CN103641180B - For the washing device in nickel hydroxide production process and method - Google Patents
For the washing device in nickel hydroxide production process and method Download PDFInfo
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- CN103641180B CN103641180B CN201310684598.6A CN201310684598A CN103641180B CN 103641180 B CN103641180 B CN 103641180B CN 201310684598 A CN201310684598 A CN 201310684598A CN 103641180 B CN103641180 B CN 103641180B
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Abstract
The present invention relates to washing device and method.Technical problem to be solved by this invention be to provide a kind of water-saving and environmental protection for the washing methods in nickel hydroxide production process.The technical scheme adopted can be summarized as: for the washing device in nickel hydroxide production process, comprise dehydration equipment, also comprise material conveyor, soaking compartment, stirrer, transferpump and washing water collecting tank, washing water collecting tank is provided with washing water water port, washing water water-in and recovery washing water water outlet, washing water water-in is connected with dehydration equipment, reclaim washing water water outlet to be connected with soaking compartment, described soaking compartment is provided with water-in of purifying waste water, soaking compartment inside is provided with stirrer, soaking compartment is connected with transferpump, transferpump is connected with the entrance end of dehydration equipment again, the exit end of described dehydration equipment is connected with material conveyor, material conveyor is connected with soaking compartment again, effective saving bath water, reduces loss of material, be applicable to wash nickel hydroxide in nickel hydroxide production process.
Description
Technical field
The present invention relates to a kind of washing device and method, especially relate to a kind of for the washing device in nickel hydroxide production process and method.
Background technology
At present, the nickel hydroxide used in the store batteries such as most cadmium nickel, iron nickel is that single nickel salt and sodium hydroxide are produced by chemical reaction.Sulfate impurities can be produced in its production process, and sulfate impurities brings impact can to the product of reaction.Nowadays in normally used removal nickel hydroxide, the method for sulfate impurities is that nickel hydroxide powder is put into dehydration equipment, then passes into warm water and rinses.But the bath water amount needed for the method is very large, and washing time is long, and loss of material is large.Specifically, adopt the method often to wash 1kg nickel hydroxide bath water and about need 10kg, per minute can wash nickel hydroxide and be about 0.8kg, often washs 1kg nickel hydroxide and about loses material 6%.And only have dehydration equipment in existing nickel hydroxide washing process, there is no miscellaneous equipment.Because current nickel hydroxide washing process water loss is large, the time is long, loss of material is large, and so not only water resources causes very large waste, and also comparatively serious to environmental influence, very unfavorable to environment protection.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of water-saving and environmental protection for the washing methods in nickel hydroxide production process.
The technical solution adopted for the present invention to solve the technical problems is: for the washing device in nickel hydroxide production process, comprise dehydration equipment, also comprise material conveyor, soaking compartment, stirrer, transferpump and washing water collecting tank, washing water collecting tank is provided with washing water water port, washing water water-in and recovery washing water water outlet, washing water water-in is connected with dehydration equipment, reclaim washing water water outlet to be connected with soaking compartment, described soaking compartment is provided with water-in of purifying waste water, soaking compartment inside is provided with stirrer, soaking compartment is connected with transferpump, transferpump is connected with the entrance end of dehydration equipment again, the exit end of described dehydration equipment is connected with material conveyor, material conveyor is connected with soaking compartment again.
Concrete, dehydration equipment is the whizzer with automatic discharging function.
The present invention solves another technical scheme that its technical problem adopts: for the washing methods in nickel hydroxide production process, comprise the following steps:
A. add in soaking compartment and purify waste water, while stirring, add nickel hydroxide, purifying waste water with the mass ratio of nickel hydroxide is 1:0.7 ~ 1:0.9;
B. stop stirring, and soak, form suspension;
C. start stirrer, while stirring, the suspension in soaking compartment is squeezed in dehydration equipment and dewaters, form the nickel hydroxide of solid, detect the water deviate from dehydration equipment and whether reach requirement, if reach requirement, then enter step e; If do not reach requirement, enter step D;
D. repeating step A to C;
E. washing is completed.
When initially carrying out washing nickel hydroxide, the nickel hydroxide in steps A is what newly add.As repeating step A to C, the nickel hydroxide of the solid that the nickel hydroxide in steps A is formed before being after dehydration equipment dehydration.
