CN109930010A - A method of organic matter in removing zinc hydrometallurgy solution - Google Patents

A method of organic matter in removing zinc hydrometallurgy solution Download PDF

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CN109930010A
CN109930010A CN201910149378.0A CN201910149378A CN109930010A CN 109930010 A CN109930010 A CN 109930010A CN 201910149378 A CN201910149378 A CN 201910149378A CN 109930010 A CN109930010 A CN 109930010A
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organic matter
solution
zinc hydrometallurgy
zinc
containing organic
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CN109930010B (en
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李兴彬
魏昶
邓志敢
李旻廷
江国豪
李存兄
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Kunming University of Science and Technology
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The present invention relates to a kind of methods of organic matter in removing zinc hydrometallurgy solution, belong to field of chemical metallurgical technology.Zinc hydrometallurgy solution containing organic matter is stirred, gradually it is cooled to -20 DEG C ~ 10 DEG C, react 10min ~ 60min, nucleation is induced using organic matter, form the crystalline deposit containing organic matter, after reaction, after using crystalline deposit of the centrifugal filtration solid-liquor separation containing organic matter, the solution of zinc sulfate of removing organic matter is obtained.This method is in cooling reactor, there is biggish specific surface area and small organic molecule and solution of zinc sulfate qualitative difference using larger molecular organics, pass through the induction nucleation of organic matter, reaction forms the crystalline deposit containing organic matter, the removing for realizing organic matter by the method being separated by solid-liquid separation again, obtains qualified solution of zinc sulfate.The present invention has many advantages, such as that simple process, easily operated, organic matter removal efficiency is high.

