CN104226462A - Beneficiation method of refractory low-grade scheelite - Google Patents
Beneficiation method of refractory low-grade scheelite Download PDFInfo
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Abstract
The invention provides a beneficiation method of refractory low-grade scheelite. The method adopts slurry collecting agent ZX-01, slurry collecting agent 2-hydroxy-3 naphthoyl hydroxamic acid and slurry collecting agent ZW-12 which have high selective collecting capability; the method comprises the steps of finely grinding raw ore, carrying out slurry flotation, carrying out rapid beneficiation on scheelite, selecting the scheelite, carrying out slow beneficiation on scheelite, slowly selecting the scheelite, carrying out centrifugal reselection on middlings, and the like to finally obtain the scheelite concentrate. The low-grade scheelite sorted by the method is good in sorting indexes; the scheelite concentrate is higher in grade and yield; the beneficiation method of the refractory low-grade scheelite is stable, efficient, good in sorting effect, high in adaptability, high in recovery index and low in production cost, thus being suitable for popularization and application.
Description
Technical field
The invention belongs to ore dressing field, particularly relate to the beneficiation method that a kind of difficulty selects low-grade scheelite.
Background technology
Scheelite is contained in skarns and gneiss type mineral deposit more, cause the gangue mineral kind complexity derived in ore body, the gangue mineral content such as typical mica, feldspar, fluorite, allochite, chlorite are high and floatability good, high adsorption capacity and argillization is serious, easily enter tungsten Beneficiation flowsheet, be difficult to dispersion suppress, the ore dressing affecting tungsten is reclaimed; Meanwhile, most scheelite Beneficiation Feed Grade is lower and disseminated grain size is uneven, causes scheelite ore-dressing technique to be 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, aliphatic 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 not only Yin Jiawen flotation causes high cost, and cause selected pressure excessive because of gangue mineral character complexity, thus set up in flow process and put two mine tailing mouth last persons, cause tungsten to lose seriously in mine tailing; Two is " heavy-floating " process integrations based on gravity treatment, the character that the method is uneven according to scheelite disseminated grain size, the principle of " stage grinding-stage grading " is adopted to carry out gravity treatment recovery, the tungsten slurry obtained adopts floatation to reclaim, the method not only because scheelite Beneficiation Feed Grade is low, complicated and cause the gravity treatment rate of recovery low with the embedding cloth relation of gangue mineral, and the tungsten slurry sorting difficulty of repeatedly comminution generation, current ore dressing field there is no ripe technology to break through the bottleneck of tungsten slurry high efficiente callback, causes the method sorting scheelite comprehensive recovery on the low side.Therefore, be that synthetical recovery scheelite produces resource, be now badly in need of a kind of interference can getting 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 " a kind of beneficiation method of low-grade scheelite ", patent No. CN101869876A discloses a kind of beneficiation method of low-grade scheelite, it proposes to adopt gravity treatment to throw tail in advance, gravity concentrate removes iron mineral and sulphide ore with magnetic separation, floatation again, reclaims scheelite more afterwards with floatation of heating.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 rate of recovery 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 large 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, the object of the present invention is to provide a kind of stable, efficient, good separation effect, beneficiation method that the difficulty that adaptable, recovery index is high, production cost is low selects 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 is carried out sludge to scan, obtain sludge chats I and mine tailing II, the sludge that sludge chats I returns last layer 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 is 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 is carried out white tungsten and is selected soon, obtains white tungsten rough concentrate and mine tailing IV;
(7) the white tungsten rough concentrate that step (6) obtains is carried out selected five times, obtain tungsten concentrate and five selected chats, five selected chats sequentially turn back to last layer operation respectively;
(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) selected by the white tungsten that step (8) obtains rough concentrate to carry out slow essence twice slowly, obtain slow selected concentrate and two slow smart chats, slow selected concentrate feeds selected I operation in step (7);
(10) centrifugal reselection is carried out in two that step (9) are obtained slow smart chats merging, and obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, centrifugal reselection concentrate turns back to slow smart 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, three scan chats respectively order turn back to last layer operation, the centrifugal reselection mine tailing in white tungsten flotation tailing and step (10) merges and obtains total mine tailing.
