CN108147578A - A kind of processing method of sludge containing cyanogens - Google Patents
A kind of processing method of sludge containing cyanogens Download PDFInfo
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- CN108147578A CN108147578A CN201711292226.3A CN201711292226A CN108147578A CN 108147578 A CN108147578 A CN 108147578A CN 201711292226 A CN201711292226 A CN 201711292226A CN 108147578 A CN108147578 A CN 108147578A
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- press filtration
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- stripping
- sludge containing
- filtrate
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- 239000010802 sludge Substances 0.000 title claims abstract description 31
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000000706 filtrate Substances 0.000 claims abstract description 32
- 238000005406 washing Methods 0.000 claims abstract description 29
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000004064 recycling Methods 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 19
- 239000012065 filter cake Substances 0.000 claims description 18
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 13
- 229910052737 gold Inorganic materials 0.000 claims description 13
- 239000010931 gold Substances 0.000 claims description 13
- 239000003814 drug Substances 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000920 calcium hydroxide Substances 0.000 claims description 6
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 230000020477 pH reduction Effects 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000006385 ozonation reaction Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract description 26
- 238000010828 elution Methods 0.000 abstract description 14
- 239000003344 environmental pollutant Substances 0.000 abstract description 12
- 231100000719 pollutant Toxicity 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 9
- 238000002386 leaching Methods 0.000 description 9
- 239000002893 slag Substances 0.000 description 9
- 230000001988 toxicity Effects 0.000 description 8
- 231100000419 toxicity Toxicity 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 229920000858 Cyclodextrin Polymers 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000002920 hazardous waste Substances 0.000 description 3
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 3
- 235000019795 sodium metasilicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- -1 hydrogen Sodium hydroxide Chemical class 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- 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
-
- 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
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Treatment Of Sludge (AREA)
- Physical Water Treatments (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention belongs to field of environment protection pollutant process method, specifically a kind of processing method of sludge containing cyanogens.This method by positive press filtration, washing, stripping, filtrate processing and etc. form, being integrally formed treatment process, the present invention can overcome the defects of elution efficiency is low, water consumption is big existing for tradition stirring elution processes, it not only can be by the cyanide in sludge containing cyanogens and valuable metal elution with disposing, realize the harmless treatment of sludge containing cyanogens, and it can realize the recycling of cyanogen and valuable metal element in Tailings Slurry, realize making full use of for water resource, with elution efficiency height, water consumption is few, elution effect is good, has a extensive future.
Description
Technical field
The invention belongs to field of environment protection pollutant process method, specifically a kind of processing method of sludge containing cyanogens.
Background technology
Since the most of gold mines in China are always using Cyanide Process, generate during golden production and largely contain
Cyanogen Tailings Slurry, these sludge containing cyanogens are deposited in after press filtration in Tailings Dam, are gone through with the expansion and exploitation of golden production scale
The extension of history, the accumulating amount of cyanogen-containing tailing are increasing year by year, and occupy a large amount of soils, these tailings are due to containing extremely toxic substance-cyanogen
Compound becomes the hazardous waste of gold mine enterprise generally existing, improper or maintenance management is too late in Tailings Dam Anti-seeping technology
Constantly, cyanide will generate pollution because drenching with rain down to ooze to surrounding enviroment and underground water in cyanogen-containing tailing slag.As country is to ring
The gradual attention in guarantor field, the gold mine enterprise of domestic cyanidation technology there is an urgent need to the cyanogen-containing tailing to Tailings Dam at
Reason reduces the content of cyanide in mine tailings, so as to further realize the recycling of tailing.From reduce technological process and from
Cost consideration is managed, gold mine enterprise of the country directly carries out sludge containing cyanogens drop cyanogen processing at present, and the method for processing uses more
Traditional broken cyanide treatment process such as Pomolio-Celdecor process, Yin Kefa, hydrogen peroxide method is not carried out Cyanide in Waste Water compound and valuable metal member
The recycling of element, and cyanide and valuable metal element of the treatment process not only in recyclable Tailings Slurry are eluted, but also can realize water
Resource makes full use of, and becomes the preferred technique of processing Tailings Slurry, but due to traditional stirring elution processes, not only elution efficiency
It is low, and water consumption is big, is subject to certain restrictions the development of this technique.
