CN1401433A - Grinding while floatation process for carrying out floatation separation in grinding - Google Patents
Grinding while floatation process for carrying out floatation separation in grinding Download PDFInfo
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- CN1401433A CN1401433A CN 01128100 CN01128100A CN1401433A CN 1401433 A CN1401433 A CN 1401433A CN 01128100 CN01128100 CN 01128100 CN 01128100 A CN01128100 A CN 01128100A CN 1401433 A CN1401433 A CN 1401433A
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- 238000000227 grinding Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 title claims abstract description 39
- 238000000926 separation method Methods 0.000 title description 5
- 230000002000 scavenging effect Effects 0.000 claims abstract description 7
- 238000005188 flotation Methods 0.000 claims description 73
- 238000007688 edging Methods 0.000 claims description 42
- 238000007667 floating Methods 0.000 claims description 39
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 28
- 239000011707 mineral Substances 0.000 claims description 28
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 239000003112 inhibitor Substances 0.000 claims description 4
- 238000010979 pH adjustment Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 16
- 238000011084 recovery Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 3
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- 238000005516 engineering process Methods 0.000 description 13
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- 239000007858 starting material Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 238000002386 leaching Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 3
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
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- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
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- 238000002791 soaking Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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Abstract
A process for grinding and hydrosizing ore at same time includes crushing raw ore, feeding it into tower-type grinding floatation machine while adding pH regulator, supprssor and collector, grinding while hydrosizing, collecting froth, refining in fine floatation machine, returning tail sand back to grinding floatation machine, collecting the tail sand of grinding floatation machine, scavenging in the scavenging floatation machine, and returning the scavenged froth back to the grinding floatation machine. Its advantages are short process flow and high recovery yield.
Description
Technical field:
The present invention relates to the flotation of mineral, specifically is the new technology of the floatability mineral being carried out floating and enriching processing, is when the floatability mineral are carried out ore grinding, finishes the FLOTATION SEPARATION to the floatability mineral.
Background technology:
The above ore of the 90-95% of the world today needs through beneficiation enrichment, could so just be needed a large amount of mine concentrators by commercial Application such as metallurgy.In these mine concentrators, the quantity of flotation mill accounts for more than the 30-40%.No matter domestic existing flotation mill is, still external, use all be traditional ore grinding---floatation process.
The principle process of transmission ore grinding-floatation process as shown in Figure 1, the raw ore that contains purpose floatability mineral feeds ore grinding in the ore mill (horizontal ball mill) through crushing operation; Ore milling product enters classification in the grader (spiral classifier or cyclone), the classification sand return is returned in the ore mill and is regrinded, the classification overflow of qualified grade fineness, through ore pulp adjustment (comprising that dense concentration adjustment and the pH of carrying out adjusts and add collecting agent, suppress to size mixing and stir adjustment), enter to roughly select in the flotation device and roughly select; Roughly select concentrate (froth pulp) and enter in the precision sorting flotation machine selectedly, choose the final qualified product that contains purpose floatability mineral, selected tailings returns to roughly select in the flotation device again and roughly selects; The tailings product of roughly selecting enters to be scanned in the scavenging flotation machine and finally abandons qualified tailings, and the froth pulp that contains purpose floatability mineral of scanning generation returns to roughly select in the flotation device again and sorts.It is closed circuit that thereby whole ore grinding-floatation process forms.
In brief, transmission ore grinding-floatation process is exactly a first ore grinding in ball mill, after the ore that will contain purpose floatability mineral is ground to certain fineness, pulp density and PH is adjusted to a certain degree, is transported to and carries out flotation in the flotation device.Floatation process comprise roughly select, selected and scan.
