CN105692752B - Emulsion liquid film for extracting cyanogen Cu in waste water and cyanide and its application method - Google Patents
Emulsion liquid film for extracting cyanogen Cu in waste water and cyanide and its application method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
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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
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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
- 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
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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Abstract
A kind of emulsion liquid film and its application method for extracting cyanogen Cu in waste water and cyanide, raw material components are made of oil phase and water phase, the raw material of the oil phase is extraction carrier, mass transfer modifying agent, diluent and emulsifier, or is extraction carrier, mass transfer modifying agent, stabilizer, diluent and emulsifier；Application method is：（1）Emulsion liquid film for extracting cyanogen Cu in waste water and cyanide is mixed, mechanical agitation dispersion extraction with cyanide wastewater, stands split-phase；（2）The enrichment emulsion breaking that will be obtained after split-phase obtains regeneration oil phase and enrichment water phase, recycling copper and cyanide from enrichment water phase.The method of the present invention efficiently solves the problems, such as accumulation of the copper in cyanidation gold-extracted process Minerals in Cyanide Leaching liquid; also solves the recycling problem of cyaniding waste liquid simultaneously, when cyanide wastewater is handled with increasing economic efficiency and promote the dual value of environmental protection.
Description
Technical field
The invention belongs to environmental protections and Extraction metallurgy field, more particularly to a kind of for extracting cyanogen Cu in waste water and cyaniding
The emulsion liquid film and its application method of object.
Background technology
Cyanidation gold-extracted is the gold extracting method to dominate at present.With the lasting exploitation of gold mine, available gold mine product
Position continuously decreases, and composition of ores is increasingly sophisticated, often contains a large amount of foreign metal such as copper.In cyanidation-leaching process, impurity
Metallic copper tends to vary with gold and leaches together, this causes cyanidation gold-extracted cyanide consumption in the process to increase, and production cost steeply rises.And
And copper contained in cyanating solution gives the processing of subsequent cyanide wastewater to bring very big difficulty again.How effectively to extract in cyaniding tail washings
Valuable constituent such as copper and cyanide, and how the cyanide wastewater of Treatment of Copper, be that current each gold smelting enterprise is faced
Common difficulty.
The method of current existing Treatment of Cyanide-containing Wastewater mainly has acidification absorption method, chemical oxidization method etc., other as at film
Reason technology, ion exchange resin switching technology, abstraction technique are also got the attention in research field.
It is acidified absorption method in acid condition, separates and recovers HCN by operations such as heating, air lift, absorption, have become at present
Work(is used for production practices, but it is low to the rate of recovery of copper, zinc and noble metal to be acidified absorption method.In addition, acidification absorption method operation at
This height.
The method that another kind uses in practice is chemical oxidization method Treatment of Cyanide-containing Wastewater, such as oxychloride method, hydrogen peroxide
Method and Ozone.This method is generally used together with neutralization precipitation process, and valuable metal ingredient contained in waste water often enters
Sludge and can not directly recycle.Treatment of waste water containing cyanogen by hydrogen peroxide oxidation process technique as disclosed in patent CN97101358.6,
And a kind of gold cyaniding enterprise Treatment of cyanogen-contained wastewater disclosed in patent 201410514179.
Be acidified absorption method and chemical oxidization method all has the shortcomings of of high cost, corrosive medium is strong, and equipment investment is big.
Membrane technology is a kind of relatively new wastewater processing technology, and the research of Treatment of Cyanide-containing Wastewater includes hollow-fibre membrane
Decyanation technology and emulsion liquid film abstraction technique；But the anti-pollution ability and reproducibility of film used in hollow-fibre membrane decyanation technology
Etc. still needing to improve, industrial practice otherwise can not be applied to；In contrast, liquid membrane emulsion technology has obtained more concerns.
It is published at present that emulsion liquid film treatment technology is used to have using tri-n-octyl amine as carrier（Patent
201310552613.1）Cyanide wastewater is handled, using two dodecyl amine as carrier, tri-n-octylphosphine oxide is synergic reagent（Specially
Profit 201010282870.4）The gold in cyanating solution is recycled, and uses the extractant with guanidyl functionality（Patent
CN96196903.2）Gold is recycled from cyanating solution.Since emulsion liquid film has big specific surface area, mass transfer velocity is fast, and equipment is anti-
The advantages that corruption is easily solved and is easy to operate is constantly subjected to the concern of researcher.
