CN104226462B - A kind of difficulty selects the beneficiation method of low-grade scheelite - Google Patents
A kind of difficulty selects the beneficiation method of low-grade scheelite Download PDFInfo
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Abstract
The invention provides a kind of difficulty and select the beneficiation method of low-grade scheelite, height is adopted to select the sludge collecting agent ZX-01 of collecting ability, collecting agent 2-hydroxyl-3 naphthalene first hydroximic acid and collecting agent ZW-12, by including that raw ore is levigate, slime flotation, the step such as white tungsten selects soon, white tungsten tungsten selected, white selects slowly, white tungsten selected, chats centrifugal reselection slowly, finally obtain white tungsten fine ore。The low grade white tungsten Ore separation index of present invention sorting is good, white tungsten fine ore grade is all higher with the response rate, a kind of stable, efficient, good separation effect, the difficulty that adaptable, recovery index is high, production cost is low select low-grade scheelite beneficiation method, be suitable to popularization and application。
Description
Technical field
The invention belongs to ore dressing field, particularly relate to a kind of difficulty and select the beneficiation method of low-grade scheelite。
Background technology
Scheelite is contained in skarns and gneiss type mineral deposit more, cause that the gangue mineral kind derived in ore body is complicated, the gangue mineral content such as typical Muscovitum, Anhydrite, fluorite, allochite, chlorite are high and floatability is good, high adsorption capacity and argillization are serious, easily enter tungsten Beneficiation flowsheet, being difficult to dispersion suppress, the ore dressing affecting tungsten is reclaimed；Meanwhile, most scheelite Beneficiation Feed Grades are relatively low and disseminated grain size is uneven, cause that scheelite ore-dressing technique is difficult to select。Based on this type of reason, existing scheelite mainly adopts two kinds of methods to reclaim, one based on flotation " Peter Nuo Fufa ", sodium carbonate adjusts agent, inhibitor made by waterglass, fatty acid carries out normal temperature flotation as collecting agent in the method employing, underflow heating concentration is carried out after obtaining the tungsten rough concentrate of grade higher (about 2%), the method is not only because flotation of heating causes high cost, and because gangue mineral character complexity causes that selected pressure is excessive, thus flow process is set up and puts two mine tailing mouth last persons, cause that tungsten loses seriously in mine tailing；Two is " weight-floating " process integration based on gravity treatment, the method is according to the uneven character of scheelite disseminated grain size, the principle adopting " stage grinding-stage grading " carries out gravity treatment recovery, the tungsten slurry obtained adopts floatation to reclaim, because scheelite Beneficiation Feed Grade is low and the embedding cloth relation of gangue mineral is complicated, the method not only causes that the gravity treatment response rate is low, and the tungsten slurry sorting difficulty that repeatedly comminution produces, current ore dressing field there is no the technology of maturation to break through the bottleneck of tungsten slurry high efficiente callback, causes that the method sorting scheelite comprehensive recovery is on the low side。Therefore, produce resource for synthetical recovery scheelite, be now badly in need of a kind of interference that can get rid of gangue mineral, again can the beneficiation method of, the characteristic such as disseminated grain size uneven low according to scheelite Beneficiation Feed Grade and high efficiente callback scheelite。
Chinese invention patent " beneficiation method of a kind of low-grade scheelite ", patent No. CN101869876A discloses the beneficiation method of a kind of low-grade scheelite, it proposes to adopt gravity treatment to throw tail in advance, gravity concentrate with magnetic separation, floatation elimination iron mineral and sulphide ore, reclaims scheelite with floatation of heating again afterwards again。Although the method adopts gravity separation method to be stripped of part mica group gangue mineral in advance, but also have lost a large amount of fine fraction scheelite simultaneously, described in this patent working case, in gravity tailings, tungsten loss rate is up to 15～30%, to such an extent as to the white tungsten fine ore response rate only 50～63%。Therefore, this patent is not high to the scheelite efficiency of separation, and the scope of application is narrower。
