CN110106361A - A kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony - Google Patents
A kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony Download PDFInfo
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- CN110106361A CN110106361A CN201910512521.8A CN201910512521A CN110106361A CN 110106361 A CN110106361 A CN 110106361A CN 201910512521 A CN201910512521 A CN 201910512521A CN 110106361 A CN110106361 A CN 110106361A
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- Prior art keywords
- mercury
- antimony
- leaches
- tailing
- leaching
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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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
-
- 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
- C22B43/00—Obtaining mercury
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/008—Wet processes by an alkaline or ammoniacal leaching
-
- 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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony, the following steps are included: mercury content 0.01-2% in mercury tailing, the molding mercury tailings particles of diameter 5-30mm, length 10-100mm are packed into naturally and leach column, using 40-120g/L NaOH and 10-100g/L Na by antimony content 0.01-2%2S is as leachate, and for leachate from inflow above column is leached, bottom outflow enters storage tank, and returns to leaching column by centrifugal pump, leaches flow velocity 3-20mL/min, extraction time 48-144h, extraction temperature 20-60 degree；After leaching, under the conditions of liquid-solid ratio 0.8-1.2:1, leached mud is washed；Mercury leaching rate is higher than 92%, and antimony leaching rate is higher than 70%.The present invention stands extract technology using wet process, and low energy consumption, and leachate can be recycled, and mercury volatilization problems are not present, environmental-friendly；The synchronous high-efficiency that mercury and antimony may be implemented leaches, at low cost, easy to operate；It is adaptable suitable for mercury, the lower tailing of antimony content.
Description
Technical field
The present invention relates to chemical industry metallurgical fields, and in particular to a kind of mercury tailings processing method.
Background technique
Mercury tailing is that mercury ore picks up a kind of waste minerals resource caused by smelting process.Since mercury content is lower in tailing,
It can not be handled using traditional pyrogenic process refining mercury technique, usually carry out stockpiling processing, only Xunyang County, shaanxi Province mercury ore has generated mercury at present
2,300,000 tons of tailing.Containing the various heavies such as mercury, antimony in mercury tailing, under surface weathering and rainfall eluviation effect, will constantly to
Ambient enviroment discharges mercury, seriously pollutes environment.Mercury content is usually higher in mining soil around stockpiling tailing, to local resident's
Life and ecological environment cause great threat, need the detoxification of mercury tailing and safe disposal technology.
Current mercurous tailings processing method mainly has thermal decomposition method, solidification method, vegetation absorption process etc., and wherein thermal decomposition method is
It heats volatile characteristic using mercury to separate mercury, but mercury content is low, energy consumption is high；Solidification method is using solidification and vitrification envelope
Mercury is deposited, due to not separating mercury, there are still the possibility of secondary pollution；Vegetation absorption process is that mercury is adsorbed in vegetation, but cost
Height is also easy to produce secondary pollution.In addition, antimony is often with mercury association, previous mercury tailings glass generally ignores the influence of antimony.
On the other hand, mercury is also the important raw material of the production processes such as catalyst, headlamp.Antimony is as alloy raw material, fire retardant
It is widely applied Deng having.Therefore, in mercury tailings harmless treatment process, the recycling of high value mercury, antimony is realized, it is significant.
Summary of the invention
It is an object of the present invention to provide a kind of methods that mercury tailing synchronous high-efficiency leaches mercury antimony, have both realized mercury tailings harmless
Processing, and recyclable mercury, antimony valuable metal.
A kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony, it is characterised in that the following steps are included: by diameter 5-30mm,
The molding mercury tailings particles of length 10-100mm are packed into naturally leaches column, using 40-120g/L NaOH and 10-100g/L Na2S
As leachate, leachate is from inflow above column is leached, and bottom outflow enters storage tank, and re-enters leaching column by pump, leaching
Flow velocity 3-20mL/min out, extraction time 48-144h, extraction temperature 20-60 degree；After leaching, in liquid-solid ratio 0.8-
Under the conditions of 1.2:1, leached mud is washed；Mercury leaching rate is higher than 92%, and antimony leaching rate is higher than 70%；
The molding mercury tailings particles diameter preferred scope 10-20mm, the length preferred scope 15-50mm；
The NaOH concentration preferred scope 50-80g/L, the Na2S concentration preferences 20-60g/L；
The leaching flow velocity preferred scope 5-15mL/min；
The extraction temperature preferred scope 30-50 degree.