Rule is extracted since the volume of cyanide wastewater is big, valuable content is low, using traditional mixer-settler equipment
Larger solvent loss and higher operating cost are often resulted in when Treatment of Cyanide-containing Wastewater, therefore it can hardly find practical applications.
In addition, ion exchange resin switching technology has the advantages that selective absorption, but handle the cyanide wastewater of metal impurities
When, metal impurities strong adsorption existing for complex status brings difficulty, greatly in ion exchange resin to the zeolite regeneration of resin
The big saturated adsorption capacity for reducing resin, this disadvantage limit application of the ion exchange resin in cyanide wastewater processing.
Invention content
The object of the present invention is to provide a kind of emulsion liquid film and its users for extracting cyanogen Cu in waste water and cyanide
Method uses oil-soluble ammonium salt for extracted component carrier, adds mass transfer modifying agent, stabilizer, emulsifier, diluent and water phase alkali
Liquid mixing system breast, obtains the WO emulsion film with high stability of high dispersive；It is extracted simultaneously by the emulsion liquid film
Recycle the copper and cyanide in cyanide wastewater；The emulsion liquid film for being enriched with valuable constituent is demulsified after extraction, from enrichment water phase
Middle recycling copper and cyanide, oil phase component return to system breast and recycle.
The raw material components of the emulsion liquid film for extracting cyanogen Cu in waste water and cyanide of the present invention are by oil phase and water phase group
At the raw material of the oil phase is extraction carrier, mass transfer modifying agent, diluent and emulsifier, or is changed for extraction carrier, mass transfer
Property agent, stabilizer, diluent and emulsifier；The extraction carrier is-three capryl of methyl-chlorination ammonium salt, accounts for oil phase totality
Long-pending 1.5 ~ 4%；Mass transfer modifying agent is nonyl phenol and n-dodecanol, and nonyl phenol accounts for the 1.5 ~ 4% of oil phase total volume, positive 12
Alcohol accounts for the 1 ~ 2% of oil phase total volume；Stabilizer is paraffin oil, accounts for the 0 ~ 2% of oil phase total volume；Emulsifier is span80, accounts for raw material
The 5 ~ 10% of total volume, surplus are No. 200 solvent naphthas of diluent.
The water phase of the above-mentioned emulsion liquid film for extracting cyanogen Cu in waste water and cyanide is sodium hydroxide solution or hydrogen-oxygen
Change potassium solution, 0.005 ~ 0.1mol/L of concentration.
The volume ratio of oil phase and water phase is 1 in the above-mentioned emulsion liquid film for extracting cyanogen Cu in waste water and cyanide:1~
2:1。
The preparation method of the above-mentioned emulsion liquid film for extracting cyanogen Cu in waste water and cyanide carries out according to the following steps：
1, prepare the raw material of water phase and oil phase respectively；The raw material of the oil phase is extraction carrier, mass transfer modifying agent, dilution
Agent and emulsifier, or be extraction carrier, mass transfer modifying agent, stabilizer, diluent and emulsifier；
2, extraction carrier and mass transfer modifying agent are dissolved in diluent, when having stabilizer in the raw material of oil phase, extraction is carried
Body, mass transfer modifying agent and stabilizer are dissolved in diluent；Emulsifier will then be added to be uniformly mixed, and obtain oil phase；
3, oil phase is mixed with water conjunction stirring system breast, obtains the emulsion liquid film for extracting cyanogen Cu in waste water and cyanide,
Wherein the volume ratio of oil phase and water phase is 1:1~2:1.
The application method of the above-mentioned emulsion liquid film for extracting cyanogen Cu in waste water and cyanide is：
1, by the emulsion liquid film and cyanide wastewater by volume 1 for extracting cyanogen Cu in waste water and cyanide:（1~10）It is mixed
It closes, and mechanical agitation is disperseed 10 ~ 20min and extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；
2, the enrichment emulsion breaking that will be obtained after split-phase obtains regeneration oil phase and enrichment water phase, is recycled from enrichment water phase
Copper and cyanide.
In above-mentioned application method, cyanide wastewater is the waste water formed in Cyanide Process production process, CN therein
50 ~ 510mg/L of concentration, 20 ~ 250mg/L of concentration of copper.
