CN102671768A - Method for improving recovery rate of molybdenite - Google Patents
Method for improving recovery rate of molybdenite Download PDFInfo
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- CN102671768A CN102671768A CN2012100858742A CN201210085874A CN102671768A CN 102671768 A CN102671768 A CN 102671768A CN 2012100858742 A CN2012100858742 A CN 2012100858742A CN 201210085874 A CN201210085874 A CN 201210085874A CN 102671768 A CN102671768 A CN 102671768A
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Abstract
The invention relates to the technical field of ore dressing of molybdenite, and discloses a method for improving a recovery rate of the molybdenite, which is characterized in that acidified water glass is adopted, the acidified water glass has a property of single-molecule silicic acid, the silicic acid has strong adsorptive performance and strong dispersion efficiency, the acidified water galss is adopted in the roughing of the molybdenum, the acidified water glass is added into a stirring bucket before the roughing of the molybdenum, and the addition quantity of the acidified water glass is 800 to 1500g/t of raw ore; the consumption and the adding place of coal gas and No.2 oil in the roughing of the molybdenum are respectively inside the stirring bucket before the roughing of the molybdenum and the secondary scavenging operation; and due to the adoption of the method, adverse impact on the production caused by the silt produced by the ore grinding can be solved, and the recovery rate can be improved. Due to the adoption of the method, adverse impact on the recovery rate of the molybdenite caused by the silt because of excessively grinding and the influence on the water quality can be improved, the content of the molybdenum (Mo) of molybdenum disulfide in the tailings can be controlled within 0.0033 percent, and the recovery rate of the metal Mo of the molybdenum disulfide can reach up to 97 percent.
Description
Technical field
The present invention relates to molybdenite technique of preparing field, relate in particular to a kind of method that improves the molybdenite rate of recovery.
Background technology
As everyone knows, metal molybdenum has a wide range of applications at industrial circle, has very high industrial value.But, there are not the mineral resources of valuable metal molybdenum at nature, need from the mineral that contain molybdenum, refine processing usually and obtain.Under present existing technical conditions molybdenite be topmost most worthy metal molybdenum come source mineral.Yet the abundance at the occurring in nature molybdenite is lower, and the molybdenum ore that exploitation is come out contains that molybdenum is very low to be difficult to directly smelt processing, needs ore dressing processing enrichment for this reason.
The molybdenum tcrude ore generally through three sections fragmentations, one section ball grinder graded after, again through one roughing, scan for three times, obtain molybdenum concntrate after the recleaning operation, its molybdenum concntrate is packed after oven dry.
The oxide mineral (Mo＜0.03%) that in our handled molybdenum ore, contains the molybdenum of trace usually, these type of mineral be still difficult the recovery under present technical merit.Improving the metal recovery rate of molybdenum mainly realizes by the yield that improves molybdenite.Molybdenite has very high natural hydrophobicity, adds suitable hydrocarbon-type oil and foaming agent and can obtain good recovery.Along with the high speed development of industry, easy choosing, high-grade molybdenum ore are exploited totally.Molybdenum ore for low taste, difficult choosing will seek out higher metal recovery rate not a duck soup.Be fully to reclaim valuable component in the molybdenum ore dressing process, require the ore grinding overflow to reach certain fineness (200 orders account for 60～65%) usually.But, in grinding process, can cause a part of mineral levigate mud (accounting for 10～15%) to occur unavoidably less than 19 microns because the hardness of each component is different in the raw ore.This parts of fine mud not only influences the taste of rough concentrate, and can cause bigger negative effect to the rate of recovery of roughly selecting of molybdenum.In addition, owing in white tungsten refining process, use a large amount of waterglass, use a large amount of limes again for handling this tailing water.When in selecting the molybdenum process, using this backwater, can occur roughly selecting foam and be clamminess, even more serious when chlorite content is high in raw ore, cause the molybdenum rate of recovery to descend.And common dispersant--the dispersion effect of-waterglass, vulcanized sodium, calgon etc. is relatively poor, is difficult to reach comparatively ideal effect.
