CN107931309A - A kind of method for innocent treatment of gold smelting enterprise high concentration containing cyanogen tailings containing arsenic - Google Patents
A kind of method for innocent treatment of gold smelting enterprise high concentration containing cyanogen tailings containing arsenic Download PDFInfo
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- CN107931309A CN107931309A CN201711291393.6A CN201711291393A CN107931309A CN 107931309 A CN107931309 A CN 107931309A CN 201711291393 A CN201711291393 A CN 201711291393A CN 107931309 A CN107931309 A CN 107931309A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic 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
- 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
- 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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The invention discloses a kind of method for innocent treatment of gold smelting enterprise high concentration containing cyanogen tailings containing arsenic, the characteristics of present invention is directed to roasting pretreatment gold smelting enterprise, using the high-concentration sulfur dioxide gas of its generation, with reference to the oxygen in air, processing high concentration is containing the cyanide in cyanogen tailings containing arsenic, recycle iron salt method, arsenic is handled, the press filtration tailings finally obtained is general industrial solid waste, the problem for solving enterprise, reduce environmental risk, obvious environment benefit；Method technological process proposed by the present invention is simple, treatment effect is stable, pollutants removal rate is high, operating cost is low, one-time investment is few, and the development to gold smelting industry has huge progradation.
Description
Technical field
The present invention relates to field of environment protection gold industry tailings processing method, more particularly to a kind of gold smelting industry high concentration
Method for innocent treatment containing cyanogen tailings containing arsenic.
Background technology
Roasting pretreatment solution of gold smelting plant can produce high concentration tailings containing arsenic containing cyanogen, which is hazardous waste.In recent years
Management of the country to hazardous waste requires more and more stringenter, it is necessary to pre-processes hazardous waste, is allowed to be changed into general work
Industry solid waste, so as to be stored up and transported.Therefore, this problem how is resolved to China's roasting pretreatment gold row
The sustainable development of industry smeltery will have important meaning.
At present, it is seldom to treatment technology of the high concentration containing cyanogen tailings containing arsenic both at home and abroad, but to the place of the arsenic-containing waste water containing cyanogen
Reason technical research is relatively more, and the processing method of cyanide wastewater is mainly oxidizing process, more using Pomolio-Celdecor process, Ozonation, because of section
Method etc., the processing method of arsenic-containing waste water is mainly iron salt method and calcium salt method.
The content of the invention
In order to overcome the above problem, the present invention provides a kind of gold smelting industry middle and high concentration containing the harmless of cyanogen tailings containing arsenic
Change processing method, be that a kind of technological process is simple, treatment effect is stable, pollutants removal rate is high, operating cost is low, disposable throwing
Provide few processing method.
The characteristics of present invention produces high-concentration sulfur dioxide gas for roasting pretreatment gold smelting enterprise, using its production
Raw high-concentration sulfur dioxide gas, high concentration is handled containing the cyanide in cyanogen tailings containing arsenic in conjunction with the oxygen in air,
Iron salt method processing arsenic is recycled, the press filtration tailings finally obtained is general industrial solid waste, the problem for solving enterprise, is reduced
Environmental risk, obvious environment benefit.