In above-mentioned application method, copper is present in the form of copper cyanide in enrichment lotion, and treated, and waste water returns
Cyanide Process uses.
In above-mentioned application method, demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature at least 1h；After demulsification, copper and
Cyanide is enriched in enrichment water phase.
In above-mentioned application method, rate of recovery >=96%, CN of copperThe rate of recovery be 29 ~ 95%.
In above-mentioned application method, the regeneration oil phase of acquisition is used as the oil phase in preparation method.
The principle of the present invention is：By-three capryl of methyl-chlorination ammonium salt of the water-insoluble with high extracting power come
The copper cyanide in complex pattern in cyanide wastewater is extracted, while being changed by mass transfer modifying agent nonyl phenol and n-dodecanol
Be apt to its and be stripped performance so that copper and cyanide in cyanide wastewater efficiently, quickly by-three capryl of carrier methyl-ammonium chloride
After salt extraction, while be stripped at once to the inner aqueous phase of liquid film with faster speed so that extraction, stripping process efficient coupling into
Row solves the problems, such as extraction recycling copper and cyanide from cyanide wastewater；Copper is effective in the form of copper cyanide
Ground is enriched in emulsion liquid film, obtains the enrichment lotion of the enrichment valuable component of high concentration, and treated waste water；This method is grasped
Make simplicity, it is at low cost, it is environmental-friendly, have the advantages that while recycling valuable constituent copper and part cyanide.Used oil phase
It can be recycled, treated, and cyanide wastewater is substantially free of copper, can return to former flow and uses, continues with cyanogen root therein, have
Reduce to effect waste water and the outer discharge capacity of waste liquid.
The method of the present invention efficiently solves the problems, such as accumulation of the copper in cyanidation gold-extracted process Minerals in Cyanide Leaching liquid,
Also solves the recycling problem of cyaniding waste liquid simultaneously, when cyanide wastewater handle with increasing economic efficiency and promote environment
The dual value of protection.
Specific implementation mode
- three capryl of methyl used in the embodiment of the present invention-chlorination ammonium salt, nonyl phenol, n-dodecanol, paraffin oil,
span80（Sorbitol anhydride oleate）It is commercial products with No. 200 solvent naphthas.
The emulsifier used in the embodiment of the present invention is GJ-3S type high speed agitator.
The present invention is enriched with the copper in water phase and electrodeposition can be used for cyanide or the method for precipitation recycles.
When preparing the emulsion liquid film for extracting cyanogen Cu in waste water and cyanide in the embodiment of the present invention, it is mixed that emulsifier is added
For the equipment used when closing uniform for emulsifier, mixing speed is 200 ~ 400rpm.
In the embodiment of the present invention, when oil phase is mixed with water conjunction stirring system breast, the equipment used is emulsifier, mixing speed
For 4000 ~ 5000rpm.
Following examples limit the scope of the invention only for further illustrating the present invention.
Embodiment 1
The raw material components of emulsion liquid film for extracting cyanogen Cu in waste water and cyanide are made of oil phase and water phase, oil phase
Raw material is extraction carrier, mass transfer modifying agent, stabilizer, diluent and emulsifier；The extraction carrier is-three caprinoyl of methyl
Base-chlorination ammonium salt, accounts for the 1.5% of oil phase total volume；Mass transfer modifying agent is nonyl phenol and n-dodecanol, and nonyl phenol accounts for oil phase
The 1.5% of total volume, n-dodecanol account for the 1% of oil phase total volume；Stabilizer is paraffin oil, accounts for the 0.5% of oil phase total volume；Emulsification
Agent is span80, accounts for the 5% of raw material total volume, and surplus is No. 200 solvent naphthas of diluent；Water phase is sodium hydroxide solution, concentration
0.005mol/L；The volume ratio of oil phase and water phase is 1:1；
Preparation method is：
Prepare the raw material of water phase and oil phase respectively according to the above ratio；The raw material of the oil phase is extraction carrier, mass transfer changes
Property agent, stabilizer, diluent and emulsifier；
Extraction carrier, mass transfer modifying agent and stabilizer are dissolved in diluent；Emulsifier will then be added to be uniformly mixed, obtain
Oil phase；
Oil phase is mixed with water conjunction stirring system breast, obtains the emulsion liquid film for extracting cyanogen Cu in waste water and cyanide,
The volume ratio of middle oil phase and water phase is 1:1；
Application method is：
It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:1 mixing, and machine
Tool is dispersed with stirring 10min and is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater is cyanogen
Change the waste water formed in extraction of gold process production process, CN thereinConcentration 51mg/L, the concentration 20mg/L of copper；
The enrichment emulsion breaking that will be obtained after split-phase, demulsification are will to be enriched with lotion to be heated to 90 ± 2 DEG C, keep the temperature 1h；It obtains
Oil phase and enrichment water phase are regenerated, recycling copper and cyanide from enrichment water phase；Regeneration oil phase makes as the oil phase in preparation method
With；
Copper is present in the form of copper cyanide in enrichment lotion, the rate of recovery 99.8% of copper, CNThe rate of recovery be 61%；
Treated, and waste water returns to Cyanide Process use.
