CN107537696B - A kind of Fine particle processing direct-reverse flotation purifying technique - Google Patents
A kind of Fine particle processing direct-reverse flotation purifying technique Download PDFInfo
- Publication number
- CN107537696B CN107537696B CN201710692352.1A CN201710692352A CN107537696B CN 107537696 B CN107537696 B CN 107537696B CN 201710692352 A CN201710692352 A CN 201710692352A CN 107537696 B CN107537696 B CN 107537696B
- Authority
- CN
- China
- Prior art keywords
- concentrate
- fine particle
- chats
- direct
- flotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of Fine particle processing direct-reverse flotation purifying techniques, it includes primary corase grinding rougher process, regrinds six refining process and Treatment of Middling process for five times.The present invention combines positive and negative floatation process, and reverse flotation flowsheet is used since four times selected, the fixed carbon content 90~92% of obtained final concentrate, recovery rate of concentrate 85~86%.The present invention replaces traditional direct flotation process using graphite direct-reverse flotation process, reverse floatation process is used in the rear stage of cleaning technological flowasheet, the entrainment of gangue mineral caused by meticulous grinding fineness can be effectively reduced, the entrainment of the silicate gangue minerals such as mica in concentrate, quartz can especially be effectively reduced, improve the fixed carbon content of concentrate, optimize Fine particle processing ore-dressing technique, reduces subsequent chemistry purifying technique production cost, provide a new thought for Fine particle processing purifying technique.
Description
Technical field
The invention belongs to purification by mineral technical fields, and in particular to a kind of Fine particle processing direct-reverse flotation purifying technique.
Background technique
" twentieth century is the century of silicon, and 21st century is the century of carbon ", graphite is important nonmetal mineral resource,
It can be applied to the every field of national economy, there is highly important industrial value.The function admirable of graphite, in industrial materials
In application have about 200 years history.As important economic materials, metallurgy, casting, machine-building, chemical industry, it is electrical,
The application of the traditional industries such as weaving, atomic energy department is very extensive.
Chinese graphite resource rich reserves, resource potential are huge.Crystalloid in Chinese Scaly graphite resource, more than 70%
Graphite resource is Fine particle processing, and only the Scaly graphite resource less than 30% is flaky graphite resource.With science and technology
Be constantly progressive and a large amount of consumption of flaky graphite resource, modern graphite industry have not only been satisfied with to big scale stone
The demand of ink, the development and utilization of Fine particle processing mine are increasingly taken seriously.
Graphite is the preferable nonmetallic mineral of native floatability, can remove most gangue mineral using flotation, at present
Flotation is in graphite ore dressing field using very extensive.In general, the concentrate of graphite ore dressing is required to be that it fixes carbon content
The higher the better with the rate of recovery, and for flaky graphite resource, it is also contemplated that the protection of scale.Flaky graphite processing is more
Using stage grinding-flotation process, multiple dressing process is repeatedly regrinded, improves the fixed carbon content of concentrate.Multistage grinding is to press from both sides
Gangue (such as quartz, mica, pyroxene) between graphite flakes peels off as early as possible, reduces gangue mineral pair in grinding process
The destruction of graphite flakes.Repeatedly selected is to obtain the stone of high fixed carbon content to as far as possible remove the gangue mineral dissociated
Black concentrate.Flaky graphite ore beneficiation feasibility is generally better than thin scale, and process is shorter, and the more difficult choosing of thin scale, and process is relatively
It is long.
For the crystalline flake graphite concentrate that flotation obtains, it is partially used directly for industrial production, such as magnesia carbon brick, casting sand
It is exactly directly using crystalline flake graphite concentrate as raw material, still, most of concentrate could use after being purified, and such as expand stone
Ink, lithium battery graphite cathode material etc., especially some high-end purposes, such as Nuclear grade graphite, high-end lubricating oil, ultra-thin ultrapure
Conductive heat conducting material etc., these industries require the fixed carbon of crystalline flake graphite raw material very high.The side of industrial graphite purification at present
There are mainly three types of methods: alkali acid system, acid system and high temperature method；For high temperature method due to higher cost, application at present is not very wide；Alkali acid system and
The fixed carbon content of graphite is lower than acid system using wide, but after the purification of alkali acid system for acid system, and acid system is current most widely used stone
Black purifying technique；Acid system is mainly the impurity passed through in hydrofluoric acid dissolution crystalline flake graphite concentrate, if mica too high levels in concentrate,
Because hydrofluoric acid is compared with indissoluble solution mica, refining effect will have a greatly reduced quality, and cause after purification in graphite impurity content excessively high and limit
Its application is made.
