CN110512076A - A kind of reduction method of replacing of the lean cadmium solution containing cadmium - Google Patents
A kind of reduction method of replacing of the lean cadmium solution containing cadmium Download PDFInfo
- Publication number
- CN110512076A CN110512076A CN201910715186.1A CN201910715186A CN110512076A CN 110512076 A CN110512076 A CN 110512076A CN 201910715186 A CN201910715186 A CN 201910715186A CN 110512076 A CN110512076 A CN 110512076A
- Authority
- CN
- China
- Prior art keywords
- cadmium
- liquid
- cake
- lean
- press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- C22B17/00—Obtaining cadmium
- C22B17/04—Obtaining cadmium by wet processes
-
- 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
-
- 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
- C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
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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
Abstract
The present invention relates to a kind of reduction method of replacing of the lean cadmium solution containing cadmium, belong to zinc technical field of wet metallurgy；A kind of method that can reduce lean cadmium solution containing cadmium while ensuring Spongy Cadmium cake of press one-pass molding rate, rich cadmium liquid once replace cake of press, a twice replaced cake of press of displaced liquid, and twice replaced rear liquid is replaced three times except residual cadmium returns copper-cadmium slag leaching.The medicine have the advantages that ensureing ensures Spongy Cadmium cake of press one-pass molding rate while lean cadmium solution contains cadmium≤100mg/l premise, principle is simple, and expense is low, easy to implement, realizes that lean cadmium solution is substantially improved containing cadmium≤100mg/l and cadmium cake yield.
Description
Technical field
The invention belongs to zinc hydrometallurgy fields.It is related to a kind of reduction method of replacing of the lean cadmium solution containing cadmium while ensures Spongy Cadmium
The method of cake of press one-pass molding rate.
Background technique
Currently, in replacement process of the lean cadmium solution containing cadmium, there are the following problems: excessive, Spongy Cadmium pressure is added in primary displacement zinc powder
Cake does not form, and to pack Cheng Chongxin displacement of backflowing, and cost increases；Primary displacement zinc powder additional amount is inadequate, causes after once replacing
Liquid is high containing cadmium, increases twice replaced zinc powder investment, and twice replaced Spongy Cadmium, without cake of press condition, the Cheng Chongxin that can only backflow soaks
Out；Twice replaced bucket internal cause Spongy Cadmium amount is big during journey of backflowing, and is easy blocking delivery pump and conveyance conduit；Therefore, secondary Pin
It changes a cake of press technique and is difficult to realize lean cadmium solution containing cadmium≤100mg/l.
Summary of the invention
In order to solve the problems, such as that background technique, the present invention reduce lean cadmium solution using novel method of replacing and contain cadmium.
Another object of the present invention is to solve the problems, such as lean cadmium solution containing a kind of substitute mode that cadmium is high and invents.
In order to achieve the above objectives, the technical scheme is that a kind of novel method of replacing of the reduction lean cadmium solution containing cadmium,
Cake of press, a twice replaced cake of press of displaced liquid are once replaced by rich cadmium liquid, twice replaced rear liquid is replaced three times except residual cadmium returns copper
Cadmium slag leaches.
It is characterized in that guaranteeing Spongy Cadmium cake of press one-pass molding rate while reducing lean cadmium solution and containing cadmium≤100mg/l.
When larger for the high cadmium liquid analytical error of richness containing cadmium, primary zinc powder additional amount of replacing is by the rich cadmium liquid cadmium content of analysis
30%-40% is added, and rear liquid pump enters twice replaced bucket, and Spongy Cadmium is put into slag frame cake of press.
It, will by, containing cadmium, zinc dust precipitation being accurately added again by a displaced liquid cadmium content to a displaced liquid analysis
Cadmium is removed to≤1000mg/l, and rear liquid pump enters replaces bucket three times, and Spongy Cadmium is put into slag frame cake of press.
Will it is twice replaced after liquid 1000-1500mg/l containing cadmium solution zincification powder substitution to containing cadmium≤100mg/l, it is rear hydraulic
Leaching process is returned after filter, copper-cadmium slag leaching is returned in underflow.
The application zinc dust precipitation removes the cardinal principle of cadmium are as follows: and it is different according to the electrode potential of metal, with the more negative gold of current potential
Belong to the cadmium of zinc displacement calibration.In copper-rich cadmium liquid, the additional amount of control displacement zinc powder makes the zinc powder being added sufficiently participate in displacement cadmium
Reaction achieve the purpose that improve the content of cadmium metal in replacement slag except cadmium.
Increase the bucket of displacement three times, the production of twice replaced bucket lower section of a same volume in original Equipment Foundations at the scene
One Spongy Cadmium frame installs a belted electronic balance on twice replaced bucket simultaneously.By substitute mode three times, make inside solution
Cadmium sufficiently and zinc dust precipitation, achieve the purpose that lean cadmium solution containing cadmium≤100mg/l.
The invention has the advantages that:
The invention has the advantages that ensureing ensures Spongy Cadmium cake of press one while lean cadmium solution contains cadmium≤100mg/l premise
Secondary ratio of briquetting, principle is simple, and expense is low, easy to implement, realizes that lean cadmium solution is substantially improved containing cadmium≤100mg/l and cadmium cake yield.
Detailed description of the invention
Fig. 1 is flow diagram of the invention.