Embodiment 2
For extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide with embodiment 1, difference is：
The raw material of oil phase is extraction carrier, mass transfer modifying agent, diluent and emulsifier；- three capryl of methyl-chlorination ammonium salt
Account for the 4% of oil phase total volume；Nonyl phenol accounts for the 4% of oil phase total volume, and n-dodecanol accounts for the 2% of oil phase total volume；Span80 is accounted for
The 10% of raw material total volume, surplus are No. 200 solvent naphthas；Water phase is sodium hydroxide solution, concentration 0.1mol/L；Oil phase and water phase
Volume ratio be 2:1；
The preparation method is the same as that of Example 1, and difference is：
（1）Prepare the raw material of water phase and oil phase respectively；The raw material of the oil phase is extraction carrier, mass transfer modifying agent, dilute
Release agent and emulsifier；
（2）Extraction carrier and mass transfer modifying agent are dissolved in diluent；Emulsifier will then be added to be uniformly mixed, and obtain oil
Phase；
（3）The volume ratio of oil phase and water phase is 2 when system breast is mixed:1；
With embodiment 1, difference is application method：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:10 mixing,
And mechanical agitation dispersion 20min is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater
For the waste water formed in Cyanide Process production process, CN thereinConcentration 102mg/L, the concentration 20mg/L of copper；
（2）Demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature 2h；The rate of recovery 99.1% of copper, CNThe rate of recovery be
29.4%；Treated, and waste water returns to Cyanide Process use.
Embodiment 3
For extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide with embodiment 1, difference is：
- three capryl of methyl-chlorination ammonium salt accounts for the 2% of oil phase total volume；Nonyl phenol accounts for the 2% of oil phase total volume, and positive ten
Glycol accounts for the 1.5% of oil phase total volume；Paraffin oil accounts for the 1% of oil phase total volume；Span80 accounts for the 6% of raw material total volume, and surplus is
No. 200 solvent naphthas；Water phase is sodium hydroxide solution, concentration 0.01mol/L；The volume ratio of oil phase and water phase is 1.5:1；
The preparation method is the same as that of Example 1, and difference is：
The volume ratio of oil phase and water phase is 1.5 when system breast is mixed:1；
With embodiment 1, difference is application method：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:3 mixing, and
Mechanical agitation dispersion 12min is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater is
The waste water formed in Cyanide Process production process, CN thereinConcentration 102mg/L, the concentration 20mg/L of copper；
（2）Demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature 1.5h；The rate of recovery 99.3% of copper, CNThe rate of recovery
It is 31%；Treated, and waste water returns to Cyanide Process use.
Embodiment 4
For extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide with embodiment 2, difference is：
- three capryl of methyl-chlorination ammonium salt accounts for the 3% of oil phase total volume；Nonyl phenol accounts for the 3% of oil phase total volume, and positive ten
Glycol accounts for the 1.5% of oil phase total volume；Span80 accounts for the 9% of raw material total volume, and surplus is No. 200 solvent naphthas；Water phase is hydroxide
Sodium solution, concentration 0.01mol/L；The volume ratio of oil phase and water phase is 1.5:1；
The preparation method is the same as that of Example 1, and difference is：
The volume ratio of oil phase and water phase is 1.5 when system breast is mixed:1；
With embodiment 1, difference is application method：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:5 mixing, and
Mechanical agitation dispersion 15min is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater is
The waste water formed in Cyanide Process production process, CN thereinConcentration 510mg/L, the concentration 102mg/L of copper；
（2）Demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature 1.5h；The rate of recovery 96.9% of copper, CNThe rate of recovery
It is 59%；Treated, and waste water returns to Cyanide Process use.