For Fine particle processing, most dressing plants still use stage grinding-stage flotation process to be produced.Traditional
Stage grinding-stage flotation process has the following problems: 1) cleaning technological flowasheet leading portion, and the intergrowth in concentrate is more, after regrinding
New explanation from intergrowth it is more, therefore selected after regrinding can improve the fixed carbon content of concentrate by a relatively large margin, and cleaning technological flowasheet
Back segment, with the raising of the fixed carbon content of concentrate, regrind rear new explanation from intergrowth tail off, therefore the fixation carbon content of concentrate mentions
The amplitude risen is smaller；2) crystalline flake graphite thinner for disseminated grain size, the back segment of cleaning technological flowasheet, meticulous grinding fineness lead to arteries and veins
Stone entrainment is serious, and the fixed carbon content of concentrate is difficult to improve；3) when direct flotation crystalline flake graphite, mica can be carried secretly with foam enters essence
Mine is unfavorable for the deep processing and utilization of crystalline flake graphite concentrate.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of Fine particle processing direct-reverse flotation purification, mention in conjunction with positive and negative flotation
Technique out uses reverse flotation in the back segment of cleaning technological flowasheet, the entrainment of gangue mineral caused by reducing because of meticulous grinding fineness, especially
Its entrainment that can effectively reduce the silicate gangue minerals such as mica in concentrate, quartz improves the fixed carbon content of concentrate, optimizes thin squama
Piece graphite mineral processing reduces subsequent chemistry purifying technique production cost.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of Fine particle processing direct-reverse flotation purifying technique, it the following steps are included:
1) low-grade Fine particle processing raw ore is crushed, roughly ground, roughing inhibitor, direct flotation collecting is then added
Agent, foaming agent carry out roughing, obtain rough concentrate and tailing a；
2) direct floatation process: rough concentrate obtained by step 1) is once regrinded, and it is floating that gained is once regrinded to product investment
Machine is selected, direct flotation collecting agent is added and foaming agent carries out primary cleaning, obtains primary cleaning concentrate and chats b；Gained is successively smart
Concentrate selection progress is secondary to regrind, and products therefrom is put into flotation device, and direct flotation collecting agent is added and foaming agent carries out recleaning,
Obtain secondary concentrate and chats c；Recleaning concentrate is regrinded three times, products therefrom is put into flotation device, and is added and is top-uped
It selects collecting agent and foaming agent to carry out triple cleaning, obtains triple cleaning concentrate and chats d；
3) reverse floatation process: by gained, concentrate regrind for four times three times, and products therefrom is put into flotation device, is added anti-floating
Select inhibitor and collecting agent in reverse floatation carry out four times it is selected, obtain four selected concentrate and froth pulp chats e；By four essences of gained
Concentrate selection regrind for five times, and products therefrom is rubbed in flotation device, and reverse flotation inhibitor is added and collecting agent in reverse floatation carries out five
It is secondary selected, obtain five selected concentrate and froth pulp chats f；By in gained five times selected concentrate investment flotation devices, it is added anti-floating
Select inhibitor and collecting agent in reverse floatation carry out six times it is selected, obtain graphite concentrate product and chats g；
4) direct flotation collecting agent will be added in tailing a obtained by step 1) and foaming agent carries out once purging selection, obtain chats a and tail
Mine b；
5) gained chats a, chats b, chats c are merged, regrind for six times, direct flotation is added in products therefrom and catches
Receive agent and foaming agent carry out it is secondary scan, obtain chats h and tailing c；By gained chats h return step 1) in the roughing step,
And successively carry out step 1) in roughing, step 2) described three regrind, three selected direct floatation process, step 3) described two
It is a regrind, three selected reverse floatation process, obtain graphite concentrate product；The chats d and chats a of this step, chats b, chats c are closed
And or merge with chats e described in step 6)；
6) by gained chats e return step 2) it is described once regrind in step, and successively carry out described three of step 2) again
Mill, three selected direct floatation process, step 3) be described two to regrind, three selected reverse floatation process, obtains the production of graphite concentrate
Product；
7) by gained chats f return step 2) it is described it is secondary regrind in step, and successively carry out step 2) subsequent two
Regrind, two selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite concentrate
Product；
8) by gained chats g return step 2) it is described regrinded in step three times, and successively carry out step 2) subsequent one
Regrind, a selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite concentrate
Product.
In above scheme, the roughing inhibitor is quick lime.
In above scheme, the direct flotation collecting agent is kerosene；Foaming agent is 2# oil.
In above scheme, the collecting agent in reverse floatation presses (14~16) by lauryl amine and coco amine: 5 mass ratio mix and
At；Present invention combination reverse floatation process, by the lauryl amine that gangue mineral collecting is had excellent performance and to graphite collecting performance compared with
The coco amine of difference is mixed, and is used cooperatively with reverse flotation inhibitor MF, and the separation of graphite and gangue mineral can be effectively facilitated,
Reduce the content of the constituent phases such as mica in gained concentrate.
In above scheme, the reverse flotation inhibitor is MF (polymethylene naphthalene disulfonate).
In above scheme, the reagent combination of the use of roughing technique described in step 1) are as follows: low-grade Fine particle processing per ton
2300~2500g of roughing inhibitor, 300~350g of direct flotation collecting agent, 140~160g of foaming agent are added in raw ore.
In above scheme, the ore milling concentration of rough grinding process described in step 1) is 63-67%, and grinding fineness is -0.074mm
Content is 90~95%.
In above scheme, the roughing concentration of the roughing technique is 20~25%, and the roughing flotation time is 5~7min.
In above scheme, crushing process described in step 1) is to be crushed to -2mm.