Method for innocent treatment of a kind of gold smelting enterprise high concentration of the present invention containing cyanogen tailings containing arsenic, using such as
Lower concrete technical scheme：
A kind of method for innocent treatment of gold smelting enterprise high concentration containing cyanogen tailings containing arsenic, it is characterised in that this method
The step of it is as follows：
(1) high concentration that roasting pretreatment gold smelting enterprise produces continuously is added into stirring containing cyanogen tailings containing arsenic
In groove one, continuously water is added to size mixing into tank diameter one；
(2) the successive ground pump of ore pulp mixed up in step (1) is buffered into tank diameter two；
(3) after ore pulp is filled with tank diameter two, by the ore pulp in tank diameter two with stable flow pump to tank diameter three
In, while the high-concentration sulfur dioxide gas of roasting pretreatment technique generation during gold smelting is persistently passed through into tank diameter three
Body, and it is passed through air in three bottom of tank diameter；
After ore pulp is filled with tank diameter three, the ore pulp overflow for making to overflow in tank diameter three is held at the same time into tank diameter four
Continue the high-concentration sulfur dioxide gas that the generation of roasting pretreatment technique is passed through into tank diameter four, and be passed through in four bottom of tank diameter
Air；
After ore pulp is filled with tank diameter four, the ore pulp overflow for making to overflow in tank diameter four into tank diameter five, meanwhile, hold
Continue the high-concentration sulfur dioxide gas that the generation of roasting pretreatment technique is passed through into tank diameter five, and lead in the bottom of tank diameter five
Enter air；
(4) after ore pulp is filled with tank diameter five, the ore pulp overflow for making to overflow in tank diameter five is into tank diameter six, at the same time
Continue to add ferrous sulfate into tank diameter six；
After ore pulp is filled with tank diameter six, the ore pulp overflow for making to overflow in tank diameter six is held at the same time into tank diameter seven
Continue and add ferrous sulfate into tank diameter seven；
After ore pulp is filled with tank diameter seven, the ore pulp overflow for making to overflow in tank diameter seven is held at the same time into tank diameter eight
Continue and add ferrous sulfate into tank diameter eight；The pH value of ore pulp in monitoring tank diameter six, tank diameter seven and tank diameter eight；
(5) ore pulp for discharging tank diameter eight carries out press filtration processing, and the clear liquid after press filtration can be back to tank diameter in step (1)
Size mixing in one, and quantify replacement；
(6) tailings obtained after press filtration in step (5) is subjected to toxicity and leaches discriminating, the results showed that it consolidates for general industry
Body waste, and finally sell to dump leaching enterprise.
Further technical solution includes：
In the step (1), moisture content of the high concentration containing cyanogen tailings containing arsenic that gold smelting enterprise produces arrives for 28%
Between 35%, cyanide content is 500mg/kg to 1000mg/kg, and total cyanide concentration is in the ore pulp filtrate after sizing mixing
Between 300mg/L to 1000mg/L, total arsenic concentration is between 20mg/L to 1000mg/L in the ore pulp filtrate after sizing mixing, gold smelting
High concentration leaching containing cyanogen tailings containing arsenic toxicity that enterprise produces is refined the result shows that it is hazardous waste, the ore pulp filter-press residues after sizing mixing
Toxicity is leached the result shows that it is hazardous waste.
In the step (2), ore pulp is 2h to 3h in two residence time of tank diameter.
The volume all same of tank diameter three, tank diameter four and tank diameter five in the step (3), ore pulp tank diameter three,
Residence time in tank diameter four and tank diameter five is 2h.
In the step (3), the high-concentration sulfur dioxide gas that is passed through into tank diameter three, tank diameter four and tank diameter five
In sulfur dioxide concentration in 180000mg/m3To 220000mg/m3Between, in tank diameter three, tank diameter four and tank diameter five,
Between sulfur dioxide gas intake is 0.5 to 2.5 times of the dischargeable capacity of corresponding tank diameter per hour in separate unit tank diameter,
Between air intake is 0.5 to 2.5 times of corresponding tank diameter dischargeable capacity per hour in separate unit tank diameter, make tank diameter
3rd, in tank diameter four and tank diameter five pH stable of ore pulp between 8 to 10.
In the step (4), the volume all same of tank diameter six, tank diameter seven and tank diameter eight, ore pulp tank diameter six,
The residence time of tank diameter seven and tank diameter eight is 2h.
In the step (4), mix in groove six, tank diameter seven, tank diameter eight, ferrous sulfate is added to each tank diameter
Addition is between 15th/3000 to thousand/1000ths of ore pulp excess flow, makes to mix in six tank diameter seven of groove, tank diameter eight
The pH value of ore pulp is stablized between 7.5 to 8.5.
In the step (5), total cyanide concentration is less than 50mg/L in the clear liquid after press filtration, and total arsenic concentration is less than 10mg/
L, is back in tank diameter one and sizes mixing, and quantifies replacement, is 10% per 24h replacements amount.
Present invention the characteristics of be directed to roasting pretreatment solution of gold smelting plant, using the high-concentration sulfur dioxide gas that it is produced,
With reference to the oxygen in air, processing high concentration contains cyanide in cyanogen tailings containing arsenic, recycles iron salt method, handles arsenic, finally obtains
Press filtration tailings be general industrial solid waste, the problem for solving enterprise, reduces environmental risk, obvious environment benefit.This
Technological process is simple, treatment effect is stable, pollutants removal rate is high, operating cost is low, one-time investment is few.The present invention is to gold
The development of industry has huge progradation.
The specification of the present invention does not provide attached drawing.