The method of the invention has the advantage, that
(1) extract technology is stood using wet process, low energy consumption, and leachate can be recycled, and mercury volatilization problems, environment is not present
It is friendly；
(2) synchronous high-efficiency that mercury and antimony may be implemented leaches, at low cost, easy to operate；
(3) it is suitable for mercury, the lower tailing of antimony content, it is adaptable.
Specific embodiment
The present invention is discussed in detail referring to specific embodiment, but embodiment below is only limitted to explain the present invention, it is of the invention
Protection scope should include the full content of claim, be not limited only to the present embodiment.
Embodiment 1
Mercury content 0.01% in mercury tailing, antimony content 0.012%, by the molding mercury tailings particles of diameter 5mm, length 2mm
Naturally it is packed into and leaches column, using 40g/L NaOH and 10g/L Na2S is as leachate, and leachate is flowed into from column top is leached, bottom
Portion's outflow enters storage tank, and returns to leaching column by centrifugal pump, leaches flow velocity 5mL/min, extraction time 48h, leaches
20 degree of temperature；After leaching, under the conditions of liquid-solid ratio 0.8:1, leached mud is washed；Mercury leaching rate 93%, antimony leaching rate 75%；
Embodiment 2
Mercury content 2% in mercury tailing, antimony content 1.8% are natural by the molding mercury tailings particles of diameter 10mm, length 50mm
It is packed into and leaches column, using 60g/L NaOH and 40g/L Na2As leachate, leachate flows S from inflow above column, bottom is leached
Enter storage tank out, and leaching column is re-entered by pump, leaches flow velocity 7mL/min, extraction time 144h, extraction temperature 50
Degree；After leaching, under the conditions of liquid-solid ratio 1.2:1, leached mud is washed；Mercury leaching rate 92%, antimony leaching rate 71%；
Embodiment 3
Mercury content 1.2% in mercury tailing, antimony content 0.9%, by diameter 20mm, length 15mm molding mercury tailings particles from
It is so packed into and leaches column, using 50g/L NaOH and 20g/L Na2S is as leachate, and leachate is flowed into from column top is leached, bottom
Outflow enters storage tank, and re-enters leaching column by pump, leaches flow velocity 3mL/min, extraction time 120h, extraction temperature 30
Degree；After leaching, under the conditions of liquid-solid ratio 1:1, leached mud is washed；Mercury leaching rate 93%, antimony leaching rate are higher than 72%；
Embodiment 4
Mercury content 1% in mercury tailing, antimony content 1.1% are natural by the molding mercury tailings particles of diameter 30mm, length 10mm
It is packed into and leaches column, using 80g/L NaOH and 60g/L Na2As leachate, leachate flows S from inflow above column, bottom is leached
Enter storage tank out, and leaching column is re-entered by pump, leaches flow velocity 20mL/min, extraction time 144h, extraction temperature 60
Degree；After leaching, under the conditions of liquid-solid ratio 1:1, leached mud is washed；Mercury leaching rate 90%, antimony leaching rate 70%；
Embodiment 5
Mercury content 0.1% in mercury tailing, antimony content 0.15%, by the molding mercury tailings particles of diameter 10mm, length 100mm
Naturally it is packed into and leaches column, using 120g/L NaOH and 100g/L Na2As leachate, leachate flows into S from column top is leached,
Bottom outflow enters storage tank, and re-enters leaching column by pump, leaches flow velocity 15mL/min, extraction time 96h, leaches temperature
50 degree of degree；After leaching, under the conditions of liquid-solid ratio 1.2:1, leached mud is washed；Mercury leaching rate is higher than 97%, and antimony leaching rate is high
In 74%；
It should be noted that those skilled in the art are that this hair may be implemented completely according to the various embodiments described above of the present invention
Bright independent claims and the full scope of appurtenance, realize process and the same the various embodiments described above of method；And the present invention is not
It elaborates and partly belongs to techniques well known.
