Electrochemical study method closer to real mineral floatation

A mineral flotation and electrochemical technology, applied in the direction of material electrochemical variables, scientific instruments, material analysis through electromagnetic means, etc., can solve problems that cannot fully represent the real flotation process

Inactive Publication Date: 2018-01-09
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the research on mineral flotation mechanism adopts electrochemical method. The minerals are made into electrodes, then polished to a flat and smooth surface, and then the electrodes are placed in the electrolyte to test their electrochemical performance (open circuit

Method used

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  • Electrochemical study method closer to real mineral floatation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Making mineral electrodes:

[0019] Cut the massive pyrite into a square column with a length, width and height of 3*3*15mm, and bond a copper wire to the bottom of the columnar pyrite with silver conductive adhesive; it is made of thin aluminum sheet A cylinder with a diameter of 6mm and a height of 15mm, then put the columnar pyrite bonded with the copper wire into the aluminum cylinder, fill the gap in the aluminum cylinder with epoxy resin, and remove it after the epoxy resin is completely cured The aluminum cylinder of the outer layer, promptly makes the spare mineral electrode;

[0020] The filling height of the epoxy resin in the A electrode of the mineral electrode is 3mm, and the exposed height of the columnar pyrite is 12mm; the filling height of the epoxy resin in the B electrode is 15mm, and the exposed height of the columnar pyrite is 0mm;

[0021] (2) Configure the electrolyte:

[0022] Configure a buffer solution with a pH value of 5: Take 13.6 gram...

Embodiment 2

[0030] The steps are the same as in Example 1, except that the size of the massive pyrite cut is changed from "3*3*15mm" to "5*5*20mm", and other conditions remain unchanged. The results are as follows: OCP was tested in a buffer solution with a pH value of 5. When no xanthate was added, the OCP of the B electrode was always in a stable state at 0.17V from 0 to 600 seconds; the OCP of the A electrode started It is much lower than that of the B electrode, and then rises rapidly until it gradually stabilizes after 410 seconds, which is 0.16V. When xanthate was added, the OCP of both A and B electrodes was greatly reduced, and the OCP value of A electrode (-0.08) was lower than that of B electrode (-0.03).

Embodiment 3

[0032] The steps are the same as in Example 1, the OCP experiment time is changed from "0-600 seconds" to "0-400 seconds", and other conditions are unchanged. The results are as follows: OCP was tested in a buffer solution with a pH value of 5. When no xanthate was added, the OCP of the B electrode was always in a stable state at 0.17V during the time from 0 to 400 seconds; the OCP of the A electrode started It is much lower than that of the B electrode, and then rises rapidly, and it is 0.14V in 400 seconds. When xanthate was added, the OCP of both A and B electrodes was greatly reduced, and the OCP value of A electrode (-0.07) was lower than that of B electrode (-0.03).

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Abstract

The invention relates to an electrochemical method for studying a mineral floatation mechanism, in particular to an electrochemical study method closer to real mineral floatation. The method comprisesthe following steps: (1) making mineral electrodes; (2) preparing an electrolyte; (3) carrying out an electrochemical experiment. OCP (open circuit potential) experimental results of electrodes A andB prove that OCP values of the electrodes A and B are quite different, the OCP value of the electrode B is always in a stable state, while the OCP value of the electrode A is much lower than that ofthe electrode B at the beginning, then increases rapidly and finally is stabilized at a certain fixed value. The electrode A is a fresh mineral section and is to experience a continuously oxidized process, while the electrode B is totally oxidized in a polishing period. The electrode A experiment is closer to the real mineral floatation process than the electrode B experiment, and the real floatation mechanism can be explained better by experimental data obtained on the basis of the electrode A, so that study of the mineral floatation mechanism is closer to reality and has practicability.

Description

technical field [0001] The invention relates to an electrochemical method for studying the mechanism of mineral flotation, in particular to an electrochemical research method closer to real mineral flotation. Background technique [0002] Flotation is the main method of mineral separation, which includes six main steps of grinding, dosing, slurry adjustment, air blowing, scraping and drying to achieve mineral separation and enrichment. At present, most of the research on mineral flotation mechanism adopts electrochemical method. The minerals are made into electrodes, then polished to a flat and smooth surface, and then the electrodes are placed in the electrolyte to test their electrochemical performance (open circuit potential OCP, cyclic voltammetry). CV, etc.), this method can obtain many electrochemical parameters, which is very helpful to explain the flotation behavior and mechanism, but this research method can not fully represent the real flotation process, because of...

Claims

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Application Information

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IPC IPC(8): G01N27/416G01N27/30
Inventor 李立清杨丽钦廖春发黄志强王义赵靖华肖焱尹安文娟
Owner JIANGXI UNIV OF SCI & TECH
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