Embodiment
A kind of the step of method for innocent treatment of gold smelting enterprise high concentration containing cyanogen tailings containing arsenic, this method, is as follows：
(1) high concentration that roasting pretreatment gold smelting enterprise produces continuously is added into stirring containing cyanogen tailings containing arsenic
In groove one, continuously water is added to size mixing into tank diameter one；The high concentration that gold smelting enterprise produces is containing cyanogen tailings containing arsenic
Between moisture content is 28% to 35%, cyanide content is 500mg/kg to 1000mg/kg, total cyanogen in the ore pulp filtrate after sizing mixing
Compound concentration is between 300mg/L to 1000mg/L, and total arsenic concentration is 20mg/L to 1000mg/L in the ore pulp filtrate after sizing mixing
Between, the high concentration that gold smelting enterprise produces is leached the result shows that it is hazardous waste, after sizing mixing containing cyanogen tailings containing arsenic toxicity
Ore pulp filter-press residues toxicity leach the result shows that it is hazardous waste.
(2) the successive ground pump of ore pulp mixed up in step (1) is buffered into tank diameter two；Ore pulp stops in tank diameter two
It is 2h to 3h to stay the time.
(3) after ore pulp is filled with tank diameter two, by the ore pulp in tank diameter two with stable flow pump to tank diameter three
In, while the high-concentration sulfur dioxide gas of roasting pretreatment technique generation during gold smelting is persistently passed through into tank diameter three
Body, and it is passed through air in three bottom of tank diameter；
After ore pulp is filled with tank diameter three, the ore pulp overflow for making to overflow in tank diameter three is held at the same time into tank diameter four
Continue the high-concentration sulfur dioxide gas that the generation of roasting pretreatment technique is passed through into tank diameter four, and be passed through in four bottom of tank diameter
Air；
After ore pulp is filled with tank diameter four, the ore pulp overflow for making to overflow in tank diameter four into tank diameter five, meanwhile, hold
Continue the high-concentration sulfur dioxide gas that the generation of roasting pretreatment technique is passed through into tank diameter five, and lead in the bottom of tank diameter five
Enter air；
The volume all same of tank diameter three, tank diameter four and tank diameter five, ore pulp is in tank diameter three, tank diameter four and stirring
Residence time in groove five is 2h；
Sulfur dioxide in the high-concentration sulfur dioxide gas being passed through into tank diameter three, tank diameter four and tank diameter five is dense
Degree is in 180000mg/m3To 220000mg/m3Between, it is every in separate unit tank diameter in tank diameter three, tank diameter four and tank diameter five
It is every in separate unit tank diameter between hour sulfur dioxide gas intake is 0.5 to 2.5 times of the dischargeable capacity of corresponding tank diameter
Between hour air intake is 0.5 to 2.5 times of corresponding tank diameter dischargeable capacity, makes tank diameter three, tank diameter four and stir
The pH stable of ore pulp in groove five is mixed between 8 to 10；
(5) after ore pulp is filled with tank diameter five, the ore pulp overflow for making to overflow in tank diameter five is into tank diameter six, at the same time
Continue to add ferrous sulfate into tank diameter six；
After ore pulp is filled with tank diameter six, the ore pulp overflow for making to overflow in tank diameter six is held at the same time into tank diameter seven
Continue and add ferrous sulfate into tank diameter seven；
After ore pulp is filled with tank diameter seven, the ore pulp overflow for making to overflow in tank diameter seven is held at the same time into tank diameter eight
Continue and add ferrous sulfate into tank diameter eight；The pH value of ore pulp in monitoring tank diameter six, tank diameter seven and tank diameter eight；
The volume all same of tank diameter six, tank diameter seven and tank diameter eight, ore pulp is in tank diameter six, tank diameter seven and stirring
The residence time of groove eight is 2h；
Mix in groove six, tank diameter seven, tank diameter eight, the addition that ferrous sulfate is added to each tank diameter is ore pulp
Between 3000 to the thousand/1000ths of excess flow/15, make the pH value for mixing ore pulp in six tank diameter seven of groove, tank diameter eight steady
It is scheduled between 7.5 to 8.5；
(7) ore pulp for discharging tank diameter eight carries out press filtration processing, and the clear liquid after press filtration can be back to tank diameter in step (1)
Size mixing in one, and quantify replacement；
(8) tailings obtained after press filtration in step (7) is subjected to toxicity and leaches discriminating, the results showed that it consolidates for general industry
Body waste, and finally sell to dump leaching enterprise.