Summary of the invention
The problem such as big for the gangue mineral impact existed in the existing technique of preparing of low-grade scheelite, sorting difficulty is high, the efficiency of separation is low, flotation collecting weak effect, comprehensive recovery are not high, it is an object of the invention to provide a kind of stable, efficient, good separation effect, the difficulty that adaptable, recovery index is high, production cost is low selects the beneficiation method of low-grade scheelite。
The present invention is achieved in that a kind of difficulty selects the beneficiation method of low-grade scheelite, comprises the following steps:
(1) scheelite raw ore is taked, levigate；
(2) ore pulp after levigate carries out sludge and roughly selects, and obtains sludge rough concentrate and mine tailing I；
(3) mine tailing I that step (2) obtains being carried out sludge to scan, obtain sludge chats I and mine tailing II, sludge chats I returns the sludge of last layer and roughly selects operation；
(4) the sludge rough concentrate that step (2) obtains is carried out sludge selected, obtain slime product and sludge chats II；
(5) the sludge chats II that step (4) obtains being carried out sludge to select again, obtain sludge chats III and mine tailing III, sludge chats III returns the selected operation of sludge of last layer；
(6) mine tailing III merging that the mine tailing II step (3) obtained and step (5) obtain carries out white tungsten and selects soon, obtains white tungsten rough concentrate and mine tailing IV；
(7) being carried out selected five times by the white tungsten rough concentrate that step (6) obtains, obtain tungsten concentrate and five selected chats, five selected chats orders respectively return to last layer operation；
(8) mine tailing IV that step (6) obtains is carried out white tungsten to select slowly, obtain white tungsten and select rough concentrate and mine tailing V slowly；
(9) the white tungsten that step (8) obtains selecting rough concentrate carry out slow essence twice slowly, obtains slow selected concentrate and two slow essence chats, slow selected concentrate feeds selected I operation in step (7)；
(10) two slow essence chats merging step (9) obtained carry out centrifugal reselection, obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, and centrifugal reselection concentrate returns to smart slowly I operation in step (9)；
(11) mine tailing V that step (8) obtains is carried out white tungsten and scan three times, obtain white tungsten flotation tailing and three scan chats, scanning chats order respectively for three and return to last layer operation, white tungsten flotation tailing merges with the centrifugal reselection mine tailing in step (10) and obtains total mine tailing。
Preferably, in step (1), in described scheelite raw ore, mog is that the content of-0.074mm accounts for the 70～78% of total amount；
In step (2), described sludge is roughly selected process conditions and is: being initially charged regulator sodium carbonate amount is 500～800g/t, and action time is 4～5min, and adding collecting agent ZX-01 consumption is 150～300g/t, and action time is 3～4min；
In step (3), described sludge is scanned process conditions and is: adding collecting agent ZX-01 consumption is 50～100g/t, and action time is 3～4min。
In step (4), described sludge dressing process condition is: adding regulator sodium carbonate amount is 50～150g/t, and action time is 4～5min。
In step (5), described sludge selects the process conditions to be again: adding collecting agent ZX-01 consumption is 20～50g/t, and action time is 3～4min。
In step (6), described white tungsten selects the process conditions to be soon: adding regulator sodium carbonate amount is 300～500g/t, action time is 4～5min, adding waterglass consumption is 300～500g/t, action time is 4～5min, being eventually adding collecting agent 2-hydroxyl-3 naphthalene first hydroximic acid, consumption is 200～300g/t, and action time is 3～4min；
In step (7), selected five process conditions of described white tungsten rough concentrate are: selected I addition waterglass consumption is 100～200g/t, action time is 4～5min, selected III consumption is for adding waterglass 50～100g/t, action time is 4～5min, selected V addition waterglass consumption is 20～50g/t, and action time is 4～5min。
