CN115404353A - Method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy - Google Patents
Method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy Download PDFInfo
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- CN115404353A CN115404353A CN202211230180.3A CN202211230180A CN115404353A CN 115404353 A CN115404353 A CN 115404353A CN 202211230180 A CN202211230180 A CN 202211230180A CN 115404353 A CN115404353 A CN 115404353A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
- C22B3/24—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
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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 invention discloses a method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy, and relates to the technical field of metallurgy. The invention comprises the following steps: s1: pretreating the activated carbon; s2: pretreating a zinc hydrometallurgy solution; s3: putting activated carbon with the total activated carbon consumption of 50% into a first adsorption tank, uniformly mixing the activated carbon with the activated carbon by mechanical stirring equipment, performing ultrasonic treatment by ultrasonic equipment, performing filter pressing after adsorption is finished, sending filter residues to a roasting furnace to serve as fuel, and pumping filtrate to a second adsorption tank; s4: and (3) adding the rest 50% of activated carbon into the second adsorption tank, uniformly mixing the activated carbon by using mechanical stirring equipment, performing ultrasonic treatment by using ultrasonic equipment, performing filter pressing after adsorption is finished, feeding filter residues into a roasting furnace to serve as fuel, and pumping filtrate to perform zinc electrodeposition. The invention realizes that the efficiency of the active carbon for adsorbing organic matters is improved from 6-8% to 15% by adding the active carbon in sections under the same input of the active carbon, thereby effectively reducing the total consumption of the active carbon and the production cost.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy.
Background
The zinc hydrometallurgy refers to a process of dissolving zinc in zinc calcine or other zinc sulfide materials and zinc in zinc sulfide concentrate in an aqueous solution and extracting metal zinc or zinc compounds from the zinc calcine or other zinc sulfide materials and zinc sulfide concentrate, and is a modern zinc hydrometallurgy main method. Consists of three large links of zinc leaching, purification from zinc solution and zinc electrolytic deposition. The zinc hydrometallurgy mainly comprises the working procedures of roasting, leaching, leachate purification, electrodeposition and the like.
In zinc hydrometallurgy, due to changes of processes and raw materials, a solution often contains organic matters, activated carbon is usually added for adsorption, and the adsorption of the organic matters is more favorable as the added active amount is larger, but the adsorption efficiency of the organic matters is poorer at present, and a sufficient amount of activated carbon is usually added at one time, and is fully stirred to adsorb the organic matters at a certain operation temperature and operation time, and the adsorption efficiency of the organic matters is only 6-8%. Aiming at the problem of poor organic matter adsorption efficiency of activated carbon, the invention provides a method for improving the organic matter adsorption efficiency of a solution, so as to solve the problem.
Disclosure of Invention
The invention aims to provide a method for improving the organic matter adsorption efficiency of a solution in zinc hydrometallurgy, which realizes that the organic matter adsorption efficiency of activated carbon is improved from 6-8% to 15% by adding activated carbon in sections under the condition of the same input of activated carbon, the adsorption efficiency is improved, the total consumption of the activated carbon is effectively reduced, and the production cost is effectively reduced.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy, which comprises the following steps:
s1: pretreating the activated carbon;
s2: pretreating a zinc hydrometallurgy solution;
s3: putting active carbon with the total active carbon consumption of 50% into the first adsorption tank, uniformly mixing the active carbon by mechanical stirring equipment, performing ultrasonic treatment by ultrasonic equipment, performing filter pressing after adsorption is finished, sending filter residues to a roasting furnace to serve as fuel, and pumping filtrate to a second adsorption tank;
s4: and (3) adding the rest 50% of activated carbon into the second adsorption tank, uniformly mixing the activated carbon by using mechanical stirring equipment, performing ultrasonic treatment by using ultrasonic equipment, performing filter pressing after adsorption is finished, feeding filter residues into a roasting furnace to serve as fuel, and pumping filtrate to perform zinc electrodeposition.
Further, the specific steps of the activated carbon pretreatment in the S1 comprise:
s11: crushing the large-particle activated carbon into small particles of 30-80nm by an activated carbon crusher;
s12: and (4) putting the crushed activated carbon into a heating box, and heating the activated carbon.
Further, the specific steps of the temperature increasing process in S12 include:
s121: firstly, heating the activated carbon to 120 ℃ by electric heating equipment, and preserving heat for 8-10min to remove volatile components on the activated carbon;
s122: and heating the activated carbon to 150-180 ℃ by microwave equipment, and preserving heat for 5-6min to fully activate the activated carbon.
Further, the specific steps of pretreatment of the zinc hydrometallurgy solution in S2 comprise:
s21: fully and uniformly stirring the solution by mechanical stirring equipment;
s22: and then carrying out ultrasonic treatment on the solution by ultrasonic equipment for 7-9min.
Further, when the activated carbon in the S3 is put in, the activated carbon is firstly uniformly divided into 3-5 equal parts and then put in 3-5 times, the activated carbon is uniformly scattered to each position of the first adsorption tank during each putting, and after each putting, the activated carbon is firstly uniformly mixed by a mechanical stirring device and then is further subjected to ultrasonic treatment by an ultrasonic device.
