A kind of big scale Scaly graphite mine floatation process
Technical field
The present invention relates to a kind of flotation of big scale Scaly graphite mine to select agent and floatation process soon, belongs to graphite flotation technology
Field.
Background technology
China's graphite resource is abundant, and reserves and yield all occupy first place in the world.Graphite ore can be divided into crystalloid stone by crystal habit
Ink and aphanitic graphite, and Scaly graphite is divided into as two kinds of compact crystal shape graphite and crystalline flake graphite.Compact crystal shape graphite ore
Stone content in nature is less, utilization it is few, and its grade is high, generally can directly be utilized by picking.
And crystalline flake graphite is the more Scaly graphite of beneficiation research.Crystalline flake graphite is typically due to crystallization preferably, natural floatability, because
This takes traditional floatation process to can be obtained by higher grade and the rate of recovery.But due to the size of crystalline flake graphite piece and its property
Can be in close relations, the bigger graphite quality of scale is better.Therefore it in order to improve the economic benefit of crystalline flake graphite mine, preferably develops
Using the graphite resource in China, graphite flakes must just be protected in graphite ore dressing process, and ensures grade and return
Yield.
Previous many experts and scholars have carried out some researchs from graphite ore grinding attachment and multistage grinding etc., achieve
Some achievements.But, beneficiation cost high, index unstable the problems such as low since there are device efficiencies, it is difficult to promote and apply.Document
《Protect the research of flaky graphite ore dressing》Disclose the purpose that protection flaky graphite may be implemented using barrel medium ore grinding.
Document《Graphite ore dressing and crystal protection test research》Disclose different Regrinding equipments, again grinding media and medium different ratio pair
Protect the influence of graphite crystal, it is believed that desk-top vibromill is as coarse concentrate regrinding equipment, then grinding media is that steel ball and column mixing are matched
Efficiency is regrinded than can be improved, it can be with effective protection graphite flakes.
Invention content
The present invention is existing insufficient for being protected to graphite flakes during graphite mineral processing, and it is brilliant to provide a kind of big scale
Agent and floatation process are selected in the flotation of matter graphite ore soon.
The technical solution that the present invention solves above-mentioned technical problem is as follows:
Agent is selected in a kind of big scale Scaly graphite mine flotation soon, which is characterized in that including following component:50~65wt%'s
The acetone of methyl isobutyl carbinol, the petroleum ether of 20~30wt% and 10~25wt%.
The beneficial effects of the invention are as follows:It is excellent that graphite provided by the invention selects agent that can quickly be sub-elected in neutral ore pulp soon
Matter flaky graphite mine, and the short dressing process by not regrinding can be obtained by the big scale Scaly graphite concentrate of high-grade, with
Traditional big scale Scaly graphite mine floatation process is compared, can with effective protection graphite flakes, while can also reduce collecting agent and
The consumption of foaming agent, so as to reduce production cost.
The present invention also provides a kind of big scale Scaly graphite mine floatation process, include the following steps:
1) the big scale Scaly graphite mine of raw material is crushed, ball milling, adds to put into after selecting agent soon into ore milling product and floats
It selects and carries out flotation in machine, be made rough concentrate and tailing, described to select agent soon include following component:The methyl tert-butyl of 50~65wt%
The acetone of base methanol, the petroleum ether of 20~30wt% and 10~25wt%;
2) in the rough concentrate input flotation device of gained will repeatedly select soon in step 1) it is selected, be made graphite concentrate and in
Mine merges the chats of repeatedly selected rear gained;
3) tailing obtained by step 2) is adjusted into pH value, the kerosene of emulsifier is added thereto and foaming agent terpenic oil stirs
Mix rear flotation rough concentrate and tailing, rough concentrate be made and regrinded by ball milling, regrind the kerosene that emulsifier is added in product and
The obtained primary cleaning concentrate of flotation is carried out after foaming agent terpenic oil and chats, primary cleaning concentrate are regrinded by sand milling, regrinds production
Be added again in product emulsifier kerosene and foaming agent terpenic oil after carry out flotation and be made recleaning concentrate and chats, two
Secondary selected concentrate obtains graphite concentrate and chats after merging with the chats of gained in step 2) after repeatedly sand milling and flotation, will be multiple
The chats of gained merges after selected;
4) kerosene and foaming agent terpenic oil being added in gained tailing in step 3) after emulsifier are scanned, in obtaining
Mine and tailing;
5) by step 3), 4) in gained chats merge, concentration, ball milling, thereto be added emulsifier kerosene and
It is scanned after foaming agent terpenic oil, through repeatedly regrinding, obtains graphite concentrate and tailings after flotation.
The advantageous effect of floatation process provided by the invention is:
The technique of the present invention realizes the purpose that graphite flakes are protected in ore dressing process, it is ensured that big scale crystalloid stone
The grade and the rate of recovery of black mine concentrate, while beneficiation reagent consumption can be reduced, stable technical process does not increase production cost,
The level of profitability can also be effectively improved.
Based on the above technical solution, the present invention can also be improved as follows.
Further, step 3), 4) and 5) described in emulsifier include following component:60~75wt% dodecyl sulphates
Sodium, 25~40wt% sulphation monoglycerides.
Advantageous effect using above-mentioned further technical solution is the dispersibility for improving kerosene in ore pulp, to
Graphite can be effectively ensured and select the grade and the rate of recovery of step concentrate slowly, and the consumption of floating agent can be reduced.
Further, the time that sand mill is regrinded in step 3) is no less than 20min.
Advantageous effect using above-mentioned further technical solution is to be conducive to improve selected operating efficiency, shortens selected stream
Journey, to simplify mineral processing circuit.
Description of the drawings
Fig. 1 is the process flow chart of the embodiment of the present invention;
Specific implementation mode
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1:
Agent, including following component are selected in a kind of big scale Scaly graphite mine flotation soon:The methyl isobutyl carbinol of 50wt%,
The petroleum ether of 30wt% and the acetone of 20wt%.
A kind of big scale Scaly graphite mine floatation process, includes the following steps:
Raw ore is big scale Scaly graphite mine, and fixed carbon content is 15.28%, and graphite flakes diameter is more than 0.5mm, this
Kerosene used in embodiment is the breast that is formed by the lauryl sodium sulfate of 60wt%, 40wt% sulphation monoglycerides
Made of agent emulsification.
A, it by above-mentioned crushing raw ore to -4mm, reuses ball mill and carries out ore grinding, ore milling concentration 60%, the ore grinding time is
6min, mog are that -0.15mm contents are 55%;Ore milling product puts into flotation device after adding above-mentioned graphite and selecting agent soon
Selected roughing, floatation concentration 20%, flotation time 2min that rough concentrate and tailing a is made soon;
B, primary cleaning is selected soon to rough concentrate input flotation device made from step A, selects primary cleaning a concentration of soon
12.16%, it is 2min to select the primary cleaning time soon, is made and selects primary cleaning concentrate and chats a soon;The primary essence of fast choosing that will be obtained
Concentrate selection is selected recleaning soon, selects recleaning a concentration of 8.58% soon, and it is 2min to select the recleaning time soon, is made
Final graphite concentrate and chats b;
C, to regulator calcium oxide is added in tailing a made from step A, adjustment slurry pH is 9, is added and passes through emulsifier
Kerosene stirring after emulsification, carries out roughing, floatation concentration 19.86%, and rough concentrate and tailing b is made in flotation time 4min;
Roughing reagent combination is that calcium oxide 2000g, emulsified kerosene 120g and terpenic oil are added in big scale Scaly graphite green ore per ton
60g;
D, rough concentrate made from step C is once regrinded using ball mill, once regrinds a concentration of 35.24%, then
Time consuming is 6min, and mog is that -0.15mm contents are 71.24%, and emulsification is added in primary product input flotation device of regrinding
Kerosene and terpenic oil stirring carry out primary cleaning, primary cleaning a concentration of 17.65%, and the primary cleaning time is 4min, is made one
Secondary selected concentrate and chats c, primary cleaning reagent combination be big scale Scaly graphite mine emulsified kerosene dosage 40g relatively per ton and
Terpenic oil dosage 20g;By primary cleaning concentrate obtained using sand mill carry out it is secondary regrind, it is secondary regrind it is a concentration of
16.28%, secondary to be consumed time again as 20min, mog is that -0.15mm contents are 82.81%, by secondary product of regrinding in
Emulsified kerosene and terpenic oil stirring is added in input flotation device after mine a, chats b merge, and carries out recleaning, and recleaning is a concentration of
12.32%, the recleaning time is 4min, and recleaning concentrate and chats d is made, and recleaning reagent combination is relatively per ton
Big scale Scaly graphite mine emulsified kerosene dosage 40g and terpenic oil dosage 20g;By recleaning concentrate obtained using sand milling
Machine is regrinded three times, regrinds a concentration of 14.11% three times, is consumed time again three times as 20min, and mog is that -0.15mm contains
It is 87.26% to measure, and will regrind product input flotation device addition emulsified kerosene three times and terpenic oil stirs, progress triple cleaning, three
Secondary selected a concentration of 9.32%, the triple cleaning time is 4min, and triple cleaning concentrate is made and chats e, triple cleaning medicament are matched
Side is big scale Scaly graphite mine emulsified kerosene dosage 40g and terpenic oil dosage 20g relatively per ton;By triple cleaning obtained
Concentrate using sand mill regrind for four times, regrinds a concentration of 11.32% four times, is consumed time again as 20min, mog for four times
It is 90.11% for -0.15mm contents, regrinding product input flotation device by four times is added emulsified kerosene and terpenic oil stirring, carries out
Four times selected, four times selected a concentration of 7.12%, and four selected times are 4min, is made four selected concentrate and chats f, four times
Selected reagent combination is big scale Scaly graphite mine emulsified kerosene dosage 40g and terpenic oil dosage 20g relatively per ton;It will be made
Four selected concentrate using sand mill regrind for five times, regrind a concentration of 9.86% for five times, consuming time again for five times is
20min, mog are that -0.15mm contents are 91.35%, will regrind for five times product input flotation device be added emulsified kerosene and
Terpenic oil stirs, carry out five times it is selected, five times selected a concentration of 6.11%, five selected times are 3min, and final graphite is made
Concentrate and chats g, five selected reagent combinations are big scale Scaly graphite mine emulsified kerosene dosage 40g relatively per ton and pine camphor
Oily dosage 20g, chats can again return to regrind it is selected again;
E, emulsified kerosene is added in tailing b made from step C and foaming agent terpenic oil is scanned, scanned a concentration of
15.29%, it is 2.5min to scan the time, obtains chats j and tailing c;It is big scale crystalloid stone relatively per ton to scan reagent combination
Black mine emulsified kerosene dosage 40g and terpenic oil dosage 20g;
F, chats c obtained, chats d, chats e and chats j are merged, it is 28.56% to be concentrated into mass concentration, so
It is regrinded afterwards using ball mill, ore milling concentration 29.28%, the middling ore regrinding time is 8min, then grinding rate is that -0.15mm contains
Amount is 86.82%, and emulsified kerosene is added in regrinding product and foaming agent terpenic oil carries out flotation, chats floatation concentration is
12.32%, chats flotation time is 3.5min, and chats h and tailing c is made;Chats floating agent formula is big squama relatively per ton
Piece crystalloid graphite ore emulsified kerosene dosage 40g and terpenic oil dosage 20g;By chats h return to step C obtained, and carry out successively
It regrinds five refining process five times in step C, final graphite concentrate product is made.
G, chats f obtained and chats g are merged, is concentrated into a concentration of 12.39%, then will be in the merging after concentration
Mine return to step C's regrinds in step three times, and carry out step C successively regrinds triple cleaning process three times, and final stone is made
Black concentrate.
The grade of final gained graphite concentrate is 99.91%, the rate of recovery 86.52%, graphite concentrate scale granularity is+
0.282mm contents account for 82.64%.
Embodiment 2:
Agent, including following component are selected in a kind of big scale Scaly graphite mine flotation soon:The methyl isobutyl carbinol of 65wt%,
The petroleum ether of 20wt% and the acetone of 15wt%.
The present embodiment and embodiment 1 difference lies in:1) flotation used selects agent different soon;2) kerosene used be by
Made of the emulsifier be made of the lauryl sodium sulfate of 70wt%, 30wt% sulphation monoglycerides.
The grade of the final gained graphite concentrate of the present embodiment is 99.83%, the rate of recovery 88.36%, graphite concentrate scale
Granularity is that+0.282mm contents account for 85.28%.
Embodiment 3:
Agent, including following component are selected in a kind of big scale Scaly graphite mine flotation soon:The methyl isobutyl carbinol of 50wt%,
The petroleum ether of 25wt% and the acetone of 25wt%.
The present embodiment and embodiment 1 difference lies in:1) flotation used selects agent different soon;2) kerosene used be by
Made of the emulsifier be made of the lauryl sodium sulfate of 75wt%, 25wt% sulphation monoglycerides.
The grade of the final gained graphite concentrate of the present embodiment is 99.93%, the rate of recovery 85.37%, graphite concentrate scale
Granularity is that+0.282mm contents account for 80.36%.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.