Invention content
The present invention provides the sludge containing cyanogens processing method that a kind of elution efficiency is high, water consumption is few, elution effect is good, solutions
The above-mentioned deficiency for existing Tailings Slurry processing method of having determined.
Technical solution of the present invention is described with reference to the drawings as follows：
A kind of processing method of sludge containing cyanogens, this method include the following steps：
Step 1: positive press filtration：Sludge containing cyanogens are pumped into positive press filtration device, open air source or mechanical driver unit into
Promoting the circulation of qi pressure or mechanical compression filtering, filtrate return to the technological process of production or return to production technology after carrying out acidification stripping neutralisation treatment
Flow；
Step 2: washing：Positive press filtration device removable cover is adjusted, makes the vacant filter volumetric 1/5~4/5 of filter interior
Space is pumped into washings using water pump toward filter interior, opens air source or mechanical driver unit carries out air pressure or mechanical compression
Filtering, filtrate carry out advanced treating；Wherein the mass ratio of washings and mine tailings is 0.2~1；
Step 3: stripping：Positive press filtration device removable cover is adjusted, makes the vacant filter volumetric 1/5~1/2 of filter interior
Space can not have to adjustment according to air source positive press filtration device, and being passed through air toward filter interior using air compressor machine or wind turbine carries out
Stripping；
If Step 4: sludge containing cyanogens cyanide or gold content be more than 0.05mg/L or silver content be more than 10mg/L or
It when copper content is more than 500mg/, repeats Step 2: the operation of step 3, until cyanide or gold, silver in tailing after stripping
Until the content for reaching requirement with copper content；
Step 5: acidification stripping neutralisation treatment：Filtrate is placed in reactor, acid for adjusting pH value is added to be filtered back to 2~3
Precipitation slag is received, supernatant is placed in aeration stripping device, and ventilate 1~3h of stripping, is generated gas and is passed through 5%~20% sodium hydroxide
Lye absorbs, and liquid is neutralized using milk of lime after stripping；
Step 6: advanced treating：Filtrate by active carbon adsorption column recycling gold after, using Yin Kefa, Ozonation or
Hydrogen peroxide oxidation method carries out broken cyanide processing, and treated, and filtrate is back in step 2 is washed as washings.
Positive press filtration device in the step one is a kind of dress that the moisture in material is made to penetrate filter cloth by front pressure
It puts, pressure size is 0.4~0.8Mpa, until time of filter pressing is not flowed out for filtrate.
Washings in the step two is clear water or add in the water of washing medicament, advanced treating in the step six
Water or the water of addition washing medicament, the two mixing water or both mixing afterwards adds in the water of washing medicament.
The washing medicament is surfactant, the mixture of dispersant, solubilizer；Wash water in step 1 just
Press through 0.2~2 times of filter cake weight after filter press filtration.
Beneficial effects of the present invention are：
The present invention provides a kind of press filtration-washing-stripping integrated processing technique, and tradition stirring elution processes can be overcome to deposit
Elution efficiency it is low, water consumption is big the defects of, not only can by the cyanide in sludge containing cyanogens and valuable metal elution with
It disposes, realizes the harmless treatment of sludge containing cyanogens, and can realize the recycling of cyanogen and valuable metal element in Tailings Slurry,
Realize making full use of for water resource, with elution efficiency height, water consumption is few, elution effect is good, has a extensive future.
Description of the drawings
Fig. 1 is the structure diagram of positive press filtration device.