Preferably, in step (1), in described scheelite raw ore, mog is that the content of-0.074mm accounts for 70 ~ 78% of total amount;
In step (2), described sludge is roughly selected process conditions and is: first adding adjusting agent sodium carbonate amount is 500 ~ 800g/t, and action time is 4 ~ 5min, then to add collecting agent ZX-01 consumption be 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 adjusting agent sodium carbonate amount is 50 ~ 150g/t, and action time is 4 ~ 5min.
In step (5), described sludge selects 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 process conditions to be soon: adding adjusting agent sodium carbonate amount is 300 ~ 500g/t, action time is 4 ~ 5min, adding waterglass consumption is again 300 ~ 500g/t, action time is 4 ~ 5min, finally add 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 to add waterglass consumption be 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 to add waterglass consumption be 20 ~ 50g/t, and action time is 4 ~ 5min.
In step (8), described white tungsten selects process conditions to be slowly: adding adjusting agent 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 slowly smart twice process conditions is: 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, to add collecting agent ZW-12 consumption be 100 ~ 150g/t, action time is 3 ~ 4min, scanning II, to add collecting agent ZW-12 consumption be 50 ~ 100g/t, action time is 3 ~ 4min, scanning III, to add collecting agent ZW-12 consumption be 20 ~ 50g/t, and action time is 3 ~ 4min.
Preferably, described collecting agent ZX-01 is the organic matter carrying out mixed preparing with dimethyl two coco-ammonium chloride, lauryl ether amine, lauryl amine sodium acetate according to the proportioning that mass ratio is (1.5 ~ 2.5): 1:1, and mixed preparing process is that normal temperature and pressure stirs 100 ~ 120min.
Preferably, the mass ratio in described collecting agent ZX-01 between dimethyl two coco-ammonium chloride, lauryl ether amine, lauryl amine sodium acetate is 2:1:1.
Preferably, described collecting agent ZW-12 is with oxine, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic carries out the organic matter of mixed preparing according to the proportioning that mass ratio is (1.5 ~ 2.5): 1:2:1, mixed preparing process is that normal temperature and pressure stirs.
Preferably, in described collecting agent ZW-12, the mass ratio of oxine, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic is 2:1:2:1.
The present invention overcomes the deficiencies in the prior art, provides a kind of difficulty to select the beneficiation method of low-grade scheelite, has following technical characterstic:
(1) for the gangue mineral characteristic that skarns and gneiss type tungsten deposit derive, this invention exploits the high sludge collecting agent ZX-01 selecting collecting ability, and adopt floatation to carry out predictive desliming, both solved the calcium-magnesium-containing gangue minerals such as mica, feldspar, fluorite and a large difficult problem had been affected on tungsten Beneficiation flowsheet, and turn avoid prior art and adopt gravity treatment desliming and the problem such as cause tungsten loss serious.This creationary thought and complete set technology are not integrally disclosed in scheelite technical field of beneficiation and are not easy to be conceived yet, and are a kind of scheelite beneficiation methods of stable, efficient, good separation effect.
(2) uneven for scheelite disseminated grain size, the characteristics such as floatability difference is large, the present invention adopts the easy fubai tungsten ore of highly selective collector 2-hydroxyl-3 naphthalene 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 flowage structure intensified sorting that the white tungsten rough concentrate obtained adopts " rough concentrate slowly selected-slow selected concentrate returns selected-slow cleaner tailings centrifugal reselection ", both prior art had been solved uneven and be difficult to select the difficult problem of ore-dressing technique for scheelite disseminated grain size, turn avoid and adopt flotation and the problem that causes production cost high of heating.This creationary thought is not integrally disclosed in scheelite technical field of beneficiation with the various medicament combinationally used and complete set technology and is not easy to be conceived yet, and is that a kind of adaptable, that recovery index is high, production cost is low difficulty selects low-grade scheelite beneficiation method.
(3) for slow smart chats fine size, the characteristic such as grade is low, floatability is poor, the flowage structure that the present invention adopts " chats merging centrifugal reselection-gravity concentrate returns selected-gravity tailings slowly and merges total tail " carries out synthetical recovery, solve prior art and be difficult to sorting 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, the invention has the advantages that:
1. solve the impact of gangue mineral on scheelite sorting, improve scheelite separating effect.
2. solve the impacts on sorting such as scheelite disseminated grain size is uneven, floatability difference is large, improve 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 the present invention's difficulty selects the beneficiation method of low-grade scheelite.