And further, when the activated carbon in the S4 is put in, the activated carbon is uniformly divided into 3-5 equal parts, then the activated carbon is put in 3-5 times, the activated carbon is uniformly scattered to each position of the second adsorption tank during each putting, and after each putting, the activated carbon is uniformly mixed by a mechanical stirring device and then is subjected to further ultrasonic treatment by an ultrasonic device.
The invention has the following beneficial effects:
1. according to the invention, on the premise of not changing the total input amount of the activated carbon and other operation conditions, the activated carbon is added in sections, so that the organic matter adsorption efficiency is improved, the organic matter adsorption efficiency of the activated carbon can be improved from 6-8% to 15%, the total consumption of the activated carbon is effectively reduced, and the production cost is effectively reduced.
2. According to the invention, by pretreating the activated carbon, the powdery activated carbon can be more fully contacted with the solution, and the microwave high temperature can fully activate the activated carbon, so that the adsorption capacity of the activated carbon is improved.
3. According to the invention, the zinc hydrometallurgy solution is pretreated, and the solution is subjected to the cavitation action of ultrasonic waves, so that the adsorption action of the activated carbon on organic matters is more scientific and effective, the working time period of the activated carbon is prolonged, and the adsorption efficiency of the activated carbon is improved.
4. According to the invention, the active carbon is added into the first adsorption tank and the second adsorption tank for multiple times, and ultrasonic-assisted adsorption is adopted, so that the active carbon can be further fully contacted with the solution, uniform mixing of heterogeneous reactants is realized, diffusion is accelerated, organic matters in the solution can be adsorbed more quickly, the adsorption rate can be improved by ultrasonic energy, and the adsorption time is shortened.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below.
The invention relates to a method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy, which comprises the following steps:
s1: the method for pretreating the activated carbon comprises the following specific steps:
s11: crushing the large-particle activated carbon into small particles of 30-80nm by an activated carbon crusher, wherein the powdery activated carbon can be more fully contacted with the solution;
s12: putting the crushed activated carbon into a heating box, heating the activated carbon to 120 ℃ through electric heating equipment, preserving heat for 8-10min, removing volatile components on the activated carbon, heating the activated carbon to 150-180 ℃ through microwave equipment, preserving heat for 5-6min, fully activating the activated carbon, regenerating the powdery activated carbon through heating, improving the utilization effect, and greatly improving the adsorption capacity of the activated carbon through full microwave activation;
s2: the zinc hydrometallurgy solution is pretreated, and after the solution passes through the cavitation of ultrasonic waves, the adsorption of the organic matters by the activated carbon is more scientific and effective, the working time period of the activated carbon is prolonged, the adsorption efficiency of the activated carbon is improved, and the method comprises the following specific steps:
s21: fully and uniformly stirring the solution by mechanical stirring equipment;
s22: then carrying out ultrasonic treatment on the solution by ultrasonic equipment, wherein the ultrasonic time is 7-9min;
s3: putting activated carbon with 50% of total activated carbon consumption into a first adsorption tank, uniformly mixing the activated carbon by mechanical stirring equipment, performing ultrasonic treatment by ultrasonic equipment, performing filter pressing after adsorption is finished, sending filter residues to a roasting furnace to serve as fuel, and pumping filtrate to a second adsorption tank, wherein when the activated carbon is put in, the activated carbon is uniformly divided into 3-5 equal parts and then put in 3-5 times, the activated carbon is uniformly scattered to each position of the first adsorption tank when the activated carbon is put in each time, the activated carbon is uniformly mixed by the mechanical stirring equipment after each time of putting in, further ultrasonic treatment is performed by the ultrasonic equipment, the activated carbon is added for multiple times, and ultrasonic-assisted adsorption is performed, so that the activated carbon can be in full contact with a solution, uniform mixing and diffusion acceleration of heterogeneous reactants are realized, organic matters in the solution can be adsorbed more quickly, the adsorption rate can be increased by ultrasonic waves, and the adsorption time can be shortened;
s4: the method comprises the steps of putting the rest 50% of activated carbon into a second adsorption tank, uniformly mixing the activated carbon through mechanical stirring equipment, performing ultrasonic treatment through ultrasonic equipment, performing filter pressing after adsorption is completed, sending filter residues to a roasting furnace to serve as fuel, pumping filtrate to perform zinc electrodeposition, wherein when the activated carbon is put in, the activated carbon is uniformly divided into 3-5 equal parts, then putting the activated carbon 3-5 times, uniformly scattering the activated carbon to each position of the second adsorption tank when the activated carbon is put in each time, uniformly mixing the activated carbon through the mechanical stirring equipment after the activated carbon is put in each time, performing further ultrasonic treatment through the ultrasonic equipment, adding the activated carbon for multiple times, performing ultrasonic-assisted adsorption, fully contacting the activated carbon with a solution, uniformly mixing heterogeneous reactants, accelerating diffusion, quickly adsorbing organic matters in the solution, improving the adsorption rate and shortening the adsorption time through ultrasonic waves.