(9) total cyanide concentration is less than 50mg/L in the clear liquid after press filtration, and total arsenic concentration is less than 10mg/L, is back to stirring
Size mixing in groove one, and quantify replacement, be 10% per 24h replacements amount.
In conjunction with two embodiments the present invention will be further explained explanation：
Embodiment 1：
Certain roasting pretreatment gold smelting Co., Ltd, the high concentration of generation is continuously added containing cyanogen tailings containing arsenic to be stirred
Mix in groove one, continuously add water to size mixing into tank diameter one, high concentration is 30% to 35% containing cyanogen tailings containing arsenic moisture content
Between, cyanide content is 700mg/kg to 800mg/kg, and total cyanide concentration arrives for 300mg/L in the ore pulp filtrate after sizing mixing
Between 500mg/L, total arsenic concentration is between 20mg/L to 600mg/L in the ore pulp filtrate after sizing mixing, gold smelting enterprise production
Raw high concentration is leached containing cyanogen tailings containing arsenic toxicity the result shows that it is hazardous waste, and the ore pulp filter-press residues toxicity after sizing mixing leaches
The result shows that it is hazardous waste.Amount of the pending high concentration containing cyanogen tailings containing arsenic is 150t/d, and mineral slurry flux is after sizing mixing
10m3/h.The successive ground pump of ore pulp mixed up is buffered into tank diameter two, and two residence time of tank diameter is 2h, dischargeable capacity
20m3.After ore pulp is filled with tank diameter two, by the ore pulp in tank diameter two with stable flow pump into tank diameter three, at the same time
Continue to be passed through the high-concentration sulfur dioxide gas that roasting pretreatment technique produces during gold smelting into tank diameter three, and
Three bottom of tank diameter is passed through air, and monitoring slurry pH in tank diameter three after ore pulp is filled with tank diameter three, makes tank diameter three
The ore pulp overflow of middle spilling continues to be passed through the highly concentrated of roasting pretreatment technique generation into tank diameter four into tank diameter four
Sulfur dioxide gas is spent, and air is passed through in four bottom of tank diameter, slurry pH in tank diameter four is monitored, is contained when in tank diameter four
After full ore pulp, the ore pulp overflow for making to overflow in tank diameter four into tank diameter five, meanwhile, continue to be passed through roasting into tank diameter five
The high-concentration sulfur dioxide gas that pretreating process produces, and air is passed through in the bottom of tank diameter five, monitor in tank diameter five
Slurry pH.Mix in groove three, tank diameter four, tank diameter five, sulfur dioxide gas intake is 33m in separate unit tank diameter3/ h, production
Raw 180 000mg/m of high-concentration sulfur dioxide gas concentration3To 200000mg/m3Between, air intake is in separate unit tank diameter
33m3/ h, mixes in groove three, tank diameter four, tank diameter five pH stable between 8 to 10.After ore pulp is filled with tank diameter five,
The ore pulp overflow for making to overflow in tank diameter five continues into tank diameter six to add ferrous sulfate into tank diameter six, when stirring
Mix after filling with ore pulp in groove six, the ore pulp overflow for making to overflow in tank diameter six continues to tank diameter seven into tank diameter seven
Middle addition ferrous sulfate, after ore pulp is filled with tank diameter seven, the ore pulp overflow for making to overflow in tank diameter seven into tank diameter eight,
Continue to add ferrous sulfate into tank diameter eight at the same time, the pH value of ore pulp in monitoring tank diameter six, tank diameter seven and tank diameter eight.
The volume all same of groove six, tank diameter seven, tank diameter eight is mixed, the addition that the residence time is 2h ferrous sulfate is 33kg/h,
PH value in groove six, tank diameter seven, tank diameter eight is mixed to be stable between 7.5 to 8.5.The ore pulp for discharging tank diameter eight carries out press filtration
Handle, total cyanide concentration is less than 50mg/L in the clear liquid after press filtration, and total arsenic concentration is less than 10mg/L, is back in tank diameter one
Size mixing, and quantify replacement, be 10% per 24h replacements amount, the tailings after press filtration carries out toxicity and leaches discriminating, the results showed that it is one
As industrial solid wastes, be finally sold to dump leaching enterprise.