In step (8), described white tungsten selects the process conditions to be slowly: adding regulator sodium carbonate amount is 200～300g/t, action time is 4～5min, waterglass consumption is 200～300g/t, action time is 4～5min, collecting agent ZW-12 consumption is 300～400g/t, and action time is 3～4min。
In step (9), described white tungsten smart twice process conditions slowly are: it is 100～200g/t that slow essence I adds waterglass consumption, and action time is 4～5min, and it is 50～100g/t that slow essence II adds waterglass consumption, and action time is 4～5min；
In step (10), described centrifugal reselection process conditions are: centrifugal ore separator rotary drum rotating speed is 350～400r/min, washing water quantity 1～3L/min。
In step (11), described white tungsten scans three process conditions: scanning I addition collecting agent ZW-12 consumption is 100～150g/t, action time is 3～4min, scanning II addition collecting agent ZW-12 consumption is 50～100g/t, action time is 3～4min, scanning III addition collecting agent ZW-12 consumption is 20～50g/t, and action time is 3～4min。
Preferably, described collecting agent ZX-01 is the Organic substance carrying out mixed preparing with dimethyl two coco-ammonium chloride, dodecyl ether amines, lauryl amine sodium acetate according to the proportioning that mass ratio is (1.5～2.5): 1:1, and mixed preparing process is normal temperature and pressure stirring 100～120min。
Preferably, in described collecting agent ZX-01, mass ratio between dimethyl two coco-ammonium chloride, dodecyl ether amines, lauryl amine sodium acetate is 2:1:1。
Preferably, described collecting agent ZW-12 be with oxine, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic carries out the Organic substance of mixed preparing according to the proportioning that mass ratio is (1.5～2.5): 1:2:1, and mixed preparing process is that normal temperature and pressure stirs。
Preferably, oxine in described collecting agent ZW-12, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic mass ratio be 2:1:2:1。
The present invention overcomes the deficiencies in the prior art, it is provided that a kind of difficulty selects the beneficiation method of low-grade scheelite, has techniques below feature:
(1) for the gangue mineral characteristic that skarns and gneiss type tungsten deposit are derivative, the present invention develops the high sludge collecting agent ZX-01 selecting collecting ability, and adopt floatation to carry out predictive desliming, both the difficult problem that the calcium-magnesium-containing gangue minerals such as Muscovitum, Anhydrite, fluorite are big on the impact of tungsten Beneficiation flowsheet had been solved, problems such as turn avoid prior art employing gravity treatment desliming and cause tungsten loss serious。This creationary thought and complete set technology are made as a whole not being disclosed in scheelite technical field of beneficiation and are also not easy to be conceived, and are the scheelite beneficiation methods of a kind of stable, efficient, good separation effect。
(2) uneven for scheelite disseminated grain size, the characteristics such as floatability difference is big, the present invention adopts highly selective collector 2-hydroxyl-3 naphthalene easy fubai tungsten ore of first hydroximic acid fast-flotation, avoid the mechanical loss easily selecting scheelite, develop high-efficient collecting agent ZW-12 strengthening recovery difficulty and select scheelite, the white tungsten rough concentrate obtained adopts the flowage structure intensified sorting of " rough concentrate selected-slow selected concentrate slowly returns selected-slow cleaner tailings centrifugal reselection ", both solved prior art for scheelite disseminated grain size uneven and be difficult to select ore-dressing technique a difficult problem, turn avoid and adopt the problem heated flotation and cause production cost high。Various medicaments and complete set technology that this creationary thought and combination use are made as a whole not being disclosed in scheelite technical field of beneficiation and are also not easy to be conceived, and are that a kind of difficulty adaptable, that recovery index is high, production cost is low selects low-grade scheelite beneficiation method。
(3) for slow essence chats fine size, the characteristic such as grade is low, floatability is poor, the present invention adopts the flowage structure of " chats merges centrifugal reselection-gravity concentrate and returns selected-gravity tailings total tail of merging slowly " to carry out synthetical recovery, solve prior art to be difficult to sort and the difficult problem that it can be used as mine tailing to discharge, improve scheelite comprehensive recovery and concentrate grade。