Because the ball mill that uses in the ore grinding mostly is horizontal ball mill, comprises lattice type and overflow type.The horizontal ball mill of which kind of form no matter, because the version of itself and the restriction of function, in grinding machine, can not form the suitable concn that is suitable for the flotation operation requirement and the ore pulp of granularity, and inflation is also very difficult equably, so required these satisfied two primary conditions of flotation do not possess, realize that in ore grinding flotation is also just impossible in horizontal grinding machine.Like this, at traditional mill---in the floating technology, ore milling product enters the course of conveying that needs a long period and path in the flotation device, if this process process concentrator, the time is quite long so.Sometimes can reach 1～2 day, ore pulp is in this section course of conveying, the fresh active surface of floatability ore particle may be polluted---covered by oil film or dirty film, oxidation etc. may take place in sulfide, all these change all can cause the decline of mineral floatability, the recovery rate in ore-dressing of floatability mineral is reduced, this be one at traditional ore grinding---the problem that exists in the floatation process, this problem is at traditional ore grinding---and just fail at the beginning of floatation process is born to solve always, and the dream of just abandoning a large amount of mine tailings at grinding section can't be come true.
Summary of the invention:
For the process that makes the mineral enrichment is simpler, thereby reduce production costs, the invention provides a kind of floating new process of limit edging of realizing flotation in grinding process, its flow process as shown in Figure 2.The crushing raw ore that at first will contain purpose floatability mineral, it is characterized in that: crushed product feeds in the tower-type grinding floatation machine, add pH adjustment agent simultaneously in tower-type grinding floatation machine, inhibitor and collecting agent, material carry out the limit edging in tower-type grinding floatation machine floating; The froth pulp of tower-type grinding floatation machine enters in the outside precision sorting flotation machine selected and select qualified selected product, and selected tailings returns and carries out regrinding and reconcentration in the tower-type grinding floatation machine; The tailings of tower-type grinding floatation machine enters outside scavenging flotation machine and further scans out qualified tailings and abandon, and scans froth pulp and returns regrinding and reconcentration in the tower-type grinding floatation machine.
The present invention realizes that in grinding process requiring the upper surface effluent concentration at tower-type grinding floatation machine is 28～36% in the floating process of the limit edging of flotation.
In fact, can realize in grinding process that the key problem in technology of flotation provides a kind of tower-type grinding floatation machine, tower-type grinding floatation machine of the present invention is Chinese patent ZL91106261.0, ZL96225373.1, the improved structure of ZL00212519.6 tower grinding-leaching mill, be made up of tower body, agitating auger body, driving mechanism, driving mechanism drives the agitating auger body by the agitating auger axle, it is characterized in that: tower body is divided into two parts about flotation area and the edging floating region, limit; The limit is provided with the agitating auger body in the edging floating region, and fills milling medium; The top of flotation area is provided with overflow launder, and the middle part is provided with auxiliary flotation agitator arm, and the bottom is provided with deflector chute, ore tailing outlet.
Existing tower grinding-leaching mill, drive milling medium by vertical helical and carry out ore grinding, successfully realize soaking while grinding and its equipment to containing golden 5-7g/t quartz vein oxide ore, promptly in ore grinding, realize the cyaniding of gold is leached, the soaking while grinding and its equipment rate reaches about 93%, ore pulp has in tower grinding mill by classification, dense effect, therefore by adjusting the ore grinding parameter, just can obtain the ore pulp of suitable concn and granularity at an easy rate, this kind tower grinding-leaching mill has unique inflatable structure, guarantees that bubble distributes in ore pulp more equably.This spline structure is again through improving, and by increase mineralising district and flotation area, and after increasing the ore removal groove and scraping the bubble device, tower grinding-leaching mill just becomes tower-type grinding floatation machine.Adjust agent, foaming agent and collecting agent toward wherein adding pH, just can carry out flotation in ore grinding to containing the ore of purpose floatability mineral in tower-type grinding floatation machine, this technology promptly is called the floating technology of limit edging.
Limit of the present invention edging floats technology:
(1) in ore grinding, carries out flotation, make the floatability ore particle be ground to particle diameter and can float the upper limit and just can be sorted out, prevent that mineral are overground, cause phenomenons such as secondary argillization, reduced abrasion and power consumption simultaneously, and production capacity is increased.
(2) the edging floating mineral monomer that can guarantee in limit dissociates surperficial just sorted out when fresh, the most active (this moment, the floatability of ore particle was best), has prevented phenomenons such as mineral surfaces is contaminated, oxidation, can improve recovery rate in ore-dressing.
(3) the limit edging is floating can just abandon a large amount of mine tailing (or abandoning through scanning again slightly) at grinding section, has reduced the ore pulp conveying capacity of later operation, and then has saved the number of devices of subsequent job, has saved equipment investment, and plant area is reduced, and saves the investment of founding the factory.
