CN107952577A - Difficulty selects cyanidation tailings preprocess method - Google Patents
Difficulty selects cyanidation tailings preprocess method Download PDFInfo
- Publication number
- CN107952577A CN107952577A CN201711242520.3A CN201711242520A CN107952577A CN 107952577 A CN107952577 A CN 107952577A CN 201711242520 A CN201711242520 A CN 201711242520A CN 107952577 A CN107952577 A CN 107952577A
- Authority
- CN
- China
- Prior art keywords
- ore pulp
- cyanidation tailings
- selects
- pulping
- ore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of difficulty to select cyanidation tailings preprocess method, comprises the following steps：(1) washup pulping：Difficulty is selected into cyanidation tailings washup, pulping；(2) ore pulp activates：Sulfuric acid is added into ore pulp obtained by step (1), while adds copper sulphate；(3) ore pulp press filtration：Filter cake is made in ore pulp press filtration obtained by step (2), filtrate recycles after processing；(4) ore pulp fine grinding：By filter cake again pulping, copper sulphate, ore grinding to predetermined fineness, into next step flotation operation are added.The present invention adds copper sulphate in preprocessing process, with the cyanide ion that complexing is newborn, material containing cyanogen and floating agent remaining in cyanidation tailings can be efficiently removed after washup, activation, press filtration and fine grinding processing, is conducive to the flotation recycling of follow-up valuable metal；Cyanide content is less than National Pollutant Discharge grade III Standard in filtrate after flotation tailing of the present invention and processing, and flotation tailing can further be made construction material, can be used for washup graded operation, remarkable in economical benefits after filtrate processing.
Description
Technical field
The invention belongs to technical field of mineral processing, and in particular to a kind of difficulty selects cyanidation tailings preprocess method.
Background technology
Cyanidation tailings are the waste residues of Cyanide Process generation during gold smelting, are stored up generally as solid waste
In Tailings Dam, most widely used stacked arrangement is dry heap method, and the Tailings Dam for storing up cyanidation tailings takes a large amount of soils, hypertoxic
Cyanide ion and heavy metal ion also would seriously pollute the environment once revealing, while there are the considerable safeties such as Tailings Dam dam break are hidden
Suffer from, the gold remained in tailings is also the wasting of resources, and China's gold industry cyanidation tailings, more than 30,000,000 tons, are made per annual emissions
Into economic loss up to tens yuan.
Extraction of gold by cyanidation generates a large amount of cyanidation tailings in the extensive use of gold factory of China, and cyanidation tailings usually contain
A variety of valuable elements such as gold, silver, copper, lead, zinc, can be that country brings good economic benefit and subtracts if synthetical recovery can be realized
Few pollution of the tailing to environment.Respectively select factory's cyanidation tailings distinct, the floatation process factor for influencing cyanidation tailings is complicated.Cyaniding
The distinguishing feature of tailings is fine size, clay content is big and contains a certain number of cyanides and remaining floating agent, therefore, recycling
Gold element therein is more difficult.
Cyanidation tailings pretreating process is the key technology that can cyanidation tailings effectively select again, and skill is pre-processed in cyanidation tailings
In terms of art, dense sulfuric acid treatment cyanidation tailings are currently mainly used, to remove remaining cyanide, and to the pretreatment of cyanidation tailings
Process is fairly simple, it is difficult to which fully removing residual floating agent and cyanide, are unfavorable for the flotation recycling of follow-up valuable metal.CN
101856635A discloses a kind of method that gold, silver, zinc in gold mine cyaniding tailings are recycled using mineral dressing backwater to float, this method ore deposit
Slurry pretreatment stage is the addition ore dressing backwater in cyanidation tailings, then adds the concentrated sulfuric acid and stirs 5 minutes, treats the concentrated sulfuric acid and ore pulp
Reagent removal by active carbon is added after reacting the cigarette that takes over 55 minutes, is then pumped to flotation workshop section, and this method can realize the comprehensive profit of tailing
With, but the residual medicament removing to cyanide and flotation is not thorough, and can be suppressed follow-up flotation recycling, be reduced the recycling of metal
Rate.
The content of the invention
It is an object of the invention to provide the difficulty that a kind of flow is simple, production cost is low, gold recovery is high to select cyanidation tailings
Preprocess method.
This difficulty provided by the invention selects cyanidation tailings preprocess method, comprises the following steps：
(1) washup pulping：Difficulty selects cyanidation tailings washup, pulping, obtains ore pulp；
(2) ore pulp activates：The concentrated sulfuric acid is added into the ore pulp obtained by step (1), while adds copper sulphate, is obtained after stirring
Activate ore pulp；
(3) ore pulp press filtration：Filter cake is made in activation ore pulp press filtration obtained by step (2), filtrate recycles after processing；
(4) ore pulp fine grinding：By filter cake again pulping, copper sulphate is added, ore grinding to predetermined fineness, makees into next step flotation
Industry.
In the step (1), cyanidation tailings are selected to remove impurity through log washer difficulty, the mass concentration of gained ore pulp after pulping
For 35~40%.
In the step (2), the addition concentrated sulfuric acid adjusts the pH of ore pulp to 4~5, while adds 90~100g/t of copper sulphate,
Then it is stirred in activation tank diameter, mixing time is 2~2.5h, activates ore pulp, and sulfuric acid can peel off mineral surfaces
Cyanide, copper sulphate be quickly complexed new life Cyanide ion.
In the step (3), the specific method of ore pulp press filtration is as follows：By the ore pulp after activation by filter press press filtration, make
Remain medicament together with heavy metal ion and filtrate with minerals separation, and cause filter cake in moisture be 17~20%；The filter
Liquid adds appropriate lime, and the metal ions such as copper ion are become sediment while neutralisation of sulphuric acid, and the pH to 7 of Filtrate~
8, Filtrate passes through the oxidation processes of natural sedimentation and air, cyano complex and all natural sedimentations of heavy metal reactant again,
Remaining organic medicament natural decomposition, the means of waste water reuse after processing reduce sewage quantity and reduce production cost in washup graded operation.
In the step (4), filter cake feeds pulping in slurry making machine by belt conveyor, ore pulp mass concentration 55 after pulping
~60%.
In the step (4), 90~100g/t of copper sulphate is added in the ball mill, utilizes copper ion and the network of Residuals
Cooperation is used, and is removed cyanogen again while increasing gold-carrying minerals degree of dissociation, is improved follow-up floatation indicators.
In the step (4), ball mill and hydrocyclone are formed into closed circuit grinding, the ore pulp of hydrocyclone overflow is thin
Degree reaches -0.038mm grain size contents and accounts for 70~75%.
Flotation operation is in the step (4)：Ore pulp after ore grinding is sized mixing, roughing operation is then carried out, obtains
Rougher concentration and rougher tailings, to rougher tailings scan for 3 times, scan 1 and scan 2 gained rough concentrates and are closed with roughing rough concentrate
And then carry out 2 times it is selected obtain Gold Concentrate under Normal Pressure, other chats orders return to a upper flotation flowsheet, and the tailing for scanning 3 can be made into building
Material.
Heretofore described " g/t " refers to additive amount of the medicament relative to raw ore, if the dosage of copper sulphate is 100g/t,
Refer to that handling one ton of raw ore needs to add copper sulphate 100g.
Compared with prior art, advantageous effects of the invention are：
(1) present invention adds copper sulphate in preprocessing process, with the cyanide ion that complexing is newborn, by washup, activation,
Material containing cyanogen and floating agent remaining in cyanidation tailings can be efficiently removed after press filtration and fine grinding processing, is conducive to subsequently have
The flotation recycling of valency metal.
(2) flotation tailing of the present invention and cyanide content in the filtrate after processing are less than National Pollutant Discharge three-level mark
Standard, flotation tailing can further be made construction material, can be used for washup graded operation after filtrate processing, reduce sewage quantity and reduce
Production cost, environmental benefit protrude, remarkable in economical benefits.
