CN110106353A - A kind of short route leaching method of zinc abstraction - Google Patents
A kind of short route leaching method of zinc abstraction Download PDFInfo
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- CN110106353A CN110106353A CN201910435282.0A CN201910435282A CN110106353A CN 110106353 A CN110106353 A CN 110106353A CN 201910435282 A CN201910435282 A CN 201910435282A CN 110106353 A CN110106353 A CN 110106353A
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- zinc
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- ore pulp
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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
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
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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
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
-
- 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
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacturing & Machinery (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention belongs to zinc abstraction technical field more particularly to a kind of zinc abstraction short route leaching methods, specifically includes the following steps: S1. carries out neutral leaching to zinc abstraction calcining, the underflow after concentrator is concentrated carries out high temperature high acidic oils, obtain peracid ore pulp；S2. the peracid ore pulp heavy iron reactive tank is fed directly to by acidleach storage tank pump to carry out spraying heavy iron；S3. the ore pulp that peracid ore pulp sprays after sinking iron will be obtained after S2 is handled to be concentrated through concentrator, after underflow uses the filters pressing of aperture chamber type filter press, obtains zinc leaching residue and filtrate.The three stages acid leach of secondary zinc oxide and calcining high acidic oils are sunk ironworker's sequence and are combined into one by the invention, pickle liquor sink iron while complete the leaching of secondary zinc oxide, simplify process.Impurity elements, these impurity such as fluorine, chlorine, arsenic, the antimony in secondary zinc oxide can also be removed while spraying heavy iron to enter leached mud and open a way together, and instead of corresponding removal of impurities process.
Description
Technical field
The invention belongs to zinc abstraction technical field more particularly to a kind of zinc abstraction short routes suitable for wet zinc smelter industry
Leaching method.
Background technique
Currently, China's zinc abstraction technique, based on hydrometallurgy.The conventional process that leaches of wet method smelting process is zinc concentrate
Oxidizing roasting → leaching → electro-deposition → zinc product.Conventional leach is the technique the most mature in zinc abstraction, and zinc hydrometallurgy is in work
Take advantage status in industry.Largely rise the eighties in last century high temperature peracid configuration: yellow potassium iron sail method, conversion method, goethite process,
The different process of the heavy iron process of hematite process etc., the oxygen pressure directly leached there are also zinc concentrate and normobaric oxygen soaking technology.
The conventional process that leaches need to configure Rotary Kiln, and the secondary zinc oxide of Rotary Kiln output is after multiple hearth furnace defluorinate chlorine, into independent
Secondary zinc oxide leaching system, leachate return calcining in soaks；High temperature peracid, oxygen leaching are both needed to the complicated leaching of configuration, sink
Flowing molten iron journey.Substantially processing step is divided into: 4-5 steps such as middle leaching, low acidleach, high acidleach and removing iron from solution, for synthetical recovery
It is convenient, 2-3 kinds of slags of general output.Process is complicated, there is long flow path, invests big, high production cost, wet process Slag treatment difficulty
The problems such as.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to propose to a kind of simplified zinc abstractions to leach process, give full play to lead
Zinc coproduction advantage, three steps for using leaching-high acidic oils in calcining-ore pulp to spray heavy iron (making neutralizer with secondary zinc oxide) leach
Calcining is leached and secondary zinc oxide leaches two processes and is combined into one by technique, and a kind of short route of the zinc abstraction of combination leaches
Method.
The technical scheme is that a kind of short route leaching method of zinc abstraction, specifically includes the following steps:
S1. neutral leaching is carried out to zinc abstraction calcining, the underflow after concentrator is concentrated carries out high temperature high acidic oils, obtains height
Sour ore pulp；
S2. the peracid ore pulp heavy iron reactive tank is fed directly to by acidleach storage tank pump to carry out spraying heavy iron；
S3. the ore pulp that peracid ore pulp sprays after sinking iron will be obtained after S2 is handled to be concentrated through concentrator, underflow uses diaphragm case
After formula filter press filters pressing, zinc leaching residue and filtrate are obtained.
