CN108728667A - A kind of method that oxygen removes iron - Google Patents
A kind of method that oxygen removes iron Download PDFInfo
- Publication number
- CN108728667A CN108728667A CN201810534277.0A CN201810534277A CN108728667A CN 108728667 A CN108728667 A CN 108728667A CN 201810534277 A CN201810534277 A CN 201810534277A CN 108728667 A CN108728667 A CN 108728667A
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- CN
- China
- Prior art keywords
- oxygen
- iron
- zinc
- reactor
- removes iron
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Classifications
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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
-
- 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
-
- 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
Abstract
The invention discloses a kind of methods that oxygen removes iron, are related to technical field of wet metallurgy.The method that the oxygen removes iron, includes the following steps：(1) by the control of the pH value of the zinc-copper mixed solution in reactor between 2.9~3.2；(2) oxygen is conveyed to the bottom of reactor by stirring axis center, oxygen and zinc-copper mixed solution are sufficiently mixed using stirring shearing force；(3) it is separated by filtration the product that step (2) obtains to obtain solution and scum.The method that the oxygen of the present invention removes iron, carries high oxygen concentration to 75% or more, and germanium of the oxygen utilization rate in 90% or more, solution, arsenic, antimony, fluorine removal efficiency are 80% or more, and 99% or more iron removal efficiency, scum is containing 8% or less zinc, 0.5% or less cupric.
Description
Technical field
The present invention relates to technical field of wet metallurgy, and in particular to a kind of method that oxygen removes iron.
Background technology
Except iron is the important topic of wet method zinc abstraction, roasting in wet method zinc abstraction, leach, purification, electrodeposition and founding it is basic
Identical, unique difference is to produce various wet method zinc abstraction technological processes using different method for removing iron.Wet method zinc abstraction removes
Iron process can be summarized as two major class：One kind is the pyrogenic attack leached mud technique using conventional method as representative, which only produces
A kind of waste (iron content) cures slag venting with pyrogenic process, and waste is convenient for stockpiling and sale, but that there are zinc leaching rates is low, energy consumption is big, low
The problems such as concentration SO2 flue gases need to be handled, it is another kind of using the high acid system of high temperature as the wet-treating leached mud technique (autunezite of representative
Method, goethite process, hematite process), which is two kinds of wastes of production, another one is from leaching underflow output high acid leach residue
It is to remove iron output scum from supernatant, special cinder field stockpiling is needed due to being wet method slag, it is unfavorable to environmental protection.
Oxygen except iron be mainly ferrous oxidising at ferric iron in solution, the application mainly by hydrolytic precipitation,
Achieve the purpose that removing.In process of production, since oxygen is dense too low, oxygen is unevenly distributed, and oxygen utilization rate is only 60% left side
The right side, except iron rate is 80% or so, while scum iron content is low, and containing zinc 15% or more, 1% or more cupric, metal loss is big.
Invention content
In view of the above-mentioned problems, it is necessary to provide a kind of methods that oxygen removes iron.The method that the oxygen removes iron, carries high oxygen concentration and arrives
75% or more, germanium of the oxygen utilization rate in 90% or more, solution, arsenic, antimony, fluorine removal efficiency are 80% or more, iron removal efficiency
99% or more, scum is containing 8% or less zinc, 0.5% or less cupric.
In order to achieve the above objectives, the technical solution adopted in the present invention is：
A kind of method that oxygen removes iron, includes the following steps：
(1) by the control of the pH value of the zinc-copper mixed solution in reactor between 2.9~3.2；
(2) oxygen is conveyed to the bottom of reactor by stirring axis center, oxygen and zinc-copper are mixed using stirring shearing force
Solution is closed to be sufficiently mixed；
(3) product that step (2) obtains is separated by filtration and respectively obtains solution and scum.
Preferably, in the step (1), the pH value of zinc-copper mixed solution is controlled using calcining.
Preferably, in the step (2), the agitating shaft is vertically arranged with the reactor.
Preferably, in the step (3), product that step (2) obtains is led to except carrying out precipitation separation in iron concentrator.