Specific embodiment
A kind of processing method of sludge containing cyanogens, this method include the following steps：
Step 1: positive press filtration：Sludge containing cyanogens are pumped into positive press filtration device, open air source or mechanical driver unit into
Promoting the circulation of qi pressure or mechanical compression filtering, filtrate return to the technological process of production or return to production technology after carrying out acidification stripping neutralisation treatment
Flow；
Step 2: washing：Positive press filtration device removable cover is adjusted, makes the vacant filter volumetric 1/5~4/5 of filter interior
Space is pumped into washings using water pump toward filter interior, opens air source or mechanical driver unit carries out air pressure or mechanical compression
Filtering, filtrate carry out advanced treating；Wherein the mass ratio of washings and mine tailings is 0.2~1；
Step 3: stripping：Positive press filtration device removable cover is adjusted, makes the vacant filter volumetric 1/5~1/2 of filter interior
Space can not have to adjustment according to air source positive press filtration device, and being passed through air toward filter interior using air compressor machine or wind turbine carries out
Stripping；
If Step 4: sludge containing cyanogens cyanide or gold content be more than 0.05mg/L or silver content be more than 10mg/L or
It when copper content is more than 500mg/, repeats Step 2: the operation of step 3, until cyanide or gold, silver in tailing after stripping
Until the content for reaching requirement with copper content；
Step 5: acidification stripping neutralisation treatment：Filtrate is placed in reactor, acid for adjusting pH value is added to be filtered back to 2~3
Precipitation slag is received, supernatant is placed in aeration stripping device, and ventilate 1~3h of stripping, is generated gas and is passed through 5%~20% sodium hydroxide
Lye absorbs, and liquid is neutralized using milk of lime after stripping；
Step 6: advanced treating：Filtrate by active carbon adsorption column recycling gold after, using Yin Kefa, Ozonation or
Hydrogen peroxide oxidation method carries out broken cyanide processing, and treated, and filtrate is back in step 2 is washed as washings.
Positive press filtration device in the step one is a kind of dress that the moisture in material is made to penetrate filter cloth by front pressure
It puts, pressure size is 0.4~0.8Mpa, until time of filter pressing is not flowed out for filtrate.
Washings in the step two is clear water or add in the water of washing medicament, advanced treating in the step six
Water or the water of addition washing medicament, the two mixing water or both mixing afterwards adds in the water of washing medicament.
The washing medicament is surfactant, the mixture of dispersant, solubilizer；Wash water in step 1 just
Press through 0.2~2 times of filter cake weight after filter press filtration.
Embodiment one
In certain gold mine sludge containing cyanogens solid phase major pollutants CNT be 78.13mg/kg, CNf 52.45mg/kg,
Cu is 121.03mg/kg, Zn 64.56mg/kg.
Wherein No. 1 cyanogen-containing tailing slag is tested by the following method：
Sludge containing cyanogens are pumped into positive press filtration device, experimental rig is as shown in Figure 1, twisting rotary valve drives removable cover
Press filtration room is closed, air source is opened and press filtration is carried out by air from air inlet, press filtration chamber pressure is 0.4Mpa, and treating that filtrate is not flowed out is
Only, stop ventilation, unlatching water pump is pumped into clear water from water inlet and is washed, and is pumped into 0.2 times of water for press filtration filter cake weight, opens
It opens air source and press filtration and stripping is carried out by air from air inlet, press filtration chamber pressure is 0.4Mpa, until treating that filtrate is not flowed out, is continued
Ventilate stripping 2min, stops ventilation, and twisting rotary valve opens removable cover and filter cake is taken to carry out pollutant component analysis and toxicity leaching
Go out experiment.
Wherein No. 2 cyanogen-containing tailing slags are tested by the following method：
Sludge containing cyanogens are pumped into positive press filtration device, experimental rig is as shown in Figure 1, twisting rotary valve drives removable cover
Press filtration room is closed, air source is opened and press filtration is carried out by air from air inlet, press filtration chamber pressure is 0.5Mpa, and treating that filtrate is not flowed out is
Only, stop ventilation, unlatching water pump is pumped into clear water from water inlet and is washed, and is pumped into 0.4 times of water for press filtration filter cake weight, opens
It opens air source and press filtration and stripping is carried out by air from air inlet, press filtration chamber pressure is 0.5Mpa, until treating that filtrate is not flowed out, is continued
Ventilate stripping 2min, stops ventilation, and twisting rotary valve opens removable cover and filter cake is taken to carry out pollutant component analysis and toxicity leaching
Go out experiment.
