CN106990156A - The electrochemical test method that Galvanic is acted in sulfide flotation - Google Patents
The electrochemical test method that Galvanic is acted in sulfide flotation Download PDFInfo
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- CN106990156A CN106990156A CN201710425805.4A CN201710425805A CN106990156A CN 106990156 A CN106990156 A CN 106990156A CN 201710425805 A CN201710425805 A CN 201710425805A CN 106990156 A CN106990156 A CN 106990156A
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Abstract
The electrochemical test method that Galvanic is acted in a kind of sulfide flotation, comprises the following steps：(1) prepare mineral block electrode and cut from the sample ore of high-purity and obtain mineral block electrode, mineral or milling medium block are all uniformly cut into diameter and thickness all identical cylinders, ensure that all pieces of electrodes have identical surface area, (2) connection electrode is tested using electrochemical workstation, tested by using the first different mineral block electrodes with the second mineral block electrode, obtain when Galvanic effect not occurring and occur the Electrochemical results that mineral are tested after Galvanic effect.It can directly reflect Galvanic effect to anode and the Different Effects of the oxidation of negative electrode mineral surfaces and xanthate absorption from test result using the present invention.
Description
Technical field
The present invention relates between a kind of sulphide ore Galvanic act on electrochemical test method, it is adaptable to test sulphide ore it
Between occur the influence of Galvanic effect respectively to the electrochemical properties and medicament adsorption capacity of negative electrode or anode mineral.
Background technology
One of main method that electrochemical test method is used when being the Galvanic effect of research sulphide ore.However, traditional
Galvanic effect electro-chemical test uses mixed mineral electrode, can only obtain the test result of mixed mineral, it is impossible to directly obtain
Obtain the independent influence of Galvanic effect respectively on negative electrode or anode mineral.The milling medium that sulfide mineral and flotation are used has
Different rest potentials, the oxidation that electro transfer causes surface charge to redistribute influence mineral can be produced by being contacted with each other between them
And flotation is reclaimed, it is however generally that, electronics is transferred to negative electrode mineral from anode mineral when occurring Galvanic effect, anode mineral by
To galvanic corrosion and negative electrode mineral by electrochemical protection.Also, the strong mineral of electro-chemical activity can be floated in Galvanic effect
Property may be strengthened, and electro-chemical activity difference mineral Galvanic effect in floatability may be suppressed.So,
The effect of research Galvanic is particularly significant to negative electrode mineral and the influence of anode mineral surfaces property and adsorption capacity respectively in detail, can
With deeper into understand Galvanic effect to sulphide ore aoxidize and flotation influence.
The content of the invention
, can be directly perceived it is an object of the invention to provide the electrochemical test method that Galvanic between a kind of sulphide ore is acted on
The effect of ground research Galvanic is to anode and the Different Effects of the oxidation of negative electrode mineral surfaces and xanthate absorption.
The present invention is achieved through the following technical solutions above-mentioned purpose：The electricity that Galvanic is acted in a kind of research sulfide flotation
Test chemical method, comprises the following steps：
(1) mineral block electrode is prepared
Cutting obtains mineral block electrode from the sample ore of high-purity, and mineral or milling medium block are all uniformly cut into diameter
With thickness all identical cylinders, it is ensured that all pieces of electrodes have identical surface area,
(2) preparation before testing
First, using alumina powder polishing mineral block electrode so that mineral block electrode exposes the mineral of fresh cleaning
Surface；Secondly, the electrode 1 polished is connected with electrode 2 by copper wire wire, 30min is soaked in solution to be tested, then
Soaked electrode is measured,
(3) tested using electrochemical workstation
During test, the first mineral block electrode is connected together with the second mineral block electrode using copper wire wire, wherein, the
One mineral block electrode is connected with calomel electrode platinum electrode as tested electrode and soaked in the solution, the second mineral block electrode conduct
The electrode for producing Galvanic effect is connected and is positioned over outside solution with copper wire wire with the first mineral block electrode, in test, the
One mineral block electrode is tested with the second mineral block electrode using same mineral, and test result does not occur as this kind of mineral
Experimental result when Galvanic is acted on, to be contrasted with occurring the test result under Galvanic effect, to eliminate the first ore deposit
Thing block electrode connects together the additional effect for being possible to cause to test result with the second mineral block electrode.
The prominent advantage of the present invention is：Directly can reflect from test result Galvanic effect to anode and
The Different Effects that negative electrode mineral surfaces are aoxidized and xanthate is adsorbed.
Brief description of the drawings
Fig. 1 is the electrochemical test method schematic diagram of Galvanic effect in sulfide flotation of the present invention.(a) it is survey
Prepare before examination, (b) is in test.
Marked in figure：Working electrode 1, calomel electrode 2, platinum electrode 3, the first mineral block electrode 4, the second mineral block electrode
5th, copper wire 6, resin 7, silver brazing 8, mineral block 9, solution 10.