Compared with prior art, it is an advantage of the current invention that:
1. solve the impact that scheelite is sorted by gangue mineral, improve scheelite separating effect。
2. the impact solving that scheelite disseminated grain size is uneven, floatability difference is big etc. to sorting, improves scheelite sorting index。
3. solve Scheelite Flotation chats because of fine size, grade is low, floatability is poor and reclaim difficulty problem, reduce production cost, improve scheelite comprehensive recovery。
Accompanying drawing explanation
Fig. 1 is the flow chart of steps that difficulty of the present invention selects the beneficiation method of low-grade scheelite。
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
Embodiment 1
By 150g dimethyl two coco-ammonium chloride, 100g dodecyl ether amines, the mixing of 100g lauryl amine sodium acetate, normal temperature and pressure stirring 100～120min obtains collecting agent ZX-01。
By 150g8-hydroxyquinoline, 100g lauric aldehyde, 200g Mei Dilan, 100g1,1,2-octyl tricarboxylic mixing, normal temperature and pressure is uniformly mixing to obtain collecting agent ZW-12。
Embodiment 2
By 250g dimethyl two coco-ammonium chloride, 100g dodecyl ether amines, the mixing of 100g lauryl amine sodium acetate, normal temperature and pressure stirring 100～120min obtains collecting agent ZX-01。
By 250g8-hydroxyquinoline, 100g lauric aldehyde, 200g Mei Dilan, 100g1,1,2-octyl tricarboxylic mixing, normal temperature and pressure is uniformly mixing to obtain collecting agent ZW-12。
Embodiment 3
By 200g dimethyl two coco-ammonium chloride, 100g dodecyl ether amines, the mixing of 100g lauryl amine sodium acetate, normal temperature and pressure stirring 100～120min obtains collecting agent ZX-01。
By 200g8-hydroxyquinoline, 100g lauric aldehyde, 200g Mei Dilan, 100g1,1,2-octyl tricarboxylic mixing, normal temperature and pressure is uniformly mixing to obtain collecting agent ZW-12。
Embodiment 4
The raw ore tungstenic 0.19% sorted, in Ore, tungsten mineral exists with the form of scheelite, and embedding cloth feature is complicated, and disseminated grain size is uneven, and monomer dissociation is poor。Adopt white tungsten fine ore tungstenic 58.34%, the response rate 62.37% that existing white tungsten flotation technology obtains。Adopt the collecting agent ZX-01 in embodiment 3 and collecting agent ZW-12。
This complicated difficult is selected low-grade scheelite to sort by the scheelite ore dressing new method adopting the present invention, and it sorts step and is:
(1) scheelite raw ore is taked, levigate；Wherein mog accounts for 76% for-0.074mm content；
(2) ore pulp after levigate carries out sludge and roughly selects, and obtains sludge rough concentrate and mine tailing I；Wherein sludge is roughly selected process conditions and is: adding regulator sodium carbonate amount is 700g/t, and action time is 5min, and collecting agent ZX-01 consumption is 250g/t, and action time is 3min；
(3) mine tailing I that step (2) obtains being carried out sludge to scan, obtain sludge chats I and mine tailing II, sludge chats I returns the sludge of last layer and roughly selects operation；Wherein sludge is scanned process conditions and is: adding collecting agent ZX-01 consumption is 70g/t, and action time is 3min；
(4) the sludge rough concentrate that step (2) obtains is carried out sludge selected, obtain slime product and sludge chats II；Wherein sludge dressing process condition is: adding regulator sodium carbonate amount is 100g/t, and action time is 5min；
(5) the sludge chats II that step (4) obtains being carried out sludge to select again, obtain sludge chats III and mine tailing III, sludge chats III returns the selected operation of sludge of last layer；Wherein sludge selects the process conditions to be again: adding collecting agent ZX-01 consumption is 40g/t, and action time is 3min；
(6) mine tailing III merging that the mine tailing II step (3) obtained and step (5) obtain carries out white tungsten and selects soon, obtains white tungsten rough concentrate and mine tailing IV；Wherein white tungsten selects the process conditions to be soon: adding regulator sodium carbonate amount is 400g/t, and action time is 5min, and waterglass consumption is 400g/t, and action time is 5min, and collecting agent 2-hydroxyl-3 naphthalene first hydroximic acid consumption is 250g/t, and action time is 3min；
