CN101269352A - Beneficiation method for black and white tungsten fine deposit - Google Patents
Beneficiation method for black and white tungsten fine deposit Download PDFInfo
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- CN101269352A CN101269352A CNA2008100278736A CN200810027873A CN101269352A CN 101269352 A CN101269352 A CN 101269352A CN A2008100278736 A CNA2008100278736 A CN A2008100278736A CN 200810027873 A CN200810027873 A CN 200810027873A CN 101269352 A CN101269352 A CN 101269352A
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Abstract
The invention relates to an ore dressing method for black-and-white tungsten fine deposit. The method is characterized in that: (1) gravity concentrate and gravity tailings are obtained by gravity desliming; (2) sulphide concentrate and sulphide ore flotation tailing are obtained by sulphide flotation; (3) the mixed flotation of black-and-white tungsten is performed, the sulphide ore flotation tailing is added with a regulator such as sodium carbonate, sodium silicate, aluminum sulfate, and lead nitrate, and is also added with a collector such as sulfating nascent soap; black-and-white tungsten mixed flotation concentrate and black-and-white mixed flotation tailing are obtained after one-time rough flotation, two or three times of fine flotation and two or three times of scavenging. The method provided by the invention is characterized in that the recovery process of the black-and-white tungsten fine deposit is simple, the flotation process of mixed black-and-white tungsten is stable, the recovery rate of tungsten is high and the cost of the dose is low. The method is suitable for the black-and-white tungsten fine deposit of which the content WO3 ranges from 0.10 to 0.50 percent, the WO3 is less than 30 micrometers and metals account for no less than 60 percent.
Description
Technical field
The present invention is a kind of beneficiation method that reclaims the black and white tungsten mineral from black and white tungsten fine mud.
Background technology
China's tungsten resource is abundant, and reserves and output all account for first place, the world, influences the recovery that key that each tungsten selects factory's tungsten overall recovery is tungsten slurry at present.The tungsten slurry of China has characteristics such as productive rate is big, tenor is high, fine size, generally account for out grand raw ore amount 10～15%, WO
3Content 0.15～0.5%, WO
3Amount of metal accounts for out the grand total WO of raw ore
315～20%, in the thin mud less than the WO of 74 microns grades
3The metal occupation rate is 85～99%, less than the WO of 30 microns grades
3The metal occupation rate surpasses 60%, and less than 30 microns grade gravity separation inferior separating effect.According to statistics, current to select the rate of recovery of factory's black and white tungsten fine mud only be 20～30%, grade 15～30%, and the sorting index that therefore improves black and white tungsten fine mud is the key that improves tungsten ore dressing overall recovery.
The beneficiation method of black and white tungsten fine mud has at present: classification-gravity treatment-flotation-magnetic method and full float glass process.
Classification-gravity treatment-flotation-magnetic method is after black and white tungsten fine mud is adopted two sections cyclone classifications, roughly select enrichment greater than 30 microns grades with thin mud cutting shaking table, table concentrate carries out floatation desulphurization and gets tungsten concentrate through table concentration again, adopt centrifuge to roughly select less than 30 microns grades, the runout belt chute is selected, behind the floatation desulphurization again magnetic separation get low tungsten concentrate.The shortcoming of this method is that the tungsten ore product wolframite thing of being unrealized separates with scheelite mineral, has wolframite thing and scheelite mineral in the low tungsten product simultaneously.Not only flow process complexity, device category are many and accuracy requires highly for this method, and industrial production adaptability is relatively poor, and the recovering effect of black and white tungsten fine mud is relatively poor.
Full float glass process is with black and white tungsten fine mud direct flotation, remove sulfide mineral after, carry out the bulk flotation of black and white tungsten, black and white tungsten bulk flotation concentrate through Peter Luo Fufa selected separate white tungsten fine ore and wolframite.This method flow is simple, but because the tungsten metal occupation rate less than 30 microns grades surpasses 60% in the black and white tungsten fine mud, mica, calcite, fluorite, kaolinic mineral content are up to 30～45% in the black and white tungsten fine mud, and the floatability of these mineral is better, cause that black and white tungsten bulk flotation chats internal circulating load is big, black and white tungsten bulk flotation concentrate grade is low, the selected fractional dose of black and white tungsten bulk flotation concentrate is big, dosing is big.
China Patent No. 200410051961.1 discloses a kind of beneficiation method of black and white tungsten mineral, and this method is to containing WO usually
30.2%～2.0%, black and white tungsten ratio is behind 1: 9～9: 1 the crushing raw ore ore grinding, after low intensity magnetic separation removes iron mineral and sulfide flotation and removes sulfide mineral, in its mine tailing, add a certain amount of benzene first hydroximic acid and sulphation oleic acid soap or tal fibre soap and make collecting agent, waterglass and aluminum sulfate are combined modifier, carry out the bulk flotation of black and white tungsten, black and white tungsten bulk flotation concentrate carries out ore pulp and heats and obtain white tungsten fine ore after selected, the cleaner tailings of heating obtains wolframite and tungsten slurry concentrate respectively through table concentration and tungsten slurry flotation operation, and this method abbreviates the GY method as.When using this method and carrying out the bulk flotation of black and white tungsten, black and white tungsten bulk flotation concentrate WO
3Content is close, but the rate of recovery is lower.