Wherein No. 3 cyanogen-containing tailing slags are tested by the following method：
Sludge containing cyanogens are pumped into positive press filtration device, experimental rig is as shown in Figure 1, twisting rotary valve drives removable cover
Press filtration room is closed, air source is opened and press filtration is carried out by air from air inlet, press filtration chamber pressure is 0.8Mpa, and treating that filtrate is not flowed out is
Only, stop ventilation, unlatching water pump is pumped into clear water from water inlet and is washed, and is pumped into 1 times of water for press filtration filter cake weight, opens
Air source carries out press filtration and stripping from air inlet by air, and press filtration chamber pressure is 0.8Mpa, until treating that filtrate is not flowed out, continues to lead to
Air-blowing takes off 2min, stops ventilation, and twisting rotary valve opens removable cover and filter cake progress pollutant component analysis and toxicity is taken to leach
Experiment.
As shown in table 1 through major pollutants Washing ratio in analysis calculating filter cake, filter cake is analyzed through passing through toxicity characteristic leaching procedure,
Its result with《Hazardous waste judging standard leaching characteristic identification》(GB5085.3-2007) related data is compared in, 2# with
3# belongs to general industrial solid waste.
1 press filtration of table-washing-stripping result of the test
Embodiment two
Major pollutants CNT is 187.17mg/kg, CNf 165.68mg/ in certain gold mine sludge containing cyanogens solid phase
Kg, SCN-it is 197.75mg/kg, Cu 253.15mg/kg.
Wherein No. 1 cyanogen-containing tailing slag is tested by the following method：
Sludge containing cyanogens are pumped into positive press filtration device, twisting rotary valve drives removable cover closing press filtration room, opens gas
Source carries out press filtration from air inlet by air, and press filtration chamber pressure is 0.4Mpa, until treating that filtrate is not flowed out, stops ventilation, opens
Water pump is pumped into cleaning solution (into being grouped into from water inlet：Neopelex 5mg/L, cyclodextrin 2mg/L, sodium metasilicate
2mg/L and calcium hydroxide 2mg/L) it is washed, 0.2 times of water for press filtration filter cake weight is pumped into, opens air source from air inlet
Press filtration and stripping are carried out by air, press filtration chamber pressure is 0.4Mpa, until treating that filtrate is not flowed out, continues the stripping 6min that ventilates,
Stop ventilation, twisting rotary valve opens removable cover and filter cake is taken to carry out pollutant component analysis and toxicity characteristic leaching procedure, for the first time
Pressing filtering liquid adjusts pH value to 2, recycles the copper rhodanide of precipitation, and supernatant is passed through air and carries out stripping 2h, aerogenesis with 10% hydrogen
Sodium hydroxide solution absorbs, recovery of cyanide.
Wherein No. 2 cyanogen-containing tailing slags are tested by the following method：
Sludge containing cyanogens are pumped into positive press filtration device, twisting rotary valve drives removable cover closing press filtration room, opens gas
Source carries out press filtration from air inlet by air, and press filtration chamber pressure is 0.5Mpa, until treating that filtrate is not flowed out, stops ventilation, opens
Water pump is pumped into cleaning solution (into being grouped into from water inlet：Neopelex 5mg/L, cyclodextrin 2mg/L, sodium metasilicate
2mg/L and calcium hydroxide 2mg/L) it is washed, 0.5 times of water for press filtration filter cake weight is pumped into, opens air source from air inlet
Press filtration and stripping are carried out by air, press filtration chamber pressure is 0.5Mpa, until treating that filtrate is not flowed out, continues the stripping 6min that ventilates,
Stop ventilation, twisting rotary valve opens removable cover and filter cake is taken to carry out pollutant component analysis and toxicity characteristic leaching procedure, for the first time
Pressing filtering liquid adjusts pH value to 2, recycles the copper rhodanide of precipitation, and supernatant is passed through air and carries out stripping 2h, aerogenesis with 10% hydrogen
Sodium hydroxide solution absorbs, recovery of cyanide.