(7) being carried out selected five times by the white tungsten rough concentrate that step (6) obtains, obtain tungsten concentrate and five selected chats, five selected chats orders respectively return to last layer operation；Wherein white selected five process conditions of tungsten rough concentrate are: selected I addition waterglass consumption is 150g/t, action time is 5min, and selected III consumption is for adding waterglass 100g/t, and action time is 5min, selected V addition waterglass consumption is 50g/t, and action time is 5min；
(8) mine tailing IV that step (6) obtains is carried out white tungsten to select slowly, obtain white tungsten and select rough concentrate and mine tailing V slowly；Wherein white tungsten selects the process conditions to be slowly: adding regulator sodium carbonate amount is 300g/t, and action time is 5min, and waterglass consumption is 200g/t, and action time is 5min, and collecting agent ZW-12 consumption is 300g/t, and action time is 3min；
(9) the white tungsten that step (8) obtains selecting rough concentrate carry out slow essence twice slowly, obtains slow selected concentrate and two slow essence chats, slow selected concentrate feeds selected I operation in step (7)；Wherein white tungsten smart twice process conditions slowly are: it is 150g/t that slow essence I adds waterglass consumption, and action time is 5min, and it is 100g/t that slow essence II adds waterglass consumption, and action time is 5min；
(10) two slow essence chats merging step (9) obtained carry out centrifugal reselection, obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, and centrifugal reselection concentrate returns to smart slowly I operation in step (9)；Wherein centrifugal reselection process conditions are: centrifugal ore separator rotary drum rotating speed is 350r/min, washing water quantity 2L/min；
(11) mine tailing V that step (8) obtains is carried out white tungsten and scan three times, obtain white tungsten flotation tailing and three scan chats, scanning chats order respectively for three and return to last layer operation, white tungsten flotation tailing merges with the centrifugal reselection mine tailing in step (10) and obtains total mine tailing；Wherein white tungsten is scanned three process conditions and is: scanning I addition collecting agent ZW-12 consumption is 150g/t, action time is 3min, and scanning II addition collecting agent ZW-12 consumption is 100g/t, and action time is 3min, scanning III addition collecting agent ZW-12 consumption is 50g/t, and action time is 3min。
The white tungsten fine ore tungstenic 61.28% of the present embodiment acquisition, the response rate 72.35%。
Embodiment 5
The raw ore tungstenic 0.21% sorted, in Ore, tungsten mineral is composed and is existed in scheelite, and embedding cloth feature is complicated, and disseminated grain size is uneven, and monomer dissociation is poor。Adopt white tungsten fine ore tungstenic 60.17%, the response rate 64.25% that existing white tungsten flotation technology obtains。Adopt the collecting agent ZX-01 in embodiment 3 and collecting agent ZW-12。
This complicated difficult is selected low-grade scheelite to sort by the white tungsten new flotation technique adopting the present invention, and it sorts step and is:
(1) scheelite raw ore is taked, levigate；Wherein mog accounts for 75% for-0.074mm content；
(2) ore pulp after levigate carries out sludge and roughly selects, and obtains sludge rough concentrate and mine tailing I；Wherein sludge is roughly selected process conditions and is: adding regulator sodium carbonate amount is 600g/t, and action time is 5min, and collecting agent ZX-01 consumption is 250g/t, and action time is 3min；
(3) mine tailing I that step (2) obtains being carried out sludge to scan, obtain sludge chats I and mine tailing II, sludge chats I returns the sludge of last layer and roughly selects operation；Wherein sludge is scanned process conditions and is: adding collecting agent ZX-01 consumption is 75g/t, and action time is 3min；
(4) the sludge rough concentrate that step (2) obtains is carried out sludge selected, obtain slime product and sludge chats II；Wherein sludge dressing process condition is: adding regulator sodium carbonate amount is 150g/t, and action time is 5min；
(5) the sludge chats II that step (4) obtains being carried out sludge to select again, obtain sludge chats III and mine tailing III, sludge chats III returns the selected operation of sludge of last layer；Wherein sludge selects the process conditions to be again: adding collecting agent ZX-01 consumption is 40g/t, and action time is 3min；