When Fig. 2 is pH value 9.18, pyrite, galena, chalcopyrite opening when not occurring and occurring Galvanic effect
Road potential schematic diagram.Marked in figure：Pyrite (pyrite) 1, pyrite (galena) 2, galena (pyrite) 3, square lead
Ore deposit (galena) 4
When Fig. 3 is that pH value 9.18, butyl xanthate concentration are 0.01mol/L, galena block electrode and pyrite do not occur with
And there occurs Galvanic effect when cyclic voltammetry curve schematic diagram.Marked in figure：Galena (galena) 1, galena are (yellow
Iron ore) 2.
Embodiment
Technical scheme is described further by the following examples.
Embodiment 1
The present embodiment is that the electrochemical test method of Galvanic effect in sulfide flotation of the present invention is in pH value
When 9.18, pyrite, galena, the application of open circuit potential of the chalcopyrite when not occurring and occurring Galvanic effect are tested
Example, comprises the following steps：
1) the mineral block electrode property of test：Test the galena used and be derived from Guangxi Wuzhou with pyrite, chalcopyrite takes
It is prepared by the mineral for selecting high-purity in ore from Guilin.The chemical composition of mineral samplers is as shown in table 1.Side
It is the cylindric of 0.3cm that lead ore is cut into a diameter of 0.55cm thickness with pyrite minal, for preparing galena and Huang
Iron ore block electrode, to ensure that all mineral block electrodes have identical mineral surface area 0.24cm2。
The chemical composition of the mineral samplers of table 1
2) operating procedure：
1. chalcopyrite, galena, Pyrite Mineral block electrode are prepared.Mineral block electrode is by mineral, copper wire wire, resin with
And silver soldering connects thing composition, structure is as shown in Figure 1；Configure the solution that pH is 9.18.
2. pyrite is connected together with galena electrode using copper wire wire, wherein, pyrite electrode is as tested
Electrode is connected with calomel electrode, platinum electrode and soaked in the solution, and galena electrode leads to as the electrode for producing Galvanic effect
Cross copper wire wire to be connected and be positioned over outside solution with pyrite electrode, measure open circuit potential using electrochemical workstation, obtain
The test result of the open circuit potential of pyrite when Galvanic is acted on occurs with pyrite for galena.
3. two pyrite are connected together using copper wire wire, one of pyrite electrode as tested electrode with
Calomel electrode platinum electrode is connected and soaked in the solution, and another pyrite electrode is then as the electrode for occurring Galvanic effect
It is connected and is positioned over outside solution with pyrite electrode by copper wire wire, measures open circuit potential using electrochemical workstation, obtain
The test result of open circuit potential when not occurring Galvanic effect to pyrite.Pyrite when Galvanic effect not occurring is opened
Road potential test result with and galena occur the open circuit potential test result of pyrite under Galvanic effect and contrasted, with
Eliminate and the first mineral block electrode 4 (being used to test) and the second mineral block electrode 5 (being used to produce Galvanic effect) are connected to one
Act the additional effect for being possible to cause test result.
4. repeat 2. with 3. experimentation, obtain pH value for 9.18 when, pyrite is not occurring and occurred with galena
Open circuit potential when Galvanic is acted on, as a result as shown in Figure 2.By Fig. 2 it can be seen that, when pH value be 9.18 when, no matter occur also
It is that Galvanic effect does not occur, the OCP of pyrite will be higher than the OCP of galena.Also, generation Galvanic is made
With rear, the electrode potential of mineral surfaces generates significant change.For pyrite surface, occurs Galvanic with galena
OCP is substantially reduced after effect；For galena, occur OCP after Galvanic effect with pyrite and carried
It is high.
Embodiment 2
The present embodiment is that the electrochemical test method of Galvanic effect in sulfide flotation of the present invention is in pH value
9.18, butyl xanthate concentration is 0.01mol/L, and test, which obtains galena block electrode, not to be occurred with pyrite and there occurs that gal is cut down
The another application example of cyclic voltammetry curve when Buddhist nun acts on.
1) mineral block electrode property is tested：Test the galena used and be derived from Guangxi Wuzhou with pyrite, select in ore
It is prepared by the mineral of high-purity.The chemical composition of mineral samplers is as shown in table 1.Galena is cut into pyrite minal
A diameter of 0.55cm thickness is cylindric for 0.3cm's, for preparing galena and lump pyrite electrode, to ensure all mineral blocks
Electrode has identical mineral surface area 0.24cm2。
2) operating procedure：
1. galena and Pyrite Mineral block electrode are prepared.Mineral block electrode is by mineral, copper wire wire, resin and silver soldering
Thing composition is connect, structure is as shown in Figure 1；It is 9.18 to configure pH, and butyl xanthate concentration is 0.01mol/L solution.
2. pyrite is connected together with galena electrode using copper wire wire.Wherein, galena electrode is as tested
Electrode is connected and soaked in the solution with calomel electrode platinum electrode, and pyrite electrode is then as the electrode for occurring Galvanic effect
It is connected and is positioned over outside solution with copper wire wire with pyrite electrode.Cyclic voltammetry curve is measured using electrochemical workstation,
It is 9.18 to obtain pH value, when with pyrite Galvanic effect occurs for galena block electrode when butyl xanthate concentration is 0.01mol/L
Curve 2 in the cyclic voltammetry curve of galena, i.e. Fig. 3.
3. two galenas are connected together using copper wire wire.One of galena electrode as tested electrode with
Calomel electrode platinum electrode is connected and soaked in the solution, and another galena electrode is then as the electrode for occurring Galvanic effect
It is connected and is positioned over outside solution with copper wire wire with galena electrode.Cyclic voltammetry curve is measured using electrochemical workstation,
It is 9.18 to obtain the test result of galena and galena, i.e. pH value, and galena is independent when butyl xanthate concentration is 0.01mol/L
In the presence of galena cyclic voltammetry curve, i.e. curve 1 in Fig. 3.
As seen from Figure 3, two oxidation peaks after Galvanic effect on the cyclic voltammetry curve of galena occur with pyrite
Intensity all significantly enhance, and all there occurs compared to the original position of two oxidation peaks when Galvanic effect not occurring
Negative to move, these results show that occurring Galvanic effect with pyrite promotes absorption of the xanthate on galena surface.
Claims (1)
1. the electrochemical test method that Galvanic is acted in a kind of sulfide flotation, it is characterised in that comprise the following steps：
(1) mineral block electrode is prepared
Cutting obtains mineral block electrode from the sample ore of high-purity, and mineral or milling medium block are all uniformly cut into diameter and thickness
Degree all identical cylinders, it is ensured that all pieces of electrodes have identical surface area,
(2) preparation before testing
First, using alumina powder polishing mineral block electrode so that mineral block electrode exposes the mineral surfaces of fresh cleaning；
Secondly, the electrode 1 polished is connected with electrode 2 by copper wire wire, 30min is soaked in solution to be tested, then to leaching
The electrode soaked is measured,
(3) tested using electrochemical workstation
During test, the first mineral block electrode is connected together with the second mineral block electrode using copper wire wire, wherein, the first ore deposit
Thing block electrode is connected with calomel electrode platinum electrode as tested electrode and soaked in the solution, and the second mineral block electrode is used as generation
The electrode of Galvanic effect is connected and is positioned over outside solution with copper wire wire with the first mineral block electrode, in test, the first ore deposit
Thing block electrode is tested with the second mineral block electrode using same mineral, and gal does not occur as this kind of mineral and cuts down for test result
Experimental result when Buddhist nun acts on, to be contrasted with occurring the test result under Galvanic effect, to eliminate the first mineral block
Electrode connects together the additional effect for being possible to cause to test result with the second mineral block electrode.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561146A (en) * | 2017-08-15 | 2018-01-09 | 江西理工大学 | A kind of electrochemical research method closer to true mineral floating |
| CN113030224A (en) * | 2021-03-08 | 2021-06-25 | 昆明理工大学 | Electrochemical performance test method of lead alloy electrode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210978A (en) * | 1998-08-25 | 1999-03-17 | 北京矿冶研究总院 | Electrochemical detection control method for beneficiation reagent |
| US6309533B1 (en) * | 1997-03-24 | 2001-10-30 | Enpar Technologies Inc. | Removal of oxygen from water |
| CN100344775C (en) * | 2002-12-31 | 2007-10-24 | 英泰克有限公司 | Recovering metals from sulfidic materials |
| CN104321146A (en) * | 2012-05-10 | 2015-01-28 | 奥图泰(芬兰)公司 | Method and apparatus for controlling the flotation process of pyrite - containing sulphide ores |
-
2017
- 2017-06-08 CN CN201710425805.4A patent/CN106990156B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6309533B1 (en) * | 1997-03-24 | 2001-10-30 | Enpar Technologies Inc. | Removal of oxygen from water |
| CN1210978A (en) * | 1998-08-25 | 1999-03-17 | 北京矿冶研究总院 | Electrochemical detection control method for beneficiation reagent |
| CN100344775C (en) * | 2002-12-31 | 2007-10-24 | 英泰克有限公司 | Recovering metals from sulfidic materials |
| CN104321146A (en) * | 2012-05-10 | 2015-01-28 | 奥图泰(芬兰)公司 | Method and apparatus for controlling the flotation process of pyrite - containing sulphide ores |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561146A (en) * | 2017-08-15 | 2018-01-09 | 江西理工大学 | A kind of electrochemical research method closer to true mineral floating |
| CN113030224A (en) * | 2021-03-08 | 2021-06-25 | 昆明理工大学 | Electrochemical performance test method of lead alloy electrode |
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| CN106990156B (en) | 2019-04-09 |
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