CN101722112B - Process for performing sulfide ore flotation by using liquid carbon dioxide - Google Patents
Process for performing sulfide ore flotation by using liquid carbon dioxide Download PDFInfo
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- CN101722112B CN101722112B CN 201010300222 CN201010300222A CN101722112B CN 101722112 B CN101722112 B CN 101722112B CN 201010300222 CN201010300222 CN 201010300222 CN 201010300222 A CN201010300222 A CN 201010300222A CN 101722112 B CN101722112 B CN 101722112B
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- 238000005188 flotation Methods 0.000 title claims abstract description 70
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 62
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 30
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000033558 biomineral tissue development Effects 0.000 abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 4
- 239000011707 mineral Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 6
- 238000002309 gasification Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910001748 carbonate mineral Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 pyrite Chemical compound 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
本发明公开了应用液体二氧化碳进行硫化矿浮选的工艺。针对硫化矿浮选中，由于硫化矿易粉碎、过磨，气泡与硫化矿矿物颗粒碰撞较难，浮选捕收效果不佳的问题。采用液体二氧化碳浮选工艺，通过减压阀(2)将液体二氧化碳(1)经过进气口(4)与进料口(5)进入的浮选矿浆一起通入浮选柱(3)中，二氧化碳气化，在疏水矿粒表面长出气泡，在浮选柱(3)内与磁力气泡发生器(6)产生的气泡进行逆向碰撞，实现硫化矿浮选。该方法在浮选柱内实现矿浆充分矿化均匀，浮选时间足够，具有气泡量大、尺寸微细，分散均匀，浮选捕收效果佳，无污染等优点，可用于金属矿山，化学化工，环境保护等领域。
The invention discloses a technique for flotation of sulfide ore by using liquid carbon dioxide. For sulfide ore flotation, because sulfide ore is easy to crush and over-grind, it is difficult for air bubbles to collide with sulfide ore mineral particles, and the flotation collection effect is not good. The liquid carbon dioxide flotation process is adopted, and the liquid carbon dioxide (1) is passed into the flotation column (3) through the air inlet (4) and the flotation pulp entering the feed port (5) through the pressure reducing valve (2), The carbon dioxide is gasified, and bubbles grow on the surface of the hydrophobic ore particles, and reversely collide with the bubbles generated by the magnetic bubble generator (6) in the flotation column (3) to realize sulfide ore flotation. This method achieves sufficient and uniform mineralization of the pulp in the flotation column, sufficient flotation time, has the advantages of large bubble volume, fine size, uniform dispersion, good flotation collection effect, and no pollution. It can be used in metal mines, chemical industry, fields of environmental protection.
Description
技术领域 technical field
本发明涉及一种将二氧化碳用于硫化矿浮选工艺的方法，特别是指一种将液体二氧化碳通入硫化矿浮选矿浆中，利用磁力气泡发生器产生的气泡，在浮选柱内实现硫化矿浮选的新方法，属于资源综合利用技术领域。The present invention relates to a method for using carbon dioxide in sulfide ore flotation process, in particular to a method of passing liquid carbon dioxide into sulfide ore flotation slurry, using the bubbles generated by a magnetic bubble generator to realize sulfide in the flotation column The invention discloses a new method of ore flotation, which belongs to the technical field of resource comprehensive utilization.
背景技术 Background technique
二氧化碳(CO2)作为一种常见的气体，由于其来源广泛，价格低廉，化学活性非常弱，可以用作保护气体，应用于冶金、化工等技术领域。在硫化矿浮选领域中，二氧化碳本身可以作为浮选药剂用于调整硫化矿浮选矿浆，而且在某些易氧化的硫化矿浮选中，二氧化碳可以用作保护气体，起到隔绝氧气的作用。但是在目前国内外的浮选工艺中，将二氧化碳用于浮选工艺的方法研究很少。As a common gas, carbon dioxide (CO 2 ) can be used as a protective gas due to its wide sources, low price and very weak chemical activity, and it can be used in metallurgy, chemical industry and other technical fields. In the field of sulfide ore flotation, carbon dioxide itself can be used as a flotation agent to adjust the sulfide ore flotation pulp, and in some easily oxidized sulfide ore flotation, carbon dioxide can be used as a protective gas to isolate oxygen . But in the current flotation process at home and abroad, there are few researches on the method of using carbon dioxide for flotation process.
浮选柱作为一种新型高效的浮选设备，将是以后浮选工艺的发展趋势与方向，而浮选柱工艺中急需解决的问题就是矿浆充分矿化的问题。目前一般的浮选柱都是在浮选柱体内部利用发泡器产生的气泡进行矿化，容易导致矿化不均匀，浮选时间不够等影响。而一旦发泡器出现堵塞、磨损等问题，浮选柱的维修就非常麻烦。现在研究发现，液化的气体在气化时，需要有晶核才能产生，将气核效应现象应用于浮选工艺中，是一个具有非常有意义的研究领域。As a new type of efficient flotation equipment, the flotation column will be the development trend and direction of the flotation process in the future, and the problem that needs to be solved urgently in the flotation column process is the problem of sufficient mineralization of the pulp. At present, the general flotation column uses the bubbles generated by the foamer to mineralize inside the flotation column, which may easily lead to uneven mineralization and insufficient flotation time. And once the foamer has problems such as blockage and wear, the maintenance of the flotation column will be very troublesome. It is now found that when liquefied gas is gasified, it needs crystal nuclei to produce. It is a very meaningful research field to apply the phenomenon of gas nuclei effect to the flotation process.
发明内容 Contents of the invention
本发明所要解决的技术问题是提供一种在浮选柱内实现矿浆充分矿化均匀，浮选时间足够的应用液体二氧化碳进行硫化矿浮选的工艺。The technical problem to be solved by the present invention is to provide a process for flotation of sulfide ore by using liquid carbon dioxide in a flotation column to achieve sufficient mineralization and uniformity of ore pulp and sufficient flotation time.
为了解决上述技术问题，本发明提供的应用液体二氧化碳进行硫化矿浮选的工艺，利用液体二氧化碳通过减压阀加入硫化矿浮选矿浆中，在浮选柱内实现硫化矿浮选。In order to solve the above technical problems, the present invention provides a process for flotation of sulfide ore using liquid carbon dioxide, which uses liquid carbon dioxide to add sulfide ore flotation slurry through a pressure reducing valve, and realizes sulfide ore flotation in the flotation column.
液体二氧化碳通过减压阀经过进气口与通过进料口进入的浮选矿浆一起通入浮选柱中，二氧化碳气化，在疏水矿粒表面长出气泡，在浮选柱内与发泡装置产生的气泡进行逆向碰撞，实现硫化矿浮选。Liquid carbon dioxide passes through the air inlet through the pressure reducing valve and passes into the flotation column together with the flotation pulp entering through the feed inlet. The generated bubbles are reversely collided to realize sulfide ore flotation.
所述的发泡装置为磁力气泡发生器。The foaming device is a magnetic bubble generator.
采用上述技术方案的应用液体二氧化碳进行硫化矿浮选的工艺，通过减压阀将液体二氧化碳经过进气口与进料口进入的浮选矿浆一起通入浮选柱中，由于液体二氧化碳在常温、常压下需要气化，气化时必须有气化核心，浮选柱内疏水矿粒正好为二氧化碳的气化提供了晶核，这样二氧化碳在疏水矿粒表面气化，产生二氧化碳微泡，选择性矿化目的矿物。并且在浮选柱内与磁力气泡发生器产生的气泡进行逆向碰撞捕收，实现硫化矿的浮选过程。而且在硫化矿浮选工艺中，由于某些硫化矿极易氧化，且某些硫化矿捕收剂也较为容易氧化，在通入空气浮选时，空气中所含的氧气容易使捕收剂处理后的硫化矿物氧化，恶化浮选捕收效果。而利用二氧化碳进行硫化矿浮选，能够在矿化颗粒表面形成保护气体，隔绝氧气，保证矿化颗粒不被氧化，提高浮选效果。The process of using liquid carbon dioxide to carry out sulfide ore flotation using the above-mentioned technical scheme, through the pressure reducing valve, the liquid carbon dioxide is passed into the flotation column through the air inlet and the flotation slurry entering the feed port. Gasification is required under normal pressure, and there must be a gasification core during gasification. The hydrophobic ore particles in the flotation column just provide crystal nuclei for the gasification of carbon dioxide, so that carbon dioxide gasifies on the surface of the hydrophobic ore particles to produce carbon dioxide microbubbles. mineralization purpose minerals. And in the flotation column, the bubbles generated by the magnetic bubble generator are reversely collided and collected to realize the flotation process of sulfide ore. Moreover, in the sulfide ore flotation process, because some sulfide ores are easily oxidized, and some sulfide ore collectors are also relatively easy to oxidize, when the air is introduced into the flotation process, the oxygen contained in the air will easily make the collector The treated sulfide minerals are oxidized, which deteriorates the collection effect of flotation. The use of carbon dioxide for sulfide ore flotation can form a protective gas on the surface of mineralized particles, isolate oxygen, ensure that mineralized particles are not oxidized, and improve the flotation effect.
综上所述，本发明具有矿化效果非常高、气泡弥散均匀、能耗低、不易堵塞、无污染、强化浮选捕收等优点，可用于金属矿山，化学化工，环境保护等领域。In summary, the present invention has the advantages of very high mineralization effect, uniform bubble dispersion, low energy consumption, no clogging, no pollution, enhanced flotation collection, etc., and can be used in metal mines, chemical engineering, environmental protection and other fields.
附图说明 Description of drawings
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
具体实施方式 Detailed ways
下面结合附图和具体实施方式对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
参见图1，液体二氧化碳1通过减压阀2经过进气口4与通过进料口5进入的浮选矿浆一起通入浮选柱3中，液体二氧化碳1气化，在疏水矿粒表面长出气泡，在浮选柱3内与磁力气泡发生器6产生的气泡进行逆向碰撞，实现硫化矿浮选。Referring to Fig. 1, the liquid carbon dioxide 1 is passed into the
采用本发明的方法，对湖南某硫化矿进行选硫试验。该硫化矿为铅锌浮选后的尾矿，主要矿物为硫铁矿，包括黄铁矿、磁黄铁矿等，脉石矿物主要为碳酸盐与硅酸盐类矿物。浮选时矿浆质量浓度在32～34％，采用乙黄药作为硫化矿捕收剂，充分调浆后与液体二氧化碳1一起通入浮选柱3中，打开磁力气泡发生器6充气进行浮选，通过一粗一精一扫的作业后，能够取得很好的试验结果。具体试验指标如下表：Using the method of the present invention, a sulfur separation test was carried out on a certain sulfide ore in Hunan. The sulfide ore is tailings after lead-zinc flotation, the main minerals are pyrite, including pyrite, pyrrhotite, etc., and the gangue minerals are mainly carbonate and silicate minerals. During flotation, the mass concentration of ore pulp is 32-34%. Ethaxanthate is used as a sulfide ore collector. After fully adjusting the slurry, it is passed into the
表1某硫化矿浮选指标对比Table 1 Comparison of flotation indicators of a certain sulfide ore
精矿硫品位/％ 精矿回收率/％Concentrate Sulfur Grade/% Concentrate Recovery/%
传统工艺 39.61 79.63Traditional Crafts 39.61 79.63
CO2方法 42.15 83.54 CO2 method 42.15 83.54
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| CN102652927A (en) * | 2012-03-21 | 2012-09-05 | 南京银茂铅锌矿业有限公司 | Beneficiation method of iron pyrite in lead-zinc flotation tailings |
| CN103934117B (en) * | 2014-05-07 | 2016-09-07 | 广西中金岭南矿业有限责任公司 | The technique of pneumo type flotation post flotation Lead-zinc mine tailings |
| CN107127204B (en) * | 2016-02-26 | 2019-08-16 | 蒋本基 | Method and system for stabilizing solid waste with different particle sizes |
| CN106669981B (en) * | 2016-06-20 | 2019-04-26 | 中国矿业大学 | A sorting method of oxidized slime based on CO2 bubbles |
| CN106733205A (en) * | 2016-12-11 | 2017-05-31 | 南京银茂铅锌矿业有限公司 | The Efficient beneficiation method of troilite in lead zinc flotation tailing |
| CN108452941B (en) * | 2018-02-07 | 2020-03-10 | 中南大学 | Bauxite flotation method |
| CN116748015B (en) * | 2023-05-31 | 2025-10-31 | 昆明理工大学 | Process for synthesizing chalcopyrite foaming agent by recycling carbon dioxide and application |
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Application publication date: 20100609 Assignee: YUNNAN ZHONGJIN GONGHE RESOURCES CO.,LTD. Assignor: Central South University Contract record no.: 2015430000065 Denomination of invention: Process for performing sulfide ore flotation by using liquid carbon dioxide Granted publication date: 20130213 License type: Exclusive License Record date: 20150605 |
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