In above scheme, the concentration of regrinding once regrinded is 20~25%, and grinding fineness is that -0.045mm content is
80~85%；The secondary concentration of regrinding regrinded is 15~20%, and grinding fineness is that -0.045mm content is 90~95%；Three times again
Mill and the concentration of regrinding regrinded for four times are 10~15%, and grinding fineness is that -0.045mm content is 94~97%；It regrinds for five times
Regrinding concentration is 5~10%, and grinding fineness is that -0.045mm content is 92~97%.
In above scheme, the primary cleaning concentration is 10~13%, and the primary cleaning time is 5~6min；Recleaning
Concentration is 6~8%, and the recleaning time is 4~5min；Triple cleaning concentration be 4~6%, the triple cleaning time be 4~
5min；Four selected concentration are 3~5%, four selected 4~5min of time；Five selected concentration are 2~4%, five times it is selected when
Between 3~4min；Six selected concentration are 2~3%, six selected 2~3min of time.
In above scheme, the reagent combination that is used in the primary cleaning and recleaning step are as follows: per ton low-grade thin
The dosage of crystalline flake graphite raw ore direct flotation collecting agent is 130~140g, and the dosage of foaming agent is 60~80g；Triple cleaning step
The reagent combination of middle use are as follows: the dosage of low-grade Fine particle processing raw ore direct flotation collecting agent per ton is 80~100g, blistering
The dosage of agent is 30~50g.
In above scheme, the reagent combination that is used in four concentration steps are as follows: low-grade Fine particle processing per ton is former
The dosage of reverse flotation inhibitor is 2000~2200g in mine, and the dosage of collecting agent in reverse floatation is 200~300g；Five essences
Select the reagent combination used in step are as follows: the dosage of low-grade Fine particle processing raw ore reverse flotation inhibitor per ton be 1400~
1600g, the dosage of collecting agent in reverse floatation are 200~300g；The reagent combination used in six concentration steps are as follows: per ton low
The dosage of MF is 400~600g in grade Fine particle processing raw ore, and the dosage of collecting agent in reverse floatation is 100~200g.
In above scheme, the once purging selection concentration is 13~15%, and scanning the time is 3~4min.
In above scheme, the secondary concentration of scanning is 10~12%, and scanning the time is 4~5min.
In above scheme, the once purging selection and the secondary reagent combination for scanning use are as follows: low-grade thin scale stone per ton
Direct flotation collector dosage is 130~140g in black raw ore, and frother dosages are 60~80g.
In above scheme, regrinding concentration for described six times is 20~25%, grinding fineness be -0.045mm content be 90~
95%.
In above scheme, fixed in the Fine particle processing raw ore carbon content be 10~15%, mainly by graphite, quartz,
Pyrite, mica group and feldspathoid composition.
In above scheme, using jaw crusher or oppositely rolling roller crusher to low-grade Fine particle processing in the step A
Raw ore is crushed.
In above scheme, process is roughly ground and regrinded using conical ball mill.
In above scheme, the roughing, flotation is selected and scans flotation device used in process as RK/FD type single-trough flotating machine.
In above scheme, the ore milling concentration, floatation concentration (roughing or selected) and scan concentration be ore pulp in solid (mine
Object) and liquid (water) mass ratio, it is indicated with percent solids；The concentration of regrinding is the corresponding ore grinding for regrinding step
Concentration.
Compared with prior art, the invention has the benefit that
1) present invention combines positive and negative floatation process, using reverse floatation process instead of traditional in rear stage refining process
Direct floatation process can reduce the problem of leading to the entrainment of gangue mineral because of meticulous grinding fineness, optimize Fine particle processing dresser
Skill improves the fixed carbon content of concentrate, provides a new thought for Fine particle processing purifying technique.
2) process flow of the invention is used, it can be by the low-grade Fine particle processing of the fixed carbon content 10~15% of raw ore
Mine purification, obtains the graphite concentrate of fixed carbon content 90~92%, and graphite recovery rate of concentrate can achieve 85~86%.
3) present invention uses MF for inhibitor, inhibits to graphite, hydrophobic graphite surface is made to become hydrophilic；MF's
Main function group is nonpolar naphthalene nucleus, is adsorbed in graphite by Van der Waals force and mica surface forms physical absorption, and utilize
Collecting agent mixed amine is mingled with the adsorbance gap of substance in graphite surface and mica, quartz surfaces etc., realizes graphite and gangue mine
The separation of object, the content of the constituent phases such as mica effectively in control gained concentrate；Compared with traditional flotation flowsheet, present invention gained essence
The fixation carbon content of mine is improved；And reverse flotation can preferably control the content of mica in concentrate, be more advantageous to crystalline flake graphite
The deep processing and utilization of concentrate.
Detailed description of the invention
Fig. 1 is Fine particle processing direct-reverse flotation purifying technique flow chart of the present invention；
Fig. 2 is 2 process flow chart of embodiment of the present invention；
Fig. 3 is tradition Fine particle processing direct flotation purifying technique flow chart described in comparative example；
Fig. 4 is the XRD of embodiment 2 and graphite concentrate product obtained by tradition direct flotation process described in comparative example of the present invention
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.
In following embodiment, carbon content is fixed in the low-grade Fine particle processing raw ore that uses for 12.69%, mainly by stone
Ink, quartz, pyrite, mica group and feldspathoid composition.
In following embodiment, the collecting agent in reverse floatation of use is mixed by lauryl amine and coco amine by the mass ratio of 3:1
(mixed amine).