Wherein No. 3 cyanogen-containing tailing slags are tested by the following method：
Sludge containing cyanogens are pumped into positive press filtration device, twisting rotary valve drives removable cover closing press filtration room, opens gas
Source carries out press filtration from air inlet by air, and press filtration chamber pressure is 0.8Mpa, until treating that filtrate is not flowed out, stops ventilation, opens
Water pump is pumped into cleaning solution (into being grouped into from water inlet：Neopelex 5mg/L, cyclodextrin 2mg/L, sodium metasilicate
2mg/L and calcium hydroxide 2mg/L) it is washed, 1 times of water for press filtration filter cake weight is pumped into, air source is opened and leads to from air inlet
It crosses air and carries out press filtration and stripping, press filtration chamber pressure is 0.8Mpa, until treating that filtrate is not flowed out, continues the stripping 6min that ventilates, stops
It only ventilates, twisting rotary valve opens removable cover and filter cake is taken to carry out pollutant component analysis and toxicity characteristic leaching procedure, presses for the first time
Filtrate adjusts pH value to 2, recycles the copper rhodanide of precipitation, and supernatant is passed through air and carries out stripping 2h, aerogenesis with 10% hydrogen-oxygen
Change sodium solution to absorb, recovery of cyanide.
Major pollutants Washing ratio is calculated through analysis and the rate of recovery is as shown in table 2, and filter cake is through by toxicity characteristic leaching procedure point
Analysis, result with《Hazardous waste judging standard leaching characteristic identification》(GB5085.3-2007) related data is compared in, 2#
Belong to general industrial solid waste with 3#.
2 press filtrations of table-washing-stripping result of the test
Claims (4)
1. a kind of processing method of sludge containing cyanogens, which is characterized in that this method includes the following steps：
Step 1: positive press filtration：Sludge containing cyanogens are pumped into positive press filtration device, open air source or mechanical driver unit into promoting the circulation of qi
Pressure or mechanical compression filtering, filtrate return to the technological process of production or return to production technology stream after carrying out acidification stripping neutralisation treatment
Journey；
Step 2: washing：Positive press filtration device removable cover is adjusted, makes the sky of the vacant filter volumetric 1/5~4/5 of filter interior
Between, washings are pumped into toward filter interior using water pump, air source is opened or mechanical driver unit carries out air pressure or mechanical compression mistake
Filter, filtrate carry out advanced treating；Wherein the mass ratio of washings and mine tailings is 0.2~1；
Step 3: stripping：Positive press filtration device removable cover is adjusted, makes the sky of the vacant filter volumetric 1/5~1/2 of filter interior
Between, it can not have to adjustment according to air source positive press filtration device, air is passed through toward filter interior using air compressor machine or wind turbine and is blown
It is de-；
Step 4: if sludge containing cyanogens cyanide or gold content are more than 0.05mg/L or silver content is more than 10mg/L or copper contains
It when measuring as more than 500mg/, repeats Step 2: the operation of step 3, until cyanide or gold, silver and copper in tailing after stripping
Until content reaches the content of requirement；
Step 5: acidification stripping neutralisation treatment：Filtrate is placed in reactor, adding acid for adjusting pH value, it is heavy to be recovered by filtration to 2~3
Mud, supernatant are placed in aeration stripping device, and ventilate 1~3h of stripping, are generated gas and are passed through 5%~20% sodium hydroxide lye
It absorbs, liquid is neutralized using milk of lime after stripping；
Step 6: advanced treating：After filtrate is by active carbon adsorption column recycling gold, using Yin Kefa, Ozonation or dioxygen
Water oxidation carries out broken cyanide processing, and treated, and filtrate is back in step 2 is washed as washings.