According to the embodiment of the present disclosure, the S1's specifically comprises the processes of: the high temperature high acidic oils technique is in temperature 85-95
DEG C, it is leaching with zinc electrolytic waste liquid (150-200g/l containing acid, containing zinc 45-50g/l) under conditions of 60-80 revs/min of stirring intensity
Preceding liquid out soaks underflow (middle phase analysis) in addition, guarantees reaction 4-6 hours, terminal acidity 30-50g/l.
According to the embodiment of the present disclosure, the specific steps of the S2 are as follows: with secondary zinc oxide after alkali cleaning defluorinate chlorine, conveying of sizing mixing
It is used to heavy iron reactive tank is sprayed as neutralizer, usage amount 60-100g/l, 80-90 DEG C of temperature, stirring intensity 60-80 turns/
Minute under conditions of, peracid ore pulp scatter by 2-5 position be uniformly added into secondary zinc oxide pulp liquid for preceding liquid ore pulp in,
Reaction 3-5 hours, terminal PH2.5-3.5, solution contain Fe3+Less than 1.0g/l.
According to the embodiment of the present disclosure, the specific steps of the S3 are as follows: it is heavy that peracid ore pulp spray will be obtained after S2 is handled
Ore pulp after iron is concentrated through concentrator, and supernatant goes to soak in calcining and use, after underflow uses the filters pressing of aperture chamber type filter press, filtrate
Secondary zinc oxide is gone to size mixing use, Zinc in Leaching Residue can achieve the percentage composition of 9.5-11.5%(solid material), it is aqueous to drop
As low as 16.5-18.5wt%.
According to the embodiment of the present disclosure, the middle supernatant of the S1 is purified, and → electro-deposition → prepares zinc ingot metal.
It can control by a kind of short route calcining leaching method of zinc abstraction of the present invention treated acid leaching residue containing zinc
9.5-11.5%, zinc direct yield is 87--90%.Heavy iron process forming portion minute hand iron ore, the absorption using goethite to anion
Effect, can be effectively controlled the impurity such as fluorine, chlorine, arsenic, the antimony of leachate.A kind of only slag of output, and iron precipitates as goethite, slag
Strainability is good, filters pulp PH value 2.5-3.5, slag is aqueous to be can control 16.5-18.5%.
The three stages acid leach of secondary zinc oxide and calcining high acidic oils are sunk iron by a kind of short route leaching method of zinc abstraction of the present invention
Process is combined into one, pickle liquor sink iron while complete secondary zinc oxide leaching, simplify process.
A kind of short route calcining leaching method of zinc abstraction of the present invention is the optimization that iron (EZ method) technique is removed to goethite spray
The heavy iron of goethite is completed, in the same of heavy iron using directly spraying acid leaching ore pulp to the method in secondary zinc oxide ore pulp with development
When can also remove impurity elements, these impurity such as fluorine, chlorine, arsenic, antimony in secondary zinc oxide and enter scum and open a way together, and instead of
Corresponding removal of impurities process.
Detailed description of the invention
Fig. 1 is the zinc abstraction calcining leaching stream block diagram of the prior art.
Fig. 2 is a kind of flow diagram of the short route leaching method of zinc abstraction of the present invention.
Specific embodiment
Technical scheme is described further combined with specific embodiments below.
As shown in Fig. 2, a kind of short route leaching method of zinc abstraction of the present invention, specifically includes the following steps:
S1. neutral leaching is carried out to zinc abstraction calcining, the underflow after concentrator is concentrated carries out high temperature high acidic oils, obtains height
Sour ore pulp；
S2. the peracid ore pulp heavy iron reactive tank is fed directly to by acidleach storage tank pump to carry out spraying heavy iron；
S3. the ore pulp that peracid ore pulp sprays after sinking iron will be obtained after S2 is handled to be concentrated through concentrator, underflow uses diaphragm case
After formula filter press filters pressing, zinc leaching residue and filtrate are obtained.