Summary of the invention
The objective of the invention is to propose a kind of to black and white tungsten fine mud good separation effect, black and white tungsten bulk flotation concentrate grade height, rate of recovery height, beneficiation method that reagent cost is low.
Beneficiation method of the present invention is made up of following steps according to this: 1) gravity treatment desliming: black and white tungsten fine mud through roughly select, selected, scan to sort and obtain gravity concentrate and gravity tailings; 2) sulfide flotation: gravity concentrate is concentrated to 30～45% concentration, and sulfide flotation obtains sulphur concentrate and sulfide flotation mine tailing; 3) black and white tungsten bulk flotation:, in the sulfide flotation mine tailing, add and adjust agent sodium carbonate 100～500 grams, waterglass 500～5000 grams, aluminum sulfate 100～2000 grams, plumbi nitras 50～1000 grams to the ore deposit by thin mud per ton, stirred 1～10 minute; Add collecting agent sulphation oleic acid soap 50～500 grams, stirred 1～10 minute; Roughly select through 1 time, 2～3 times selected, scans, obtain black and white tungsten bulk flotation concentrate and black and white tungsten bulk flotation mine tailing for 2～3 times.50～85% sulphation oleic acid soap is used to roughly select, and 15～50% are used to scan.
Characteristics of the present invention are: it is simple that black and white tungsten fine mud reclaims technological process, black and white tungsten bulk flotation process stabilization, and tungsten recovery rate height, reagent cost are low, used beneficiation reagent environmentally safe, tailing water can reach emission request through the lime simple process.
Description of drawings
Fig. 1 is the beneficiation flowsheet figure of black and white tungsten fine mud of the present invention.
The specific embodiment
To contain WO
30.10～0.50%, molybdenum 0.013～0.50%, bismuth 0.03～0.60% is less than 30 microns grade WO
3The black and white tungsten fine mud of metal occupation rate 〉=60% carries out the gravity treatment desliming, the gravity treatment desliming is sorted for three sections by one roughing, primary cleaning, once purging selection to be formed, it is selected that the centrifuge rough concentrate enters centrifuge, the centrifuge cleaner tailings returns centrifuge and roughly selects, the centrifuge rougher tailings enters shaking table and scans, the selected concentrate of shaking table scavenger concentrate and centrifuge is merged into gravity concentrate, its WO
3〉=1.5%, the rate of recovery 〉=80%.Gravity concentrate is concentrated to 30～45% concentration through concentrator, enters sulfide flotation, obtains sulphur concentrate and sulfide flotation mine tailing; By thin mud per ton to the ore deposit, in the sulfide flotation mine tailing, add and adjust agent sodium carbonate 100～500 grams, waterglass 500～5000 grams, aluminum sulfate 100～2000 grams, plumbi nitras 50～1000 grams, stir after 1～10 minute, add collecting agent sulphation oleic acid soap 50～500 grams again, stirred 1～10 minute, and roughly selected through 1 time, 2～4 times selected, scan, obtain WO for 2～3 times
38～20% black and white tungsten bulk flotation concentrate and black and white tungsten bulk flotation mine tailing.50～85% sulphation oleic acid soap is used to roughly select, and 15～50% are used to scan.Black and white tungsten bulk flotation concentrate is through the selected white tungsten fine ore that obtains of heating, and the cleaner tailings of heating obtains wolframite through table concentration.
Embodiment 1
Black and white tungsten fine mud contains WO
30.37%, less than 30 microns grade WO
3The metal occupation rate is 67%, and black and white tungsten ratio is 6: 4.Black and white tungsten fine mud is through the gravity separation method desliming, and the gravity concentrate that obtains carries out sulfide flotation be concentrated to 35% concentration through concentrator after.The regime of agent that the sulfide flotation mine tailing is pressed table 1 adds adjustment agent sodium carbonate, waterglass, aluminum sulfate, plumbi nitras, stirs 8 minutes, adds collecting agent sulphation oleic acid soap and stirs after 6 minutes, carry out the bulk flotation of black and white tungsten, roughly select through 1 time, 2 times selected, scan for 2 times, obtain containing WO
38.29% black and white tungsten bulk flotation concentrate, the rate of recovery 75.58%.
Embodiment 2
Black and white tungsten fine mud contains WO
30.3%, less than 30 microns grade WO
3The metal occupation rate is 73%, and wherein black and white tungsten ratio is 6: 4, and black and white tungsten fine mud is through the gravity separation method desliming, and the gravity concentrate that obtains carries out sulfide flotation be concentrated to 33% concentration through concentrator after.The sulfide flotation mine tailing is pressed the regime of agent of table 1, adds to adjust agent sodium carbonate, waterglass, aluminum sulfate, plumbi nitras, stirs 6 minutes, add collecting agent sulphation oleic acid soap and stir after 7 minutes, carry out the bulk flotation of black and white tungsten, roughly select through 1 time, 3 times selected, scans, obtain containing WO for 2 times
315.13% black and white tungsten bulk flotation concentrate, the rate of recovery 77.59%.
