CN108220618A - Arsenic-fixing and copper-extracting method for high-arsenic copper sulfide ore - Google Patents
Arsenic-fixing and copper-extracting method for high-arsenic copper sulfide ore Download PDFInfo
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- CN108220618A CN108220618A CN201810054490.1A CN201810054490A CN108220618A CN 108220618 A CN108220618 A CN 108220618A CN 201810054490 A CN201810054490 A CN 201810054490A CN 108220618 A CN108220618 A CN 108220618A
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- copper
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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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0084—Treating solutions
- C22B15/0089—Treating solutions by chemical methods
- C22B15/0093—Treating solutions by chemical methods by gases, e.g. hydrogen or hydrogen sulfide
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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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Abstract
The invention discloses a method for fixing arsenic and extracting copper from high-arsenic copper sulfide ores, which aims at the high-arsenic copper sulfide ores, in particular to a method for fixing arsenic and extracting copper from copper ores taking tennantite and enargite as main bodies; the invention fully utilizes the dissolving behavior of tennantite and enargite in a sulfuric acid system, and harmful arsenic is easy to be oxidized under the condition of high temperature and oxygen enrichment to generate chemically stable ferric arsenate; developing a method for extracting copper from solid arsenic by taking a hot-pressing oxidation technology As a support and combining a Fe/As proportioning principle; the method adopts a closed water circulation wet process, no waste water and waste gas are discharged, As in the raw materials is present in the tailings in the form of arsenate-ferric arsenate with the best chemical stability, and other Fe and S which have potential influence on the environment are also present in the tailings in the form of stable calcium sulfate, basic ferric sulfate and the like; in conclusion, the method expands the application field of the hot-pressing oxidation technology, and provides a clean and environment-friendly new process for the utilization of the resource of the refractory high-arsenic copper sulfide ore.
Description
Technical field
Solid arsenic the present invention relates to mineral products industry carries copper technology, specifically, is directed to tennantite or enargite
Based on copper mine a kind of high arsenic copper-sulphide ores solid arsenic copper extraction method.
Background technology
Copper is the pillar raw material of the development of the national economy, with the rapid development of the national economy, the demand to copper
It continues to increase.With the continuous exploitation of copper mine, the increasingly depleted of disposable copper ore resource, account for world's copper resource 15% contains pozzuolite
The exploitation for changing copper ore resource is increasingly taken seriously.If using traditional pyrometallurgical smelting or the such copper of Chemical Leaching process
Ore deposit will generate the largely three wastes containing arsenic, if not proposing, reasonably recycling or removing method will bring a series of environmental protection, safety
Problem or even directly threaten health.As global environment requires harshness increasingly, the processing of the concentrate containing arsenical copper certainly will be proposed
Higher requirement, respective handling cost also will be higher and higher.Therefore, carry out the research of Copper ore containing arsenic comprehensive utilization technique, no matter from
Expand resource reserve range and still select smelting economic benefit, environmental protection etc. from raising, all have a very important significance.
Identified copper sulfide mineral containing arsenic is mainly tennantite Cu in nature3AsS3With enargite Cu3AsS4；
Two kinds of copper-sulphide ores containing arsenic are not only containing valuable metallic copper, but also contain harmful element arsenic, and chemical property is stablized, in effectively recycling copper
Control element arsenic is the main contents of such mineral resources research to the harm of environment simultaneously.At present, for above-mentioned high pozzuolite
The technique road of the processing method generally use floating and enriching-pyrometallurgical smelting-fume recovery arsenic and sulphur of copper mine-solid phase recycling copper
Line also has the case using acid system/alkaline Leaching technique and biological oxidation extract technology.Wherein, thermal process technology maturation, effect
Fruit is good and synthetical recovery multiple element, but stranded environmental protection standard is increasingly harsh, gas cost recovery is high and arsenic product preservation sale
The problems such as difficult；Biological oxidation extract technology is because at low cost, environmentally friendly（Smokeless）, arsenic solidification effect it is good and by extensive
Concern, but there are reaction speed is slow, the rate of recovery is low and the problems such as bad adaptability；Acid system/alkaline Leaching technique then has to environment
It is friendly（Smokeless）, the significant advantages such as arsenic solidification effect is good, reaction speed is fast, by with the raising of environmental protection standard and by
It is more and more to pay attention to.
The solid arsenic bearing aastes of mineral exploration and exploitation process output give up to environment structure significant threat, mainly fraction solids containing arsenic
Material has larger solubility（Arsenic trioxide solubility 10g/L）, under the effects that rainwater it is transferable enter body of groundwater, and then
It damages to human health.Various countries' researcher found by years of researches, the various preservations of the solid waste containing arsenic
With ferric arsenate in form（Scorodite）Form is stablized the most, has under the conditions of simulation autoxidation, weathering and dissolving etc. long-term
Stability does not constitute a threat to surrounding enviroment.