Embodiment 1
A kind of Fine particle processing direct-reverse flotation purifying technique, process flow chart are shown in Fig. 1, comprising the following steps:
1) it by after low-grade Fine particle processing crushing raw ore to -2mm, is roughly ground, ore milling concentration 65%, grinding fineness
It is 92.17% for -0.074mm content；It is raw that roughing inhibitor is added into low-grade Fine particle processing raw ore of the gained after levigate
Roughing is carried out after lime, direct flotation collecting agent kerosene and the stirring sufficiently of foaming agent 2# oil, roughing concentration is 25%, when roughing flotation
Between be 7min, rough concentrate and tailing a is made；Wherein, roughing reagent combination is to be added in low-grade Fine particle processing raw ore per ton
Quick lime 2400g, kerosene 308g and 2# oil 148g；
2) rough concentrate obtained by step 1) is once regrinded, regrinding concentration is 24.78%, and grinding fineness is -0.045mm
Content is 81.15%, will once regrind product investment flotation device, is carried out after direct flotation collecting agent kerosene and foaming agent 2# oil is added
Primary cleaning, primary cleaning concentration are 10.86%, and the primary cleaning time is 6min, and primary cleaning concentrate and chats b is made；One
Secondary selected reagent combination is that the dosage of low-grade Fine particle processing raw ore kerosene per ton is 132g, and the dosage of 2# oil is 74g；It will system
The primary cleaning concentrate progress obtained is secondary to regrind, and regrinding concentration is 16.31%, and grinding fineness is that -0.045mm content is
94.69%, product investment flotation device is regrinded by secondary, direct flotation collecting agent kerosene and the stirring of foaming agent 2# oil is added, carries out
Recleaning, recleaning concentration are 6.10%, and the recleaning time is 5min, and recleaning concentrate and chats c is made；Its
In, recleaning reagent combination is that low-grade Fine particle processing raw ore kerosene consumption per ton is 132g, and the dosage of 2# oil is 74g；
Recleaning concentrate obtained is regrinded three times, regrinding concentration is 12.36%, and grinding fineness is that -0.045mm content is
96.31%, product investment flotation device will be regrinded three times, carry out essence three times after direct flotation collecting agent kerosene and foaming agent 2# oil is added
Choosing, triple cleaning concentration are 4.29%, and the triple cleaning time is 5min, and triple cleaning concentrate and chats d is made；Triple cleaning medicine
Agent prescription is that the dosage of low-grade Fine particle processing raw ore kerosene per ton is 88g, and the dosage of 2# oil is 37g；
3) triple cleaning concentrate obtained regrind for four times, regrinding concentration is 10.38%, grinding fineness is-
0.045mm content is 96.05%, regrinds product investment flotation device for four times, reverse flotation inhibitor MF and reverse flotation collecting is added
Carried out after agent mixed amine four times it is selected, four selected concentration are 3.45%, four selected time 4min, and four selected concentrate are made
With froth pulp chats e；The use that four selected reagent combinations are low-grade Fine particle processing raw ore reverse flotation inhibitor MF per ton
Amount is 2000g, and the dosage of collecting agent in reverse floatation mixed amine is 240g；Four times obtained selected concentrate regrind for five times, then
Grinding concentration is 9.35%, and grinding fineness is that -0.045mm content is 95.29%, regrinds product investment flotation device for five times, is added
Carried out after reverse flotation inhibitor MF and collecting agent in reverse floatation mixed amine five times it is selected, five selected concentration are 2.90%, five essences
Time 3min is selected, five selected concentrate and froth pulp chats f is made；Five selected reagent combinations are low-grade thin scale per ton
The dosage of graphite raw ore inhibitor MF is 1500g, and the dosage of collecting agent in reverse floatation mixed amine is 200g；It is selected by five times obtained
Concentrate puts into flotation device, be added after reverse flotation inhibitor MF and collecting agent in reverse floatation mixed amine carry out six times it is selected, six times are selected
Concentration is 2.44%, and final graphite concentrate product and chats g is made in six selected time 3min；Six times selected reagent combination is
The dosage of low-grade Fine particle processing raw ore reverse flotation inhibitor MF per ton is 500g, and the dosage of collecting agent in reverse floatation mixed amine is
100g；
4) addition direct flotation collecting agent kerosene and foaming agent 2# oil progress once purging selection into tailing a obtained by step 1), one
Secondary concentration of scanning is 14.33%, and scanning the time is 4min, obtains chats a and tailing b；It is per ton low-grade for scanning reagent combination
Fine particle processing raw ore kerosene consumption is 132g, and 2# oil dosage is 74g；
5) chats a obtained, chats b, chats c and chats d are merged, regrind for six times, regrind concentration six times
It is 21.62%, it is 91.38% that grinding fineness, which is -0.045mm content, regrinds addition direct flotation collecting agent in products therefrom six times
Kerosene and foaming agent 2# oil carry out it is secondary scan, secondary concentration of scanning is 10.39%, and scanning the time is 4min, be made chats h and
Tailing c；It is wherein, secondary that scan reagent combination be low-grade Fine particle processing raw ore kerosene consumption per ton is 132g, 2# oil dosage
For 74g；By gained chats h return step 1) in the roughing step, and it is described successively to carry out the roughing in step 1), step 2)
Three regrind, three selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite
Concentrate product；
6) by gained chats e return step 2) it is described once regrind in step, and successively carry out described three of step 2) again
Mill, three selected direct floatation process, step 3) be described two to regrind, three selected reverse floatation process, obtains the production of graphite concentrate
Product；
7) the secondary of chats f return step B obtained is regrinded in step, and successively carry out step B in three regrind,
Final graphite concentrate product is made in five refining process；
8) by gained chats g return step 2) it is described regrinded in step three times, and successively carry out step 2) subsequent one
Regrind, a selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite concentrate
Product.