2. the processing method of a kind of sludge containing cyanogens according to claim 1, which is characterized in that in the step one
Positive press filtration device is a kind of device that the moisture in material is made to penetrate filter cloth by front pressure, and pressure size is 0.4~0.8Mpa,
Until time of filter pressing is not flowed out for filtrate.
3. the processing method of a kind of sludge containing cyanogens according to claim 1, which is characterized in that in the step two
Washings are clear water or add in the water for washing medicament, and the water or addition in the step six after advanced treating wash medicament
Water, the two mixing water or both mixing adds in the water of washing medicament.
4. the processing method of a kind of sludge containing cyanogens according to claim 3, which is characterized in that the washing medicament is
Surfactant, dispersant, solubilizer mixture；Water is washed as filter cake weight after positive press filtration device press filtration in step 1
0.2~2 times.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108793509A (en) * | 2018-07-15 | 2018-11-13 | 长春黄金研究院有限公司 | A kind of method of cyanidation tailings cycle of higher pressure countercurrent washing recovery of cyanide |
| CN109022815A (en) * | 2018-08-31 | 2018-12-18 | 长春黄金研究院有限公司 | Gold Concentrate under Normal Pressure biological oxidation factory cyanogen slag recycles high pressure washing and lean solution watershed management method |
| CN109136561A (en) * | 2018-07-15 | 2019-01-04 | 长春黄金研究院有限公司 | The method of Gold Concentrate under Normal Pressure biological oxidation gold extraction enterprise cyanidation tailings high-pressure washing recycling gold |
| CN109650595A (en) * | 2019-01-17 | 2019-04-19 | 长春黄金研究院有限公司 | A kind of cyaniding tailing slurry harmless treatment and placement method |
| CN109970237A (en) * | 2019-03-28 | 2019-07-05 | 长春黄金研究院有限公司 | A kind of cyaniding tailing slurry decyanation processing method |
| CN111348770A (en) * | 2018-12-21 | 2020-06-30 | 赤峰吉隆矿业有限责任公司 | Innocent treatment process for cyanidation tailing pulp |
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| CN102206759A (en) * | 2010-03-30 | 2011-10-05 | 威海恒邦化工有限公司 | Decyanation method and apparatus of cyanogen-containing tailings |
| CN103086548A (en) * | 2013-03-01 | 2013-05-08 | 长春黄金研究院 | Harmless comprehensive treatment method for cyanide-containing tailing pulp |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102206759A (en) * | 2010-03-30 | 2011-10-05 | 威海恒邦化工有限公司 | Decyanation method and apparatus of cyanogen-containing tailings |
| CN103086548A (en) * | 2013-03-01 | 2013-05-08 | 长春黄金研究院 | Harmless comprehensive treatment method for cyanide-containing tailing pulp |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793509A (en) * | 2018-07-15 | 2018-11-13 | 长春黄金研究院有限公司 | A kind of method of cyanidation tailings cycle of higher pressure countercurrent washing recovery of cyanide |
| CN109136561A (en) * | 2018-07-15 | 2019-01-04 | 长春黄金研究院有限公司 | The method of Gold Concentrate under Normal Pressure biological oxidation gold extraction enterprise cyanidation tailings high-pressure washing recycling gold |
| CN109022815A (en) * | 2018-08-31 | 2018-12-18 | 长春黄金研究院有限公司 | Gold Concentrate under Normal Pressure biological oxidation factory cyanogen slag recycles high pressure washing and lean solution watershed management method |
| CN111348770A (en) * | 2018-12-21 | 2020-06-30 | 赤峰吉隆矿业有限责任公司 | Innocent treatment process for cyanidation tailing pulp |
| CN109650595A (en) * | 2019-01-17 | 2019-04-19 | 长春黄金研究院有限公司 | A kind of cyaniding tailing slurry harmless treatment and placement method |
| CN109970237A (en) * | 2019-03-28 | 2019-07-05 | 长春黄金研究院有限公司 | A kind of cyaniding tailing slurry decyanation processing method |
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