The purpose of the present invention is carrying out hot-pressure oxidation processing by adding adjuvant, the stable curing of arsenic and the height of copper are realized
Effect recycling, and then a kind of New Process for Treatment of high arsenic copper-sulphide ores is provided.
Invention content
The present invention, for the synthetical recovery and environmental issue of high arsenic copper-sulphide ores, is provided to overcome above-mentioned technical problem
A kind of solid arsenic copper extraction method of high arsenic copper-sulphide ores carries out hot-pressure oxidation processing, and then reach solid arsenic and carry by adding adjuvant
The purpose of copper, to solve the problems, such as that arsenic present in current high arsenic copper sulfide extraction process cures difficult, copper leaching rate is low etc..
Technical scheme is as follows：
A kind of solid arsenic copper extraction method of high arsenic copper-sulphide ores, comprises the following steps that：
A, the high arsenic copper-sulphide ores concentrate obtained through ore-dressing technique and iron powder are matched into ore deposit in certain Fe/As ratios, and adds water again
Mill obtains ore pulp, and the ore pulp reaches relatively narrow pan feeding grade；
B, the ore pulp in surge tank is acidified with putting forward copper lean solution, hot pressing rework solution mixes, carry out vapour heating, and add sulfuric acid
And sodium lignin sulfonate；
C, the ore pulp that step B is obtained is delivered to hot-pressure oxidation reaction kettle, and Hot-pressing Oxygen is carried out under setting condition with high-pressure pump
Change reaction；Ore pulp after the completion of reaction is through flash column recovered steam heat, and return to step B is used for vapour heating, after cooling
Ore pulp enter diversion channel；
D, the fraction pulp return to step B in the diversion channel for obtaining step C be acidified and is sized mixing, and remainder ore pulp enters iron
Recycling and solid-liquid separation process, solid slag phase enter Tailings Dam storage, and cupric liquid phase enters extraction and separation process, the iron after recycling
Return to step B is used；
E, cupric liquid phase carries out carrying copper using techniques such as extraction/displacement/ion exchanges, carries the lean solution return to step B after copper.
Fe/As ratios in the step A are 1.5-2.0, and the additive amount of iron powder or iron-bearing mineral is according to high pozzuolite
The chemistry of copper mine concentrate calculates what is obtained with material phase analysis data, and the purpose is to harmful element As is existed with excessive element of Fe
The good precipitated ferric arsenate of chemical stabilization is generated in hot-pressure oxidation reaction process.
In the step A, iron powder can also be other iron ores, such as bloodstone, magnetic iron ore or pyrite etc..
In the step A, the product obtained with ore deposit is regrinded to 90% particle effective diameter and is less than 75 microns, the purpose is to
Copper efficiency is put forward convenient for the solid arsenic in control hot-pressure oxidation reaction.
In the step B, it is acidified a concentration of 30-50% of ore pulp in surge tank（w/w）, the free sulfur inhibitor of addition is wood
Quality sodium sulfonate, sulfuric acid additive amount by test determine, with hot-pressure oxidation after reaction liquid phase sulfuric acid content in 1-2mol/L models
In enclosing.
In the step C, the temperature range of the hot-pressure oxidation reaction is 150-180 DEG C, partial pressure of oxygen ranging from 0.5-
1.5Mpa, isothermal reaction time 60-120min, temperature control method are air temperature control.The setting of above-mentioned reaction condition mainly controls
The generation of free sulfur improves oxidation reaction speed and reduces equipment requirement.
Main chemical reactions in the step C are as follows：
Above-mentioned chemical equation describes mainly object inversion of phases of the copper sulfide mineral containing arsenic during hot-pressure oxidation, while is step
The calculating of sulfuric acid usage amount in rapid B provides theoretical foundation.
In the step D, ore pulp back amount is 15-30% in diversion channel（w/w）, the step is primarily to improve solid arsenic
Efficiency simultaneously reduces free sulfur generation.
The features of the present invention and advantageous effect include：
（1）It carries out matching ore deposit by Fe/As ratios, harmful element As is then with ferric arsenate during hot-pressure oxidation（Scorodite）Stable form
Curing, and significantly improve the rate of recovery of copper.
（2）It is regrinded by high arsenic copper-sulphide ores concentrate and iron powder etc., controls the uniformity of material size, convenient for control
Solid arsenic in hot-pressure oxidation reaction puies forward copper efficiency.
（3）By adjusting the sulfuric acid concentration of pan feeding ore pulp, while the curing efficiency for ensureing As, solves slightly solubility copper
Sedimentation problem.
