removing port at the bottom of the kettle, so that the maintenance of the kettle body and the adjustment of the crystal form of slag in the production process are facilitated.
Preferably, an overflow pipe connected with the high-pressure reaction kettle is inserted into the middle part of the high-pressure reaction kettle, so that the overflow amount can be increased.
Preferably, the heating inner coil pipes in the three high-pressure reaction kettles are communicated and heated by steam, so that the steam loss is reduced, and the energy utilization rate is improved.
The utility model discloses the during operation, high concentration cobalt iron liquid gets into the dilution tank, liquid dilutes into the slurrying groove after certain concentration through deironing back, get into high-pressure batch autoclave deironing after the slurrying, the reaction is accomplished and is got into flash drum relief pressure and cooling, make partial flash distillation underflow return the slurrying groove through the valve and participate in the reaction as the seed crystal, the surplus flash distillation underflow gets into the pressure filter and carries out solid-liquid separation, the liquid returns the dilution tank after the deironing that obtains, the material cyclic utilization of whole set of system, realize energy-conserving increase, reduce cost's purpose.
The liquid after iron removal of the high-pressure iron removal system of the utility model enters the dilution tank, so that the high-concentration cobalt-iron liquid can be diluted, and the cobalt concentration can be improved; the flash evaporation bottom flow is returned to the slurrying tank to be used as seed crystal, and the Fe can be improved2O3The crystal form and the crystallization rate of the compound are improved, and materials can be recycled; the pH value of the iron-removed liquid in the slurrying tank is adjusted by using cobalt hydroxide, the reaction rate is increased, the cobalt concentration is improved, and acid generated in the reaction process is consumed; the oxygen through pipe is inserted into the bottom of the high-pressure reaction kettle, so that the utilization rate of oxygen can be improved; the high-pressure reaction kettle is heated by adopting a steam inner coil pipe so as to avoid water body expansion caused by direct connection of steam and reduce the concentration of cobalt; adopt circular arc frame stirring rake can realize low-speed intensive mixing effect in reation kettle, avoid stirring intensity too big to cause the Fe that generates2O3The particles are too small, affecting the filtration rate. In addition, the bottom of the high-pressure reaction kettle is provided with a special slag removal port, so that the high-pressure reaction kettle is convenient to overhaul and remove slag, and Fe is carried out2O3And (4) adjusting the crystal form.
By adopting the high-pressure iron removal system of the utility model, the iron content in the iron slag obtained by precipitation is more than 60-70%, and the iron slag can be sold to iron and steel plants as iron-making raw materials, thus having higher iron slag resource utilization value. Use the utility model discloses a high pressure deironing system carries out the deironing process of cobalt copper leaching solution, and the deironing rate can reach more than 95%, and the loss rate of cobalt can fall to below 0.1%. The utility model discloses to the deironing of high concentration cobalt iron liquid, can increase reaction rate, reduce energy resource consumption, realize deironing in succession.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The numerical designations in the drawings mean: 1-high concentration cobalt iron liquid inlet; 2-a dilution tank; 3-frame type stirring paddle; 4-a diluent conveying pipe; 5-a main pipe of diluent and underflow liquid; 6-cobalt salt feed inlet; 7-a slurrying tank; 8-frame type stirring paddle; 9-slurry conveying pipe; 10-1# high-pressure reaction kettle; 11-oxygen through pipe; 12-arc frame type stirring paddle; 13-heating the inner coil; 14-maintenance and slag removal port; 15-1# kettle overflow pipe; 16-2# high-pressure reaction kettle; 17-oxygen through pipe; 18-arc frame type stirring paddle; 19-heating the inner coil; 20-maintenance and slag removal port; 21-2# kettle overflow pipe; 22-3# high-pressure reaction kettle; 23-oxygen through pipe; 24-arc frame type stirring paddle; 25-heating the inner coil pipe; 26-maintenance and slag removal port; 27-3# kettle overflow pipe; 28-flash drum; 29-flash underflow leg; 30-flash underflow leg; 31-a filter press; 32-iron slag outlet; 33-liquid pipe after iron removal.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the high-pressure iron removal system for high-concentration cobalt-iron liquid described in this embodiment includes a dilution tank 2, a slurry tank 7, a first high-pressure reactor 10, a second high-pressure reactor 16, a third high-pressure reactor 22, a flash tank 28, and a filter press 31, which are connected in sequence by a pipeline; a high-concentration cobalt iron liquid inlet 1 is arranged on the dilution tank, and a frame type stirring paddle 3 is arranged in the dilution tank; a cobalt hydroxide feeding hole 6 is formed in the slurrying tank, a frame type stirring paddle 8 is arranged in the slurrying tank, and the bottom of the slurrying tank is connected with an inlet of the high-pressure reaction kettle I through a slurrying liquid conveying pipe 9; an oxygen through pipe 11, an arc frame type stirring paddle 12, a heating inner coil pipe 13 and an overhauling and slag removing port 14 are arranged in the first high-pressure reaction kettle; the first high-pressure reaction kettle is connected with the second high-pressure reaction kettle in an overflowing way through an overflow pipe 15; an oxygen through pipe 17, an arc frame type stirring paddle 18, a heating inner coil pipe 19 and an overhauling and slag removing hole 20 are arranged in the high-pressure reaction kettle II; the high-pressure reaction kettle two-way pipe is connected with the high-pressure reaction kettle three-way pipe through an overflow pipe 21; an oxygen through pipe 23, an arc frame type stirring paddle 24, a heating inner coil pipe 25 and an overhauling and slag removing hole 26 are arranged in the high-pressure reaction kettle III; the high-pressure reaction kettle tee joint is connected with the flash tank overflow through an overflow pipe 27; the bottom outflow port of the flash evaporation tank is communicated with a diluent and underflow liquid main pipe 5 through a flash evaporation underflow branch pipe 29, and a diluent conveying pipe 4 at the bottom of the flash evaporation tank is communicated with the diluent and underflow liquid main pipe; the diluent and underflow liquid main pipe is connected with the inlet of the slurrying tank; the bottom outflow port of the flash evaporation tank is connected with the inlet of the filter press through a flash evaporation underflow branch pipe 30, the liquid outlet of the filter press is connected with the inlet of the dilution tank through a liquid pipe 33 after iron removal, and the bottom of the filter press is provided with an iron slag outlet 32.