Specific embodiment
In conjunction with Fig. 1, it is pumped into primary displacement after rich cadmium liquid sampling analysis, zinc is added by the 30%-40% of rich cadmium liquid cadmium content
Powder, operation are completed, and a displaced liquid is pumped into twice replaced bucket, sampling analysis by side valve, underflow be put into Spongy Cadmium slag frame into
Row cake of press.Wait go out according to analysis result after, accurately calculate addition zinc powder by cadmium content, will it is twice replaced after liquid containing cadmium replace to
1000-1500mg/l, twice replaced rear liquid is pumped by side valve replaces bucket three times, and sampling analysis, underflow are equally put into sea again
Continuous cadmium slag frame carries out cake of press, after going out according to analysis result, according to twice replaced residual cadmium content, zinc powder is added and removes cadmium to 100mg/
L or less.Lean cadmium solution send leaching process, replaces underflow three times and returns copper-cadmium slag leaching barrel, leaches again.
Finally, it is stated that preferred embodiment above is only to illustrate the novel technical solution of the present invention rather than limits, to the greatest extent
Pipe has been described in detail the present invention by above preferred embodiment, however, those skilled in the art should understand that, can
To make various changes to it in the form and details, without departing from model defined by claims of the present invention
It encloses.
Claims (5)
1. it is secondary once to replace cake of press, a displaced liquid by rich cadmium liquid for a kind of novel method of replacing of the reduction lean cadmium solution containing cadmium
Cake of press is replaced, twice replaced rear liquid is replaced three times except residual cadmium returns copper-cadmium slag leaching.
2. a kind of novel method of replacing of the reduction lean cadmium solution containing cadmium according to claim 1, it is characterised in that: it is characterized in that
Guarantee Spongy Cadmium cake of press one-pass molding rate while reducing lean cadmium solution and containing cadmium≤100mg/l.
3. a kind of novel method of replacing of the reduction lean cadmium solution containing cadmium according to claim 1, it is characterised in that: contain for height
When cadmium richness cadmium liquid analytical error is larger, primary zinc powder additional amount of replacing is added by the 30%-40% for analyzing rich cadmium liquid cadmium content, after
Liquid pump enters twice replaced bucket, and Spongy Cadmium is put into slag frame cake of press.
4. a kind of novel method of replacing of the reduction lean cadmium solution containing cadmium according to claim 1, it is characterised in that: by one
Secondary displaced liquid analysis contains cadmium, and zinc dust precipitation is accurately added again by a displaced liquid cadmium content, and cadmium is removed to≤1000mg/l,
Liquid pump enters afterwards replaces bucket three times, and Spongy Cadmium is put into slag frame cake of press.
5. a kind of novel method of replacing of the reduction lean cadmium solution containing cadmium according to claim 1, it is characterised in that: by secondary Pin
The solution zincification powder substitution of rear liquid 1000-1500mg/l containing cadmium is changed to cadmium≤100mg/l is contained, returns leaching process after rear hydraulic filter,
Copper-cadmium slag leaching is returned in underflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715186.1A CN110512076A (en) | 2019-08-02 | 2019-08-02 | A kind of reduction method of replacing of the lean cadmium solution containing cadmium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715186.1A CN110512076A (en) | 2019-08-02 | 2019-08-02 | A kind of reduction method of replacing of the lean cadmium solution containing cadmium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110512076A true CN110512076A (en) | 2019-11-29 |
Family
ID=68624972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910715186.1A Pending CN110512076A (en) | 2019-08-02 | 2019-08-02 | A kind of reduction method of replacing of the lean cadmium solution containing cadmium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110512076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176186A (en) * | 2020-10-18 | 2021-01-05 | 赤峰中色锌业有限公司 | Method for replacing and recycling cadmium in comprehensive purification slag recycling process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382980A (en) * | 2011-11-02 | 2012-03-21 | 郴州丰越环保科技有限公司 | Method for directly purifying cadmium from sponge cadmium |
| CN103740945A (en) * | 2013-12-31 | 2014-04-23 | 河南豫光金铅股份有限公司 | Method for enriching and recycling cadmium from lead smelting system |
| CN107557580A (en) * | 2017-08-18 | 2018-01-09 | 西北矿冶研究院 | Method for removing copper and cadmium by zinc hydrometallurgy purification |
| CN109457122A (en) * | 2018-10-26 | 2019-03-12 | 云南云铜锌业股份有限公司 | A kind of method of the heavy cadmium of control of Electric potentials zinc dust precipitation |
-
2019
- 2019-08-02 CN CN201910715186.1A patent/CN110512076A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382980A (en) * | 2011-11-02 | 2012-03-21 | 郴州丰越环保科技有限公司 | Method for directly purifying cadmium from sponge cadmium |
| CN103740945A (en) * | 2013-12-31 | 2014-04-23 | 河南豫光金铅股份有限公司 | Method for enriching and recycling cadmium from lead smelting system |
| CN107557580A (en) * | 2017-08-18 | 2018-01-09 | 西北矿冶研究院 | Method for removing copper and cadmium by zinc hydrometallurgy purification |
| CN109457122A (en) * | 2018-10-26 | 2019-03-12 | 云南云铜锌业股份有限公司 | A kind of method of the heavy cadmium of control of Electric potentials zinc dust precipitation |
Non-Patent Citations (2)
| Title |
|---|
| 赵剑波: "从铜镉渣中回收镉的某种工艺设计", 《中国金属通报》 * |
| 韦乃团: "锌冶炼铜镉渣制备海绵镉团的生产控制", 《云南化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176186A (en) * | 2020-10-18 | 2021-01-05 | 赤峰中色锌业有限公司 | Method for replacing and recycling cadmium in comprehensive purification slag recycling process |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191129 |
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