Summary of the invention
Be clamminess in order to solve the thin mud that produces because of ore grinding and foam to occur roughly selecting, and the negative effect that brings to production, the present invention provides a kind of method that improves the molybdenite rate of recovery, makes its problem that solves above-mentioned existence, improves the molybdenum rate of recovery.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of method that improves the molybdenite rate of recovery is to adopt acidified sodium silicate, makes waterglass after the acidifying form the character of unimolecule silicic acid, and this silicic acid has strong absorption property and very strong dispersion effect, and its step is following:
1, be the waterglass after the employing acidifying in molybdenum is roughly selected, form the monomolecular silicic acid with strong absorption property and very strong dispersion effect, promptly mixed acidified sodium silicate is added in the agitator before molybdenum is roughly selected, and addition is 800～1500g/t raw ore;
2 and in molybdenum is roughly selected kerosene and 2# oil consumption and add the place and be respectively in the agitator before molybdenum is roughly selected and secondary is scanned operation; The consumption of kerosene is respectively in the agitator of molybdenum before roughly selecting 148g/t and secondary, and to scan operation be 32g/t; The consumption of 2# oil is respectively in the agitator before molybdenum is roughly selected 100g/t and secondary, and to scan operation be 20g/t;
3, in molybdenum is roughly selected, add after the acidified sodium silicate; Can improve the rough concentrate grade; The Mo content of molybdenum bisuphide is controlled in 0.0033% in the mine tailing, and the molybdenum rate of recovery of two serial sulphide ores has improved 1.36 and 1.9 percentage points respectively, has reached 97.31% and 97.02%; There is the high negative effect of chlorite content in the raw ore in the minimizing molybdenite production process, thereby improves the rate of recovery of molybdenite.
A kind of method that improves the molybdenite rate of recovery, said acidified sodium silicate are to be that 5% waterglass and concentration are 5% sulfuric acid in 1.5: 1 ratio with concentration, and acidifying forms after mixing in 5 minutes, and the rotating speed of stirring is 1440 rev/mins.
Because adopt aforesaid technical scheme, the present invention has following superiority:
A kind of method that improves the molybdenite rate of recovery can solve the negative effect that the thin mud that produces because of ore grinding brings to production, thereby reach the purpose that improves the rate of recovery.Promptly at the acidified sodium silicate that adds 800～1500g/t in the operation of roughly selecting of molybdenum.Utilize waterglass after the suitable acidifying can form the character of unimolecule silicic acid; This silicic acid has strong absorption property and very strong dispersion effect; Can improve the negative effect that the molybdenite rate of recovery brought because of the thin mud of overground generation and the influence of backwater water quality; The Mo content of molybdenum bisuphide in the mine tailing is controlled in 0.0033%, and the Mo metal recovery rate of molybdenum bisuphide reaches more than 97%.
The specific embodiment
A kind of method that improves the molybdenite rate of recovery is to adopt acidified sodium silicate, makes waterglass after the acidifying form the character of unimolecule silicic acid, and this silicic acid has strong absorption property and very strong dispersion effect, and its step is following:
1, is the waterglass after the employing acidifying in molybdenum is roughly selected, forms monomolecular silicic acid H with strong absorption property and very strong dispersion effect
2SIO
3, promptly mixed acidified sodium silicate is added in the agitator before molybdenum is roughly selected, and addition is 800～1500g/t raw ore;
2 and in molybdenum is roughly selected kerosene and 2# oil consumption and add the place and be respectively in the agitator before molybdenum is roughly selected and secondary is scanned operation; The consumption of kerosene is respectively in the agitator of molybdenum before roughly selecting 148g/t and secondary, and to scan operation be 32g/t; The consumption of 2# oil is respectively in the agitator before molybdenum is roughly selected 100g/t and secondary, and to scan operation be 20g/t;
3, in molybdenum is roughly selected, add after the acidified sodium silicate; Can improve the rough concentrate grade; The Mo content of molybdenum bisuphide is controlled in 0.0033% in the mine tailing, and the molybdenum rate of recovery of two serial sulphide ores has improved 1.36 and 1.9 percentage points respectively, has reached 97.31% and 97.02%; There is the high negative effect of chlorite content in the raw ore in the minimizing molybdenite production process, thereby improves the rate of recovery of molybdenite.
A kind of method that improves the molybdenite rate of recovery, said acidified sodium silicate are to be that 5% waterglass and concentration are 5% sulfuric acid in 1.5: 1 ratio with concentration, and acidifying forms after mixing in 5 minutes, and the rotating speed of stirring is 1440 rev/mins.
Following table is debugged since stigma in 24 days 8 November the accumulated result in its result and November 1 to 23 for industry.