(4) realize that the tower-type grinding floatation machine of the floating new technology of limit edging integrates ore grinding, classification, the ore pulp adjustment of tradition ore grinding-floatation process, function such as roughly selects, and shortens the flow process length of traditional handicraft greatly, and can economize on electricity more than 50%.
(5) promoting mineral processing subject development, is an one new growing point, can hew out a new research direction and field.
(6) might impel traditional ore grinding-floatation process that a fundamental change takes place.
In sum, in tower-type grinding floatation machine, realize mineral limit, order ground edging is floated, make at grinding section and just can abandon a large amount of mine tailings (or slightly through scanning), reduced the conveying capacity of subsequent job ore pulp, shortened flow process length, save equipment investment; Plant area is dwindled, capital expenditure descends, on the other hand, and limit ore grinding limit flotation, avoid or reduced conventional mill---the flotation again of floating flow process elder generation's ore grinding, some physics or chemical change that the ore particle surface is taken place in being transported to floatation process, contaminated as the ore particle surface, covered by oil film or dirty film, oxidation etc. takes place, ore particle, is just flotated when fresh, the most active on its surface, can improve recovery rate in ore-dressing.
In a word, tower-type grinding floatation machine carries out the floating advantage of limit edging to mineral, and flotation mill's unit cost of production will be descended, and profit margin rises, and the investment of founding the factory reduces and accelerate payoff period, has remarkable economic efficiency and social benefit.Do not rant out: the realization of this new technology will be a fundamental change to tradition mill-floating technology, be the revolution to tradition mill-floating technology.
Description of drawings:
Accompanying drawing 1 is traditional ore grinding-floatation process principle process;
Accompanying drawing 2 is the floating technological principle flow process of limit of the present invention edging;
Accompanying drawing 3 is Φ 159 * 840 tower-type grinding floatation machine device structures signal of laboratory development success;
Accompanying drawing 4 is a limit edging blister foam product photo.
The specific embodiment:
Crushing operation before the ore grinding is consistent with traditional ore grinding-floatation process.This technology is distinguished with traditional ore grinding-floatation process, and crushed product feeds in the tower-type grinding floatation machine, adds pH adjustment agent simultaneously in tower-type grinding floatation machine, and inhibitor and collecting agent, material carry out the limit edging in tower-type grinding floatation machine floating.Tower-type grinding floatation machine integrates the ore grinding-classification-ore pulp adjustment of tradition mill-floating technology-roughly select function.The froth pulp on tower-type grinding floatation machine top enters in the outside precision sorting flotation machine selected and select qualified selected product, and selected tailings returns and carries out regrinding and reconcentration in the tower-type grinding floatation machine; The tailings of tower-type grinding floatation machine enters outside scavenging flotation machine and further scans out qualified tailings and abandon, and scans froth pulp and returns regrinding and reconcentration in the tower-type grinding floatation machine, thereby form the closed circuit of the floating technology of whole limit edging.
What deserves to be mentioned is, can as mog, concentration, the time of staying etc., can scan operation to some type mineral cancellation outside, thereby throw tail in real ore grinding (limit flotation) process by adjusting the floating job parameter of limit edging.
In addition, flotation granularity requirements according to different minerals, the tower-type grinding floatation machine outside also can be equipped with cyclone its overflow tailings product is carried out outside secondary classification, the classification sand setting returns regrinding and reconcentration in the tower-type grinding floatation machine, the classification overflow enters the outside and scans operation, and the limit edging floats and the closed circuit configuration of graded operation thereby form.Tower-type grinding floatation machine is broadly divided into two working regions: after the edging floating region, limit of bottom and the conventional flotation area on top, ore were floated through the limit edging, the rough concentrate product of selecting scraped through top, delivered to subsequent fine and was elected to be industry; The classification overflow is mine tailing (or abandoning through scanning again slightly), and the classification sand setting returns in the tower-type grinding floatation machine to be regrinded.
