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Lead and zinc sulfide ore in situ electric potential flotation process

A technology of lead-zinc sulfide and sulfide ore, which is applied in flotation, solid separation, etc., can solve the problems of difficult ore particles uniformly meeting the requirements, difficult to stabilize potential, and poor conductivity of ore particles, so as to improve the selectivity of mineral separation and reduce the Medium ore circulation and the effect of increasing the flotation rate

Inactive Publication Date: 2004-11-17
CENT SOUTH UNIV
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  • Application Information

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Problems solved by technology

Traditional potential control flotation uses oxidation-reduction reagents to control the pulp potential. Since flotation is an open system, oxygen in the air is continuously brought in during aerated flotation, which makes the potential difficult to stabilize and consumes a lot of reagents. It is adjusted by external equipment through electrodes. The biggest difficulty in pulp potential is that the highly dispersed ore particles in the flotation system have poor conductivity, and it is difficult to make the ore particles uniformly reach the required electrode potential

Method used

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  • Lead and zinc sulfide ore in situ electric potential flotation process
  • Lead and zinc sulfide ore in situ electric potential flotation process

Examples

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Effect test

Embodiment 1

[0013] The annual processing of raw ore is 1 million tons. The ore is a high-sulfur lead-zinc ore. The sulfide ore is finely distributed and closely related, so it is difficult to sort. The lead-zinc flotation process is as follows: lead is selected first, the lead rapid separation foam product is subjected to secondary selection to obtain lead concentrate 1, the lead fast separation tailings are subjected to secondary coarsening, primary sweep, rough separation foam product is regrinded and refined five times. The lead concentrate 2 is selected, and the lead concentrate 1 and the lead concentrate 2 are combined to obtain the total lead concentrate; the lead tailings are subjected to zinc quick separation for three times to obtain zinc concentrate 1, and the zinc quick separation tailings are subjected to secondary coarsening and two Sweeping and Sijing get zinc concentrate 2, zinc concentrate 1 and zinc concentrate 2 are combined to get total zinc concentrate. Potential-regul...

Embodiment 2

[0020] The medium-sized lead-zinc mine with a daily processing capacity of 900 tons of raw ore is divided into two series of production. Before applying the native potential to regulate the flotation process, the chemical system is: under the natural pH value of the pulp, zinc sulfate (1.1Kg / t) and sodium sulfite (0.7Kg / t) are used as inhibitors of zinc and sulfur, butyl ammonium black drug and Aniline and black drug combination as collector (60g / t) preferentially flotation lead; lead tail selection for zinc use lime as pH adjuster to suppress sulfur, copper sulfate as activator, 310 compound xanthate as collector; zinc tail selection for sulfur Use 310 compound xanthate as collector and RB3 as foaming agent. The lead-zinc flotation process is as follows: two series, lead selection is preferred, the lead quick separation foam product is subjected to one-time selection to obtain lead concentrate 1, the lead quick-selection tailings are subjected to one rough selection, three ti...

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Abstract

The invention is protogenesis potential flotation technology for lead and zinc sulfide. The invention uses the ore pulp protogenesis potential formed in each complex electrochemical reaction as the ore pulp potential criterion of sulfide selectivity floatation separation, the invention uses electrochemical action namely oxide-reduction reaction in ore milling-floatation ore pulp, through adjusting and controlling the ore pulp pH value, capturing agent and floatation time and so on traditional operation parameter, thus adjusts and control the ore pulp potential. The invention can upgrades the separation selectivity of ore; the metal reclaiming rate can reach over 5%; the system processing ability is upgraded to 30%.

Description

technical field [0001] The invention belongs to mineral processing engineering, especially sulfide ore flotation. Background technique [0002] For a long time, the control parameters of the industrial flotation process of sulfide ore are mainly pulp pH value and reagent concentration, which follow the traditional semi-empirical Barsky relationship [OH - ] / [X - ] = k, and did not consider the impact of the pulp potential on the flotation process. With the establishment of the electrochemical theory of sulfide ore flotation, the importance of potential in sulfide ore flotation has been fully recognized. Traditional potential control flotation uses redox reagents to control the pulp potential. Since flotation is an open system, oxygen in the air is continuously brought in during aerated flotation, which makes the potential difficult to stabilize and consumes a lot of reagents. It is adjusted by external equipment through electrodes. The biggest difficulty in pulp potential ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/002
Inventor 王淀佐邱冠周刘如意刘贞德胡岳华顾国华覃文庆徐竟
Owner CENT SOUTH UNIV
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