From table, can find out: in roughly selecting, add after 800～15000g/t acidified sodium silicate; The rough concentrate grade slightly improves; The Mo content of molybdenum bisuphide is controlled in 0.0033% in the mine tailing; The molybdenum rate of recovery of two serial sulphide ores has improved 1.36 and 1.9 percentage points respectively, has reached 97.31% and 97.02%.The present invention improves the method for the molybdenite rate of recovery, can solve the negative effect that the thin mud that produces because of ore grinding brings to production, thereby reach the purpose that improves the rate of recovery.
Claims (2)
1. method that improves the molybdenite rate of recovery is characterized in that: be to adopt acidified sodium silicate, make waterglass after the acidifying form the character of unimolecule silicic acid, and this silicic acid has strong absorption property and very strong dispersion effect, its step is following:
1), be the waterglass that in molybdenum is roughly selected, adopts after the acidifying, form monomolecular silicic acid with strong absorption property and very strong dispersion effect, promptly mixed acidified sodium silicate is added on molybdenum and roughly selects in the preceding agitator, addition is 800～1500g/t raw ore;
2) consumption of kerosene and 2# oil and add the place and be respectively in the agitator before molybdenum is roughly selected and secondary is scanned operation and in molybdenum is roughly selected; The consumption of kerosene is respectively in the agitator of molybdenum before roughly selecting 148g/t and secondary, and to scan operation be 32g/t; The consumption of 2# oil is respectively in the agitator before molybdenum is roughly selected 100g/t and secondary, and to scan operation be 20g/t;
3), in molybdenum is roughly selected, add after the acidified sodium silicate; Can improve the rough concentrate grade; The Mo content of molybdenum bisuphide is controlled in 0.0033% in the mine tailing, and the molybdenum rate of recovery of two serial sulphide ores has improved 1.36 and 1.9 percentage points respectively, has reached 97.31% and 97.02%; There is the high negative effect of chlorite content in the raw ore in the minimizing molybdenite production process, thereby improves the rate of recovery of molybdenite.
2. a kind of method that improves the molybdenite rate of recovery according to claim 1; It is characterized in that: said acidified sodium silicate is to be that 5% waterglass and concentration are 5% sulfuric acid in 1.5: 1 ratio with concentration; Acidifying forms after mixing in 5 minutes, and the rotating speed of stirring is 1440 rev/mins.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521354A (en) * | 2012-07-03 | 2014-01-22 | 中国科学院兰州化学物理研究所 | Method for improving asphalt yield in oil sand water base extraction by adding diluent |
| CN103878069A (en) * | 2012-12-19 | 2014-06-25 | 沈阳有色金属研究院 | Molybdenite separation method |
Citations (4)
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| US4362552A (en) * | 1979-01-29 | 1982-12-07 | Vojislav Petrovich | Froth flotation of ores |
| CN101455997A (en) * | 2007-12-11 | 2009-06-17 | 灵宝市金源矿业有限责任公司 | Method for increasing molybdenum ore dressing recovery percentage |
| US20110198296A1 (en) * | 2010-02-16 | 2011-08-18 | Child Daniel E | Sulfide flotation aid |
| CN102205269A (en) * | 2011-05-18 | 2011-10-05 | 中铁资源集团有限公司 | Concentration method of molybdenum-tungsten oxide mixed rough concentrate |
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2012
- 2012-03-29 CN CN2012100858742A patent/CN102671768A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362552A (en) * | 1979-01-29 | 1982-12-07 | Vojislav Petrovich | Froth flotation of ores |
| CN101455997A (en) * | 2007-12-11 | 2009-06-17 | 灵宝市金源矿业有限责任公司 | Method for increasing molybdenum ore dressing recovery percentage |
| US20110198296A1 (en) * | 2010-02-16 | 2011-08-18 | Child Daniel E | Sulfide flotation aid |
| CN102205269A (en) * | 2011-05-18 | 2011-10-05 | 中铁资源集团有限公司 | Concentration method of molybdenum-tungsten oxide mixed rough concentrate |
Non-Patent Citations (1)
| Title |
|---|
| 袁致涛等: "酸化水玻璃对钼矿浮选的影响", 《金属矿山》, no. 2, 28 February 2009 (2009-02-28) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521354A (en) * | 2012-07-03 | 2014-01-22 | 中国科学院兰州化学物理研究所 | Method for improving asphalt yield in oil sand water base extraction by adding diluent |
| CN103878069A (en) * | 2012-12-19 | 2014-06-25 | 沈阳有色金属研究院 | Molybdenite separation method |
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Application publication date: 20120919 |