According to the embodiment of the present disclosure, high temperature high acidic oils technique in the S1:
At 85-95 DEG C of temperature, 60-80 revs/min of stirring intensity of condition is liquid before leaching with zinc electrolytic waste liquid, is uniformly added into
Middle leaching underflow is reacted 4-6 hours, terminal acidity 30-50g/l.
According to the embodiment of the present disclosure, the S2's specifically comprises the processes of: neutralizer is added to heavy iron reactive tank is sprayed, in temperature
Under conditions of being 80-90 DEG C, 60-80 revs/min of stirring intensity, peracid ore pulp is added in multi-point dispersion, is reacted 3-5 hours, terminal
PH2.5-3.5, solution contain Fe3+Less than 1.0g/l.
According to the embodiment of the present disclosure, the 150-200g/l containing acid, the 45-50g/l containing zinc of the zinc electrolytic waste liquid.
According to the embodiment of the present disclosure, the neutralizer is the secondary zinc oxide after alkali cleaning defluorinate chlorine, additional amount 60-
100g/l。
According to the embodiment of the present disclosure, the addition points that peracid ore pulp is added in the multi-point dispersion are 2-5.
According to the embodiment of the present disclosure, zinc content can reach 9.5-11.5% in the zinc leaching residue, aqueous to be reduced to
16.5-18.5%。
According to the embodiment of the present disclosure, is used in the S2 and directly spray acid leaching ore pulp to the side in secondary zinc oxide ore pulp
Method completes the heavy iron of goethite, fluorine, chlorine, arsenic, the stilba prime element in secondary zinc oxide can be removed while heavy iron.
Embodiment 1:
S1. take in calcining leaching thickened underflow ore pulp 1000ml(ore pulp specific gravity 1.62) and zinc electrolytic waste liquid (185g/l containing acid, contain zinc
46.5g/l) 600ml.600ml zinc electrolytic waste liquid is placed in 2000 ml beakers, 90 DEG C of temperature are heated to, in stirring intensity 60
It under conditions of rev/min, is added in 1000ml and soaks underflow, react 6 hours, obtain peracid ore pulp 1500ml, survey solution containing acid
45.2g/l, 10.5 g/l of iron content.
S2. it takes certain enterprise secondary zinc oxide ore pulp 3200ml(containing secondary zinc oxide 60g/l), is placed in, in 5000 ml beakers, adds
Heat arrives 90 DEG C of temperature, under conditions of 70 revs/min of stirring intensity, be divided to or so two points, by the speed of 500ml/h, slowly adds
Entering is peracid ore pulp 1500ml made from S1, after 3 hours add, obtains ore pulp 4500ml, measures terminal pH value 3.0.
S3. it by ore pulp made from S2, is filtered by vacuum, filterability is good, and assay solution contains Fe3+850mg/l.Slag drying
Chemical examination contains zinc 9.8% afterwards.
Embodiment 2:
S1. take in calcining leaching thickened underflow ore pulp 1000ml(ore pulp specific gravity 1.62) and zinc electrolytic waste liquid (200g/l containing acid, contain zinc
50g/l) 600ml.600ml zinc electrolytic waste liquid is placed in 2000 ml beakers, is heated to 90 DEG C of temperature, 80 turns of stirring intensity/
It under conditions of minute, is added in 1000ml and soaks underflow, react 4 hours, obtain peracid ore pulp 1500ml, survey solution 46.8g/l containing acid,
Iron content 9.8g/l.
S2 takes certain enterprise secondary zinc oxide ore pulp 3500ml(containing secondary zinc oxide 95g/l), is placed in, in 5000 ml beakers, heating
To 85 DEG C of temperature, under conditions of 75 revs/min of stirring intensity, two points are uniformly divided into, by the speed of 400ml/h, are slowly added
Enter peracid ore pulp 1500ml made from S1, after 3.5 hours add, obtains ore pulp 5000ml, measure terminal pH value 3.5.