（4）By hot-pressure oxidation mode, the high-efficiency environment friendly for realizing high arsenic copper sulfide utilizes, and is the green choosing of clean and effective
Smelting process.
Description of the drawings
Fig. 1 is the principle of the present invention process flow chart.
Specific embodiment
As shown in Figure 1, a kind of technological process of the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to the present invention.Below
Technical scheme of the present invention is described in further detail in conjunction with specific embodiments, but protection scope of the present invention is not limited to
This.
Test process object is the high arsenic copper-sulphide ores in Yunnan mine, in the sample ore THE RECOGNITION OF MAIN COPPER be tennantite,
Chalcopyrite and a small amount of vitreous copper, covellite, main arsenic-containing ores are tennantite and mispickel.
Exploitated ore 1, and be sent to ore dressing operating process 2 according to known methods first, by tennantite in beneficiation flowsheet
Based on copper mineral and the enrichments such as mispickel be high arsenic copper-sulphide ores concentrate, which is obtained by analysis of chemical elements
In Fe/As ratios, the iron-bearing minerals such as iron powder 3 are incorporated in concentrate by Fe/As=2.
Secondly the product after preparing is regrinded through ball mill/rod mill 4 to 90% particle effective diameter and is less than 74 microns（I.e.
The Tyler screen that 90% particle passes through 200 mesh）.Ore pulp after regrinding is transferred to surge tank 5, and adds in sulfuric acid, sodium lignin sulfonate and return
Then the liquid returned is transferred to progress hot-pressure oxidation reaction in autoclave 6 through high-pressure pump.Ore pulp warp after hot-pressure oxidation reaction
Flash column 7 shunts after cooling down into diversion channel 8, and fraction returns to acidification surge tank, most of to enter iron recycling 9 and separation of solid and liquid
10 flows.
Solid phase after last separation of solid and liquid is sent directly into Tailings Dam 11, and liquid phase, which enters Extraction electrodeposition and puies forward copper flow 12, processes
Electro deposited copper is obtained, lean solution returns to surge tank and reuses.
As can be seen that the present invention makes full use of the advantage of hot-pressure oxidation technology, in high temperature and richness from above-mentioned implementation
To contain arsenic copper sulfide mineral Quick Oxidation under the conditions of oxygen, and with ferric arsenate chemical stability by harmful element arsenic and cheap iron
Element combines, and avoids the combination of copper and arsenic, while improve the leaching rate of copper.The application of this method can be significantly expanded heat
The application range of oxidation technology is pressed, the advantages such as the short route of the technology and clean environment firendly are more shown.Meanwhile also will
More Copper ore containing arsenic resources release, and increase using metal reserves.
Claims (8)
- A kind of 1. solid arsenic copper extraction method of high arsenic copper-sulphide ores, it is characterised in that following processing step：A, by high arsenic copper-sulphide ores concentrate and iron powder or iron-bearing mineral in certain Fe/As ratios with ore deposit, and pair and water is added to regrind Ore pulp is obtained, the ore pulp reaches pan feeding grade, and the Fe/As ratios are 1.5-2.0；B, the ore pulp mixes in surge tank is acidified with putting forward copper lean solution and hot pressing rework solution, carries out vapour heating, and add sulphur Acid and sodium lignin sulfonate；C, the pulp conveying that step B is obtained to hot-pressure oxidation reaction kettle is subjected to hot-pressure oxidation reaction, hot-pressure oxidation reaction is completed Afterwards, to ore pulp through carrying out heat recovery so that the vapour heating described in step B uses, ore pulp after cooling enters diversion channel；D, the fraction pulp return to step B in the diversion channel for obtaining step C be acidified and is sized mixing, and remainder ore pulp enters iron Recycling and solid-liquid separation process, solid slag phase enter Tailings Dam storage, and cupric liquid phase enters extraction and separation process, the iron after recycling Return to step B is used；E, cupric liquid phase carries out carrying copper using techniques such as extraction/displacement/ion exchanges, carries the lean solution return to step B after copper.
- 2. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：Fe/As is pressed in step A What ratio was matched after ore deposit described regrind requirement and is：90% particle effective diameter is less than 75 microns.
- 3. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：Iron described in step A Powder or iron-bearing mineral are bloodstone, magnetic iron ore or pyrite.
- 4. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：Sulfuric acid in step B Additive amount is obtained with the sulfuric acid concentration Extrapolation of the hot-pressure oxidation reaction end in step C, and reaction end sulfuric acid content is in 1- In the range of 2mol/L.
- 5. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：Acidification in step B Pulp density w/w is in surge tank：30-50%.
- 6. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：Hot pressing in step C Ranging from 150-180 DEG C of oxidizing reaction temperature, partial pressure of oxygen ranging from 0.5-1.5Mpa, isothermal reaction time are 60-120min, are controlled Warm mode is air temperature control.