Description

A method of organic matter in removing zinc hydrometallurgy solution
Technical field
The present invention relates to a kind of methods of organic matter in removing zinc hydrometallurgy solution, belong to field of chemical metallurgical technology.
Background technique
Content of organics is excessively high in the solution of zinc sulfate of zinc hydrometallurgy output to bring not solution purification and electrolytic deposition process Benefit influences, and purification process zinc powder consumption is caused to increase, and Zinc electrolysis process current efficiency reduces, power consumption increases, cathode zinc lead doping Deng harm.Therefore, the major issue that the organic matter in solution of zinc sulfate is always the concern of zinc hydrometallurgy industry how is removed.
There is the method for organic matter in removing solution: (1) active carbon adsorption.The porous structure of active carbon provides biggish Surface area has stronger adsorption capacity to organic matter, can after reaching break through volume by the organic matter in adsorbing and removing solution To be regenerated using steam activation.(2) gas floatation process.Gas floatation process is to be blasted using the hydrophobic property of organic matter in solution into solution A large amount of micro air bubble, is adsorbed on organic matter on micro air bubble, so that organic matter is floated together by means of the buoyancy of bubble itself.In liquid The three-phase froth layer being made of bubble, hydration organic matter is formed on face, and froth bed is separated with solution bulk, it is organic to reach removing The purpose of object.(3) liquid film filtration method.By constructing filter membrane, separate organic matter and solution using the unfavourable balance of various concentration.(4) Ultrasonic dehydration oil removing.Tiny oil droplets in solution are vibrated together with medium under the action of ultrasonic wave, but example of different sizes Son has different vibration velocities, and elaioleucite will be collided mutually, and bond, be coalesced, and forms bulky grain oil droplet, and floating forms oil slick, with Solution separation.(5) Ozonation and photooxidation method.Ozonation is the strong oxidizing property decomposing organic matter using ozone.Light Oxidation is that the strong free radical decomposing organic pollutant of oxidability is generated under light radiation using oxidant.
Number of patent application is that the patent of " 201810707518.7 " discloses a kind of photooxidation removing wet process refining smelting zinc sulfuric acid The method of organic matter in zinc solution, this method are to be uniformly mixed solution of zinc sulfate with hydrogen peroxide, then in the case where adding light source outside, into Row photooxidation reaction realizes the decomposition and removing of organic matter.
Number of patent application is that the patent of " 201510456786.2 " discloses a kind of hypergravity and ozone-enhanced removing The method of organic matter in solution of zinc sulfate, this method are oxygenation atomizations after heating solution of zinc sulfate, and the zinc sulfate after atomization is molten Liquid sufficiently carries out reinforcing with ozone in hypergravity issuing equipment and reacts.The oxygen and solution for keeping super gravity field generator again follow Ring obtains the qualified solution of zinc sulfate of removing organic matter.
Although the above method can remove the organic matter in solution of zinc sulfate, mainly removing that molecular weight is lesser can be dissolved with Machine object, the organic matter big for molecular weight, such as gelatine, gelatin, ox glue, removal effect is poor, and there are complicated for operation, equipment to throw Enter the disadvantages of big.Therefore, high efficiency is developed, the simple and easy new method that organic matter is removed from solution of zinc sulfate is still wet The technical problem that method zinc metallurgy industry needs further to solve.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of method for removing organic matter in solution of zinc sulfate.This Method is that have biggish specific surface area and small organic molecule and zinc sulfate using larger molecular organics in cooling reactor The difference of SOLUTION PROPERTIES, by the induction nucleation of organic matter, reaction forms the crystalline deposit containing organic matter, then passes through solid-liquid Isolated method realizes the removing of organic matter, obtains qualified solution of zinc sulfate.The present invention have simple process, it is easily operated, The advantages that organic matter removal efficiency is high.
In order to achieve the above object, the invention is realized by the following technical scheme:
A method of the zinc hydrometallurgy solution containing organic matter is stirred, gradually by organic matter in removing zinc hydrometallurgy solution - 20 DEG C ~ 10 DEG C are cooled to, 10min ~ 60min is reacted, nucleation is induced using organic matter, it is heavy to form the crystallization containing organic matter It forms sediment, after reaction, after crystalline deposit of the centrifugal filtration solid-liquor separation containing organic matter, obtains the zinc sulfate of removing organic matter Solution.
The zinc hydrometallurgy solution containing organic matter is by zinc hydrometallurgy output, and wherein zinc concentration is 40 ~ 155g/L, solution sulphur 0.01 ~ 180g/L of acid concentration.
Organic matter is calculated in the zinc hydrometallurgy solution containing organic matter with total organic carbon, and total organic carbon is greater than 35mg/L.
The zinc hydrometallurgy solution temperature containing organic matter is 35 DEG C ~ 65 DEG C.
The speed of agitator is 10 ~ 120 revs/min.
The detailed process gradually to cool down are as follows: temperature is down to as 25 ~ 30 with the cooling velocity of 1 ~ 2 DEG C/min when beginning DEG C, it then proceedes to be down to -20 DEG C ~ 10 DEG C with the cooling velocity of 2 ~ 5 DEG C/min.
The beneficial effects of the present invention are: this method has biggish ratio using cooling reactor, using larger molecular organics Surface area and small organic molecule and solution of zinc sulfate qualitative difference, by the induction nucleation of organic matter, reaction is formed Crystalline deposit containing organic matter, and under conditions of quick solid-liquor separation, removing contains organic crystalline deposit, obtains qualified sulphur Sour zinc solution.This method does not need additional chemical reagent, has simple process, easily operated, high excellent of organic matter removal efficiency Point.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
The method of organic matter in the removing zinc hydrometallurgy solution, the zinc hydrometallurgy solution by 1000mL containing organic matter (contain organic matter Zinc hydrometallurgy solution by the temperature of zinc hydrometallurgy output be 38 DEG C of waste electrolyte, zinc concentration 40g/L, sulfuric acid concentration 180g/L;Organic matter is calculated in zinc hydrometallurgy solution containing organic matter with total organic carbon, total organic carbon 95.3mg/L, organic matter Type includes the small organic molecules such as the larger molecular organics such as gelatine, mineral oil and ethyl xanthate, fatty acid), it is placed in cooling anti- It answers in device and is stirred (120 revs/min), be gradually cooled to -20 DEG C, detailed process are as follows: with the cooling speed of 1 DEG C/min when beginning It is 25 DEG C that degree, which is down to temperature, then proceedes to be down to -20 DEG C with the cooling velocity of 2 DEG C/min, reacts 10min, lured using organic matter Nucleation is led, the crystalline deposit containing organic matter, after reaction, the knot using centrifugal filtration solid-liquor separation containing organic matter are formed After crystalline substance precipitating, the solution of zinc sulfate of 982mL removing organic matter is obtained.
Testing result is that remove in the solution of zinc sulfate of organic matter total content of organic carbon be 18.5mg/L, organic matter it is de- Except rate is 80.9%.
Embodiment 2
The method of organic matter in the removing zinc hydrometallurgy solution, the zinc hydrometallurgy solution by 1000mL containing organic matter (contain organic matter Zinc hydrometallurgy solution by zinc hydrometallurgy output temperature be 37 DEG C of waste electrolyte, zinc concentration 46g/L, sulfuric acid concentration 165g/ L;Organic matter is calculated in zinc hydrometallurgy solution containing organic matter with total organic carbon, total organic carbon 89.1mg/L, organism kinds Including the small organic molecules such as the larger molecular organics such as gelatin, lubricating oil and ethyl xanthate, fatty acid.It is placed in cooling reactor (80 revs/min) are stirred, are gradually cooled to -10 DEG C, detailed process are as follows: are down to when beginning with the cooling velocity of 1 DEG C/min Temperature is 25 DEG C, then proceedes to be down to -10 DEG C with the cooling velocity of 3 DEG C/min, reacts 30min, is induced and be nucleated using organic matter Effect forms the crystalline deposit containing organic matter, after reaction, the crystalline deposit using centrifugal filtration solid-liquor separation containing organic matter Afterwards, the solution of zinc sulfate of 975mL removing organic matter is obtained.
Testing result is that remove in the solution of zinc sulfate of organic matter total content of organic carbon be 22.0mg/L, organic matter it is de- Except rate is 75.9%.
Embodiment 3
The method of organic matter in the removing zinc hydrometallurgy solution, the zinc hydrometallurgy solution by 1000mL containing organic matter (contain organic matter Zinc hydrometallurgy solution be liquid before zinc hydrometallurgy that Wen Di is 35 DEG C is electrolysed, zinc concentration 52g/L, sulfuric acid concentration 153g/L;Contain Organic matter is calculated in the zinc hydrometallurgy solution of organic matter with total organic carbon, total organic carbon 58.6mg/L, and organism kinds include The small organic molecules such as the larger molecular organics such as ox glue and ethyl xanthate, fatty acid).It is placed in cooling reactor and is stirred (50 revs/min), are gradually cooled to -5 DEG C, detailed process are as follows: are down to temperature with the cooling velocity of 2 DEG C/min when beginning as 25 DEG C, it then proceedes to be down to -5 DEG C with the cooling velocity of 5 DEG C/min, reacts 30min, induce nucleation using organic matter, formed Crystalline deposit containing organic matter after crystalline deposit of the centrifugal filtration solid-liquor separation containing organic matter, obtains after reaction The solution of zinc sulfate of 962mL removing organic matter.
Testing result is that remove in the solution of zinc sulfate of organic matter total content of organic carbon be 20.6mg/L, organic matter it is de- Except rate is 62.9%.
Embodiment 4
The method of organic matter in the removing zinc hydrometallurgy solution, the zinc hydrometallurgy solution by 1000mL containing organic matter (contain organic matter Zinc hydrometallurgy solution be three sections of zinc hydrometallurgy purification after liquid, temperature be 65 DEG C, zinc concentration 155g/L, solution acidity are pH value 5.4;Organic matter is calculated in zinc hydrometallurgy solution containing organic matter with total organic carbon, total organic carbon 35.2mg/L, organic species Class includes the small organic molecules such as the larger molecular organics such as gelatine, mineral oil and ethyl xanthate, fatty acid) it is placed in cooling reactor In be stirred (10 revs/min), be gradually cooled to 10 DEG C, detailed process are as follows: be down to when beginning with the cooling velocity of 2 DEG C/min Temperature is 30 DEG C, then proceedes to be down to 10 DEG C with the cooling velocity of 2 DEG C/min, reacts 60min, induces nucleation to make using organic matter With, crystalline deposit of the formation containing organic matter, after reaction, the crystalline deposit using centrifugal filtration solid-liquor separation containing organic matter Afterwards, the solution of zinc sulfate of 945mL removing organic matter is obtained.
Testing result is that remove in the solution of zinc sulfate of organic matter total content of organic carbon be 21.9mg/L, organic matter it is de- Except rate is 41.2%.
Above the embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment party Formula can also be made without departing from the purpose of the present invention within the knowledge of a person skilled in the art Various change out.