The above, part specific embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, appoints
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all cover by what those skilled in the art
Within protection scope of the present invention.
Claims (5)
1. a kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony, it is characterised in that the following steps are included: mercury content in mercury tailing
The molding mercury tailings particles of diameter 5-30mm, length 10-100mm are packed into leaching by 0.01-2%, antimony content 0.01-2% naturally
Column, using 40-120g/L NaOH and 10-100g/L Na2As leachate, leachate flows S from inflow above column, bottom is leached
Enter storage tank out, and leaching column is returned to by centrifugal pump, leaches flow velocity 3-20mL/min, extraction time 48-144h, leaching
Temperature 20-60 degree out；After leaching, under the conditions of liquid-solid ratio 0.8-1.2:1, leached mud is washed；Mercury leaching rate is higher than 92%,
Antimony leaching rate is higher than 70%.
2. the method that a kind of mercury tailing synchronous high-efficiency according to claim 1 leaches mercury antimony, it is characterised in that: the molding
Mercury tailings particles diameter preferred scope 10-20mm, the length preferred scope 15-50mm.
3. the method that a kind of mercury tailing synchronous high-efficiency according to claim 1 leaches mercury antimony, it is characterised in that: the NaOH
Concentration preferences 50-80g/L, the Na2S concentration preferences 20-60g/L.
4. the method that a kind of mercury tailing synchronous high-efficiency according to claim 1 leaches mercury antimony, it is characterised in that: the leaching
Flow velocity preferred scope 5-15mL/min.
5. the method that a kind of mercury tailing synchronous high-efficiency according to claim 1 leaches mercury antimony, it is characterised in that: the leaching
Temperature preferred scope 30-50 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910512521.8A CN110106361A (en) | 2019-06-13 | 2019-06-13 | A kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910512521.8A CN110106361A (en) | 2019-06-13 | 2019-06-13 | A kind of method that mercury tailing synchronous high-efficiency leaches mercury antimony |
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| CN110106361A true CN110106361A (en) | 2019-08-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127962A (en) * | 2022-01-10 | 2022-09-30 | 昆明理工大学 | Static immersion test method for simulating heavy metal release characteristics in mercury tailings |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312940A (en) * | 2017-05-08 | 2017-11-03 | 中科京投环境科技江苏有限公司 | A kind of method that mercury antimony is extracted in mercury antimony composite ore collaboration |
| CN107513612A (en) * | 2017-08-30 | 2017-12-26 | 东北大学 | A kind of method that detoxification treatment is carried out to mercury mine tailing |
| CN107988488A (en) * | 2017-11-24 | 2018-05-04 | 江苏盐城环保科技城重金属防治研究中心 | A kind of method of hydrometallurgic recovery mercury antimony in antimony ore mine tailings from mercury |
-
2019
- 2019-06-13 CN CN201910512521.8A patent/CN110106361A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312940A (en) * | 2017-05-08 | 2017-11-03 | 中科京投环境科技江苏有限公司 | A kind of method that mercury antimony is extracted in mercury antimony composite ore collaboration |
| CN107513612A (en) * | 2017-08-30 | 2017-12-26 | 东北大学 | A kind of method that detoxification treatment is carried out to mercury mine tailing |
| CN107988488A (en) * | 2017-11-24 | 2018-05-04 | 江苏盐城环保科技城重金属防治研究中心 | A kind of method of hydrometallurgic recovery mercury antimony in antimony ore mine tailings from mercury |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127962A (en) * | 2022-01-10 | 2022-09-30 | 昆明理工大学 | Static immersion test method for simulating heavy metal release characteristics in mercury tailings |
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