Detailed description of the invention
In order to make object 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 only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
By 150g dimethyl two coco-ammonium chloride, 100g lauryl ether amine, the mixing of 100g lauryl amine sodium acetate, normal temperature and pressure stirs 100 ~ 120min and obtains collecting agent ZX-01.
By 150g8-oxyquinoline, 100g lauric aldehyde, 200g Mei Dilan, 100g1,1,2-octyl tricarboxylic mixes, and normal temperature and pressure stirs and obtains collecting agent ZW-12.
Embodiment 2
By 250g dimethyl two coco-ammonium chloride, 100g lauryl ether amine, the mixing of 100g lauryl amine sodium acetate, normal temperature and pressure stirs 100 ~ 120min and obtains collecting agent ZX-01.
By 250g8-oxyquinoline, 100g lauric aldehyde, 200g Mei Dilan, 100g1,1,2-octyl tricarboxylic mixes, and normal temperature and pressure stirs and obtains collecting agent ZW-12.
Embodiment 3
By 200g dimethyl two coco-ammonium chloride, 100g lauryl ether amine, the mixing of 100g lauryl amine sodium acetate, normal temperature and pressure stirs 100 ~ 120min and obtains collecting agent ZX-01.
By 200g8-oxyquinoline, 100g lauric aldehyde, 200g Mei Dilan, 100g1,1,2-octyl tricarboxylic mixes, and normal temperature and pressure stirs and obtains 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 rate of recovery 62.37% that existing white tungsten flotation technology obtains.Adopt the collecting agent ZX-01 in embodiment 3 and collecting agent ZW-12.
Adopt scheelite ore dressing new method of the present invention to select low-grade scheelite to carry out sorting to this complicated difficult, 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 adjusting agent 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 is carried out sludge to scan, obtain sludge chats I and mine tailing II, the sludge that sludge chats I returns last layer 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 adjusting agent sodium carbonate amount is 100g/t, and action time is 5min;
(5) the sludge chats II that step (4) obtains is 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 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 is carried out white tungsten and is selected soon, obtains white tungsten rough concentrate and mine tailing IV; Wherein white tungsten selects process conditions to be soon: adding adjusting agent 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) the white tungsten rough concentrate that step (6) obtains is carried out selected five times, obtain tungsten concentrate and five selected chats, five selected chats sequentially turn back to last layer operation respectively; Wherein white selected five process conditions of tungsten rough concentrate are: selected I to add waterglass consumption be 150g/t, action time is 5min, and selected III consumption is for adding waterglass 100g/t, and action time is 5min, selected V to add waterglass consumption be 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 process conditions to be slowly: adding adjusting agent 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) selected by the white tungsten that step (8) obtains rough concentrate to carry out slow essence twice slowly, obtain slow selected concentrate and two slow smart chats, slow selected concentrate feeds selected I operation in step (7); Wherein white tungsten slowly smart twice process conditions be: 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) centrifugal reselection is carried out in two that step (9) are obtained slow smart chats merging, and obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, centrifugal reselection concentrate turns back to slow smart 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, three scan chats respectively order turn back to last layer operation, the centrifugal reselection mine tailing in white tungsten flotation tailing and step (10) merges and obtains total mine tailing; Wherein white tungsten is scanned three process conditions and is: scanning I, to add collecting agent ZW-12 consumption be 150g/t, action time is 3min, and scanning II, to add collecting agent ZW-12 consumption be 100g/t, and action time is 3min, scanning III, to add collecting agent ZW-12 consumption be 50g/t, and action time is 3min.
White tungsten fine ore tungstenic 61.28%, the rate of recovery 72.35% that the present embodiment obtains.
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 rate of recovery 64.25% that existing white tungsten flotation technology obtains.Adopt the collecting agent ZX-01 in embodiment 3 and collecting agent ZW-12.
Adopt white tungsten new flotation technique of the present invention to select low-grade scheelite to carry out sorting to this complicated difficult, 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 adjusting agent 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 is carried out sludge to scan, obtain sludge chats I and mine tailing II, the sludge that sludge chats I returns last layer 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 adjusting agent sodium carbonate amount is 150g/t, and action time is 5min;
(5) the sludge chats II that step (4) obtains is 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 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 is carried out white tungsten and is selected soon, obtains white tungsten rough concentrate and mine tailing IV; Wherein white tungsten selects process conditions to be soon: adding adjusting agent 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) the white tungsten rough concentrate that step (6) obtains is carried out selected five times, obtain tungsten concentrate and five selected chats, five selected chats sequentially turn back to last layer operation respectively; Wherein white selected five process conditions of tungsten rough concentrate are: selected I to add waterglass consumption be 150g/t, action time is 5min, and selected III consumption is for adding waterglass 60g/t, and action time is 5min, selected V to add waterglass consumption be 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 process conditions to be slowly: adding adjusting agent 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) selected by the white tungsten that step (8) obtains rough concentrate to carry out slow essence twice slowly, obtain slow selected concentrate and two slow smart chats, slow selected concentrate feeds selected I operation in step (7); Wherein white tungsten slowly smart twice process conditions be: 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) centrifugal reselection is carried out in two that step (9) are obtained slow smart chats merging, and obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, centrifugal reselection concentrate turns back to slow smart 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, three scan chats respectively order turn back to last layer operation, the centrifugal reselection mine tailing in white tungsten flotation tailing and step (10) merges and obtains total mine tailing; Wherein white tungsten is scanned three process conditions and is: scanning I, to add collecting agent ZW-12 consumption be 150g/t, action time is 3min, and scanning II, to add collecting agent ZW-12 consumption be 80g/t, and action time is 3min, scanning III, to add collecting agent ZW-12 consumption be 40g/t, and action time is 3min.
White tungsten fine ore tungstenic 62.65%, the rate of recovery 73.87% that the present embodiment obtains.
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 rate of recovery 58.27% that existing white tungsten flotation technology obtains.Adopt the collecting agent ZX-01 in embodiment 3 and collecting agent ZW-12.
Adopt white tungsten new flotation technique of the present invention to select low-grade scheelite to carry out sorting to this complicated difficult, 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 adjusting agent 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 is carried out sludge to scan, obtain sludge chats I and mine tailing II, the sludge that sludge chats I returns last layer 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 adjusting agent sodium carbonate amount is 100g/t, and action time is 5min;
(5) the sludge chats II that step (4) obtains is 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 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 is carried out white tungsten and is selected soon, obtains white tungsten rough concentrate and mine tailing IV; Wherein white tungsten selects process conditions to be soon: adding adjusting agent 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) the white tungsten rough concentrate that step (6) obtains is carried out selected five times, obtain tungsten concentrate and five selected chats, five selected chats sequentially turn back to last layer operation respectively; Wherein white selected five process conditions of tungsten rough concentrate are: selected I to add waterglass consumption be 150g/t, action time is 5min, and selected III consumption is for adding waterglass 75g/t, and action time is 5min, selected V to add waterglass consumption be 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 process conditions to be slowly: adding adjusting agent 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) selected by the white tungsten that step (8) obtains rough concentrate to carry out slow essence twice slowly, obtain slow selected concentrate and two slow smart chats, slow selected concentrate feeds selected I operation in step (7); Wherein white tungsten slowly smart twice process conditions be: 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) centrifugal reselection is carried out in two that step (9) are obtained slow smart chats merging, and obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, centrifugal reselection concentrate turns back to slow smart 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, three scan chats respectively order turn back to last layer operation, the centrifugal reselection mine tailing in white tungsten flotation tailing and step (10) merges and obtains total mine tailing; Wherein white tungsten is scanned three process conditions and is: scanning I, to add collecting agent ZW-12 consumption be 120g/t, action time is 3min, and scanning II, to add collecting agent ZW-12 consumption be 40g/t, and action time is 3min, scanning III, to add collecting agent ZW-12 consumption be 20g/t, and action time is 3min.
White tungsten fine ore tungstenic 57.68%, the rate of recovery 70.35% that the present embodiment obtains.
The content be not described in detail in this description is the known prior art of professional and technical personnel in the field.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. difficulty selects a beneficiation method for low-grade scheelite, it is characterized in that, 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 is carried out sludge to scan, obtain sludge chats I and mine tailing II, the sludge that sludge chats I returns last layer 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 is 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 is carried out white tungsten and is selected soon, obtains white tungsten rough concentrate and mine tailing IV;
(7) the white tungsten rough concentrate that step (6) obtains is carried out selected five times, obtain tungsten concentrate and five selected chats, five selected chats sequentially turn back to last layer operation respectively;
(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) selected by the white tungsten that step (8) obtains rough concentrate to carry out slow essence twice slowly, obtain slow selected concentrate and two slow smart chats, slow selected concentrate feeds selected I operation in step (7);
(10) centrifugal reselection is carried out in two that step (9) are obtained slow smart chats merging, and obtain centrifugal reselection concentrate and centrifugal reselection mine tailing, centrifugal reselection concentrate turns back to slow smart 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, three scan chats respectively order turn back to last layer operation, the centrifugal reselection mine tailing in white tungsten flotation tailing and step (10) merges and obtains total mine tailing.
2. difficulty as claimed in claim 1 selects the beneficiation method of low-grade scheelite, it is characterized in that, in step (1), in described scheelite raw ore, mog is that the content of-0.074mm accounts for 70 ~ 78% of total amount;
In step (2), described sludge is roughly selected process conditions and is: first adding adjusting agent sodium carbonate amount is 500 ~ 800g/t, and action time is 4 ~ 5min, then to add collecting agent ZX-01 consumption be 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.
3. difficulty as claimed in claim 2 selects the beneficiation method of low-grade scheelite, and it is characterized in that, in step (4), described sludge dressing process condition is: adding adjusting agent sodium carbonate amount is 50 ~ 150g/t, and action time is 4 ~ 5min.
4. difficulty as claimed in claim 3 selects the beneficiation method of low-grade scheelite, it is characterized in that, in step (5), described sludge selects process conditions to be again: adding collecting agent ZX-01 consumption is 20 ~ 50g/t, and action time is 3 ~ 4min.
5. difficulty as claimed in claim 4 selects the beneficiation method of low-grade scheelite, it is characterized in that, in step (6), described white tungsten selects process conditions to be soon: adding adjusting agent sodium carbonate amount is 300 ~ 500g/t, and action time is 4 ~ 5min, then to add waterglass consumption be 300 ~ 500g/t, action time is 4 ~ 5min, finally add 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 to add waterglass consumption be 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 to add waterglass consumption be 20 ~ 50g/t, and action time is 4 ~ 5min.
6. difficulty as claimed in claim 5 selects the beneficiation method of low-grade scheelite, it is characterized in that, in step (8), described white tungsten selects process conditions to be slowly: adding adjusting agent 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.
7. difficulty as claimed in claim 6 selects the beneficiation method of low-grade scheelite, it is characterized in that, in step (9), described white tungsten slowly smart twice process conditions is: it is 100 ~ 200g/t that slow essence I adds waterglass consumption, action time is 4 ~ 5min, slow smart II to add waterglass consumption be 50 ~ 100g/t, 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.
8. difficulty as claimed in claim 7 selects the beneficiation method of low-grade scheelite, it is characterized in that, in step (11), described white tungsten scans three process conditions: scanning I, to add collecting agent ZW-12 consumption be 100 ~ 150g/t, action time is 3 ~ 4min, and scanning II, to add collecting agent ZW-12 consumption be 50 ~ 100g/t, and action time is 3 ~ 4min, scanning III, to add collecting agent ZW-12 consumption be 20 ~ 50g/t, and action time is 3 ~ 4min.
9. difficulty as claimed in claim 8 selects the beneficiation method of low-grade scheelite, it is characterized in that, described collecting agent ZX-01 is the organic matter carrying out mixed preparing with dimethyl two coco-ammonium chloride, lauryl ether amine, lauryl amine sodium acetate according to the proportioning that mass ratio is (1.5 ~ 2.5): 1:1, and mixed preparing process is that normal temperature and pressure stirs 100 ~ 120min;
Described collecting agent ZW-12 is with oxine, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic carries out the organic matter of mixed preparing according to the proportioning that mass ratio is (1.5 ~ 2.5): 1:2:1, mixed preparing process is that normal temperature and pressure stirs.
10. difficulty as claimed in claim 9 selects the beneficiation method of low-grade scheelite, and it is characterized in that, the mass ratio in described collecting agent ZX-01 between dimethyl two coco-ammonium chloride, lauryl ether amine, lauryl amine sodium acetate is 2:1:1;
In described collecting agent ZW-12, the mass ratio of oxine, lauric aldehyde, Mei Dilan, 1,1,2-octyl tricarboxylic is 2:1:2:1.
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