Claims (6)

1. a kind of method of organic matter in removing zinc hydrometallurgy solution, it is characterised in that: by the zinc hydrometallurgy solution containing organic matter It is stirred, is gradually cooled to -20 DEG C ~ 10 DEG C, react 10min ~ 60min, induce nucleation using organic matter, formation contains The crystalline deposit of machine object, after reaction, after crystalline deposit of the centrifugal filtration solid-liquor separation containing organic matter, obtaining removing has The solution of zinc sulfate of machine object.
2. the method for organic matter in removing zinc hydrometallurgy solution according to claim 1, it is characterised in that: described containing organic The zinc hydrometallurgy solution of object is by zinc hydrometallurgy output, and wherein zinc concentration is 40 ~ 155g/L, 0.01 ~ 180g/L of solution sulfuric acid concentration.
3. the method for organic matter in removing zinc hydrometallurgy solution according to claim 1, it is characterised in that: described containing organic Organic matter is calculated in the zinc hydrometallurgy solution of object with total organic carbon, and total organic carbon is greater than 35mg/L.
4. the method for organic matter in removing zinc hydrometallurgy solution according to claim 1, it is characterised in that: described containing organic The zinc hydrometallurgy solution temperature of object is 35 DEG C ~ 65 DEG C.
5. the method for organic matter in removing zinc hydrometallurgy solution according to claim 1, it is characterised in that: the stirring turns Speed is 10 ~ 120 revs/min.
6. the method for organic matter in removing zinc hydrometallurgy solution according to claim 1, it is characterised in that: described gradually to drop Temperature detailed process are as follows: when beginning with the cooling velocity of 1 ~ 2 DEG C/min be down to temperature be 25 ~ 30 DEG C, then proceed to 2 ~ 5 DEG C/ The cooling velocity of min is down to -20 DEG C ~ 10 DEG C.
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CN111996390A (en) * 2020-08-12 2020-11-27 云南驰宏锌锗股份有限公司 Method for removing fine particles from zinc sulfate solution
CN112030003A (en) * 2020-03-27 2020-12-04 昆明理工大学 Method for simultaneously removing multiple impurity ions in wet-process zinc smelting waste electrolyte
CN113667833A (en) * 2021-08-20 2021-11-19 云南金鼎锌业有限公司 Purification and cadmium removal method for zinc hydrometallurgy

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CN113667833A (en) * 2021-08-20 2021-11-19 云南金鼎锌业有限公司 Purification and cadmium removal method for zinc hydrometallurgy

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