Embodiment 2：
Certain roasting pretreatment gold smelting Co., Ltd, the high concentration of generation is continuously added containing cyanogen tailings containing arsenic to be stirred
Mix in groove one, continuously add water to size mixing into tank diameter one, high concentration is 30% to 35% containing cyanogen tailings containing arsenic moisture content
Between, cyanide content is 1 500mg/kg to 2 000mg/kg, and total cyanide concentration is in the ore pulp filtrate after sizing mixing
Between 700mg/L to 1 000mg/L, total arsenic concentration, should between 400mg/L to 1 000mg/L in the ore pulp filtrate after sizing mixing
The high concentration that gold smelting enterprise produces leaching containing cyanogen tailings containing arsenic toxicity is the result shows that it is hazardous waste, the ore pulp after sizing mixing
Filter-press residues toxicity is leached the result shows that it is hazardous waste.Amount of the pending high concentration containing cyanogen tailings containing arsenic is 120t/d, is sized mixing
Mineral slurry flux is 7m afterwards3/h.The successive ground pump of ore pulp mixed up is buffered into tank diameter two, and two residence time of tank diameter is
2h, dischargeable capacity 14m3.After ore pulp is filled with tank diameter two, by the ore pulp in tank diameter two with stable flow pump to stirring
In groove three, while the high concentration titanium dioxide of roasting pretreatment technique generation during gold smelting is persistently passed through into tank diameter three
Sulphur gas, and air is passed through in three bottom of tank diameter, monitors in tank diameter three slurry pH after ore pulp is filled with tank diameter three,
The ore pulp overflow for making to overflow in tank diameter three continues to be passed through roasting pretreatment technique into tank diameter four into tank diameter four
The high-concentration sulfur dioxide gas of generation, and air is passed through in four bottom of tank diameter, monitors slurry pH in tank diameter four, when stirring
Mix after filling with ore pulp in groove four, the ore pulp overflow for making to overflow in tank diameter four into tank diameter five, meanwhile, continue to tank diameter five
In be passed through the high-concentration sulfur dioxide gas of roasting pretreatment technique generation, and be passed through air in the bottom of tank diameter five, monitor
Slurry pH in tank diameter five.Mix in groove three, tank diameter four, tank diameter five, sulfur dioxide gas intake in separate unit tank diameter
For 50m3/ h, produces 180 000mg/m of high-concentration sulfur dioxide gas concentration3To 220 000mg/m3Between, in separate unit tank diameter
Air intake is 50m3/ h, mixes in groove three, tank diameter four, tank diameter five pH stable between 8 to 10.When in tank diameter five
After filling with ore pulp, the ore pulp overflow for making to overflow in tank diameter five continues to add sulphur into tank diameter six into tank diameter six
Sour ferrous, after ore pulp is filled with tank diameter six, the ore pulp overflow for making to overflow in tank diameter six continues at the same time into tank diameter seven
Ferrous sulfate is added into tank diameter seven, after ore pulp is filled with tank diameter seven, makes the ore pulp overflow overflowed in tank diameter seven extremely
In tank diameter eight, while continue to add ferrous sulfate into tank diameter eight, in monitoring tank diameter six, tank diameter seven and tank diameter eight
The pH value of ore pulp.The volume all same of groove six, tank diameter seven, tank diameter eight is mixed, the residence time is the addition of 2h ferrous sulfate
Measure as 50kg/h, mix pH value in groove six, tank diameter seven, tank diameter eight and be stable between 7.5 to 8.5.Discharge tank diameter eight
Ore pulp carries out press filtration processing, and total cyanide concentration is less than 50mg/L in the clear liquid after press filtration, and total arsenic concentration is less than 10mg/L, reuse
Size mixing in tank diameter one, and quantify replacement, be 10% per 24h replacements amount, the toxicity that the tailings after press filtration carries out leaches discriminating, knot
Fruit shows that it is general industrial solid waste, is finally sold to pelletizing plant.