The purification index of the present embodiment products obtained therefrom is shown in Table 1.
1 embodiment of table, 1 gained refined product index
| Product | Yield/% | Fixed carbon content/% | The rate of recovery/% |
| Graphite concentrate product | 11.05 | 91.81 | 85.69 |
| Tailing b | 50.13 | 0.84 | 3.56 |
| Tailing c | 38.82 | 3.28 | 10.75 |
| It is total | 100 | 11.84 | 100 |
Embodiment 2
A kind of Fine particle processing direct-reverse flotation purifying technique, process flow chart are shown in Fig. 2, comprising the following steps:
1) it by after low-grade Fine particle processing crushing raw ore to -2mm, is roughly ground, ore milling concentration 65%, grinding fineness
It is 90.25% for -0.074mm content；It is raw that roughing inhibitor is added into low-grade Fine particle processing raw ore of the gained after levigate
Roughing is carried out after lime, direct flotation collecting agent kerosene and the stirring sufficiently of foaming agent 2# oil, roughing concentration is 25%, when roughing flotation
Between be 7min, rough concentrate and tailing a is made；Wherein, roughing reagent combination is to be added in low-grade Fine particle processing raw ore per ton
Quick lime 2400g, kerosene 320g and 2# oil 148g；
2) rough concentrate obtained by step 1) is once regrinded, regrinding concentration is 24.28%, and grinding fineness is -0.045mm
Content is 82.37%, will once regrind product investment flotation device, is carried out after direct flotation collecting agent kerosene and foaming agent 2# oil is added
Primary cleaning, primary cleaning concentration are 12.23%, and the primary cleaning time is 6min, and primary cleaning concentrate and chats b is made；One
Secondary selected reagent combination is that the dosage of low-grade Fine particle processing raw ore kerosene per ton is 140g, and the dosage of 2# oil is 70g；It will system
The primary cleaning concentrate progress obtained is secondary to regrind, and regrinding concentration is 15.88%, and grinding fineness is that -0.045mm content is
92.03%, product investment flotation device is regrinded by secondary, direct flotation collecting agent kerosene and the stirring of foaming agent 2# oil is added, carries out
Recleaning, recleaning concentration are 6.55%, and the recleaning time is 5min, and recleaning concentrate and chats c is made；Its
In, recleaning reagent combination is that low-grade Fine particle processing raw ore kerosene consumption per ton is 140g, and the dosage of 2# oil is 70g；
Recleaning concentrate obtained is regrinded three times, regrinding concentration is 14.39%, and grinding fineness is that -0.045mm content is
94.27%, product investment flotation device will be regrinded three times, carry out essence three times after direct flotation collecting agent kerosene and foaming agent 2# oil is added
Choosing, triple cleaning concentration are 4.36%, and the triple cleaning time is 5min, and triple cleaning concentrate and chats d is made；Triple cleaning medicine
Agent prescription is that the dosage of low-grade Fine particle processing raw ore kerosene per ton is 90g, and the dosage of 2# oil is 35g；
3) triple cleaning concentrate obtained regrind for four times, regrinding concentration is 12.01%, grinding fineness is-
0.045mm content is 94.19%, regrinds product investment flotation device for four times, reverse flotation inhibitor MF and reverse flotation collecting is added
Carried out after agent mixed amine four times it is selected, four selected concentration are 3.44%, four selected time 5min, and four selected concentrate are made
With froth pulp chats e；Four selected reagent combinations are that the dosage of low-grade Fine particle processing raw ore MF per ton is 2100g, are mixed
The dosage for closing amine is 250g；Four times obtained selected concentrate regrind for five times, regrinding concentration is 9.98%, grinding fineness
It is 92.99% for -0.045mm content, regrinds product investment flotation device for five times, reverse flotation inhibitor MF is added and reverse flotation is caught
Receive carries out after agent mixed amine five times it is selected, five selected concentration are 2.98%, five selected time 4min, obtained five selected essences
Mine and froth pulp chats f；Five selected reagent combinations are that the dosage of low-grade Fine particle processing raw ore MF per ton is 1600g,
The dosage of mixed amine is 250g；Five times obtained selected concentrate are put into flotation device, inhibitor MF and collecting agent mixed amine is added
Carry out afterwards six times it is selected, six selected concentration are 2.66%, six selected time 3min, be made final graphite concentrate product and in
Mine g；Six selected reagent combinations are that the dosage of low-grade Fine particle processing raw ore MF per ton is 400g, and the dosage of mixed amine is
100g；
4) direct flotation collecting agent kerosene and foaming agent 2# oil will be added in step 1) the tailing a and carry out once purging selection, one
Secondary concentration of scanning is 13.16%, and scanning the time is 4min, obtains chats a and tailing b；It is per ton low-grade for scanning reagent combination
Fine particle processing raw ore kerosene consumption is 140g, and 2# oil dosage is 70g；
5) chats a obtained, chats b and chats c are merged, regrind for six times, regrinding concentration six times is
22.46%, it is 90.53% that grinding fineness, which is -0.045mm content, regrinds products therefrom and direct flotation collecting agent kerosene is added for six times
With foaming agent 2# oil carry out it is secondary scan, secondary concentration of scanning is 10.57%, and scanning the time is 4min, and chats h and tailing is made
c；Wherein, secondary to scan reagent combination be low-grade Fine particle processing raw ore kerosene consumption per ton is 140g, and 2# oil dosage is
70g；By gained chats h return step 1) in the roughing step, and successively carry out the roughing in step 1), step 2) described three
It is a regrind, three selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite essence
Mineral products；
6) by gained chats d and e return step 2) it is described once regrind in step, and successively carry out step 2) described three
Regrind, three selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite concentrate
Product；
7) the secondary of chats f return step B obtained is regrinded in step, and successively carry out step B in three regrind,
Final graphite concentrate product is made in five refining process；
8) by gained chats g return step 2) it is described regrinded in step three times, and successively carry out step 2) subsequent one
Regrind, a selected direct floatation process, step 3) it is described two regrind, three selected reverse floatation process, obtain graphite concentrate
Product.