Concrete, the water temperature of purifying waste water in steps A is 75 DEG C ~ 95 DEG C.
Further, the time of soaking mixing liquid in step B is 10min ~ 20min.
Further, also comprise after step e
F. the water deviate from dehydration equipment is collected.
The invention has the beneficial effects as follows: effectively save bath water, reduce loss of material, improve effect; And this apparatus structure is simple, easy to operate, building of production line easy, easily be automated control.The present invention is applicable to wash nickel hydroxide in nickel hydroxide production process.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention;
Wherein, 1 is dehydration equipment, and 2 is material conveyor, and 3 is soaking compartment, and 4 is stirrer, and 5 is transferpump, and 6 is washing water collecting tank, and 31 is water-in of purifying waste water, and 61 is washing water water port, and 62 is washing water water-in, and 63 for reclaiming washing water water outlet.
Embodiment
Below in conjunction with embodiment, describe technical scheme of the present invention in detail.
Of the present invention for the washing device in nickel hydroxide production process, comprise dehydration equipment 1, also comprise material conveyor 2, soaking compartment 3, stirrer 4, transferpump 5 and washing water collecting tank 6, washing water collecting tank 6 is provided with washing water water port 61, washing water water-in 62 and recovery washing water water outlet 63, washing water water-in 62 is connected with dehydration equipment 1, reclaim washing water water outlet 63 to be connected with soaking compartment 3, described soaking compartment 3 is provided with water-in 31 of purifying waste water, soaking compartment 3 inside is provided with stirrer 4, soaking compartment 3 is connected with transferpump 5, transferpump 5 is connected with the entrance end of dehydration equipment 1 again, the exit end of described dehydration equipment 1 is connected with material conveyor 2, material conveyor 2 is connected with soaking compartment 3 again.
Washing water collecting tank 6 can effectively be collected washing water, and the washing water met the demands are injected in soaking compartment 3 after can being recovered and wash nickel hydroxide.The washing water do not met the demands carry out drainage sunk well by washing water water port 61.
Material conveyor 2 is by the nickel hydroxide after dehydration, i.e. the nickel hydroxide of solid, is sent in soaking compartment 3 and soaks.
Soaking compartment 3 is provided with water-in 31 of purifying waste water, and can utilize to purify waste water and soak in washing process at the beginning; In washing process afterwards, after the washing water in washing water collecting tank 6 meet the demands, washing water can enter into soaking compartment 3 by recovery washing water water outlet 63 and carry out recovery use, reduce water consumption, water saving.
Preferably, dehydration equipment 1, for having the whizzer of automatic discharging function, can effectively improve level of automation and detersive efficiency.
This device is easy to operate, and building of production line is easy, easily is automated control.
Of the present invention for the washing methods in nickel hydroxide production process, comprise the following steps:
A. add in soaking compartment and purify waste water, while stirring, add nickel hydroxide, purifying waste water with the mass ratio of nickel hydroxide is 1:0.7 ~ 1:0.9;
B. stop stirring, and soak, form suspension;
C. start stirrer, while stirring, the suspension in soaking compartment is squeezed in dehydration equipment and dewaters, form solid nickel hydroxide, detect the water deviate from dehydration equipment and whether reach requirement, if reach requirement, then enter step e; If do not reach requirement, enter step D;
D. repeating step A to C;
E. washing is completed.
When purifying waste water with the mass ratio of nickel hydroxide lower than 1:0.7, the concentration of suspension is too low, increases the consumption of water, increases washing cost and cost of sewage disposal; When purifying waste water with the mass ratio of nickel hydroxide higher than 1:0.9, the excessive concentration of suspension, easily causes transport pipe to block, causes the fault that cannot wash.