- 7. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：Diversion channel in step D Ore pulp amount w/w in middle return to step B is：15-30%.
- 8. the solid arsenic copper extraction method of high arsenic copper-sulphide ores according to claim 1, it is characterised in that：To reaction in step D Tailings afterwards has carried out iron recycling, and the iron return to step A of recycling is used.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810054490.1A CN108220618A (en) | 2018-01-19 | 2018-01-19 | Arsenic-fixing and copper-extracting method for high-arsenic copper sulfide ore |
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| CN201810054490.1A CN108220618A (en) | 2018-01-19 | 2018-01-19 | Arsenic-fixing and copper-extracting method for high-arsenic copper sulfide ore |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097579A (en) * | 2018-08-01 | 2018-12-28 | 昆明理工大学 | A kind of supercritical water treatment method of arsenic sulfide slag |
| CN110436527A (en) * | 2019-08-18 | 2019-11-12 | 桂林理工大学 | A kind of method of hydrothermal synthesis alkalinity arsenic acid-ferric sulfate solid solution |
| CN111715411A (en) * | 2020-07-01 | 2020-09-29 | 中南大学 | Beneficiation method for high-sulfur lead-zinc ore |
| CN112985946A (en) * | 2021-03-10 | 2021-06-18 | 南京海关工业产品检测中心 | Detection method for judging oxidation degree of copper concentrate containing bornite |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455007A (en) * | 2003-01-16 | 2003-11-12 | 云南锡业集团有限责任公司 | Arsonium-containing cupric sulfide concentrate smelting process by wet method |
| WO2009068735A1 (en) * | 2007-11-27 | 2009-06-04 | Outotec Oyj | Method for processing pyritic concentrate containing gold, copper and arsenic |
| CN106048251A (en) * | 2016-06-21 | 2016-10-26 | 昆明冶金研究院 | Technological method for cleaning and efficiently treating arsenic matte |
| CN106460089A (en) * | 2014-05-13 | 2017-02-22 | 泰克资源公司 | Process for recovery of copper from arsenic-bearing and/or antimony-bearing copper sulphide concentrates |
| CN107557592A (en) * | 2017-08-11 | 2018-01-09 | 中南大学 | Copper arsenic separating technology in a kind of high concn. arsenic and lead matte |
| CN107574305A (en) * | 2017-08-11 | 2018-01-12 | 中南大学 | A kind of high concn. arsenic and lead matte Recovering Copper and sulphur technique |
-
2018
- 2018-01-19 CN CN201810054490.1A patent/CN108220618A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455007A (en) * | 2003-01-16 | 2003-11-12 | 云南锡业集团有限责任公司 | Arsonium-containing cupric sulfide concentrate smelting process by wet method |
| WO2009068735A1 (en) * | 2007-11-27 | 2009-06-04 | Outotec Oyj | Method for processing pyritic concentrate containing gold, copper and arsenic |
| CN106460089A (en) * | 2014-05-13 | 2017-02-22 | 泰克资源公司 | Process for recovery of copper from arsenic-bearing and/or antimony-bearing copper sulphide concentrates |
| CN106048251A (en) * | 2016-06-21 | 2016-10-26 | 昆明冶金研究院 | Technological method for cleaning and efficiently treating arsenic matte |
| CN107557592A (en) * | 2017-08-11 | 2018-01-09 | 中南大学 | Copper arsenic separating technology in a kind of high concn. arsenic and lead matte |
| CN107574305A (en) * | 2017-08-11 | 2018-01-12 | 中南大学 | A kind of high concn. arsenic and lead matte Recovering Copper and sulphur technique |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097579A (en) * | 2018-08-01 | 2018-12-28 | 昆明理工大学 | A kind of supercritical water treatment method of arsenic sulfide slag |
| CN110436527A (en) * | 2019-08-18 | 2019-11-12 | 桂林理工大学 | A kind of method of hydrothermal synthesis alkalinity arsenic acid-ferric sulfate solid solution |
| CN111715411A (en) * | 2020-07-01 | 2020-09-29 | 中南大学 | Beneficiation method for high-sulfur lead-zinc ore |
| CN111715411B (en) * | 2020-07-01 | 2021-08-27 | 中南大学 | Beneficiation method for high-sulfur lead-zinc ore |
| CN112985946A (en) * | 2021-03-10 | 2021-06-18 | 南京海关工业产品检测中心 | Detection method for judging oxidation degree of copper concentrate containing bornite |
| CN112985946B (en) * | 2021-03-10 | 2022-03-08 | 南京海关工业产品检测中心 | Detection method for judging oxidation degree of copper concentrate containing bornite |
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Application publication date: 20180629 |