Method for improving gold mine flotation and flotation concentrate cyaniding leaching recovery rate

A technology of flotation concentrate and recovery rate, which is applied in flotation, solid separation, etc., can solve the problems of lower grade and higher gold cost in concentrators, and achieve the effect of improving flotation recovery rate and making full use of it

Inactive Publication Date: 2013-04-10
QINGDAO PINGDU JIUDIAN GOLD MINE
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Problems solved by technology

However, the development and utilization of low-grade resources and the reduction of the selected grade of the concentrator will inevitably lead to changes in a series of technical and economic indicators such as the recovery rate of ore dressing, ore dressing ratio, and directly lead to an increase in the cost of gold.

Method used

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  • Method for improving gold mine flotation and flotation concentrate cyaniding leaching recovery rate
  • Method for improving gold mine flotation and flotation concentrate cyaniding leaching recovery rate

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Embodiment

[0012] refer to Figure 1-Figure 2 , the gold ore flotation described in the method for improving gold ore flotation and flotation concentrate cyanidation leaching recovery rate of the present embodiment, the raw ore after the crushing is carried out two stages of ore grinding after ball mill grinding and classifier classification, after that The flotation operation adopts primary roughing, secondary beneficiation, and secondary sweeping to select the concentrate and discard the tailings. The concentrate is concentrated by a single-layer thickener and then filtered by a filter to obtain the final gold concentrate powder. When the ore is ground by ball mill, graded by classifier and roughed in three flotation operations, hot water is added, and the temperature of the hot water is 35-45 °C.

[0013] In the cyanidation leaching of the flotation concentrate, the final gold concentrate powder obtained by flotation is subjected to cyanidation leaching. After the gold concentrate pow...

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Abstract

The invention discloses a method for improving gold mine flotation and flotation concentrate cyaniding leaching recovery rate. In gold mine flotation, when a gold mine is subjected to three flotation operations, i.e. the gold mine is milled through a ball mill, is classified through a classifier and is roughly floated, hot water is added, and the hot water temperature is 35-45 DEG C; in flotation concentrate cyaniding leaching, by a cyaniding leaching process, heating is performed in a single-layer thickener and a three-layer thickener, so that the temperature of cyaniding process water is 25-35 DEG C; the average temperature of the flotation process water in the prior art is 22 DEG C; average flotation tailings grade is 0.22g / t; after heat energy is utilized, the average flotation tailings grade is 0.1g / t; in gold concentrate powder cyaniding, before the heat energy is utilized, the average cyanide residue grade is 0.6g / t; and after the heat energy is utilized, the average cyanide residue grade is 0.4g / t. With the adoption of the heat energy, the gold mine flotation and flotation concentrate cyaniding leaching recovery rate is effectively improved, and gold mine resources are sufficiently utilized.

Description

technical field [0001] The invention belongs to the technical field of gold ore beneficiation, and in particular relates to a method for improving the recovery rate of gold ore flotation and cyanidation leaching of flotation refined gold ore by using heat energy. Background technique [0002] With the increasing demand for gold in industrial production and people's life, there are fewer and fewer high-grade and easy-to-mine gold resources, and the development and utilization of low-grade resources has become an inevitable choice for mining companies, which is beneficial to increasing the mine's available resources. It is of great significance to improve resource reserves, extend mine service life, and improve economic benefits. However, the development and utilization of low-grade resources and the reduction of the selection grade of the ore dressing plant will inevitably lead to changes in a series of technical and economic indicators such as the recovery rate of ore dressi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 张建华
Owner QINGDAO PINGDU JIUDIAN GOLD MINE
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