Embodiment device therefor structure as shown in Figure 3, by auxiliary starter motor 1, auxiliary starter reductor 2; freewheel clutch 3, main drive belt wheel 4, main drive belt 5; main gear reducer 6, bearing housing 7, concentrate jet water spout 8; the float skimming device 9 of adjustment height, froth overflow channel 10, overflow launder 11; flotation transmission negative pulley wheel 12, tension pulley 13, auxiliary flotation shaft 14; auxiliary flotation agitator arm 15, flotation chamber 16, self-protecting liner without screw bolt connection 17; (edging floating region, limit) grinding flotation chamber is vertical ore grinding chamber 18; body 19, qi of chong channel ascending adversely device 20, dump valve 21; blowing breather pipe 22; add air valve 23, gas-adding pipe 24, agitating auger body 25; milling medium (steel ball) 26; siphunculus 27 is failed in sand return, the defeated logical valve 28 of sand return, sand return pipe 29; sand return mouth 30; give ore deposit deflector chute 31, ore tailing outlet 32, agitating auger axle 33; connecting flange 34; feed launder 35, filler pipe 36, stock tank 37 is contained in sand return; chemical feed pipe 38; filling pipe 39, electric machine speed regulation switch board 40, flotation transmission drive pulley 41; main shaft 42; main (transmission) motor 43, main motor pulley 44, auxiliary starter reductor support flange 45 is formed.
Auxiliary starter freewheel clutch 13, bearing housing 7, agitating auger body 25 is given ore deposit deflector chute 31 and qi of chong channel ascending adversely device 20, and is described identical with a kind of energy-efficient tower grinding-leaching mill of Chinese patent ZL96225373.1 (mandate on July 1st, 1997).Sand return mouth 30 is the steel plate in uniform φ 8～φ 10 holes (centre-to-centre spacing 20) above the thick 20～30mm, and with body 19 spot welding.Self-protecting liner without screw bolt connection 17 and Chinese patent ZL00212519.6 vertical grinder self-protecting liner without screw bolt connection identical (mandate on June 16 calendar year 2001).
Body upper is a flotation area 15, and further by FLOTATION SEPARATION, the froth pulp of formation enters the overflow launder 11 on flotation area 15 tops to the floatability ore particle in this zone, and discharges outside the body by froth overflow channel 10.
Concentrate jet water spout 8 tips are a current distributor, make water become the fine acicular ejection, and its function is to regulate the come-up impurity content of some mineral, improves concentrate grade.
It is a flexible pipe that mine tailing goes out mine mouth 32 outsides, can adjust the relative altitude of ore removal end, thereby adjusts the ore pulp face height in flotation chamber 16.
Qi of chong channel ascending adversely device 20 is the cylinder that seals above, the uniform φ 6～φ 8 hole centre-to-centre spacing 20～25mm in periphery and top, the distance 3～5mm of its top and agitating auger body 25.Such configuration can above qi of chong channel ascending adversely pipe 20 (around reaching) feeds so that gas is by gas-adding pipe 24 and blowing breather pipe 22; Can make again has a district alive between qi of chong channel ascending adversely device 20 and the agitating auger body 25, ore pulp can be emitted along blowing breather pipe 22 by qi of chong channel ascending adversely device 20; And also make milling medium (steel ball) can not enter qi of chong channel ascending adversely device 20 and and the agitating auger body between the slit.Such configuration cooperates with sand return mouth 30; can guarantee that present device all can arbitrarily adjust internal body ore pulp surplus arbitrarily for a long time treating that material (inside is full of ore pulp) is shut down, and at auxiliary starting system 1,2; under 3 the cooperation, shut down arbitrarily starting at any time for a long time.
Agitating auger body 25 is for turning clockwise.
The feed deflector chute is extended into flotation chamber 16, is the place of 100～200mm apart from milling medium layer height, makes the thicker ore deposit raw material of giving sink down into lower edge edging floating region (grinding flotation chamber) 18 rapidly.
Mine tailing goes out mine mouth 32 and becomes the configuration of staggering of 30～45 ° of directions with giving ore deposit deflector chute 31 central angles.Dextrorotation veer with agitating auger body 25 is a benchmark, and ore tailing outlet 32 is in the place ahead of giving ore deposit deflector chute 31.Ore tailing outlet 32 is in the position of 16 lower middles, flotation chamber.Above-mentioned configuration makes ore pulp be difficult for causing short circuit, that is is unlikely to make ore pulp promptly to flow out through ore tailing outlet 32 without abundant ore grinding and flotation, thereby reduces short circuit.
Agitating auger body 25 is a fabricated structure, and the outside is a helical blade, and inside is wheel hub, and blade is fixed by bolts on the wheel hub.Agitating auger axle 33 inserts wheel hub with the circumference combination.Agitating auger body 25 foots are fixed with nut; the nut outside is the hollow cylinder protective sleeve of two top openings; nut is wrapped in inside, and the hollow cylinder protective sleeve of two top openings passes agitating auger axle 33 by two bolts of 45 ° of configurations, thereby fixing.Said structure is convenient for changing stirring vane and hollow cylinder protective sleeve, not dismantling connecting flange 34 and opening side door, does not shift out agitating auger body 25 under extra-organismal situation, can finish replacing.
The float skimming device 9 of adjustment height can be adjusted the height of scraping bubble according to the ore pulp face height in the flotation chamber 16 and according to the requirement of different ore-dressing practices, satisfies technological requirement.
Auxiliary flotation agitator arm 15 in the flotation chamber 16 has the function that stirs flotation, by its stirring, make the floatability mineral in flotation chamber 16 further by FLOTATION SEPARATION.
Use of the present invention is as follows: Xian Jiashui, do not cross the milling medium layer in the vertical ore grinding chamber, the clutch freewheel clutch 3 then, start auxiliary starter motor 1, drive main drive belt wheel 4 by the auxiliary starter reductor, and by main gear reducer 6, and then drive main shaft 42 and 25 rotations of agitating auger body.Start main (transmission) motor 43 then, close auxiliary starter motor 1 simultaneously and throw off freewheel clutch 3, realize the driven of equipment.Reinforced by feed launder 35 then, add water by filler pipe 36 by job requirements concentration, PH adjustment agent adds with mineral aggregate or adds by filler pipe 36 wiring solution-formings.Collecting agent (inhibitor) etc. joins in the sand-returning channel 37 by chemical feed pipe 38, provides the edging floating region, limit in vertical ore grinding chamber 18 in the body.Belt pulley 41 on the main shaft 42 rotates by the belt pulley 12 that belt drives on the auxiliary flotation shaft 14, thereby makes auxiliary flotation agitator arm 15 rotations.Floatability material and milling medium 26 carry out the limit edging under the driving of agitating auger axle 25 floating, under the stirring of the simultaneously levigate auxiliary stirring flotation agitator arm 15 of material in flotation chamber 16, by further FLOTATION SEPARATION, the froth pulp that forms rises to the froth zone on ore pulp surface, form froth bed, scraper plate from the foamite system 9 of adjustment height scrapes down, and the come-up foam is scraped outside the body through froth overflow channel 10.Edging tailings floating and after auxiliary flotation in limit is discharged to outside the body by ore tailing outlet 32, and through external classification, the classification sand return is carried out regrinding and reconcentration by the edging floating region, limit that sand return pipe 29 returns the vertical ore grinding chamber 18 in the body, the classification overflow can be scanned the back by outside scavenging flotation machine and be thrown tail, scans foam and can return flotation chamber 16 flotation or return the flotation again of regrinding of edging floating region, limit by sand return pipe 29 again by feed launder 35.When needing to shut down after operation finishes, close main (transmission) motor 43, emit ore pulp by blowing breather pipe 22 again.
Embodiment 1
Used ore is few sulfide arsenic-bearing gold ore.Major metal sulfide has pyrite and mispickel in the ore, and gangue mineral is mainly quartz, is chlorite sericite and feldspar etc. secondly, contain in the ore: Au11.5g/t, Ag2.3g/t, As1.35%, S3.1%, Sb41.3g/t, Hg0.048g/t, Cu0.009%, Pb0.006%, Zn0.011%, Fe3.96%, Ca1.89%.The rusty gold granularity is very thin in the ore, and micro-fine-grained gold accounts for 20.91%, and inferior micro-gold accounts for 70.6%, and the parcel gold accounts for 69.23% in the sulfide, and the parcel gold accounts for 14.49% in the gangue.
Earlier 100～200mm lump ore is crushed to-3mm through jaw crusher and double-roll crusher, feeds tower-type grinding floatation machine through ore feeder then, give ore deposit speed 2kg/hr.Simultaneously pH is adjusted agent Na
2CO
3The amount of pressing 500g/t adds, and collecting agent butyl black powder is pressed 40g/t and added, and butyl xanthate is pressed 80g/t and added, and adds entry by 1: 2 solid-to-liquid ratio, and 2# oil foaming agent is pressed 40g/t and added.The tower-type grinding floatation machine rotating speed is by buncher and controller control, rotating speed 150～160rpm.Simultaneously air is pressed 0.3m
3/ h feeds from the tower-type grinding floatation machine bottom.Purpose floatability material limit edging in tower-type grinding floatation machine is floating, produces the bubble product, and the bubble product scrapes from the froth overflow channel of top, forms and roughly selects concentrate.Rougher tailings is drawn from position, tower-type grinding floatation machine upper middle.Floating result is as follows for the limit edging:
Go into ore deposit alloy grade: 11.5g/t.
Limit edging blister foam product: contain golden 38.3g/t, productive rate 26.1%, gold recovery 86.9%.
The limit edging floats mine tailing: contain golden 2.03g/t, productive rate 73.9%, gold recovery 13.1%.
Edging floating mine tailing in limit is after outside flotation device is further scanned, and mine tailing contains golden 1g/t, and the condition of scanning is butyl black powder 20g/t, butyl xanthate 40g/t, 2# oil 20g/t.
Scan the mine tailing productive rate; 66.8%.
Scan the foam productive rate: 7.1%.
Scan foam and contain gold grade: 11.7g/t.
Scan the rate of recovery: 7.22%.
Froth pulp such as Fig. 4 of producing in the floating process of limit edging.
Used ore is few sulfide arsenic-bearing gold ore.Contain in the ore: Au8.5g/t, Ag15.8g/t, C4.51%, CaO9.29%, S1.75%, Fe3.41%, Zn0.19%, Cu0.018%, Pb0.065%, As0.55%, SiO
2: 49.31%, Al
2O
37.5%, MgO5.80%.The distribution of gold is invisible gold more than 80%, and gold mineral was a mispickel in topmost year, accounted for invisible gold 72.8%, secondly is sulfide minerals such as pyrite, accounts for invisible gold 12.46%.20% is visible gold, but its granularity is also very thin, below 10 microns, is distributed in gangue, pyrite, mispickel, black young copper mine and the galena.
Earlier 100～200mm lump ore is crushed to-3mm through jaw crusher and double-roll crusher, feeds tower-type grinding floatation machine through ore feeder then, give ore deposit speed 2kg/hr.Simultaneously pH is adjusted the amount adding of agent CaO by 5kg/t, the collecting agent butyl xanthate is pressed 120g/t and is added, and adds entry by 1: 2 solid-to-liquid ratio, and 2# oil foaming agent is pressed 60g/t and added.The tower-type grinding floatation machine rotating speed is by buncher and controller control, rotating speed 120～130rpm.Simultaneously air is pressed 0.3m
3/ h feeds from the tower-type grinding floatation machine bottom.Purpose floatability material limit edging in tower-type grinding floatation machine is floating, produces the bubble product, and the bubble product scrapes from the froth overflow channel of top, forms and roughly selects concentrate.Rougher tailings is drawn from position, tower-type grinding floatation machine upper middle.Floating result is as follows for the limit edging:
Go into ore dressing alloy grade: 8.5g/t.
Limit edging blister foam product: contain golden 46.5g/t, productive rate 15.2%, gold recovery 83.2%.
The limit edging floats mine tailing: contain golden 1.4g/t, productive rate 84.8%, gold recovery 16.8%.
Edging floating mine tailing in limit is after outside flotation device is further scanned, and mine tailing contains golden 0.72g/t, and the condition of scanning is butyl black powder 20g/t, 2# oil 20g/t.
Scan the mine tailing productive rate; 76.3%.
Scan the foam productive rate: 8.5%.
Scan foam and contain gold grade: 7.5g/t.
Scan the rate of recovery: 7.5%.
Claims (2)
1, a kind of floating process of limit edging that in grinding process, realizes flotation, the crushing raw ore that at first will contain purpose floatability mineral, it is characterized in that: crushed product feeds in the tower-type grinding floatation machine, in tower-type grinding floatation machine, add pH adjustment agent simultaneously, inhibitor and collecting agent, material carry out the limit edging in tower-type grinding floatation machine floating; The froth pulp on tower-type grinding floatation machine top enters in the outside precision sorting flotation machine selected and select qualified selected product, selected tailings returns and carries out regrinding and reconcentration in the tower-type grinding floatation machine, the tailings of tower-type grinding floatation machine enters outside scavenging flotation machine and further scans out qualified tailings and abandon, and scans froth pulp and returns regrinding and reconcentration in the tower-type grinding floatation machine.
2, according to the described floating process of limit edging that realizes flotation in grinding process of claim 1, it is characterized in that: the upper surface effluent concentration at tower-type grinding floatation machine is 28～36%, can be implemented in the limit ore grinding limit flotation of purpose floatability mineral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011281006A CN1137002C (en) | 2001-08-29 | 2001-08-29 | Grinding while floatation process for carrying out floatation separation in grinding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011281006A CN1137002C (en) | 2001-08-29 | 2001-08-29 | Grinding while floatation process for carrying out floatation separation in grinding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401433A true CN1401433A (en) | 2003-03-12 |
| CN1137002C CN1137002C (en) | 2004-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011281006A Expired - Fee Related CN1137002C (en) | 2001-08-29 | 2001-08-29 | Grinding while floatation process for carrying out floatation separation in grinding |
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| CN (1) | CN1137002C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757981A (en) * | 2009-09-14 | 2010-06-30 | 佛山市兴民科技有限公司 | Method and device for simultaneously carrying out grinding and floatation processes on ultrafine particles |
| CN102218374A (en) * | 2010-04-13 | 2011-10-19 | 中南大学 | Method for selectively milling cassiterite multi-metal sulfides ores |
| CN110216022A (en) * | 2019-07-04 | 2019-09-10 | 长春黄金研究院有限公司 | A kind of targeting adding method thereof in more metal separation processes of sulfide flotation |
| CN112191371A (en) * | 2020-08-27 | 2021-01-08 | 中国恩菲工程技术有限公司 | Flotation method for high-magnesium sulfide ore |
| CN112403686A (en) * | 2020-10-28 | 2021-02-26 | 中国矿业大学 | Coarse-grained mineral dissociation device and method |
| CN114733651A (en) * | 2022-05-06 | 2022-07-12 | 江苏泓顺硅基半导体科技有限公司 | Continuous flotation machine for producing high-purity quartz sand in semiconductor field |
-
2001
- 2001-08-29 CN CNB011281006A patent/CN1137002C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757981A (en) * | 2009-09-14 | 2010-06-30 | 佛山市兴民科技有限公司 | Method and device for simultaneously carrying out grinding and floatation processes on ultrafine particles |
| CN102218374A (en) * | 2010-04-13 | 2011-10-19 | 中南大学 | Method for selectively milling cassiterite multi-metal sulfides ores |
| CN110216022A (en) * | 2019-07-04 | 2019-09-10 | 长春黄金研究院有限公司 | A kind of targeting adding method thereof in more metal separation processes of sulfide flotation |
| CN110216022B (en) * | 2019-07-04 | 2021-04-06 | 长春黄金研究院有限公司 | Targeted dosing method in process of separating polymetallic in sulfide ore flotation |
| CN112191371A (en) * | 2020-08-27 | 2021-01-08 | 中国恩菲工程技术有限公司 | Flotation method for high-magnesium sulfide ore |
| CN112403686A (en) * | 2020-10-28 | 2021-02-26 | 中国矿业大学 | Coarse-grained mineral dissociation device and method |
| CN114733651A (en) * | 2022-05-06 | 2022-07-12 | 江苏泓顺硅基半导体科技有限公司 | Continuous flotation machine for producing high-purity quartz sand in semiconductor field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1137002C (en) | 2004-02-04 |
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