Brief description of the drawings
Fig. 1 is the process flow chart of the embodiment of the present invention 1.
Embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments, based on the embodiments of the present invention, the common skill in this area
Art personnel all other embodiments obtained without making creative work, belong to the model that the present invention protects
Enclose.
The present invention provides a kind of difficulty and selects cyanidation tailings preprocess method, comprises the following steps：
(1) washup pulping：Cyanidation tailings can be mixed into the impurity such as more sandstone, plastic cloth, sawdust during stockpiling,
This partial impurities, which must be removed thoroughly, could enter follow-up flotation operation, and tailings containing cyanogen is handled using specially designed log washer,
Log washer will can realize efficiently separating for ore pulp and impurity, gained ore deposit during the cyanidation tailings pulping of paste or solid-like
The mass concentration of slurry is 35~40%, and the ore pulp of the concentration is more conducive to subsequent pipeline conveying；
(2) ore pulp activates：Contain more Residuals in cyanidation tailings, such as lime, cyanide, xanthate collectors
Deng this kind of medicament can cause greatly to disturb to follow-up flotation operation, influence the floatability of valuable mineral.In order to remove as far as possible
The Residuals such as lime, cyanide, xanthate are removed, recover the floatability of valuable mineral, the ore pulp after washup is had to pass through at activation
Reason.Specifically activation method is：The concentrated sulfuric acid is added in tank diameter is activated and adjusts pH values of pulp to 4~5, at the same add dosage for 90~
The copper sulphate of 100g/t, 2~2.5h of mechanical agitation.Activation tank diameter passes through special transformation, and ore pulp dispersiveness is more preferable, in strong mixing
During can suck more air, increase the oxygen concentration in ore pulp, accelerate the oxidation rate of remaining xanthate class medicament.It is remaining
Lime can and sulfuric acid reaction produce the medicaments such as sl. sol. calcium sulfate, remaining cyanide can with effect of sulfuric acid and make mineral surfaces
This kind of medicament dissolution enter liquid in, the part thereof gangue in ore can also be produced by sulfuric acid dissolution heavy metal from
The free metal ion that son, the copper ion of addition and dissolving go out can produce precipitation with Cyanide ion complexation, so that significantly
Reduce the concentration of Cyanide；
(3) ore pulp press filtration：The medicaments such as part xanthate are still remained in ore pulp after activation, these medicaments and free heavy metal
Ion can all produce follow-up flotation operation greatly interference, living in order to make these harmful substances as far as possible with minerals separation
Ore pulp after change by filter press press filtration, make most residual medicament together with heavy metal ion and filtrate with minerals separation,
17~20%, filtrate adds appropriate lime for moisture in filter cake, and neutralisation of sulphuric acid while becomes the metal ions such as copper ion
Sediment, the pH to 7~8 of Filtrate, Filtrate again by precipitation and air oxidation, cyano complex with again
Metal reactant all natural sedimentations, remaining organic medicament natural decomposition, then means of waste water reuse is in washup graded operation, reduction sewage
Measure and reduce production cost；
(4) ore pulp fine grinding：Gained filter cake is fed into pulping in specially designed slurry making machine by belt conveyor, after pulping
Ore pulp mass concentration can reach 55~60%.The type slurry making machine aims at filter cake pulping job design, small, pulping efficiency
Height, pulping concentration is adjustable, low in energy consumption.After cyaniding is handled, most of exposed gold is dissolved cyanidation tailings by cyanide, remains
Remaining gold mainly wraps up gold, and flotation is mainly the gold recycled in sulfide, and during cyaniding, sulfide surface can be by cyanogen
The medicaments such as compound corrode, and floatability is substantially reduced, it is necessary to by ore grinding come the surface of " cleaning " sulfide mineral, it is recovered again
With the ability of collecting agent effect.In order to improve the grade of gold, it is also desirable to which further fine grinding increases the degree of dissociation of gold-carrying minerals.Institute
With the ore pulp after slurry making machine pulping need to enter ball mill and carry out fine grinding.Since the residual medicament for acting on mineral surfaces can be
Disintegrated down during fine grinding from mineral surfaces, therefore be added in an amount of the copper sulphate of 90~100g/t in the ball mill, utilized
The complexing of copper ion and Residuals, further reduces the residual medicament such as cyanide, useful mineral floating will not be produced
It is raw to suppress, in order to increase grinding efficiency, it is overground to prevent that levigate mineral from producing, ball mill and hydrocyclone composition is closed circuit
Ore grinding, the slurry fineness of hydrocyclone overflow reach -0.038mm grain size contents and account for 70~75%, make into next step flotation
Industry：Gained ore pulp mass concentration after ore grinding is adjusted to 30~35%, excessive concentration or too low is unfavorable for flotation.Adjust ore pulp
The flotation of sulfide mineral is more preferable under pH to 6~7, the pH, and the ore pulp after ore grinding is sized mixing, and then carries out roughing operation,
Rougher concentration and rougher tailings are obtained, rougher tailings scan for 3 times, 1 is scanned and scans 2 gained rough concentrates and roughing is coarse-fine
Ore deposit merges, then carry out 2 times it is selected obtain Gold Concentrate under Normal Pressure, other chats orders return to a upper flotation flowsheet, scan 3 tailing and can be made into
Construction material.
Unless otherwise specified, the reagent used is ordinary commercial products or is obtained by conventional means preparation the present embodiment
, the equipment of use is conventional equipment in the art, is the section Example of inventor in test below：
Embodiment 1
Main valuable element is golden in the cyanidation tailings of Shandong, gold grade 3.05g/t.Golden main preservation is in sulfide mineral
In oxide mineral, golden distributive law is respectively 55%, 15%, and monomeric gold and intergrowth gold content are 30%, and sulfide mineral is main
For pyrite, zincblende, galena, gangue is mainly quartz, mica and feldspar in ore, the gold being easily recycled for monomeric gold and
Gold in intergrowth gold and sulfide mineral, selects cyanidation tailings preprocess method, process flow chart is such as using a kind of difficulty of the present invention
Shown in Fig. 1, comprise the following steps that：
(1) washup pulping：The ore pulp that mass concentration is 50% is made in cyanidation tailings sample ore, is with screen size
The stainless steel sub-sieve of 0.147mm removes the impurity such as sandstone, sawdust, and it is 40% that the ore pulp under sieving, which is sized mixing to mass concentration,；
(2) ore pulp activates：The pH to 4 of ore pulp is adjusted using the concentrated sulfuric acid, then adds copper sulphate 90g/t, is stirred with activation
Groove continuously stirs 2.5h；
(3) ore pulp press filtration：Ore pulp after activation is passed through into filter press press filtration so that the moisture in filter cake is 18% or so,
Filtrate processing is by adding appropriate lime neutralisation of sulphuric acid, while the metal ions such as copper ion is produced precipitation, Filtrate
Staticly settle, supernatant continues on for washup graded operation；
(4) ore pulp fine grinding：By filter cake be made mass concentration be 60% ore pulp, add copper sulphate 90g/t, ore grinding to-
0.038mm accounts for 70%, into next step flotation operation；
Gained ore pulp mass concentration after ore grinding is adjusted to 35%, sodium hydroxide is added and adjusts pH values of pulp to 6, according to Fig. 1
Middle floatation process：
Roughing operation：Waterglass 700g/t is added, stirs 5min；Copper sulphate 120g/t is added, stirs 5min；Addition
(mercapto benzothiazole, mercaptan, the mass ratio of sulphur nitrogen propylene are 3 to the YP-35 of the Y-89 of 120g/t, 60g/t:1:2), stir
3min；MIBC 15g/t are added, 2min is stirred, rougher concentration and rougher tailings is obtained through roughing；
Scan operation：Rougher tailings is scanned step by step, scans 1 addition waterglass 150g/t, stirs 5min；Add Y-
89 100g/t, YP-35 40g/t, stir 3min；MIBC 15g/t are added, stir 2min, 1 obtained concentrate is scanned and enters essence
1 is selected, 1 obtained tailing entrance is scanned and scans 2；2 addition Y-89 60g/t, YP-35 25g/t are scanned, 3min is stirred, scans 2 choosings
Obtained concentrate enters selected 1, scans 2 obtained tailings entrance and scans 3；3 addition Y-89 20g/t are scanned, 3min is stirred, sweeps
Select 3 obtained concentrate to return and scan 2, it is tailing to scan 3 tailings, and tailing can be made into construction material.
Selected operation：To rougher concentration, scan 1 and scan carried out after 2 obtained rough concentrates merge it is selected step by step, selected 1
Waterglass 160g/t is added, stirs 5min, selected 1 obtained concentrate enters selected 2, selected 1 obtained tailing and returns to roughing；Essence
Select the waterglass 15g/t of 2 addition 110g/t Linx385 (mass ratio of lignosulphonic acid, carboxymethyl cellulose and dextrin be 2:1:
2) 5min, is stirred, selected 2 obtained concentrate are as Gold Concentrate under Normal Pressure, and selected 2 obtained tailings return to selected 1, and final flotation results are such as
Shown in table 1.
Comparative example 1
By direct ore grinding after cyanidation tailings washup pulping in Shandong in embodiment 1, without pretreatment, according to embodiment 1
Middle floatation process carries out closed circuit float test to ore pulp, comprises the following steps that：
(1) washup pulping：The ore pulp that mass concentration is 80% is made in cyanidation tailings sample ore, is with screen size
The stainless steel sub-sieve of 0.147mm removes the impurity such as sandstone, sawdust；
(2) ore pulp fine grinding：By ore pulp ore grinding mass concentration be 65% under conditions of fine grinding, make mog reach-
0.038mm grain size contents account for 70%, into flotation operation：According to floatation process in embodiment 1, the final flotation results such as institute of table 1
Show：
The flotation results of 1 Shandong cyanidation tailings of table
From contrast test as can be seen that flotation effect is better than unpretreated after pretreatment, not only grade golden in concentrate
Than unpretreated high 6.17g/t, the rate of recovery is even more to be higher by 18.84%.
Embodiment 2
Main valuable element is gold in the cyanidation tailings of Sichuan microbial pretreatment-all sliming cyanidation technique, and gold grade is
4.49g/t.For golden main preservation in sulfide and gangue, golden distributive law is respectively 65%, 35%, and sulfide mineral is mainly yellow iron
Ore deposit, containing a small amount of mispickel, gangue is mainly quartz, calcite, feldspar, and the gold being easily recycled is the gold in sulfide mineral, utilizes this
Invention provides a kind of difficulty and selects cyanidation tailings preprocess method, comprises the following steps that：
(1) washup pulping：The ore pulp that mass concentration is 45% is made in cyanidation tailings sample ore, is with screen size
The stainless steel sub-sieve of 0.147mm removes the impurity such as sandstone, sawdust, and it is 35% that the ore pulp under sieving, which is sized mixing to mass concentration,；
(2) ore pulp activates：The pH to 5 of ore pulp is adjusted using the concentrated sulfuric acid, then adds copper sulphate 100g/t, is stirred with activation
Groove continuously stirs 2h；
(3) ore pulp press filtration：Ore pulp after activation is passed through into filter press press filtration so that the moisture in filter cake is 20%, filtrate
Handle as by adding appropriate lime neutralisation of sulphuric acid, while the metal ions such as copper ion is produced precipitation, Filtrate is stood
Precipitation, supernatant continue on for washup graded operation；
(4) ore pulp fine grinding：By filter cake be made mass concentration be 55% ore pulp, add copper sulphate 100g/t, ore grinding to-
0.038mm accounts for 75%, and it is 30% that ore pulp obtained by ore grinding, which is sized mixing to mass concentration, addition sodium hydroxide adjustment pH values of pulp to 7, so
Enter next step flotation operation afterwards.
Roughing operation：Waterglass 750g/t is added, stirs 5min；Copper sulphate 100g/t is added, stirs 5min；Addition
Y-89 the and 30g/t YP-35 of 150g/t, stir 3min；MIBC 18g/t are added, 2min is stirred, rougher concentration is obtained through roughing
And rougher tailings；
Scan operation：Rougher tailings is scanned step by step, scans 1 addition waterglass 200g/t, stirs 5min；Addition
The YP-35 of the Y-89 and 50g/t of 80g/t, stir 3min；Add MIBC 10g/t, stir 2min, scan 1 obtained concentrate into
Enter selected 1, scan the entrance of 1 tailing and scan 2；Y-89 the and 30g/t YP-35 of 2 addition 50g/t are scanned, stir 3min, 2 is scanned and obtains
The concentrate arrived enters selected 1, scans 2 obtained tailings entrance and scans 3；3 addition Y-89 30g/t are scanned, 3min is stirred, scans 3
Obtained concentrate returns and scans 2, scans 3 obtained tailings and can be made into construction material.
Selected operation：To rougher concentration, scan 1 and scan carried out after 2 obtained rough concentrates merge it is selected step by step, selected 1
Waterglass 200g/t is added, stirs 5min, selected 1 obtained concentrate enters selected 2, selected 1 obtained tailing and returns to roughing；Essence
Selecting the waterglass of 2 addition 150g/t, the Linx385 of 20g/t stirs 5min, and selected 2 obtained concentrate are as Gold Concentrate under Normal Pressure, and selected 2
Obtained tailing returns to selected 1.
Comparative example 2
By direct ore grinding after cyanidation tailings washup pulping in Sichuan in embodiment 2, without pretreatment, according to embodiment 2
Middle floatation process carries out closed circuit float test to ore pulp, comprises the following steps that：
(1) washup pulping：The ore pulp that mass concentration is 80% is made in cyanidation tailings sample ore, is with screen size
The stainless steel sub-sieve of 0.147mm removes the impurity such as sandstone, sawdust；
(2) ore pulp fine grinding：By ore pulp ore grinding mass concentration be 65% under conditions of fine grinding, make mog reach-
0.038mm grain size contents account for 70%, into flotation operation：According to floatation process in embodiment 2, the final flotation results such as institute of table 2
Show：
The handling result of 2 Sichuan cyanidation tailings of table
From contrast test as can be seen that flotation effect is better than unpretreated after pretreatment, not only grade golden in concentrate
Than unpretreated high 12.02g/t, the rate of recovery is even more to be higher by 31.14%.
Embodiment 3
Commerical test：
Using the cyanidation tailings pretreatment of embodiment 1 and floatation process, industrial production test day output is 300 tons, is floated
The results are shown in Table 3 for choosing：
The flotation results of 3 commerical test of table
Commercial test results show that cyanidation tailings preprocess method successful commercialization of the present invention, achieves and real
Test similar in the washability experiment of room as a result, gold grade and the rate of recovery respectively reach 15.82g/t, 64.29%, economy effect in concentrate
It is beneficial notable.
Found after analysis cyanide content, cyanide content is up to 190.83mg/L in cyanidation tailings raw ore, using pre- place
The filtrate of science and engineering skill cyanide content after simple process is 3.68mg/L, and cyanide content is 0.93mg/L in flotation tailing,
Cyanide content reaches national sewage discharge grade III Standard in tailing, can continue reuse, filtrate discharge after filtrate simple process
Pass through natural sedimentation and oxidation to Tailings Dam, the Residuals in waste water can be decomposed further, and cyanide content is reduced to
Within 0.96mg/L, cyanide content equally reaches national sewage discharge grade III Standard.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of difficulty selects cyanidation tailings preprocess method, comprise the following steps：
(1) washup pulping：Difficulty selects cyanidation tailings washup, pulping, obtains ore pulp；
(2) ore pulp activates：The concentrated sulfuric acid is added into the ore pulp obtained by step (1), while adds copper sulphate, is activated after stirring
Ore pulp；
(3) ore pulp press filtration：Filter cake is made in activation ore pulp press filtration obtained by step (2), filtrate recycles after processing；
(4) ore pulp fine grinding：By filter cake again pulping, copper sulphate, ore grinding to predetermined fineness, into next step flotation operation are added.
2. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that difficult choosing in the step (1)
Cyanidation tailings remove impurity through log washer, and the mass concentration of gained ore pulp is 35~40% after pulping.
3. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that addition in the step (2)
The concentrated sulfuric acid adjusts the pH to 4~5 of ore pulp.
4. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that sulfuric acid in the step (2)
The additive amount of copper adds 90~100g for raw ore relatively per ton.
5. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that stirring in the step (2)
Carried out in activation tank diameter, mixing time is 2~2.5h.
6. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that in the step (3), ore pulp
The specific method of press filtration is as follows：Ore pulp after activation is passed through into filter press press filtration so that the moisture in filter cake is 17~20%.
7. the difficulty according to claim 1 or 6 selects cyanidation tailings preprocess method, it is characterised in that in the step (3),
Lime is added in filtrate, adjusts the pH to 7~8 of filtrate, filtrate by natural sedimentation and the oxidation processes of air, is given up after processing again
Water is used further to washup graded operation.
8. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that in the step (4), filter cake
Pulping in slurry making machine is fed by belt conveyor, ore pulp mass concentration is 55~60% after pulping.
9. difficulty according to claim 1 selects cyanidation tailings preprocess method, it is characterised in that in the step (4), in ball
The additive amount of copper sulphate adds 90~100g for raw ore relatively per ton in grinding machine.
10. the difficulty according to claim 1 or 9 selects cyanidation tailings preprocess method, it is characterised in that in the step (4),
By ball mill and hydrocyclone composition closed circuit grinding, the slurry fineness of hydrocyclone overflow reaches -0.038mm grain size contents
Account for 70~75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242520.3A CN107952577B (en) | 2017-11-30 | 2017-11-30 | Difficulty selects cyanidation tailings preprocess method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242520.3A CN107952577B (en) | 2017-11-30 | 2017-11-30 | Difficulty selects cyanidation tailings preprocess method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107952577A true CN107952577A (en) | 2018-04-24 |
| CN107952577B CN107952577B (en) | 2019-09-13 |
Family
ID=61962709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711242520.3A Active CN107952577B (en) | 2017-11-30 | 2017-11-30 | Difficulty selects cyanidation tailings preprocess method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107952577B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940148A (en) * | 2020-07-27 | 2020-11-17 | 莱州市鸿铖矿业环保开发有限公司 | Comprehensive utilization and harmless treatment method for cyanidation tailings |
| CN113042190A (en) * | 2021-03-19 | 2021-06-29 | 山东金创金银冶炼有限公司 | Flotation pretreatment method for pyrite in cyanide-containing and sulfur-containing tailings |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101658819A (en) * | 2009-08-03 | 2010-03-03 | 招金矿业股份有限公司 | Multielement composite recovery process |