Due to the adoption of the above technical scheme, the invention has the advantages that：
The method that the oxygen of the present invention removes iron, carries high oxygen concentration to 75% or more, oxygen utilization rate is in 90% or more, solution
Germanium, arsenic, antimony, fluorine removal efficiency 80% or more, 99% or more iron removal efficiency, scum containing 8% or less zinc, cupric 0.5% hereinafter,
Reduce metal loss.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1：
A kind of method that oxygen removes iron, includes the following steps：
(1) calcining is used to control the pH value of the zinc-copper mixed solution in reactor 2.9；
(2) agitating shaft is vertically arranged with reactor, and oxygen is conveyed to the bottom of reactor by stirring axis center, using stirring
Shearing force is mixed to be sufficiently mixed oxygen and zinc-copper mixed solution；
(3) product that step (2) obtains is led to except carrying out precipitation separation in iron concentrator, and be separated by filtration respectively
To solution and scum.
Embodiment 2：
A kind of method that oxygen removes iron, includes the following steps：
(1) calcining is used to control the pH value of the zinc-copper mixed solution in reactor 3；
(2) agitating shaft is vertically arranged with reactor, and oxygen is conveyed to the bottom of reactor by stirring axis center, using stirring
Shearing force is mixed to be sufficiently mixed oxygen and zinc-copper mixed solution；
(3) product that step (2) obtains is led to except carrying out precipitation separation in iron concentrator, and be separated by filtration respectively
To solution and scum.
Embodiment 3：
A kind of method that oxygen removes iron, includes the following steps：
(1) calcining is used to control the pH value of the zinc-copper mixed solution in reactor 3.1；
(2) agitating shaft is vertically arranged with reactor, and oxygen is conveyed to the bottom of reactor by stirring axis center, using stirring
Shearing force is mixed to be sufficiently mixed oxygen and zinc-copper mixed solution；
(3) product that step (2) obtains is led to except carrying out precipitation separation in iron concentrator, and be separated by filtration respectively
To solution and scum.
Embodiment 4：
A kind of method that oxygen removes iron, includes the following steps：
(1) calcining is used to control the pH value of the zinc-copper mixed solution in reactor 3.2；
(2) agitating shaft is vertically arranged with reactor, and oxygen is conveyed to the bottom of reactor by stirring axis center, using stirring
Shearing force is mixed to be sufficiently mixed oxygen and zinc-copper mixed solution；
(3) product that step (2) obtains is led to except carrying out precipitation separation in iron concentrator, and be separated by filtration respectively
To solution and scum.
The applicant has done the reaction test that a large amount of oxygen remove iron during the test, now arranges part test as follows：
2016~2017 years, Nandan South Nonferrous Metals Co., Ltd.'s root of Hechi City in Guangxi Zhuang Autonomous Region
It is repeated a number of times experiment according to 1~embodiment of embodiment 4, experiment sets 11 test groups, obtains the result of table 1 altogether.
Each achievement data of the de-ironing efficiency of 1 oxygen iron removal of table
Wherein, inspected by random samples from the 1st group, the 2nd group and the 3rd group of table 1, obtain table 2 as a result, as follows：
Each achievement data of the dust removal rate of 2 oxygen iron removal of table
| Ge(mg/l) | As(mg/l) | Sb(mg/l) | F(mg/l) | |
| Except liquid before iron | 3.2 | 86 | 54 | 87 |
| Except liquid after iron | 0.5 | 8 | 3 | 15 |
| Removal efficiency (%) | 84.3 | 90.6 | 94.4 | 82.7 |
The removal efficiencies such as germanium, arsenic, antimony, the fluorine in solution be can be seen that by two above table 80% or more, iron removal efficiency
99% or more, while scum can be reduced containing 8% or less zinc, cupric 0.5% hereinafter, basically reaching desired effect.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the claims of the present invention.