The utility model discloses a high pressure deironing system during operation, high concentration cobalt iron liquid gets into dilution tank 2, and liquid dilutes after the deironing and gets into slurrying groove 7 after certain concentration, and liquid gets into the dilution tank after the deironing, can dilute high concentration cobalt iron liquid, and can improve cobalt concentration. The diluent enters a slurrying tank for slurrying, the pH of the liquid in the slurrying tank is adjusted through cobalt hydroxide, the reaction rate is increased, the cobalt concentration is improved, and acid generated in the reaction process can be consumed; meanwhile, partial flash evaporation underflow is returned to the slurrying tank through a valve to be used as seed crystal to participate in the reaction, so that the Fe can be improved2O3The crystal form and the crystallization rate of the compound can be improved, and the materials can be recycled. The slurried materials enter three high- pressure reaction kettles 10, 16 and 22 which are in overflow connection for removing iron, and an oxygen through pipe is inserted into the bottom of the high-pressure reaction kettle, so that the utilization rate of oxygen can be improved; the high-pressure reaction kettle is heated by adopting a steam inner coil pipe so as to avoid water body expansion caused by direct connection of steam and reduce the concentration of cobalt; adopt circular arc frame stirring rake can realize low-speed intensive mixing effect in reation kettle, avoid stirring intensity too big to cause the Fe that generates2O3The particles are too small, which affects the filtration speed; in addition, the bottom of the high-pressure reaction kettle is provided with a special slag removal port, which is convenient for maintenance and slag removal, so as toAnd carrying out Fe2O3And (4) adjusting the crystal form. After the reaction is finished, the obtained mixture enters a flash evaporation tank 28 to release pressure and cool, the rest flash evaporation bottom flow enters a filter press 31 to carry out solid-liquid separation, the obtained liquid after iron removal returns to a dilution tank, and the iron slag meets the iron concentrate standard for sale.
Claims (6)
1. The utility model provides a high concentration cobalt iron liquid high pressure deironing system which characterized in that: the device comprises a dilution tank, a slurrying tank, a high-pressure reaction kettle I, a high-pressure reaction kettle II, a high-pressure reaction kettle III, a flash evaporation tank and a filter press which are sequentially connected through pipelines; the bottom outflow port of the flash evaporation tank is simultaneously connected with the inlet of the slurrying tank and the inlet of the filter press through pipelines, and the liquid outlet of the filter press is connected with the inlet of the dilution tank through a pipeline; the high-pressure reaction kettle I, the high-pressure reaction kettle II and the high-pressure reaction kettle III are connected in series in an overflow mode, and the high-pressure reaction kettle III is connected with the flash evaporation tank in an overflow mode; the dilution tank is provided with a high-concentration cobalt-iron liquid inlet, and the slurrying tank is provided with a cobalt hydroxide feed inlet; an oxygen through pipe, an arc frame type stirring paddle and a heating inner coil pipe are arranged in the high-pressure reaction kettle; frame type stirring paddles are arranged in the dilution tank and the slurrying tank, and an iron slag outlet is arranged at the bottom of the filter press.
2. The high-pressure iron removal system for high-concentration ferrocobalt solution according to claim 1, wherein: and the pipeline for connecting the bottom outflow port of the flash evaporation tank with the inlet of the slurrying tank is communicated with the pipeline for connecting the outlet of the dilution tank with the inlet of the slurrying tank.
3. The high-pressure iron removal system for high-concentration ferrocobalt solution according to claim 1, wherein: oxygen is directly introduced into the reaction liquid at the bottom of the side wall of the high-pressure reaction kettle through a high-pressure pipeline, and each high-pressure reaction kettle is provided with five oxygen through pipes.
4. The high-pressure iron removal system for high-concentration ferrocobalt solution according to claim 1, wherein: the high-pressure reaction kettle is provided with a slag removing port at the bottom of the kettle.
5. The high-pressure iron removal system for high-concentration ferrocobalt solution according to claim 1, wherein: an overflow pipe connected with the high-pressure reaction kettle is inserted into the middle part of the high-pressure reaction kettle.
6. The high-pressure iron removal system for high-concentration ferrocobalt solution according to claim 1, wherein: the heating inner coil pipes in the three high-pressure reaction kettles are communicated and heated by adopting steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022915320.3U CN213835499U (en) | 2020-12-08 | 2020-12-08 | High-concentration cobalt iron liquid high-pressure iron removal system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022915320.3U CN213835499U (en) | 2020-12-08 | 2020-12-08 | High-concentration cobalt iron liquid high-pressure iron removal system |
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| CN213835499U true CN213835499U (en) | 2021-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055056A (en) * | 2022-05-27 | 2022-09-16 | 杭州特种纸业有限公司 | Automatic concentration control system for desalting tank |
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- 2020-12-08 CN CN202022915320.3U patent/CN213835499U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055056A (en) * | 2022-05-27 | 2022-09-16 | 杭州特种纸业有限公司 | Automatic concentration control system for desalting tank |
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