And in needing when constantly stirring, nickel hydroxide to be added and purifying waste water, when nickel hydroxide adds fashionable when not stirring, can the starting power of increasing device when starting stirrer, easily cause the burn-down of electric motor of stirrer.Therefore, only when constantly stirring, nickel hydroxide is added purify waste water in be the best approach.
Preferably, the water temperature range of purifying waste water added in steps A is 75 DEG C ~ 95 DEG C.When water temperature is lower than 75 DEG C, the impurity in nickel hydroxide is not soluble, will increase the consumption of water, and will extend washing time, reduce work efficiency; When water temperature is higher than 95 DEG C, there is stronger destruction to the particle diameter of nickel hydroxide, the particle diameter of nickel hydroxide is reduced, the oxidation of nickel hydroxide also can be caused simultaneously to generate nickel oxide, thus lose the functional performance of nickel hydroxide.In like manner, the water temperature range of purifying waste water added in step D is 75 DEG C ~ 95 DEG C.
Stirring is stopped to start to soak in step B, soak time 10min ~ 20min.When soak time is lower than 10min, in nickel hydroxide, sulfate impurities is not yet fully dissolved, and will increase the usage quantity of water and extend washing time; When soak time is higher than 20min, in nickel hydroxide, sulfate impurities is saturated, and impurity can not more dissolvings, will extend washing time, reduces work efficiency.
After completing washing, the nickel hydroxide after dehydration is proceeded to subsequent processing and carry out drying, can be used for the washing of lower batch of nickel hydroxide after purifying waste water after dehydration being collected, water saving.Concrete, the present invention includes circulation immersion washing, recycle washing water, first nickel hydroxide to be washed is put in fermentation vat during washing, and add to purify waste water and soak, after soaking certain hour, with impeller pump, water-containing materials is sent in whizzer, dewater, after dehydration terminates, material is unloaded and sends in fermentation vat, re-start immersion, dehydration reciprocation cycle, until the Impurity removal in the middle of nickel hydroxide is clean.
Embodiment 1
A1. the 300 premium on currency temperature adding recovery in soaking compartment are 81 DEG C and purify waste water, and slowly add 220kg nickel hydroxide to be washed when starting stirrer;
B1. nickel hydroxide adds complete, stops stirring starting to soak 10min;
C1. after soak time meets the demands, open stirrer, whizzer, reach after rotating speed until whizzer, start impeller pump and nickel hydroxide suspension is sent into centrifuge dewatering formation solid nickel hydroxide; When the anhydrous outflow of whizzer water outlet, the nickel hydroxide after dehydration is discharged into soaking compartment;
D1. judge washing times, if first three time washing, then the water temperature adding recovery is 81 DEG C and purifies waste water and soak; Otherwise adding clean water temperature is that 81 DEG C purify waste water is soaked;
E1. judge whether to have completed seven washings, if so, then enter step F 1, otherwise, repeating step B1 to D1;
F1. washing is completed.
The washing hourly water consumption used in this example is about 1200kg(and is about 5.5kg/kg, and namely washing every kg of hydrogen nickel oxide need consume the 5.5kg that purifies waste water), reduce water consumption about 45%; Washing time is about 70min(3.1kg/min, namely refers to that per minute can wash nickel hydroxide 3.1kg), work efficiency can improve about 4 times; Washing material loss 6.1kg(about 2.8%).
Embodiment 2
A2. the 500 premium on currency temperature adding recovery in soaking compartment are 93 DEG C and purify waste water, and slowly add 445kg nickel hydroxide to be washed when starting stirrer;
B1. nickel hydroxide adds complete, stops stirring starting to soak 20min;
C1. after soak time meets the demands, open stirrer, whizzer, reach after rotating speed until whizzer, start impeller pump and nickel hydroxide suspension is sent into centrifuge dewatering formation solid nickel hydroxide; When the anhydrous outflow of whizzer water outlet, the nickel hydroxide after dehydration is discharged into soaking compartment;
D1. judge washing times, if first three time washing, then the water temperature adding recovery is 81 DEG C and purifies waste water and soak; Otherwise adding clean water temperature is that 93 DEG C purify waste water is soaked;
E1. judge whether to have completed seven washings, if so, then enter step F 1, otherwise, repeating step B1 to D1;
F1. washing is completed.