Embodiment 5
For extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide with embodiment 1, difference is：
- three capryl of methyl-chlorination ammonium salt accounts for the 3% of oil phase total volume；Nonyl phenol accounts for the 3% of oil phase total volume, and positive ten
Glycol accounts for the 2% of oil phase total volume；Paraffin oil accounts for the 1.5% of oil phase total volume；Span80 accounts for the 8% of raw material total volume, and surplus is
No. 200 solvent naphthas；Water phase is potassium hydroxide solution, concentration 0.1mol/L；The volume ratio of oil phase and water phase is 2:1；
The preparation method is the same as that of Example 1, and difference is：
The volume ratio of oil phase and water phase is 2 when system breast is mixed:1；
With embodiment 1, difference is application method：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:2 mixing, and
Mechanical agitation dispersion 15min is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater is
The waste water formed in Cyanide Process production process, CN thereinConcentration 510mg/L, the concentration 250mg/L of copper；
（2）Demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature 2h；The rate of recovery 99.1% of copper, CNThe rate of recovery be
64%；Treated, and waste water returns to Cyanide Process use.
Embodiment 6
For extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide with embodiment 2, difference is：
- three capryl of methyl-chlorination ammonium salt accounts for the 1.5% of oil phase total volume；Nonyl phenol accounts for the 1.5% of oil phase total volume,
N-dodecanol accounts for the 1% of oil phase total volume；Span80 accounts for the 5% of raw material total volume, and surplus is No. 200 solvent naphthas；Water phase is hydrogen-oxygen
Change potassium solution, concentration 0.005mol/L；The volume ratio of oil phase and water phase is 1:1；
The preparation method is the same as that of Example 1, and difference is：
The volume ratio of oil phase and water phase is 1 when system breast is mixed:1；
With embodiment 1, difference is application method：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:1 mixing, and
Mechanical agitation dispersion 10min is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater is
The waste water formed in Cyanide Process production process, CN thereinConcentration 132mg/L, the concentration 102mg/L of copper；
（2）Demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature 1h；The rate of recovery 99.2% of copper, CNThe rate of recovery be
95%；Treated, and waste water returns to Cyanide Process use.
Embodiment 7
For extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide with embodiment 1, difference is：
- three capryl of methyl-chlorination ammonium salt accounts for the 4% of oil phase total volume；Nonyl phenol accounts for the 4% of oil phase total volume, and positive ten
Glycol accounts for the 2% of oil phase total volume；Paraffin oil accounts for the 2% of oil phase total volume；Span80 accounts for the 10% of raw material total volume, and surplus is
No. 200 solvent naphthas；Water phase is potassium hydroxide solution, concentration 0.05mol/L；The volume ratio of oil phase and water phase is 1.5:1；
The preparation method is the same as that of Example 1, and difference is：
The volume ratio of oil phase and water phase is 1.5 when system breast is mixed:1；
With embodiment 1, difference is application method：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:10 mixing,
And mechanical agitation dispersion 20min is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；Cyanide wastewater
For the waste water formed in Cyanide Process production process, CN thereinConcentration 510mg/L, the concentration 250mg/L of copper；
（2）Demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature 2h；The rate of recovery 99.3% of copper, CNThe rate of recovery be
65%；Treated, and waste water returns to Cyanide Process use.
Claims (7)
1. a kind of emulsion liquid film for extracting cyanogen Cu in waste water and cyanide, it is characterised in that its raw material components is by oil phase and water
The raw material of phase composition, the oil phase is extraction carrier, mass transfer modifying agent, diluent and emulsifier, or is extraction carrier, biography
Matter modifying agent, stabilizer, diluent and emulsifier；The extraction carrier is-three capryl of methyl-chlorination ammonium salt, accounts for oil phase
The 1.5 ~ 4% of total volume；Mass transfer modifying agent is nonyl phenol and n-dodecanol, and nonyl phenol accounts for the 1.5 ~ 4% of oil phase total volume, just
Lauryl alcohol accounts for the 1 ~ 2% of oil phase total volume；Stabilizer is paraffin oil, accounts for the 0 ~ 2% of oil phase total volume；Emulsifier is span80, is accounted for
The 5 ~ 10% of raw material total volume, surplus are No. 200 solvent naphthas of diluent；The water phase is sodium hydroxide solution or potassium hydroxide
Solution, 0.005 ~ 0.1mol/L of concentration；The volume ratio of the oil phase and water phase is 1:1~2:1.