Ore pulp made from S2 is filtered by vacuum S3, and filterability is good, and assay solution contains Fe3+570mg/l.Slag drying
Chemical examination contains zinc 10.4% afterwards.
Lead and zinc smelting complex enterprise original design in Jiangxi Province's leaches process using the zinc abstraction calcining such as Fig. 1, sends out in production
Existing process flow is long, and equipment purposes is more, and the quantity of slag is big.It is difficult solution calcining acid leaching residue to ask containing zinc height, the fluorine-containing chlorine of zinc oxide, arsenic antimony etc.
Inscribe process.It is changed to after leaching process such as the novel zinc abstraction calcining of Fig. 2, uses leaching in calcining-high temperature high acidic oils-with secondary
After zinc oxide makees the three stages acid leach technique that neutralizer ore pulp is directly sprayed except iron, iron process forming portion minute hand iron ore is sunk, utilize needle
Suction-operated of the iron ore to anion and arsenic antimony, effectively controls the impurity such as fluorine, chlorine, arsenic, the antimony of leachate.It is acid by improving
9.5-11.5% is greatly reduced containing zinc in slag by the process conditions such as temperature, the acidity of leaching.In the case where not increasing equipment, very
Good solves the problems, such as two above.
1, zinc abstraction calcining leaches process and carries out high temperature high acidic oils, high temperature high acidic oils work to leaching thickened underflow in calcining
Skill is liquid before leaching with zinc electrolytic waste liquid, soaks in addition under conditions of 85-95 DEG C of temperature, 60-80 revs/min of stirring intensity
Underflow (middle phase analysis) guarantees reaction time 4-6 hours, terminal acidity 30-50g/l；
2, peracid ore pulp is fed directly to heavy iron reactive tank by acidleach storage tank pump and carries out spraying heavy iron；Secondary zinc oxide is through alkali cleaning defluorinate
After chlorine, sizing mixing is delivered to the heavy iron reactive tank of spray and uses as neutralizer.Heavy iron process is sprayed at 80-90 DEG C of temperature, stirring is strong
Under conditions of 60-80 revs/min of degree, peracid ore pulp scatter be uniformly added by 4-5 position and be with secondary zinc oxide pulp liquid before
In the ore pulp of liquid, guarantee reaction time 3-5 hours, terminal PH2.5-3.5, solution is less than 1.0g/l containing Fe3+.
3, the ore pulp that peracid ore pulp sprays after sinking iron is concentrated through concentrator, and supernatant goes to soak in calcining and use, and underflow uses
After aperture chamber type filter press filters pressing, filtrate goes secondary zinc oxide to size mixing use, and Zinc in Leaching Residue can achieve, and 9.5-11.5%, contain
Water can be reduced to 16.5-18.5%.A kind of only slag of output, and iron precipitates as goethite, filters pulp PH value 2.5-
3.5, small to the corrosion of filter plant, slag strainability is good.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be with
It is realized by other structures, feature of the invention is not limited to above-mentioned preferred embodiment.It is any to be familiar with this technology
Personnel are in technical field of the invention, the changes or modifications that can be readily occurred in, and should all cover in patent protection model of the invention
Within enclosing.
Claims (9)
1. a kind of short route leaching method of zinc abstraction, which is characterized in that specifically includes the following steps:
S1. neutral leaching is carried out to zinc abstraction calcining, the underflow after concentrator is concentrated carries out high temperature high acidic oils, obtains peracid
Ore pulp and middle supernatant；
S2. the peracid ore pulp heavy iron reactive tank is fed directly to by acidleach storage tank pump to carry out spraying heavy iron；
S3. the ore pulp that peracid ore pulp sprays after sinking iron will be obtained after S2 is handled to be concentrated through concentrator, underflow uses diaphragm case
After formula filter press filters pressing, zinc leaching residue and filtrate are obtained.