Claims (8)
1. method for innocent treatment of a kind of gold smelting enterprise high concentration containing cyanogen tailings containing arsenic, it is characterised in that this method
Step is as follows：
(1) high concentration that roasting pretreatment gold smelting enterprise produces continuously is added into tank diameter one containing cyanogen tailings containing arsenic
In, continuously add water to size mixing into tank diameter one；
(2) the successive ground pump of ore pulp mixed up in step (1) is buffered into tank diameter two；
(3) after ore pulp is filled with tank diameter two, by the ore pulp in tank diameter two with stable flow pump into tank diameter three, together
Shi Chixu is passed through the high-concentration sulfur dioxide gas of roasting pretreatment technique generation during gold smelting into tank diameter three, and
Air is passed through in three bottom of tank diameter；
After ore pulp is filled with tank diameter three, the ore pulp overflow for making to overflow in tank diameter three into tank diameter four, while continue to
The high-concentration sulfur dioxide gas of roasting pretreatment technique generation is passed through in tank diameter four, and sky is passed through in four bottom of tank diameter
Gas；
After ore pulp is filled with tank diameter four, the ore pulp overflow for making to overflow in tank diameter four into tank diameter five, meanwhile, continue to
The high-concentration sulfur dioxide gas of roasting pretreatment technique generation is passed through in tank diameter five, and sky is passed through in the bottom of tank diameter five
Gas；
(4) after ore pulp is filled with tank diameter five, the ore pulp overflow for making to overflow in tank diameter five continues at the same time into tank diameter six
Ferrous sulfate is added into tank diameter six；
After ore pulp is filled with tank diameter six, the ore pulp overflow for making to overflow in tank diameter six into tank diameter seven, while continue to
Ferrous sulfate is added in tank diameter seven；
After ore pulp is filled with tank diameter seven, the ore pulp overflow for making to overflow in tank diameter seven into tank diameter eight, while continue to
Ferrous sulfate is added in tank diameter eight；The pH value of ore pulp in monitoring tank diameter six, tank diameter seven and tank diameter eight；
(5) ore pulp for discharging tank diameter eight carries out press filtration processing, and the clear liquid after press filtration can be back in step (1) in tank diameter one
Size mixing, and quantify replacement；
(6) tailings obtained after press filtration in step (5) is subjected to toxicity and leaches discriminating, the results showed that it gives up for general industry solid
Thing, and finally sell to dump leaching enterprise.
2. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：In the step (1), moisture content of the high concentration containing cyanogen tailings containing arsenic that gold smelting enterprise produces arrives for 28%
Between 35%, cyanide content is 500mg/kg to 1000mg/kg, and total cyanide concentration is in the ore pulp filtrate after sizing mixing
Between 300mg/L to 1000mg/L, total arsenic concentration is between 20mg/L to 1000mg/L in the ore pulp filtrate after sizing mixing, gold smelting
High concentration leaching containing cyanogen tailings containing arsenic toxicity that enterprise produces is refined the result shows that it is hazardous waste, the ore pulp filter-press residues after sizing mixing
Toxicity is leached the result shows that it is hazardous waste.
3. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：In the step (2), ore pulp is 2h to 3h in two residence time of tank diameter.
4. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：The volume all same of tank diameter three, tank diameter four and tank diameter five in the step (3), ore pulp is in tank diameter
3rd, the residence time in tank diameter four and tank diameter five is 2h.
5. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：In the step (3), the high-concentration sulfur dioxide that is passed through into tank diameter three, tank diameter four and tank diameter five
Sulfur dioxide concentration in gas is in 180000mg/m3To 220000mg/m3Between, tank diameter three, tank diameter four and tank diameter five
In, in separate unit tank diameter per hour sulfur dioxide gas intake for 0.5 to 2.5 times of dischargeable capacity of corresponding tank diameter it
Between, between air intake is 0.5 to 2.5 times of corresponding tank diameter dischargeable capacity per hour in separate unit tank diameter, make stirring
The pH stable of ore pulp is between 8 to 10 in groove three, tank diameter four and tank diameter five.
6. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：In the step (4), the volume all same of tank diameter six, tank diameter seven and tank diameter eight, ore pulp is in tank diameter
6th, the residence time of tank diameter seven and tank diameter eight is 2h.
7. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：In the step (4), mix in groove six, tank diameter seven, tank diameter eight, it is sub- to add sulfuric acid to each tank diameter
The addition of iron is between 15th/3000 to thousand/1000ths of ore pulp excess flow, makes to mix six tank diameter seven of groove, tank diameter
The pH value of ore pulp is stablized between 7.5 to 8.5 in eight.
8. a kind of method for innocent treatment of the gold smelting enterprise high concentration according to claim 1 containing cyanogen tailings containing arsenic,
It is characterized in that：In the step (5), total cyanide concentration is less than 50mg/L in the clear liquid after press filtration, and total arsenic concentration is less than
10mg/L, is back in tank diameter one and sizes mixing, and quantifies replacement, is 10% per 24h replacements amount.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109848179A (en) * | 2019-01-15 | 2019-06-07 | 长春黄金研究院有限公司 | A kind of gold industry hot-pressure oxidation cyaniding tailing processing method |
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