The purification index of the present embodiment products obtained therefrom is shown in Table 2.
2 embodiment of table, 2 gained refined product index
| Product | Yield/% | Fixed carbon content/% | The rate of recovery/% |
| Graphite concentrate product | 9.62 | 90.08 | 85.02 |
| Tailing b | 46.27 | 1.04 | 4.72 |
| Tailing c | 44.11 | 2.37 | 10.26 |
| It is total | 100 | 10.19 | 100 |
Comparative example
A kind of traditional direct flotation purifying technique of Fine particle processing, process flow chart are shown in Fig. 3, wherein including primary thick
Mill rougher process regrinds seven refining process and Treatment of Middling process for six times；The corase grinding roughing wherein used, one, two, three, four
Secondary to regrind, one, two, three is selected, and first and second to scan condition same as Example 1；Four, five, six dressing process, which use, top-ups
Choosing, agentia condition are identical as the triple cleaning condition of embodiment 1；Seven times selected not to add medicament.Chats a~d is carried out after merging
Regrind for seven times it is secondary scan process, chats e, f, g, h are back to one, two, three, four time respectively and regrind, and chats i is back to roughing.
The fixed carbon content of the final concentrate that the technique obtains is 89.22%, the fixed carbon of obtained graphite concentrate slightly below of the invention
Content.
Fig. 4 is 1 gained graphite concentrate product of embodiment (n- anti-floating process) and comparative example (direct flotation process) described tradition
The XRD spectrum of graphite concentrate product obtained by direct floatation process, as can be seen from Figure, using graphite obtained by traditional direct floatation process
Main gangue mineral is mica in concentrate, and the content of mica is far less than traditional direct flotation stream in present invention gained graphite concentrate
Journey illustrates that n- anti-floating technique greatly reduces the entrainment of mica in concentrate.Mica is arteries and veins generally existing in crystalline flake graphite concentrate
Stone ore object, while being also that maximum gangue mineral is endangered to crystalline flake graphite deep processing.When direct flotation crystalline flake graphite, mica can be with
Foam entrainment enters concentrate.
The above results show that the fixation phosphorus content of gained graphite concentrate product of the invention and the rate of recovery are high；Furthermore of the invention
Traditional direct flotation process is replaced using graphite direct-reverse flotation process, uses reverse flotation in the rear stage of cleaning technological flowasheet, it can be effective
The entrainment for reducing the silicate gangue minerals such as mica, quartz in gained graphite concentrate, optimizes Fine particle processing ore-dressing technique, reduces
Subsequent chemistry purifying technique production cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Fine particle processing direct-reverse flotation purifying technique, it the following steps are included:
1) low-grade Fine particle processing raw ore is crushed, roughly ground, roughing inhibitor is then added, direct flotation collecting agent, rises
Infusion carries out roughing, obtains rough concentrate and tailing a；
2) direct floatation process: rough concentrate obtained by step 1) is once regrinded, primary cleaning, obtains primary cleaning concentrate and chats
b；By gained primary cleaning concentrate carry out it is secondary regrind, recleaning, obtain secondary concentrate and chats c；By recleaning concentrate into
Row regrind three times, triple cleaning, obtain triple cleaning concentrate and chats d；The primary cleaning, recleaning, triple cleaning technique
The floating agent of middle use is positive flotation collector and foaming agent；
3) reverse floatation process: by gained, concentrate regrind for four times three times, and reverse flotation inhibitor and reverse flotation collecting is then added
Agent progress four times selected, obtains four selected concentrate and froth pulp chats e；Gained four times selected concentrate regrind for five times,
Reverse flotation inhibitor is added and collecting agent in reverse floatation progress five times selected, obtains five selected concentrate and froth pulp chats f；To institute
Be added reverse flotation inhibitor in five selected concentrate and collecting agent in reverse floatation carry out six times it is selected, obtain graphite concentrate product and in
Mine g；The reverse flotation inhibitor is MF；
4) direct flotation collecting agent will be added in tailing a obtained by step 1) and foaming agent carries out once purging selection, obtain chats a and tailing b；
5) gained chats a, chats b, chats c are merged, regrind for six times, direct flotation collecting agent is added in products therefrom
With foaming agent carry out it is secondary scan, obtain chats h and tailing c；By gained chats h return step 1) in the roughing step, and according to
It is secondary carry out step 1), 2), 3) in subsequent step, obtain graphite concentrate product；Chats a, the chats b, chats of chats d and this step
C merges or merges with chats e described in step 6)；
6) by gained chats e return step 2) it is described once regrind in step, and successively carry out step 2), 3) in subsequent step
Suddenly, graphite concentrate product is obtained；
7) by gained chats f return step 2) it is described it is secondary regrind in step, and successively carry out step 2), 3) in subsequent step
Suddenly, graphite concentrate product is obtained；
8) by gained chats g return step 2) it is described regrinded in step three times, and successively carry out step 2), 3) in subsequent step
Suddenly, graphite concentrate product is obtained.
2. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that the direct flotation is caught
Receipts agent is kerosene；Foaming agent is 2# oil.
3. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that the reverse flotation is caught
Receive agent and press (14~16) by lauryl amine and coco amine: 5 mass ratio mixes.
4. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that described in step 1)
Roughing technique use reagent combination are as follows: in low-grade Fine particle processing raw ore per ton be added 2300~2500g of roughing inhibitor,
300~350g of direct flotation collecting agent, 140~160g of foaming agent.
5. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that described once to regrind
Regrind concentration be 20~25%, grinding fineness is that -0.045mm content is 80~85%；The secondary concentration of regrinding regrinded is 15
~20%, grinding fineness is that -0.045mm content is 90~95%；Regrind three times with regrind for four times regrind concentration be 10~
15%, grinding fineness is that -0.045mm content is 94~97%；The concentration of regrinding regrinded for five times is 5~10%, grinding fineness is-
0.045mm content is 92~97%；Regrinding concentration for described six times is 20~25%, grinding fineness be -0.045mm content be 90~
95%.
6. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that the primary cleaning
Concentration is 10~13%, and the primary cleaning time is 5~6min；Recleaning concentration be 6~8%, the recleaning time be 4~
5min；Triple cleaning concentration is 4~6%, and the triple cleaning time is 4~5min；Four selected concentration are 3~5%, and four times selected
4~5min of time；Five selected concentration are 2~4%, five selected 3~4min of time；Six selected concentration are 2~3%, six
Secondary selected 2~3min of time.
7. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that the primary cleaning
With the reagent combination used in recleaning step are as follows: the dosage of low-grade Fine particle processing raw ore direct flotation collecting agent per ton is
130~140g, the dosage of foaming agent are 60~80g；The reagent combination used in triple cleaning step are as follows: low-grade thin squama per ton
The dosage of piece graphite raw ore direct flotation collecting agent is 80~100g, and the dosage of foaming agent is 30~50g.
8. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that described four times selected
The reagent combination used in step are as follows: in low-grade Fine particle processing raw ore per ton the dosage of reverse flotation inhibitor be 2000~
2200g, the dosage of collecting agent in reverse floatation are 200~300g；The reagent combination used in five concentration steps are as follows: per ton low
The dosage of grade Fine particle processing raw ore reverse flotation inhibitor is 1400~1600g, the dosage of collecting agent in reverse floatation is 200~
300g；The reagent combination used in six concentration steps are as follows: the dosage of MF is in low-grade Fine particle processing raw ore per ton
400~600g, the dosage of collecting agent in reverse floatation are 100~200g.
9. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that the once purging selection
Concentration is 13~15%, and scanning the time is 3~4min；It is described it is secondary scan concentration be 10~12%, scan the time be 4~
5min；The once purging selection and the secondary reagent combination for scanning use are as follows: direct flotation in low-grade Fine particle processing raw ore per ton
Collector dosage is 130~140g, and frother dosages are 60~80g.