Claims (4)
1. a kind of method that oxygen removes iron, which is characterized in that include the following steps：
(1) by the control of the pH value of the zinc-copper mixed solution in reactor between 2.9~3.2；
(2) conveying oxygen by stirring axis center arrives the bottom of reactor, using stir shearing force oxygen mixed with zinc-copper it is molten
Liquid is sufficiently mixed；
(3) product that step (2) obtains is separated by filtration and respectively obtains solution and scum.
2. the method that oxygen as described in claim 1 removes iron, it is characterised in that：In the step (1), zinc is controlled using calcining
The pH value of copper mixed solution.
3. the method that oxygen as described in claim 1 removes iron, it is characterised in that：In the step (2), the agitating shaft and institute
Reactor is stated to be vertically arranged.
4. the method that oxygen as described in claim 1 removes iron, it is characterised in that：In the step (3), step (2) obtains
Product is led to except carrying out precipitation separation in iron concentrator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810534277.0A CN108728667A (en) | 2018-05-29 | 2018-05-29 | A kind of method that oxygen removes iron |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810534277.0A CN108728667A (en) | 2018-05-29 | 2018-05-29 | A kind of method that oxygen removes iron |
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| CN108728667A true CN108728667A (en) | 2018-11-02 |
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| CN201810534277.0A Pending CN108728667A (en) | 2018-05-29 | 2018-05-29 | A kind of method that oxygen removes iron |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560087A (en) * | 2012-03-23 | 2012-07-11 | 广西冶金研究院 | Method for extracting indium and zinc from high-iron indium-containing zinc calcine and preparing iron oxide |
| CN102586601A (en) * | 2012-03-09 | 2012-07-18 | 大兴安岭云冶矿业开发有限公司 | Method for removing iron by utilizing autoclave during zinc hydrometallurgy production |
| CN103834818A (en) * | 2014-03-17 | 2014-06-04 | 长沙有色冶金设计研究院有限公司 | Oxygen adding system and method for reactor iron removing |
| CN106011468A (en) * | 2016-06-13 | 2016-10-12 | 云南祥云飞龙再生科技股份有限公司 | Method for removing ferrous ions from iron-containing zinc sulfate solution by using industrial enriched oxygen |
| CN106868295A (en) * | 2016-12-27 | 2017-06-20 | 河南豫光锌业有限公司 | The starting method of hematite process iron removal system in a kind of Zinc hydrometallurgy process |
| CN206494958U (en) * | 2016-11-29 | 2017-09-15 | 云锡文山锌铟冶炼有限公司 | Iron removal system for zinc hydrometallurgy |
-
2018
- 2018-05-29 CN CN201810534277.0A patent/CN108728667A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586601A (en) * | 2012-03-09 | 2012-07-18 | 大兴安岭云冶矿业开发有限公司 | Method for removing iron by utilizing autoclave during zinc hydrometallurgy production |
| CN102560087A (en) * | 2012-03-23 | 2012-07-11 | 广西冶金研究院 | Method for extracting indium and zinc from high-iron indium-containing zinc calcine and preparing iron oxide |
| CN103834818A (en) * | 2014-03-17 | 2014-06-04 | 长沙有色冶金设计研究院有限公司 | Oxygen adding system and method for reactor iron removing |
| CN103834818B (en) * | 2014-03-17 | 2015-04-08 | 长沙有色冶金设计研究院有限公司 | Oxygen adding system and method for reactor iron removing |
| CN106011468A (en) * | 2016-06-13 | 2016-10-12 | 云南祥云飞龙再生科技股份有限公司 | Method for removing ferrous ions from iron-containing zinc sulfate solution by using industrial enriched oxygen |
| CN206494958U (en) * | 2016-11-29 | 2017-09-15 | 云锡文山锌铟冶炼有限公司 | Iron removal system for zinc hydrometallurgy |
| CN106868295A (en) * | 2016-12-27 | 2017-06-20 | 河南豫光锌业有限公司 | The starting method of hematite process iron removal system in a kind of Zinc hydrometallurgy process |
Non-Patent Citations (1)
| Title |
|---|
| 陈家镛: "《湿法冶金手册》", 30 September 2005 * |
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Application publication date: 20181102 |