Embodiment 3
Black and white tungsten fine mud contains WO
30.21%, less than 30 microns grade WO
3The metal occupation rate is 81%, and black and white tungsten ratio is 5: 4, and black and white tungsten fine mud carries out sulfide flotation after using earlier gravity separation method desliming, the gravity concentrate that obtains to be concentrated to 30% concentration through concentrator.The sulfide flotation mine tailing is pressed the regime of agent of table 1, adds to adjust agent sodium carbonate, waterglass, aluminum sulfate, plumbi nitras, stirs 10 minutes, adds collecting agent sulphation oleic acid soap, stir after 5 minutes, carry out the bulk flotation of black and white tungsten, roughly select through 1 time, scan for 2 times, 2 times selected, obtains containing 10.63% WO
3Black and white tungsten bulk flotation concentrate, the rate of recovery 73.60%.
By table 1 as seen, to containing 0.10～0.50%WO
3, less than 30 microns grade WO
3Metal occupation rate 〉=60%, 5: 4～6: 4 three different black and white tungsten fine mud sample ores of black and white tungsten ratio wherein adopt method of the present invention, obtain containing WO
38～20% black and white tungsten bulk flotation concentrate, the rate of recovery 〉=70%.
Black and white tungsten fine mud is through the gravity separation method desliming, and the gravity concentrate that obtains carries out sulfide flotation be concentrated to 30～33% concentration through concentrator after, with the GY method sulfide flotation mine tailing is carried out the bulk flotation of black and white tungsten, obtains containing WO
38～20% black and white tungsten bulk flotation concentrate, the rate of recovery 50～60%.Full float glass process is that black and white tungsten fine mud is directly carried out sulfide flotation, the sulfide flotation mine tailing is pressed the regime of agent of table 1 embodiment 1, add and adjust agent sodium carbonate, waterglass, aluminum sulfate, plumbi nitras, stirred 10 minutes, add collecting agent sulphation oleic acid soap, stir after 5 minutes, carry out the bulk flotation of black and white tungsten, carry out the bulk flotation of black and white tungsten, the black and white tungsten bulk flotation concentrate that obtains contains WO approximately
32.73%, the rate of recovery has only 79.1%.
The present invention is applicable to WO
3Content 0.10～0.50%, less than the WO of 30 microns grades
3The black and white tungsten fine mud of metal occupation rate 〉=60%.
Claims (2)
1. the beneficiation method of a black and white tungsten fine mud is characterized in that being made up of following steps according to this: 1) gravity treatment desliming: black and white tungsten fine mud through roughly select, selected, scan to sort and obtain gravity concentrate and gravity tailings; 2) sulfide flotation: gravity concentrate is concentrated to 30～45% concentration, and sulfide flotation obtains sulphur concentrate and sulfide flotation mine tailing; 3) black and white tungsten bulk flotation:, in the sulfide flotation mine tailing, add and adjust agent sodium carbonate 100～500 grams, waterglass 500～5000 grams, aluminum sulfate 100～2000 grams, plumbi nitras 50～1000 grams to the ore deposit by thin mud per ton, stirred 1～10 minute; Add collecting agent sulphation oleic acid soap 50～500 grams, stirred 1～10 minute; Roughly select through 1 time, 2～3 times selected, scans, obtain black and white tungsten bulk flotation concentrate and black and white tungsten bulk flotation mine tailing for 2～3 times.
2. beneficiation method according to claim 1 is characterized in that 50～85% sulphation oleic acid soap is used to roughly select, and 15～50% are used to scan.
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| CN101579653A (en) * | 2009-06-10 | 2009-11-18 | 广州有色金属研究院 | Benefication method for concentrating fine tungsten ore in tailings by warming scheelite |
| CN101869876A (en) * | 2010-05-24 | 2010-10-27 | 广州有色金属研究院 | Ore dressing method of low-grade scheelite |
| CN102211053A (en) * | 2011-05-27 | 2011-10-12 | 广州有色金属研究院 | Method for separating black and white tungsten bulk flotation rough concentrates |
| CN102284353A (en) * | 2011-08-15 | 2011-12-21 | 大余县东宏锡制品有限公司 | Method for recovering tungsten-tin metal from ethylene-propylene terpolymerisate (APT) wastes |
| CN101716559B (en) * | 2009-12-16 | 2012-11-07 | 中南大学 | Floating and collecting agent of bertrandite beryllium ores and application thereof |
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| CN104128251A (en) * | 2014-07-24 | 2014-11-05 | 江西理工大学 | Beneficiation method of tungsten fine silt |
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| CN111495579A (en) * | 2020-04-28 | 2020-08-07 | 赣州有色冶金研究所 | Method for recovering tungsten and tin from fine mud and coarse sand |
| CN111495579B (en) * | 2020-04-28 | 2022-04-12 | 赣州有色冶金研究所有限公司 | Method for recovering tungsten and tin from fine mud and coarse sand |
| CN113019685A (en) * | 2021-04-09 | 2021-06-25 | 江西理工大学 | Beneficiation method for recycling wolframite from tungsten fine mud |
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