10. Fine particle processing direct-reverse flotation purifying technique according to claim 1, which is characterized in that the thin scale stone
It is 10~15% that carbon content is fixed in black raw ore, is mainly made of graphite, quartz, pyrite, mica group and feldspathoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710692352.1A CN107537696B (en) | 2017-08-14 | 2017-08-14 | A kind of Fine particle processing direct-reverse flotation purifying technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710692352.1A CN107537696B (en) | 2017-08-14 | 2017-08-14 | A kind of Fine particle processing direct-reverse flotation purifying technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107537696A CN107537696A (en) | 2018-01-05 |
| CN107537696B true CN107537696B (en) | 2019-08-27 |
Family
ID=60970265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710692352.1A Expired - Fee Related CN107537696B (en) | 2017-08-14 | 2017-08-14 | A kind of Fine particle processing direct-reverse flotation purifying technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107537696B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108745656B (en) * | 2018-05-23 | 2020-04-07 | 湖南有色金属研究院 | Method for improving flotation efficiency of fine-particle graphite |
| CN111841830B (en) * | 2020-06-28 | 2022-04-12 | 中国地质科学院郑州矿产综合利用研究所 | Low-grade middling sorting method for graphite ore |
| CN114538430B (en) * | 2020-11-26 | 2023-08-25 | 鸡西市贝特瑞新能源科技有限公司 | Method for purifying graphite, lithium ion battery cathode, lithium ion battery and electric equipment |
| CN113083493A (en) * | 2021-04-12 | 2021-07-09 | 昆明理工大学 | Microwave roasting pretreatment graphite ore enhanced flotation purification method |
| CN114932009A (en) * | 2022-04-26 | 2022-08-23 | 武汉理工大学 | Comprehensive utilization method of low-grade large-scale graphite ore |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773152A (en) * | 2012-07-13 | 2012-11-14 | 四川领航石墨制品有限公司 | Fine flaky-cryptocrystalline mixed graphite separation technique |
| CN104069952A (en) * | 2014-06-06 | 2014-10-01 | 武汉理工大学 | Inhibitor for gangue mineral in graphite ore and application thereof |
| AU2015101740A4 (en) * | 2014-12-24 | 2016-01-14 | Magnis Energy Technologies Ltd | Processing of Graphite |
| CN105289835A (en) * | 2015-10-28 | 2016-02-03 | 武汉理工大学 | Purification technique for mineral separation of low-grade fine crystalline flake graphite |
| CN105457743A (en) * | 2015-11-16 | 2016-04-06 | 湖南有色金属研究院 | Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite |
-
2017
- 2017-08-14 CN CN201710692352.1A patent/CN107537696B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773152A (en) * | 2012-07-13 | 2012-11-14 | 四川领航石墨制品有限公司 | Fine flaky-cryptocrystalline mixed graphite separation technique |
| CN102773152B (en) * | 2012-07-13 | 2013-09-25 | 四川领航石墨制品有限公司 | Fine flaky-cryptocrystalline mixed graphite separation technique |
| CN104069952A (en) * | 2014-06-06 | 2014-10-01 | 武汉理工大学 | Inhibitor for gangue mineral in graphite ore and application thereof |
| AU2015101740A4 (en) * | 2014-12-24 | 2016-01-14 | Magnis Energy Technologies Ltd | Processing of Graphite |
| CN105289835A (en) * | 2015-10-28 | 2016-02-03 | 武汉理工大学 | Purification technique for mineral separation of low-grade fine crystalline flake graphite |
| CN105457743A (en) * | 2015-11-16 | 2016-04-06 | 湖南有色金属研究院 | Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite |
Non-Patent Citations (2)
| Title |
|---|
| 石墨提纯工艺研究进展;罗立群等;《化工进展》;20140805;第2112-2113页 * |
| 石墨提纯方法进展;葛鹏等;《金属矿山》;20101015;第39页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107537696A (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107537696B (en) | A kind of Fine particle processing direct-reverse flotation purifying technique | |
| CN105289835B (en) | A kind of low-grade Fine particle processing purification by mineral technique | |
| CN106513164B (en) | A kind of big scale Scaly graphite mine floatation process | |
| CN107739029B (en) | Crystalline graphite flake protection and quality separation method | |
| CN107377200B (en) | A kind of purification by mineral method of high clay Fine particle processing | |
| CN102744146B (en) | Ore-dressing method for low-grade bauxite | |
| CN109647630B (en) | Short-process purification method of graphite | |
| CN102744152A (en) | Reverse/direct flotation technology of collophanite | |
| CN105381868B (en) | Physical beneficiation phosphorus reduction method for skarn type high-phosphorus molybdenum ore | |
| CN109607527A (en) | A kind of purification by mineral method of low-grade micro crystal graphite | |
| CN101274306B (en) | Complete flotation mineral separation process for polymetallic siderite | |
| CN104841569A (en) | Flotation technology of middle-low-grade silica-calcia bearing phosphate rock | |
| CN109482356B (en) | Method for flotation of uranium niobium-titanium ore and application of combined collecting agent | |
| CN103551255A (en) | Molybdenum oxide ore flotation collecting agent and using method | |
| CN110371967A (en) | A kind of graphite flakes low-quality low concentration protection extraction process | |
| CN104511373A (en) | Mineral separation method for high-oxidative molybdenum ore | |
| CN107537679A (en) | A kind of purification by mineral method of low-grade flaky graphite | |
| CN112474065B (en) | Method for selecting phosphorus from low-grade vanadium titano-magnetite tailings | |
| CN101264466B (en) | High phosphorus and sulphur siderite full flotation mineral separation method | |
| CN111715397A (en) | Mixed roughing method for extra-large scale graphite ores | |
| CN108906337A (en) | Mineral separation method for improving production index and reducing influence of production backwater on production index of carbon-containing gold ore | |
| CN103816977A (en) | Coking middling coal coarse grinding and flotation method in coking | |
| CN105540570B (en) | Method for producing medium-carbon and high-carbon crystalline flake graphite by two-step method | |
| CN107774456A (en) | Post machine joint is segmented asynchronous coarse concentrate regrinding and selects lead method | |
| CN105964401B (en) | Mineral separation process for high-iron nepheline ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190827 Termination date: 20210814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |