CN1058548A - Pyrite and mispickel method for electrochemical floatation - Google Patents
Pyrite and mispickel method for electrochemical floatation Download PDFInfo
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- CN1058548A CN1058548A CN 90105502 CN90105502A CN1058548A CN 1058548 A CN1058548 A CN 1058548A CN 90105502 CN90105502 CN 90105502 CN 90105502 A CN90105502 A CN 90105502A CN 1058548 A CN1058548 A CN 1058548A
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- mispickel
- pyrite
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Abstract
A kind of pyrite and mispickel method for electrochemical floatation are to utilize external electric field control pulp potential to adjust ore pulp and add sodium carbonate under oxidizing potential to adjust agent, add collecting agent and foaming agent again, and flotation pyrite, inhibition mispickel are realized separating.Method of the present invention sorts flow process simple (one roughing, primary cleaning, once purging selection), operation is simple and reliable, the time of sizing mixing is short, can reduce floating agent consumption, separation index height, good separation effect.
Description
The present invention relates to a kind of method for floating of separating mineral.
The crystallizable mineral structure of pyrite and mispickel is similar, and floatability is close, with conventional floatation sorting difficulty, is a difficult problem anxious to be solved in the current flotation technology.Existing technology is to utilize the oxidation rate of these two kinds of mineral in ore pulp different with oxidation product, causes that the difference of floatability realizes.Normally adopt and in ore pulp, add oxidant (for example bleaching powder, potassium permanganate etc.) or the ore pulp of heating and improve mispickel surface oxidation speed and be suppressed, then flotation pyrite and be able to sorting.For example for a kind of mispickel-pyrite bulk concentrate of selecting successively behind lead, the zinc concentrate, its ore pulp added bleaching powder and inflation stirring after 90 minutes, make collecting agent with butyl xanthate, employing one roughing, the flotation flowsheet that secondary is scanned, four times selected are carried out sorting, when give ore deposit grade sulfur-bearing 41.6%, when containing arsenic 8.1%, can obtain sulfur-bearing 48.6%, contain the sulphur ore of arsenic 1.7%.The major defect of this method is that mixing time is long, and it is still high to contain arsenic in the sulphur ore, and mispickel and pyritous separating effect are not good.Can shorten mixing time though heat, uneconomical.
The objective of the invention is to improve the separating effect and the efficient of pyrite and mispickel.
The solution of the present invention is in the sizing mixing in advance of flotation pulp, use asymmetric metal electrode, under the External Electrical Field that direct current produces, control pulp potential (Eh) is at oxidizing potential, add sodium carbonate and adjust agent, add collecting agent and foaming agent flotation pyrite then, suppress mispickel, realize FLOTATION SEPARATION.
The negative electrode of electrode is 5 with the ratio of anode effective area: 1-15: 1; Electrode material can be used platinum, copper, iron, stainless steel etc.; Electrode shape is plate, pipe etc., can offer through flow hole in case of necessity or use mesh electrode.Pulp potential (Eh) is controlled at the 250-850mv(applied voltage generally in the 5-30v scope); Adjusting the ore pulp time is 10-40 minute; The sodium carbonate addition is 0.5-5.5kg/T; Make collecting agent with butyl xanthate; Make foaming agent with 2# oil (terpenic oil).
Method of the present invention makes the mineral that floated with repressed mineral surfaces different redox reactions take place in ore pulp, generates different products, thereby realizes the sorting of these two kinds of mineral.
Method of the present invention compared with prior art, method is simple and reliable; Can reduce floating agent consumption, shorten and size mixing the time, favorable economic benefit is arranged; Flow process is simple, efficiency of separation height.
Fig. 1 is the principle flow chart of the inventive method;
Fig. 2 is the another kind of principle flow chart of the inventive method.
Embodiment 1. contains arsenic 3.94%(weight), sulfur-bearing 39.12%(weight) mispickel-pyrite bulk concentrate.Make electrode with corrosion resistant plate, the about 0.9m of negative electrode effective area
2, with the ratio of anode effective area be 12: 1; Applied voltage 8v, initial pulp potential (Eh) is 300mv; Sized mixing in surge tank 36 minutes, the sodium carbonate addition is that 4.3kg/T(adds 1.2kg/T in addition in selected); During flotation, collecting agent is roughly selected 230g/T with butyl xanthate 370g/T(, selected 90g/T, scan 50g/T), foaming agent 2# oil 30g/T, the flow process of returning through one roughing, once purging selection and primary cleaning, chats (as Fig. 1) sorts, handled the ore deposit amount 40kg/ hour, the sulphur ore sulfur-bearing 51.62% that obtains contains arsenic 0.55%, sulfur recovery rate 80.78%.
2. couples of embodiment are a kind of to select mispickel-pyrite bulk concentrate behind lead, the zinc concentrate in advance successively, contains arsenic 3.64%(weight), sulfur-bearing 37.90%(weight).Make electrode with copper coin, negative electrode is 10: 1 with the ratio of anode effective area; Applied voltage 20v, using the initial pulp potential (Eh) of potentiometer measurement is 825mv; Sized mixing 10 minutes; Add sodium carbonate 0.5kg/T(and in selected, add 0.5kg/T in addition); Collecting agent is roughly selected 67g/T with butyl xanthate 120g/T(, and selected 20g/T scans 33g/T), foaming agent is with 2# oil 30g/T; The flow process of returning through one roughing, once purging selection and primary cleaning, chats (as Fig. 2) sorts, and the sulphur ore sulfur-bearing 49.88% of acquisition contains arsenic 1.02%, sulfur recovery rate 81.93%.
Claims (5)
1, a kind of pyrite and mispickel method for electrochemical floatation, comprise size mixing, roughly select, selected, to scan the step poly-, flotation pyrite, suppresses mispickel, it is characterized in that, apply external electric field with asymmetric metal electrode when sizing mixing, the control pulp potential is the oxidizing potential of 250-850mv; And the sodium carbonate that adds 0.5-5.5kg/T adjusts agent.
2, method according to claim 1 is characterized in that, the ratio of the moon/positive electrode area is 5: 1-15: 1.
3, method according to claim 1 and 2 is characterized in that, described electrode is a mesh electrode.
4, method according to claim 1 and 2 is characterized in that, described electrode is plate or the pipe that has through flow hole.
5, method according to claim 1 and 2 is characterized in that, the time of sizing mixing is 10-40 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105502 CN1020178C (en) | 1990-07-21 | 1990-07-21 | Method for electrochemical floatation of pyrite and arsenopyrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105502 CN1020178C (en) | 1990-07-21 | 1990-07-21 | Method for electrochemical floatation of pyrite and arsenopyrite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1058548A true CN1058548A (en) | 1992-02-12 |
| CN1020178C CN1020178C (en) | 1993-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105502 Expired - Fee Related CN1020178C (en) | 1990-07-21 | 1990-07-21 | Method for electrochemical floatation of pyrite and arsenopyrite |
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| Country | Link |
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| CN (1) | CN1020178C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844108A (en) * | 2010-04-13 | 2010-09-29 | 中南大学 | Floatation separation method for pyrites from arsenopyrites |
| CN103757198B (en) * | 2014-01-27 | 2015-06-17 | 紫金矿业集团股份有限公司 | Method for extracting high-purity pyrite and arsenopyrite from carlin-type gold deposit |
| CN106076647A (en) * | 2016-06-20 | 2016-11-09 | 武汉理工大学 | Utilize the method for magnetic iron ore in combination medicament activation and flotation iron ore concentrate |
| CN108296026A (en) * | 2017-12-28 | 2018-07-20 | 三明学院 | A kind of low zinc high type difficulty of lead selects the method for floating of Pb-Zn deposits |
| CN110256079A (en) * | 2019-06-26 | 2019-09-20 | 中国科学院地球化学研究所 | A kind of preparation method of high-purity compact mispickel electrode |
-
1990
- 1990-07-21 CN CN 90105502 patent/CN1020178C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844108A (en) * | 2010-04-13 | 2010-09-29 | 中南大学 | Floatation separation method for pyrites from arsenopyrites |
| CN101844108B (en) * | 2010-04-13 | 2013-03-20 | 中南大学 | Floatation separation method for pyrites from arsenopyrites |
| CN103757198B (en) * | 2014-01-27 | 2015-06-17 | 紫金矿业集团股份有限公司 | Method for extracting high-purity pyrite and arsenopyrite from carlin-type gold deposit |
| CN106076647A (en) * | 2016-06-20 | 2016-11-09 | 武汉理工大学 | Utilize the method for magnetic iron ore in combination medicament activation and flotation iron ore concentrate |
| CN106076647B (en) * | 2016-06-20 | 2019-11-26 | 武汉理工大学 | Utilize the method for magnetic iron ore in combination medicament activation and flotation iron ore concentrate |
| CN108296026A (en) * | 2017-12-28 | 2018-07-20 | 三明学院 | A kind of low zinc high type difficulty of lead selects the method for floating of Pb-Zn deposits |
| CN108296026B (en) * | 2017-12-28 | 2020-04-10 | 三明学院 | Flotation method for lead-low-zinc high-type refractory lead-zinc ore |
| CN110256079A (en) * | 2019-06-26 | 2019-09-20 | 中国科学院地球化学研究所 | A kind of preparation method of high-purity compact mispickel electrode |
| CN110256079B (en) * | 2019-06-26 | 2021-01-26 | 中国科学院地球化学研究所 | Preparation method of high-purity compact arsenopyrite electrode |
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| Publication number | Publication date |
|---|---|
| CN1020178C (en) | 1993-03-31 |
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