| CN102505077A (en) * | 2011-12-30 | 2012-06-20 | 中矿金业股份有限公司 | Method for recovering valuable elements from cyanide tailings |
| CN102784722A (en) * | 2012-08-27 | 2012-11-21 | 桐柏银矿有限责任公司 | Flotation process for cyanide tailings in silver concentrates |
| CN103831165A (en) * | 2014-03-18 | 2014-06-04 | 湖南黄金洞矿业有限责任公司 | Harmless treatment method of gold cyanidation tailings highly containing arsenic |
-
2017
- 2017-11-30 CN CN201711242520.3A patent/CN107952577B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101658819A (en) * | 2009-08-03 | 2010-03-03 | 招金矿业股份有限公司 | Multielement composite recovery process |
| CN102505077A (en) * | 2011-12-30 | 2012-06-20 | 中矿金业股份有限公司 | Method for recovering valuable elements from cyanide tailings |
| CN102784722A (en) * | 2012-08-27 | 2012-11-21 | 桐柏银矿有限责任公司 | Flotation process for cyanide tailings in silver concentrates |
| CN103831165A (en) * | 2014-03-18 | 2014-06-04 | 湖南黄金洞矿业有限责任公司 | Harmless treatment method of gold cyanidation tailings highly containing arsenic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940148A (en) * | 2020-07-27 | 2020-11-17 | 莱州市鸿铖矿业环保开发有限公司 | Comprehensive utilization and harmless treatment method for cyanidation tailings |
| CN113042190A (en) * | 2021-03-19 | 2021-06-29 | 山东金创金银冶炼有限公司 | Flotation pretreatment method for pyrite in cyanide-containing and sulfur-containing tailings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107952577B (en) | 2019-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107952590B (en) | The method of gold is recycled from cyanidation tailings | |
| CN100361751C (en) | Method for floatation and recovery of lead zinc mixed concentrate from gold mine cyaniding slag tails | |
| CN101845562B (en) | Improved device and method for producing electrolytic manganese metal by two-ore method | |
| CN101856635B (en) | Method using mineral dressing backwater to float and to recover gold, silver, lead and zinc in cyanidation tailings of gold mine | |
| CN101972703B (en) | Beneficiation method for recovering zinc, lead and silver from zinc leaching residue | |
| CN101214470A (en) | Method for using cyaniding barren solution to float, reclaim and cyaniding copper plumbum and zinc in tailings | |
| CN102319629B (en) | Activation flotation method for sulfide minerals inhibited by cyanide ions | |
| CN113976307B (en) | Flotation separation method of lead zinc sulfide ore difficult to separate and zinc blende inhibitor thereof | |
| CN103831165B (en) | High containing arsenic gold cyanidation tailings method for innocent treatment | |
| CN102527497B (en) | Beneficiation method for separating zinc sulfide ores from sulphur in wet-method zinc smelting slag | |
| CN107952577B (en) | Difficulty selects cyanidation tailings preprocess method | |
| CN109734057A (en) | A kind of method of zinc oxygen leaching slag Recovered sulphur and silver | |
| CN103184334A (en) | Selection-smelting combined technology for treating mixed ore containing molybdenum, oxygen, sulfur and copper | |
| CN102728476A (en) | Flotation method for comprehensively recycling zinc from tailings generated by directly cyaniding gold concentrates | |
| CN104745833B (en) | A kind of handling process for high golden paint ore | |
| CN109590107B (en) | Process for recovering sulfur and valuable metals from copper oxygen pressure leaching slag | |
| CN110523543A (en) | A kind of technique recycling copper sulphur valuable element from copper sulfide oxygen leaching slag | |
| CN113019708A (en) | Oxidation flotation separation process for copper-molybdenum bulk concentrate | |
| CN104961269A (en) | Nonferrous metal mine acidic wastewater comprehensive treatment method | |
| CN114558688B (en) | Beneficiation method for refractory copper lead zinc ore | |
| CN115888970A (en) | Cyanide removal treatment method for cyanidation tailings | |
| CN101912821A (en) | Method for enriching sulfur and iron elements from cyanide tailings by using functional composite sol | |
| CN102784722B (en) | Flotation process for cyanide tailings in silver concentrates | |
| CN107570318A (en) | Beneficiation method for recovering copper from molybdenum dressing tailings | |
| CN107617507A (en) | Gold, the new technology of sulphur are reclaimed in a kind of biological oxidation cyanidation tailings from Gold Concentrate under Normal Pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |