CN102773152A - Fine flaky-cryptocrystalline mixed graphite separation technique - Google Patents
Fine flaky-cryptocrystalline mixed graphite separation technique Download PDFInfo
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Abstract
The invention discloses a fine flaky-cryptocrystalline mixed graphite separation technique which comprises the following steps: primary rough grinding and rough separation, quintic regrinding and sextic concentrating, and middling centralized processing. According to the technique, in the rough separation step, the grinding fineness is -0.074mm, and the content is 90-95%; in the concentrating step, the regrinding fineness is -0.045mm, and the content is 90-95%; and thus, the graphite monomer is sufficiently dissociated, thereby sufficiently ensuring the fixed carbon content and recovery rate of the concentrated concentrate. The technique adopts gradually decreased low concentrating concentrations in multiple concentrating process to ensure the dispersity of ore slurry, thereby solving the severe problem of entrapped impurities in floatation foam; and thus, in the final concentrate, the fixed carbon content is 91.35%, and the recovery rate is 91.30%, thereby solving the problems of low technical indexes, low grade, low recovery rate and high cost in the fine flaky-cryptocrystalline mixed graphite concentrate separation, so that the fine flaky-cryptocrystalline mixed graphite ores are utilized in an efficient, economical and reasonable way.
Description
Technical field
The present invention relates to a kind of graphite mineral processing, be specifically related to a kind of thin scale-cryptocrystalline mixed type graphite mineral processing.
Background technology
Graphite resource is the superior resources mineral of China, and China's graphite resource is abundant, and reserves and volume of production and marketing all occupy first place in the world.Graphite ore can be divided into crystalloid graphite ore and aphanitic graphite ore by the crystal habit difference, and the crystalloid graphite ore is divided into compact crystal shape graphite ore and crystalline flake graphite ore again.The occurring in nature graphite ore mainly exists with the form of crystalline flake graphite.Crystalline flake graphite is bigger because of its scale, and crystallization degree is good, and its natural floatability is also better, therefore adopts conventional flotation beneficiation flow process just can utilize preferably, and general dresser's artistic skill obtains graphite concentrate fixed carbon content >=90%, the product of the rate of recovery >=90%; This product can be used as the graphite primary product and sells.And other a part of graphite exists with thin scale-cryptocrystalline mixed type graphite ore form; This type ore is owing to contain relatively poor aphanitic graphite of floatability and clay class gangue mineral in the ore; The mineral disseminated grain size is thin; Flotation effect is relatively poor, and the graphite concentrate fixed carbon content and the rate of recovery are all lower and can not use conventional flotation process to recycle.
Sichuan Ping He has abundant graphite ore resource, and ore belongs to thin scale-cryptocrystalline mixed type particulate difficulty and selects graphite ore, is important graphite production base, China southwest.Ore is because disseminated grain size is thin, and clay mineral content is high, and it is serious the flotation argillization to occur when therefore adopting conventional floatation process to handle, and floating agent is complicated; Flotation froth viscosity is big, and it is serious that foam is carried impurity secretly, and flotation time is long; Problems such as flotation flowsheet is complicated, and chats is hard to manage finally cause the concentrate fixed carbon content and the rate of recovery not high; General fixed carbon content is 80%-88%, and the rate of recovery is merely 72%-88%, therefore can not utilize this graphite ore resource fully, rationally, economically.
At present, this type graphite is reclaimed with conventional floatation process in a lot of ore dressing plants, but because mineral processing index is lower, and beneficiation cost is higher, causes enterprise to face the severe situation of loss.
Document " thin scale low-carbon-content graphite Research on Flotation " discloses the technical process that thin scale low-carbon-content graphite is roughly selected condition test and selected condition test successively; And confirm to roughly select mog and be-0.074mm content 89.12%; Selected grinding rate again-0.045mm content 67.28%; Because the fineness of ore grinding and the degree that relation with contents is fully dissociated to the graphite monomer, and then determined the content and the rate of recovery of the fixed carbon of flotation concentrate, though in the above-mentioned document disclosed mog reached respectively-0.074mm and-0.045mm; But content is low excessively, finally can cause the content of the fixed carbon of final concentrate to cross low not high with the rate of recovery; And the graphite raw ore of handling in the document is thin scale low-carbon-content graphite; Do not have relatively poor aphanitic graphite of floatability and clay class gangue mineral in this type ore, carry out five times traditional six selected technical process of regrinding and to obtain the higher graphite concentrate of fixed carbon content.
Document " area, Guangyuan contain cryptocrystal blame select graphite beneficiation test research " discloses the ore-dressing technique of aphanitic graphite; But just key factor of decision aphanitic graphite flotation concentrate fixed carbon content and the rate of recovery " the repeatedly fineness of ore grinding and content and the floatation concentration when repeatedly selected and the rule of floatation concentration " does not provide in above-mentioned document; Cause final concentrate grade to be merely 83.80%; Cause waste to a great extent; Therefore how to maximally utilise thin scale-aphanitic graphite ore resources, improving graphite concentrate fixed carbon content is the major issue that needs to be resolved hurrily.
Summary of the invention
The technical problem that the present invention will solve is: be directed to the deficiency of prior art, provide a kind of fixed carbon content that can effectively improve the graphite concentrate and the rate of recovery to make that thin scale-cryptocrystalline mixed type graphite ore obtains efficiently, thin scale-cryptocrystalline mixed type graphite mineral processing economic, that rationally utilize.
In order to reach the foregoing invention purpose, the technical scheme that the present invention adopts is: a kind of thin scale-cryptocrystalline mixed type graphite mineral processing is provided, it is characterized in that, may further comprise the steps:
A, with thin scale-cryptocrystalline mixed type graphite crushing raw ore to-3mm, carry out ore grinding again, ore milling concentration is 65%, the ore grinding time is 4-7min, mog for-0.074mm content is 90-95%; In levigate thin scale-cryptocrystalline mixed type graphite raw ore, add collecting agent kerosene, foaming agent terpenic oil and adjustment agent calcium oxide and stir, roughly select, floatation concentration is 20%, and flotation time is 5min, makes rough concentrate and mine tailing a; Roughly selecting reagent combination is to add kerosene 550-900g, terpenic oil 70-140g and calcium oxide 1000-1200g in levigate thin scale per ton-cryptocrystalline mixed type graphite raw ore;
B, the rough concentrate that steps A is made are once regrinded, and the concentration of once regrinding is 22-31%, and once time consuming is 6-9min again; Mog for-0.045mm content is 90-95%; Under the situation that does not add any medicament, the product of will once regrinding drops into flotation device and carries out primary cleaning then, and primary cleaning concentration is 13-18%; The primary cleaning time is 4-5min, makes primary cleaning concentrate and chats a; The primary cleaning concentrate that makes is carried out secondary regrind, the secondary concentration of regrinding is 18-23%, and secondary is consumed time and is 8-11min; Mog is 90-95% for 0.045mm content; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out recleaning, recleaning concentration is 7-14%; The recleaning time is 4-5min, makes recleaning concentrate and chats b; The recleaning reagent combination is for graphite raw ore kerosene consumption 300-360g per ton and terpenic oil consumption 35-75g; The recleaning concentrate that makes is carried out three times regrind, three times the concentration of regrinding is 14-18%, and three times are consumed time again is 10-15min; Mog for-0.045mm content is 90-95%; Under the situation that does not add any medicament, three products of regrinding are dropped into flotation device carry out triple cleaning then, triple cleaning concentration is 6-10%; The triple cleaning time is 4-5min, makes triple cleaning concentrate and chats c; The triple cleaning concentrate that makes is carried out four times regrind, four times the concentration of regrinding is 12.00-14.30%, and four times are consumed time again is 13-17min; Mog for-0.045mm content is 90-95%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out four times selected, four selected concentration are 5.0-8.7%; Four selected times are 4-5min, make four selected concentrate and chats d; Four times selected reagent combination is for graphite raw ore kerosene consumption 80-165g per ton and terpenic oil consumption 11.5-50g; Four selected concentrate that make are carried out five times regrind, five times the concentration of regrinding is 10-11.10%, and five times are consumed time again is 16-20min; Mog for-0.045mm content is 90-95%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out five times selected, five selected concentration are 4.52-7.00%; Five selected times are 4-5min, make five selected concentrate and chats e; Five times selected reagent combination is for graphite raw ore kerosene consumption 40-80g per ton and terpenic oil consumption 11.5-50g; Then under the situation that does not add any medicament, with five times that make selected concentrate drop into carry out in the flotation devices six times selected, six selected concentration are 4.10-6.00%, six selected times are 4-5min, make final graphite concentrate product and chats f;
C, in the mine tailing a that steps A makes, add collecting agent kerosene and the foaming agent terpenic oil is scanned, scanning concentration is 14-15%, and the time of scanning is 2.5-3.5min, obtains chats g and mine tailing b; Scanning reagent combination is for graphite raw ore kerosene consumption 250-360g per ton and terpenic oil consumption 70-75g;
D, the chats a that makes, chats b, chats c and chats g are merged, being concentrated into mass concentration is 25-30%, carries out ore grinding then; The chats concentration of regrinding is 25-30%, and chats is consumed time and is 8-12min, mog for-0.045mm content is 80-85%; Adding collecting agent kerosene and foaming agent terpenic oil carry out flotation in levigate merging chats; The chats floatation concentration is 11-17%, and the chats flotation time is 2.5-3.5min, makes chats h and mine tailing c; Chats floating agent prescription is for graphite raw ore kerosene consumption 300-385g per ton and terpenic oil consumption 70-100g; The chats h that makes is returned in the step of once regrinding of step B, and carry out five refining process of regrinding six times among the step B successively, make final graphite concentrate product;
E, the chats d that makes, chats e, chats f are merged; Being concentrated into mass concentration is 18-23%; The secondary that merging chats after will concentrating again returns step B is regrinded in the step, and carries out four refining process of regrinding five times among the step B successively, makes final graphite concentrate product.
In the A step, the fixed carbon content in the thin scale of raw material-cryptocrystalline mixed type graphite raw ore is 20-25%, and mainly is made up of quartz, graphite, the tremolite, chlorite, pyrite, mica group and feldspathoid.
Be to adopt jaw crusher, oppositely rolling roller crusher and/or ball mill that raw material is pulverized in the A step.
Roughly select, flotation and scan that used flotation device is a RK/FD type single-trough flotating machine in the process.
In sum, thin scale provided by the invention-cryptocrystalline mixed type graphite mineral processing compared with prior art has following beneficial effect:
1) the invention provides a kind of mineral processing circuit of handling thin scale-cryptocrystalline mixed type graphite ore; This technology in roughly selecting step, make mog reach-0.074mm content is 90-95%; In the selected step again grinding rate reach-0.045mm content is 90-95%; The graphite monomer is fully dissociated, and the monomer graphite that dissociates can reach more than 80%, has fully guaranteed the fixed carbon content and the rate of recovery of selected concentrate; This technology is repeatedly adopting the low selected concentration that reduces gradually in the refining process; The dispersiveness of ore pulp could guarantee; Thereby solve flotation froth and carry the serious problem of impurity secretly; Obtain final concentrate fixed carbon content and be 91.35%, the rate of recovery is 91.30% mineral processing index; Graphite concentrate quality National standard LZ (-) 45-90 that makes, thus the difficult problem that thin scale-cryptocrystalline mixed type graphite concentrate beneficiating technology index is low, grade is low, the rate of recovery is low, cost is high solved, make thin scale-cryptocrystalline mixed type graphite ore obtain efficiently, utilize economically and reasonably.
2) the present invention adopts dual mode to the processing of chats, and the one, chats a, chats b, chats c and these grades of chats g are lower, output is higher chats are merged the back concentrate regrinding and reconcentration, the concentrate of choosing returns the regrinding process process one time again; The 2nd, chats d, chats e, these grades of chats f are higher, output is lower chats merged directly return secondary regrinding process process after concentrating; Above-mentionedly take chats to focus on and concentrate the method for returning, reduce the amount of returning and the reentry point of chats, can make technological process simple, be easy to control and management, thereby can guarantee the stable of final concentrate technical indicator.
3) reagent combination that the present invention adopted is simple, and medicament kind is few, and consumption is few, is reaching under the situation of good sorting result, and cost reduces greatly.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Do below in conjunction with the specific embodiment specific embodiments of the invention and to describe in detail:
Embodiment 1
A, be that 20.55% thin scale-cryptocrystalline mixed type graphite raw ore adds in the jaw crusher, be crushed to-3mm, carry out ore grinding again fixed carbon content; Ore milling concentration (mass concentration; Be 65% down together), the ore grinding time is 7min, and mog is-0.074mm content (mass content; Be 90% down together), the graphite liberation degree of minerals is 75%; In levigate thin scale-cryptocrystalline mixed type graphite raw ore, add collecting agent kerosene, foaming agent terpenic oil and adjustment agent calcium oxide and stir, roughly select, floatation concentration (mass concentration, down together) is 20%, and flotation time is 5min, makes rough concentrate and mine tailing a; Roughly selecting reagent combination is to add kerosene 550g, terpenic oil 75g and calcium oxide 1000g in levigate thin scale per ton-cryptocrystalline mixed type graphite raw ore;
B, the rough concentrate that steps A is made are once regrinded, and the concentration of once regrinding is 31%, and once time consuming is 9min again; Mog for-0.045mm content is 90%, then under the situation that does not add any medicament, the product of will once regrinding drops into RK/FD type single-trough flotating machine and carries out primary cleaning; Primary cleaning concentration (mass concentration; Be 13% down together), the primary cleaning time is 5min, makes primary cleaning concentrate and chats a; The primary cleaning concentrate that makes is carried out secondary regrind, the secondary concentration of regrinding is 22.40%, and secondary is consumed time and is 11min; Mog is 93.82% for 0.045mm content; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out recleaning, recleaning concentration is 7.91%; The recleaning time is 5min, makes recleaning concentrate and chats b; The recleaning reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 360g and terpenic oil consumption 75g; The recleaning concentrate that makes is carried out three times regrinds, three concentration of regrinding be 18%, three time again time consuming be 15min; Mog for-0.045mm content is 92.06%; Under the situation that does not add any medicament, with carrying out triple cleaning in three products input RK/FD type single-trough flotating machines of regrinding, triple cleaning concentration is 6.00% then; The triple cleaning time is 5min, makes triple cleaning concentrate and chats c; The triple cleaning concentrate that makes is carried out four times regrinds, four concentration of regrinding be 14.21%, four time again time consuming be 17min; Mog for-0.045mm content is 95%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out four times selected, four times selected concentration is 5.05%; Four selected times are 5min, make four selected concentrate and chats d; Four times selected reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 165g and terpenic oil consumption 50g; Four selected concentrate that make are carried out five times regrind, five concentration of regrinding be 11.10%, five time again time consuming be 20min; Mog for-0.045mm content is 90.77%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out five times selected, five times selected concentration is 4.52%; Five selected times are 4.5min, make five selected concentrate and chats e; Five times selected reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 80g and terpenic oil consumption 50g; Then under the situation that does not add any medicament, with five times that make selected concentrate drop into carry out in the flotation devices six times selected, six selected concentration are that 4.10%, six selected time is 4.5min, make final graphite concentrate product and chats f;
C, in the mine tailing a that steps A makes, add collecting agent kerosene and the foaming agent terpenic oil is scanned, scanning concentration is 14%, and the time of scanning is 3.5min, obtains chats g and mine tailing b, and mine tailing b directly throws tail; Scanning reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 360g and terpenic oil consumption 75g;
D, the chats a that makes, chats b, chats c and chats g are merged, being concentrated into mass concentration is 25.81%, carries out ore grinding then; The chats concentration of regrinding is 29.20%, and chats is consumed time and is 12min, mog for-0.045mm content is 83.96%; Adding collecting agent kerosene and foaming agent terpenic oil carry out flotation in levigate merging chats, and the chats floatation concentration is 11.15%, and the chats flotation time is 3.5min; Make chats h and mine tailing c, mine tailing c is directly thrown tail; Chats floating agent prescription is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 385g and terpenic oil consumption 100g; The chats h that makes is returned in the step of once regrinding of step B, and carry out five refining process of regrinding six times among the step B successively, make final graphite concentrate product;
E, the chats d that makes, chats e, chats f are merged; Being concentrated into mass concentration is 22.40%; The secondary that merging chats after will concentrating again returns step B is regrinded in the step, and carries out four refining process of regrinding five times among the step B successively, makes final graphite concentrate product.
The final graphite concentrate product yield that makes is 20.49%, and fixed carbon content is 91.56%, and the rate of recovery is 91.30%.
Embodiment 2
With fixed carbon content is that 25% thin scale-cryptocrystalline mixed type graphite raw ore adds in the oppositely rolling roller crusher, is crushed to-3mm, carries out ore grinding again; Ore milling concentration is 65%; The ore grinding time is 4min, mog for-0.074mm content is 91.11%, the graphite liberation degree of minerals is 70%; In levigate thin scale-cryptocrystalline mixed type graphite raw ore, add collecting agent kerosene, foaming agent terpenic oil and adjustment agent calcium oxide and stir, roughly select, floatation concentration is 20%, and flotation time is 5min, makes rough concentrate and mine tailing a; Roughly selecting reagent combination is to add kerosene 820g, terpenic oil 130g and calcium oxide 1200g in levigate thin scale per ton-cryptocrystalline mixed type graphite raw ore;
B, the rough concentrate that steps A is made are once regrinded, and the concentration of once regrinding is 22%, and once time consuming is 6min again; Mog for-0.045mm content is 92%; Under the situation that does not add any medicament, the product of will once regrinding drops into RK/FD type single-trough flotating machine and carries out primary cleaning then, and primary cleaning concentration is 17.34%; The primary cleaning time is 4min, makes primary cleaning concentrate and chats a; The primary cleaning concentrate that makes is carried out secondary regrind, the secondary concentration of regrinding is 18.75%, and secondary is consumed time and is 8min; Mog is 94% for 0.045mm content; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out recleaning, recleaning concentration is 14%; The recleaning time is 5min, makes recleaning concentrate and chats b; The recleaning reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 300g and terpenic oil consumption 35g; The recleaning concentrate that makes is carried out three times regrinds, three concentration of regrinding be 14.85%, three time again time consuming be 10min; Mog for-0.045mm content is 91.13%; Under the situation that does not add any medicament, with carrying out triple cleaning in three products input RK/FD type single-trough flotating machines of regrinding, triple cleaning concentration is 10% then; The triple cleaning time is 4min, makes triple cleaning concentrate and chats c; The triple cleaning concentrate that makes is carried out four times regrinds, four concentration of regrinding be 12%, four time again time consuming be 13min; Mog for-0.045mm content is 94.78%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out four times selected, four times selected concentration is 8.7%; Four selected times are 4min, make four selected concentrate and chats d; Four times selected reagent combination is for every thin scale-cryptocrystalline mixed type graphite ton raw ore kerosene consumption 80g and terpenic oil consumption 11.5g; Four selected concentrate that make are carried out five times regrind, five concentration of regrinding be 10%, five time again time consuming be 16min; Mog for-0.045mm content is 92%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out five times selected, five times selected concentration is 7.00%; Five selected times are 5min, make five selected concentrate and chats e; Five times selected reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 40g and terpenic oil consumption 11.5g; Then under the situation that does not add any medicament, with five times that make selected concentrate drop into carry out in the flotation devices six times selected, six selected concentration are that 6.00%, six selected time is 5min, make final graphite concentrate product and chats f;
C, in the mine tailing a that steps A makes, add collecting agent kerosene and the foaming agent terpenic oil is scanned, scanning concentration is 15%, and the time of scanning is 2.5min, obtains chats g and mine tailing b, and mine tailing b directly throws tail; Scanning reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 250g and terpenic oil consumption 70g;
D, the chats a that makes, chats b, chats c and chats g are merged, being concentrated into mass concentration is 30%, carries out ore grinding then; The chats concentration of regrinding is 25%, and chats is consumed time and is 8min, mog for-0.045mm content is 85%; Adding collecting agent kerosene and foaming agent terpenic oil carry out flotation in levigate merging chats, and the chats floatation concentration is 17%, and the chats flotation time is 2.5min; Make chats h and mine tailing c, mine tailing c is directly thrown tail; Chats floating agent prescription is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 300g and terpenic oil consumption 70g; The chats h that makes is returned in the step of once regrinding of step B, and carry out five refining process of regrinding six times among the step B successively, make final graphite concentrate product;
E, the chats d that makes, chats e, chats f are merged; Being concentrated into mass concentration is 18%; The secondary that merging chats after will concentrating again returns step B is regrinded in the step, and carries out four refining process of regrinding five times among the step B successively, makes final graphite concentrate product.
The final graphite concentrate product yield that makes is 25.32%, and fixed carbon content is 90%, and the rate of recovery is 91.16%.
Embodiment 3
With fixed carbon content is that 20% thin scale-cryptocrystalline mixed type graphite raw ore adds in the jaw crusher, is crushed to-3mm, carries out ore grinding again; Ore milling concentration is 65%; The ore grinding time is 4min, mog for-0.074mm content is 95%, the graphite liberation degree of minerals is 68%; In levigate thin scale-cryptocrystalline mixed type graphite raw ore, add collecting agent kerosene, foaming agent terpenic oil and adjustment agent calcium oxide and stir, roughly select, floatation concentration is 20%, and flotation time is 5min, makes rough concentrate and mine tailing a; Roughly selecting reagent combination is to add kerosene 900g, terpenic oil 140g and calcium oxide 1000g in levigate thin scale per ton-cryptocrystalline mixed type graphite raw ore;
B, the rough concentrate that steps A is made are once regrinded, and the concentration of once regrinding is 30.81%, and once time consuming is 7.5min again; Mog for-0.045mm content is 92.63%; Under the situation that does not add any medicament, the product of will once regrinding drops into RK/FD type single-trough flotating machine and carries out a flotation then, and one time floatation concentration is 18%; One time flotation time is 4.5min, makes primary cleaning concentrate and chats a; The primary cleaning concentrate that makes is carried out secondary regrind, the secondary concentration of regrinding is 18%, and secondary is consumed time and is 10min; Mog is 91.85% for 0.045mm content; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out recleaning, recleaning concentration is 10%; The recleaning time is 4.5min, makes recleaning concentrate and chats b; The recleaning reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 330g and terpenic oil consumption 55g; The recleaning concentrate that makes is carried out three times regrinds, three concentration of regrinding be 14%, three time again time consuming be 12min; Mog for-0.045mm content is 94.66%; Under the situation that does not add any medicament, with carrying out triple cleaning in three products input RK/FD type single-trough flotating machines of regrinding, triple cleaning concentration is 8% then; The triple cleaning time is 4.5min, makes triple cleaning concentrate and chats c; The triple cleaning concentrate that makes is carried out four times regrinds, four concentration of regrinding be 14.30%, four time again time consuming be 15min; Mog for-0.045mm content is 94.88%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out four times selected, four times selected concentration is 7.5%; Four selected times are 4.5min, make four selected concentrate and chats d; Four times selected reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 120g and terpenic oil consumption 30g; Four selected concentrate that make are carried out five times regrind, five concentration of regrinding be 10.80%, five time again time consuming be 18min; Mog for-0.045mm content is 94.06%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out five times selected, five times selected concentration is 6.38%; Five selected times are 4.5min, make five selected concentrate and chats e; Five times selected reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 60g and terpenic oil consumption 30g; Then under the situation that does not add any medicament, with five times that make selected concentrate drop into carry out in the flotation devices six times selected, six selected concentration are that 5.00%, six selected time is 4.5min, make final graphite concentrate product and chats f;
C, in the mine tailing a that steps A makes, add collecting agent kerosene and the foaming agent terpenic oil is scanned, scanning concentration is 14.5%, and the time of scanning is 3.0min, obtains chats g and mine tailing b, and mine tailing b directly throws tail; Scanning reagent combination is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 300g and terpenic oil consumption 73g;
D, the chats a that makes, chats b, chats c and chats g are merged, being concentrated into mass concentration is 28%, carries out ore grinding then; The chats concentration of regrinding is 26%, and chats is consumed time and is 10min, mog for-0.045mm content is 83%; Adding collecting agent kerosene and foaming agent terpenic oil carry out flotation in levigate merging chats, and the chats floatation concentration is 15%, and the chats flotation time is 3.0min; Make chats h and mine tailing c, mine tailing c is directly thrown tail; Chats floating agent prescription is for thin scale per ton-cryptocrystalline mixed type graphite raw ore kerosene consumption 350g and terpenic oil consumption 75g; The chats h that makes is returned in the step of once regrinding of step B, and carry out five refining process of regrinding six times among the step B successively, make final graphite concentrate product;
E, the chats d that makes, chats e, chats f are merged; Being concentrated into mass concentration is 20%; The secondary that merging chats after will concentrating again returns step B is regrinded in the step, and carries out four refining process of regrinding five times among the step B successively, makes final graphite concentrate product.
The final graphite concentrate product yield that makes is 20.01%, and fixed carbon content is 90.22%, and the rate of recovery is 90.25%.
Though describe in detail, be not to be qualification to this patent protection domain in conjunction with the specific embodiment specific embodiments of the invention.In claims institute restricted portion, various modifications that those skilled in the art can make without creative work or adjustment still receive the protection of this patent.
Claims (4)
1. one kind thin scale-cryptocrystalline mixed type graphite mineral processing is characterized in that, may further comprise the steps:
A, with thin scale-cryptocrystalline mixed type graphite crushing raw ore to-3mm, carry out ore grinding again, ore milling concentration is 65%, the ore grinding time is 4-7min, mog for-0.074mm content is 90-95%; In levigate thin scale-cryptocrystalline mixed type graphite raw ore, add collecting agent kerosene, foaming agent terpenic oil and adjustment agent calcium oxide and stir, roughly select, floatation concentration is 20%, and flotation time is 5min, makes rough concentrate and mine tailing a; Roughly selecting reagent combination is to add kerosene 550-900g, terpenic oil 70-140g and calcium oxide 1000-1200g in levigate thin scale per ton-cryptocrystalline mixed type graphite raw ore;
B, the rough concentrate that steps A is made are once regrinded, and the concentration of once regrinding is 22-31%, and once time consuming is 6-9min again; Mog for-0.045mm content is 90-95%; Under the situation that does not add any medicament, the product of will once regrinding drops into flotation device and carries out primary cleaning then, and primary cleaning concentration is 13-18%; The primary cleaning time is 4-5min, makes primary cleaning concentrate and chats a; The primary cleaning concentrate that makes is carried out secondary regrind, the secondary concentration of regrinding is 18-23%, and secondary is consumed time and is 8-11min; Mog is 90-95% for 0.045mm content; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out recleaning, recleaning concentration is 7-14%; The recleaning time is 4-5min, makes recleaning concentrate and chats b; The recleaning reagent combination is for graphite raw ore kerosene consumption 300-360g per ton and terpenic oil consumption 35-75g; The recleaning concentrate that makes is carried out three times regrind, three times the concentration of regrinding is 14-18%, and three times are consumed time again is 10-15min; Mog for-0.045mm content is 90-95%; Under the situation that does not add any medicament, three products of regrinding are dropped into flotation device carry out triple cleaning then, triple cleaning concentration is 6-10%; The triple cleaning time is 4-5min, makes triple cleaning concentrate and chats c; The triple cleaning concentrate that makes is carried out four times regrind, four times the concentration of regrinding is 12.00-14.30%, and four times are consumed time again is 13-17min; Mog for-0.045mm content is 90-95%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out four times selected, four selected concentration are 5.0-8.7%; Four selected times are 4-5min, make four selected concentrate and chats d; Four times selected reagent combination is for graphite raw ore kerosene consumption 80-165g per ton and terpenic oil consumption 11.5-50g; Four selected concentrate that make are carried out five times regrind, five times the concentration of regrinding is 10-11.10%, and five times are consumed time again is 16-20min; Mog for-0.045mm content is 90-95%; Add collecting agent kerosene and foaming agent terpenic oil again and stir, carry out five times selected, five selected concentration are 4.52-7.00%; Five selected times are 4-5min, make five selected concentrate and chats e; Five times selected reagent combination is for graphite raw ore kerosene consumption 40-80g per ton and terpenic oil consumption 11.5-50g; Then under the situation that does not add any medicament, with five times that make selected concentrate drop into carry out in the flotation devices six times selected, six selected concentration are 4.10-6.00%, six selected times are 4-5min, make final graphite concentrate product and chats f;
C, in the mine tailing a that steps A makes, add collecting agent kerosene and the foaming agent terpenic oil is scanned, scanning concentration is 14-15%, and the time of scanning is 2.5-3.5min, obtains chats g and mine tailing b; Scanning reagent combination is for graphite raw ore kerosene consumption 250-360g per ton and terpenic oil consumption 70-75g;
D, the chats a that makes, chats b, chats c and chats g are merged, being concentrated into mass concentration is 25-30%, carries out ore grinding then; The chats concentration of regrinding is 25-30%, and chats is consumed time and is 8-12min, mog for-0.045mm content is 80-85%; Adding collecting agent kerosene and foaming agent terpenic oil carry out flotation in levigate merging chats; The chats floatation concentration is 11-17%, and the chats flotation time is 2.5-3.5min, makes chats h and mine tailing c; Chats floating agent prescription is for graphite raw ore kerosene consumption 300-385g per ton and terpenic oil consumption 70-100g; The chats h that makes is returned in the step of once regrinding of step B, and carry out five refining process of regrinding six times among the step B successively, make final graphite concentrate product;
E, the chats d that makes, chats e, chats f are merged; Being concentrated into mass concentration is 18-23%; The secondary that merging chats after will concentrating again returns step B is regrinded in the step, and carries out four refining process of regrinding five times among the step B successively, makes final graphite concentrate product.
2. thin scale according to claim 1-cryptocrystalline mixed type graphite mineral processing; It is characterized in that: in the A step; Fixed carbon content in the thin scale of raw material-cryptocrystalline mixed type graphite raw ore is 20-25%, and mainly is made up of quartz, graphite, the tremolite, chlorite, pyrite, mica group and feldspathoid.
3. thin scale according to claim 1-cryptocrystalline mixed type graphite mineral processing is characterized in that: be to adopt jaw crusher, oppositely rolling roller crusher and/or ball mill that raw material is pulverized in the A step.
4. thin scale according to claim 1-cryptocrystalline mixed type graphite mineral processing is characterized in that: roughly select, flotation and scan that used flotation device is a RK/FD type single-trough flotating machine in the process.
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