2. short route leaching method according to claim 1, which is characterized in that the high temperature high acidic oils work in the S1
Skill:
At 85-95 DEG C of temperature, 60-80 revs/min of stirring intensity of condition is liquid before leaching with zinc electrolytic waste liquid, soaks in addition
Thickened underflow reacts 4-6 hours, terminal acidity 30-50g/l.
3. short route leaching method according to claim 1, which is characterized in that the S2's specifically comprises the processes of: to heavy iron
Neutralizer is added in reactive tank, and under conditions of temperature is 80-90 DEG C, 60-80 revs/min of stirring intensity, S1 is added in multi-point dispersion
Peracid ore pulp is prepared, reacts 3-5 hours, terminal pH2.5-3.5, solution contains Fe3+Less than 1.0g/l.
4. short route leaching method according to claim 2, which is characterized in that the acid content of the zinc electrolytic waste liquid are as follows:
150-200g/l, zinc content are as follows: 45-50g/l.
5. short route leaching method according to claim 3, which is characterized in that the neutralizer is after alkali cleaning defluorinate chlorine
Secondary zinc oxide, additional amount 60-100g/l.
6. short route leaching method according to claim 3, which is characterized in that peracid ore pulp is added in the multi-point dispersion
It is 2-5 that points, which are added,.
7. short route leaching method according to claim 1, which is characterized in that zinc content is reachable in the zinc leaching residue
It is aqueous to be reduced to 16.5-18.5wt% to 9.5-11.5%.
8. short route leaching method according to claim 1, which is characterized in that using acid leaching ore pulp is direct in the S2
It sprays in secondary zinc oxide ore pulp, completes the heavy iron of goethite, fluorine, chlorine, arsenic, the antimony in secondary zinc oxide can be removed while heavy iron
Impurity element.
9. short route leaching method according to claim 1, which is characterized in that the middle supernatant of the S1 is purified → electric
Deposit → prepare zinc ingot metal.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101609081B1 (en) | 2011-08-19 | 2016-04-04 | 그리 일렉트릭 어플라이언시즈, 인코포레이티드 오브 주하이 | Air conditioner |
| CN112845176A (en) * | 2021-02-08 | 2021-05-28 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Automatic impurity removing machine for conveying copper concentrate by belt |
| CN114058871A (en) * | 2021-11-16 | 2022-02-18 | 安徽铜冠有色金属（池州）有限责任公司 | Method for removing F in zinc hydrometallurgy system by using spray iron deposition process-、Al3+Method (2) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567996A (en) * | 2016-02-01 | 2016-05-11 | 长沙有色冶金设计研究院有限公司 | Method for removing fluorine and chlorine in zinc electrolyte through partial iron precipitation of goethite |
-
2019
- 2019-05-23 CN CN201910435282.0A patent/CN110106353B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567996A (en) * | 2016-02-01 | 2016-05-11 | 长沙有色冶金设计研究院有限公司 | Method for removing fluorine and chlorine in zinc electrolyte through partial iron precipitation of goethite |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101609081B1 (en) | 2011-08-19 | 2016-04-04 | 그리 일렉트릭 어플라이언시즈, 인코포레이티드 오브 주하이 | Air conditioner |
| CN112845176A (en) * | 2021-02-08 | 2021-05-28 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Automatic impurity removing machine for conveying copper concentrate by belt |
| CN112845176B (en) * | 2021-02-08 | 2022-06-03 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Automatic impurity removing machine for conveying copper concentrate by belt |
| CN114058871A (en) * | 2021-11-16 | 2022-02-18 | 安徽铜冠有色金属（池州）有限责任公司 | Method for removing F in zinc hydrometallurgy system by using spray iron deposition process-、Al3+Method (2) |
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Effective date of registration: 20220130 Address after: Hukou hi tech Industrial Park, Jiujiang County, Jiangxi Province Patentee after: Jiangxi copper lead zinc metal Co.,Ltd. Address before: No.15, metallurgy Avenue, Guixi City, Yingtan City, Jiangxi Province Patentee before: Jiangxi Copper Co.,Ltd. |
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