2. a kind of preparation method described in claim 1 for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide, special
Sign is to carry out according to the following steps：
（1）Prepare the raw material of water phase and oil phase respectively；The raw material of the oil phase is extraction carrier, mass transfer modifying agent, diluent
And emulsifier, or be extraction carrier, mass transfer modifying agent, stabilizer, diluent and emulsifier；
（2）Extraction carrier and mass transfer modifying agent are dissolved in diluent, when having stabilizer in the raw material of oil phase, by extraction carrier,
Mass transfer modifying agent and stabilizer are dissolved in diluent；Emulsifier will then be added to be uniformly mixed, and obtain oil phase；
（3）Oil phase is mixed with water conjunction stirring system breast, obtains the emulsion liquid film for extracting cyanogen Cu in waste water and cyanide, wherein
The volume ratio of oil phase and water phase is 1:1~2:1.
3. a kind of application method described in claim 1 for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide, special
Sign is to carry out according to the following steps：
（1）It will be for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide and cyanide wastewater by volume 1:（1~10）Mixing,
And mechanical agitation is disperseed 10 ~ 20min and is extracted, and is then allowed to stand split-phase, obtains enrichment lotion and treated waste water；
（2）The enrichment emulsion breaking that will be obtained after split-phase, obtain regeneration oil phase and enrichment water phase, from enrichment water phase in recycling copper and
Cyanide.
4. the application method according to claim 3 for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide, special
Sign is that the cyanide wastewater is the waste water formed in Cyanide Process production process, CN thereinConcentration 50 ~
510mg/L, 20 ~ 250mg/L of concentration of copper.
5. the application method according to claim 3 for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide, special
Sign is step（1）In, copper is present in the form of copper cyanide in enrichment lotion, and treated, and waste water returns to cyanidation gold-extracted work
Skill uses.
6. the application method according to claim 3 for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide, special
Sign is that the demulsification is will to be enriched with lotion to be heated to 90 ± 2 DEG C, keeps the temperature at least 1h；After demulsification, copper and cyanide are enriched in
It is enriched in water phase.
7. the application method according to claim 3 for extracting the emulsion liquid film of cyanogen Cu in waste water and cyanide, special
Sign is rate of recovery >=96%, CN of copperThe rate of recovery be 29 ~ 95%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774003A (en) * | 1983-08-25 | 1988-09-27 | University Of Utah | Ion exchange extraction of metallic and non-metallic anions by control of the basicity of amine extractants |
| EP0301783A2 (en) * | 1987-07-28 | 1989-02-01 | Institut Po Injenerna Chimia | Method for the recovery of metals from chloride solutions |
| US5968364A (en) * | 1993-03-16 | 1999-10-19 | Henkel Corporation | Process for the removal of toxic cyanide and heavy metal species from alkaline solutions |
| CN1912156A (en) * | 2006-08-23 | 2007-02-14 | 暨南大学 | Method for extracting gold (I) from enriched alkaline cyanide gold immersing liquid |
| CN104609495A (en) * | 2015-01-27 | 2015-05-13 | 东北大学 | Method for recycling copper and cyanide in cyanide-containing wastewater by using emulsion liquid membrane |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774003A (en) * | 1983-08-25 | 1988-09-27 | University Of Utah | Ion exchange extraction of metallic and non-metallic anions by control of the basicity of amine extractants |
| EP0301783A2 (en) * | 1987-07-28 | 1989-02-01 | Institut Po Injenerna Chimia | Method for the recovery of metals from chloride solutions |
| US5968364A (en) * | 1993-03-16 | 1999-10-19 | Henkel Corporation | Process for the removal of toxic cyanide and heavy metal species from alkaline solutions |
| CN1912156A (en) * | 2006-08-23 | 2007-02-14 | 暨南大学 | Method for extracting gold (I) from enriched alkaline cyanide gold immersing liquid |
| CN104609495A (en) * | 2015-01-27 | 2015-05-13 | 东北大学 | Method for recycling copper and cyanide in cyanide-containing wastewater by using emulsion liquid membrane |
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