The following table shows the specific experimental data for the plant of this example:
according to the invention, on the premise of not changing the total input amount of the active carbon and other operating conditions, the adsorption efficiency of the organic matters is improved by adding the active carbon in sections, and the adsorption efficiency of the active carbon on the organic matters can be improved from 6-8% to 15%.
The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions and improvements of some technical features, which are made to the technical solutions described in the above embodiments, are all within the scope of the present invention.
Claims (6)
1. A method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy is characterized in that: the method comprises the following steps:
s1: pretreating the activated carbon;
s2: pretreating the zinc hydrometallurgy solution;
s3: putting activated carbon with the total activated carbon consumption of 50% into a first adsorption tank, uniformly mixing the activated carbon with the activated carbon by mechanical stirring equipment, performing ultrasonic treatment by ultrasonic equipment, performing filter pressing after adsorption is finished, sending filter residues to a roasting furnace to serve as fuel, and pumping filtrate to a second adsorption tank;
s4: and (3) adding the rest 50% of activated carbon into the second adsorption tank, uniformly mixing the activated carbon by using mechanical stirring equipment, performing ultrasonic treatment by using ultrasonic equipment, performing filter pressing after adsorption is finished, feeding filter residues into a roasting furnace to serve as fuel, and pumping filtrate to perform zinc electrodeposition.
2. The method for improving the solution organic matter adsorption efficiency in zinc hydrometallurgy according to claim 1, wherein the specific steps of activated carbon pretreatment in S1 comprise:
s11: crushing the large-particle activated carbon into small particles of 30-80nm by an activated carbon crusher;
s12: and (4) putting the crushed activated carbon into a heating box, and heating the activated carbon.
3. The method for improving the solution organic matter adsorption efficiency through zinc hydrometallurgy according to claim 2, wherein the specific step of the temperature rise treatment in the S12 comprises the following steps:
s121: firstly, heating the activated carbon to 120 ℃ by electric heating equipment, and preserving heat for 8-10min to remove volatile components on the activated carbon;
s122: and heating the activated carbon to 150-180 ℃ by microwave equipment, and preserving heat for 5-6min to fully activate the activated carbon.
4. The method for improving the organic matter adsorption efficiency of the zinc hydrometallurgy solution according to claim 1, wherein the specific steps of the pretreatment of the zinc hydrometallurgy solution in the step S2 comprise:
s21: fully stirring the solution by mechanical stirring equipment;
s22: and then carrying out ultrasonic treatment on the solution by ultrasonic equipment, wherein the ultrasonic time is 7-9min.
5. The method for improving the solution organic matter adsorption efficiency through zinc hydrometallurgy according to claim 1, characterized in that when activated carbon is thrown in S3, the activated carbon is evenly divided into 3-5 equal parts and then thrown in 3-5 times, the activated carbon is evenly scattered to each position of the first adsorption tank during each throwing, and after each throwing, the activated carbon is evenly mixed through mechanical stirring equipment and then is subjected to further ultrasonic treatment through ultrasonic equipment.
6. The method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy according to claim 1, wherein in S4, the activated carbon is uniformly divided into 3-5 equal portions and then is added 3-5 times, the activated carbon is uniformly sprayed to each position of the second adsorption tank in each adding, and after each adding, the activated carbon is uniformly mixed by a mechanical stirring device and then is subjected to further ultrasonic treatment by an ultrasonic device.
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| CN202211230180.3A CN115404353A (en) | 2022-10-08 | 2022-10-08 | Method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy |
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| CN202211230180.3A CN115404353A (en) | 2022-10-08 | 2022-10-08 | Method for improving solution organic matter adsorption efficiency in zinc hydrometallurgy |
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Citations (6)
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| CN102206752A (en) * | 2011-05-20 | 2011-10-05 | 昆明理工大学 | Method for removing organic matter contained in supernatant liquor obtained from zinc hydrometallurgy through active carbons |
| CN103451449A (en) * | 2013-08-30 | 2013-12-18 | 红河锌联科技发展有限公司 | Activation extraction separation method for fluorine and chloride ions in zinc sulfate solution |
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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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2022
- 2022-10-08 CN CN202211230180.3A patent/CN115404353A/en active Pending
Patent Citations (6)
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| CN101768452A (en) * | 2009-02-23 | 2010-07-07 | 深圳市兖能投资管理有限公司 | System for making coal gas and/or activated carbon with sorted garbage as raw material, and device and method thereof |
| CN102206752A (en) * | 2011-05-20 | 2011-10-05 | 昆明理工大学 | Method for removing organic matter contained in supernatant liquor obtained from zinc hydrometallurgy through active carbons |
| CN103451449A (en) * | 2013-08-30 | 2013-12-18 | 红河锌联科技发展有限公司 | Activation extraction separation method for fluorine and chloride ions in zinc sulfate solution |
| CN110624501A (en) * | 2019-08-28 | 2019-12-31 | 江苏中科睿赛污染控制工程有限公司 | Adsorbent for strengthening radon removal and adsorption purification device |
| WO2021084119A1 (en) * | 2019-10-31 | 2021-05-06 | Biokol Lilliestråle & Co Kb | A process for removing micropollutants in liquid or gas |
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