(6) mine tailing III merging that the mine tailing II step (3) obtained and step (5) obtain carries out white tungsten and selects soon, obtains white tungsten rough concentrate and mine tailing IV；Wherein white tungsten selects the process conditions to be soon: adding regulator sodium carbonate amount is 400g/t, and action time is 5min, and waterglass consumption is 300g/t, and action time is 5min, and collecting agent 2-hydroxyl-3 naphthalene first hydroximic acid consumption is 250g/t, and action time is 3min；
(7) being carried out selected five times by the white tungsten rough concentrate that step (6) obtains, obtain tungsten concentrate and five selected chats, five selected chats orders respectively return to last layer operation；Wherein white selected five process conditions of tungsten rough concentrate are: selected I addition waterglass consumption is 150g/t, action time is 5min, and selected III consumption is for adding waterglass 60g/t, and action time is 5min, selected V addition waterglass consumption is 40g/t, and action time is 5min；
(8) mine tailing IV that step (6) obtains is carried out white tungsten to select slowly, obtain white tungsten and select rough concentrate and mine tailing V slowly；Wherein white tungsten selects the process conditions to be slowly: adding regulator sodium carbonate amount is 250g/t, and action time is 5min, and waterglass consumption is 300g/t, and action time is 5min, and collecting agent ZW-12 consumption is 350g/t, and action time is 3min；
(9) the white tungsten that step (8) obtains selecting rough concentrate carry out slow essence twice slowly, obtains slow selected concentrate and two slow essence chats, slow selected concentrate feeds selected I operation in step (7)；Wherein white tungsten smart twice process conditions slowly are: it is 150g/t that slow essence I adds waterglass consumption, and action time is 5min, and it is 100g/t that slow essence II adds waterglass consumption, and action time is 5min；
(10) two slow essence chats merging step (9) obtained carry out centrifugal reselection, obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, and centrifugal reselection concentrate returns to smart slowly I operation in step (9)；Wherein centrifugal reselection process conditions are: centrifugal ore separator rotary drum rotating speed is 350r/min, washing water quantity 2.5L/min；
(11) mine tailing V that step (8) obtains is carried out white tungsten and scan three times, obtain white tungsten flotation tailing and three scan chats, scanning chats order respectively for three and return to last layer operation, white tungsten flotation tailing merges with the centrifugal reselection mine tailing in step (10) and obtains total mine tailing；Wherein white tungsten is scanned three process conditions and is: scanning I addition collecting agent ZW-12 consumption is 150g/t, action time is 3min, and scanning II addition collecting agent ZW-12 consumption is 80g/t, and action time is 3min, scanning III addition collecting agent ZW-12 consumption is 40g/t, and action time is 3min。
The white tungsten fine ore tungstenic 62.65% of the present embodiment acquisition, the response rate 73.87%。
Embodiment 6
The raw ore tungstenic 0.18% sorted, in Ore, tungsten mineral exists with the form of scheelite, and embedding cloth feature is complicated, and disseminated grain size is uneven, and monomer dissociation is poor。Adopt white tungsten fine ore tungstenic 55.34%, the response rate 58.27% that existing white tungsten flotation technology obtains。Adopt the collecting agent ZX-01 in embodiment 3 and collecting agent ZW-12。
This complicated difficult is selected low-grade scheelite to sort by the white tungsten new flotation technique adopting the present invention, and it sorts step and is:
(1) scheelite raw ore is taked, levigate；Wherein mog accounts for 78% for-0.074mm content；
(2) ore pulp after levigate carries out sludge and roughly selects, and obtains sludge rough concentrate and mine tailing I；Wherein sludge is roughly selected process conditions and is: adding regulator sodium carbonate amount is 600g/t, and action time is 5min, and collecting agent ZX-01 consumption is 300g/t, and action time is 3min；
(3) mine tailing I that step (2) obtains being carried out sludge to scan, obtain sludge chats I and mine tailing II, sludge chats I returns the sludge of last layer and roughly selects operation；Wherein sludge is scanned process conditions and is: adding collecting agent ZX-01 consumption is 70g/t, and action time is 3min；
(4) the sludge rough concentrate that step (2) obtains is carried out sludge selected, obtain slime product and sludge chats II；Wherein sludge dressing process condition is: adding regulator sodium carbonate amount is 100g/t, and action time is 5min；