The washing hourly water consumption used in this example is about 2000kg(and is about 4.5kg/kg), reduce water consumption about 55%; Washing time 140min (being about 3.2kg/min), work efficiency improves about 4 times; Washing material loss 11.2kg(about 2.5%); Under the cooperation of equipment.
Adopt the present invention to carry out the washing of nickel hydroxide, can save washing water 60%, loss of material reduces 50%, and work efficiency promotes 200% under the cooperation of equipment.
The present invention compared with prior art tool has the following advantages:
1 can save a large amount of bath wateies, and water-saving rate reaches more than 45%, and the minimizing of water consumption, significantly reduces cost of sewage disposal, improves the utilization ratio of water resources, is very beneficial for protection of the environment.
2 under the cooperation of equipment work efficiency can promote nearly 4 times.
The loss of 3 minimizing materials, rate of loss is reduced to about 3% by about 6%.
4 Automated condtrol that easily can realize production line, reduce the labour intensity of operator.
Claims (2)
1. for the washing device in nickel hydroxide production process, comprise dehydration equipment (1), it is characterized in that, also comprise material conveyor (2), soaking compartment (3), stirrer (4), transferpump (5) and washing water collecting tank (6), washing water collecting tank (6) is provided with washing water water port, washing water water-in and recovery washing water water outlet, washing water water-in is connected with dehydration equipment (1), reclaim washing water water outlet to be connected with soaking compartment (3), described soaking compartment (3) is provided with water-in of purifying waste water, soaking compartment (3) inside is provided with stirrer (4), soaking compartment (3) is connected with transferpump (5), transferpump (5) is connected with the entrance end of dehydration equipment (1) again, the exit end of described dehydration equipment (1) is connected with material conveyor (2), material conveyor (2) is connected with soaking compartment (3) again.
2. as claimed in claim 1 for the washing device in nickel hydroxide production process, it is characterized in that, dehydration equipment (1) is for having the whizzer of automatic discharging function.
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| CN201310684598.6A CN103641180B (en) | 2013-12-13 | 2013-12-13 | For the washing device in nickel hydroxide production process and method |
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| CN201310684598.6A CN103641180B (en) | 2013-12-13 | 2013-12-13 | For the washing device in nickel hydroxide production process and method |
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| CN103641180B true CN103641180B (en) | 2015-11-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773051Y (en) * | 2005-02-28 | 2006-04-19 | 宜兴新兴锆业有限公司 | Sphrical washer for preparing nickel hydroxide |
| CN101168453A (en) * | 2006-10-27 | 2008-04-30 | 北京有色金属研究总院 | Method for treating (SO4)2- impurity of spherical nickel hydroxide |
| CN101934245A (en) * | 2010-08-25 | 2011-01-05 | 马鞍山钢铁股份有限公司 | Washing separation device containing powder block material and separation method thereof |
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2013
- 2013-12-13 CN CN201310684598.6A patent/CN103641180B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773051Y (en) * | 2005-02-28 | 2006-04-19 | 宜兴新兴锆业有限公司 | Sphrical washer for preparing nickel hydroxide |
| CN101168453A (en) * | 2006-10-27 | 2008-04-30 | 北京有色金属研究总院 | Method for treating (SO4)2- impurity of spherical nickel hydroxide |
| CN101934245A (en) * | 2010-08-25 | 2011-01-05 | 马鞍山钢铁股份有限公司 | Washing separation device containing powder block material and separation method thereof |
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| CN103641180A (en) | 2014-03-19 |
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