(5) the sludge chats II that step (4) obtains being carried out sludge to select again, obtain sludge chats III and mine tailing III, sludge chats III returns the selected operation of sludge of last layer；Wherein sludge selects the process conditions to be again: adding collecting agent ZX-01 consumption is 30g/t, and action time is 3min；
(6) mine tailing III merging that the mine tailing II step (3) obtained and step (5) obtain carries out white tungsten and selects soon, obtains white tungsten rough concentrate and mine tailing IV；Wherein white tungsten selects the process conditions to be soon: adding regulator sodium carbonate amount is 400g/t, and action time is 5min, and waterglass consumption is 400g/t, and action time is 5min, and collecting agent 2-hydroxyl-3 naphthalene first hydroximic acid consumption is 250g/t, and action time is 3min；
(7) being carried out selected five times by the white tungsten rough concentrate that step (6) obtains, obtain tungsten concentrate and five selected chats, five selected chats orders respectively return to last layer operation；Wherein white selected five process conditions of tungsten rough concentrate are: selected I addition waterglass consumption is 150g/t, action time is 5min, and selected III consumption is for adding waterglass 75g/t, and action time is 5min, selected V addition waterglass consumption is 30g/t, and action time is 5min；
(8) mine tailing IV that step (6) obtains is carried out white tungsten to select slowly, obtain white tungsten and select rough concentrate and mine tailing V slowly；Wherein white tungsten selects the process conditions to be slowly: adding regulator sodium carbonate amount is 250g/t, and action time is 5min, and waterglass consumption is 200g/t, and action time is 5min, and collecting agent ZW-12 consumption is 300g/t, and action time is 3min；
(9) the white tungsten that step (8) obtains selecting rough concentrate carry out slow essence twice slowly, obtains slow selected concentrate and two slow essence chats, slow selected concentrate feeds selected I operation in step (7)；Wherein white tungsten smart twice process conditions slowly are: it is 150g/t that slow essence I adds waterglass consumption, and action time is 5min, and it is 80g/t that slow essence II adds waterglass consumption, and action time is 5min；
(10) two slow essence chats merging step (9) obtained carry out centrifugal reselection, obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, and centrifugal reselection concentrate returns to smart slowly I operation in step (9)；Wherein centrifugal reselection process conditions are: centrifugal ore separator rotary drum rotating speed is 380r/min, washing water quantity 1.8L/min；
(11) mine tailing V that step (8) obtains is carried out white tungsten and scan three times, obtain white tungsten flotation tailing and three scan chats, scanning chats order respectively for three and return to last layer operation, white tungsten flotation tailing merges with the centrifugal reselection mine tailing in step (10) and obtains total mine tailing；Wherein white tungsten is scanned three process conditions and is: scanning I addition collecting agent ZW-12 consumption is 120g/t, action time is 3min, and scanning II addition collecting agent ZW-12 consumption is 40g/t, and action time is 3min, scanning III addition collecting agent ZW-12 consumption is 20g/t, and action time is 3min。
The white tungsten fine ore tungstenic 57.68% of the present embodiment acquisition, the response rate 70.35%。
The content not being described in detail in this specification is the known prior art of professional and technical personnel in the field。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention。
Claims (1)
1. a difficulty selects the beneficiation method of low-grade scheelite, it is characterised in that comprise the following steps:
(1) scheelite raw ore is taked, levigate；Wherein mog is that the content of-0.074mm accounts for the 70～78% of total amount；
(2) ore pulp after levigate carries out sludge and roughly selects, and obtains sludge rough concentrate and mine tailing I；Wherein sludge is roughly selected process conditions and is: being initially charged regulator sodium carbonate amount is 500～800g/t, and action time is 4～5min, and adding collecting agent ZX-01 consumption is 150～300g/t, and action time is 3～4min；
(3) mine tailing I that step (2) obtains being carried out sludge to scan, obtain sludge chats I and mine tailing II, sludge chats I returns the sludge of last layer and roughly selects operation；Wherein sludge is scanned process conditions and is: adding collecting agent ZX-01 consumption is 50～100g/t, and action time is 3～4min；
(4) the sludge rough concentrate that step (2) obtains is carried out sludge selected, obtain slime product and sludge chats II；Wherein sludge dressing process condition is: adding regulator sodium carbonate amount is 50～150g/t, and action time is 4～5min；
(5) the sludge chats II that step (4) obtains being carried out sludge to select again, obtain sludge chats III and mine tailing III, sludge chats III returns the selected operation of sludge of last layer；Wherein sludge selects the process conditions to be again: adding collecting agent ZX-01 consumption is 20～50g/t, and action time is 3～4min；
(6) mine tailing III merging that the mine tailing II step (3) obtained and step (5) obtain carries out white tungsten and selects soon, obtains white tungsten rough concentrate and mine tailing IV；Wherein white tungsten selects the process conditions to be soon: adding regulator sodium carbonate amount is 300～500g/t, action time is 4～5min, adding waterglass consumption is 300～500g/t, action time is 4～5min, it is eventually adding collecting agent 2-hydroxyl-3 naphthalene first hydroximic acid, consumption is 200～300g/t, and action time is 3～4min；
(7) being carried out selected five times by the white tungsten rough concentrate that step (6) obtains, obtain tungsten concentrate and five selected chats, five selected chats orders respectively return to last layer operation；Wherein white selected five process conditions of tungsten rough concentrate are: selected I addition waterglass consumption is 100～200g/t, action time is 4～5min, selected III consumption is for adding waterglass 50～100g/t, action time is 4～5min, selected V addition waterglass consumption is 20～50g/t, and action time is 4～5min；
(8) mine tailing IV that step (6) obtains is carried out white tungsten to select slowly, obtain white tungsten and select rough concentrate and mine tailing V slowly；Wherein white tungsten selects the process conditions to be slowly: adding regulator sodium carbonate amount is 200～300g/t, action time is 4～5min, and waterglass consumption is 200～300g/t, and action time is 4～5min, collecting agent ZW-12 consumption is 300～400g/t, and action time is 3～4min；
(9) the white tungsten that step (8) obtains selecting rough concentrate carry out slow essence twice slowly, obtains slow selected concentrate and two slow essence chats, slow selected concentrate feeds selected I operation in step (7)；Wherein white tungsten smart twice process conditions slowly are: it is 100～200g/t that slow essence I adds waterglass consumption, and action time is 4～5min, and it is 50～100g/t that slow essence II adds waterglass consumption, and action time is 4～5min；
(10) two slow essence chats merging step (9) obtained carry out centrifugal reselection, obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, and centrifugal reselection concentrate returns to smart slowly I operation in step (9)；Wherein centrifugal reselection process conditions are: centrifugal ore separator rotary drum rotating speed is 350～400r/min, washing water quantity 1～3L/min；
(11) mine tailing V that step (8) obtains is carried out white tungsten and scan three times, obtain white tungsten flotation tailing and three scan chats, scanning chats order respectively for three and return to last layer operation, white tungsten flotation tailing merges with the centrifugal reselection mine tailing in step (10) and obtains total mine tailing；Wherein white tungsten is scanned three process conditions and is: scanning I addition collecting agent ZW-12 consumption is 100～150g/t, action time is 3～4min, scanning II addition collecting agent ZW-12 consumption is 50～100g/t, action time is 3～4min, scanning III addition collecting agent ZW-12 consumption is 20～50g/t, and action time is 3～4min；Described collecting agent ZX-01 is the Organic substance carrying out mixed preparing with dimethyl two coco-ammonium chloride, dodecyl ether amines, lauryl amine sodium acetate according to the proportioning that mass ratio is (1.5-2.5): 1:1, and mixed preparing process is normal temperature and pressure stirring 100-120min；Described collecting agent ZW-12 be with oxine, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic carries out the Organic substance of mixed preparing according to the proportioning that mass ratio is (1.5-2.5): 1:2:1, and mixed preparing process is that normal temperature and pressure stirs。
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