Method for improving molybdenum concentrate recovery rate during copper-molybdenum separation of low-grade high-argillization skarn ore

A skarn copper-molybdenum, low-grade technology, applied in the field of improving the recovery rate of copper-molybdenum separation molybdenum concentrate from skarn copper-molybdenum ore, can solve the problem of low molybdenum recovery rate

Inactive Publication Date: 2018-05-01
CHANGCHUN GOLD RES INST
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  • Abstract
  • Description
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Problems solved by technology

[0032] The invention provides a method for improving the recovery rate of copper-molybdenum separation molybdenum concentrate of low-grade high-mud skarn ore, so a...

Method used

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  • Method for improving molybdenum concentrate recovery rate during copper-molybdenum separation of low-grade high-argillization skarn ore
  • Method for improving molybdenum concentrate recovery rate during copper-molybdenum separation of low-grade high-argillization skarn ore
  • Method for improving molybdenum concentrate recovery rate during copper-molybdenum separation of low-grade high-argillization skarn ore

Examples

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Embodiment 1

[0048] Include the following steps:

[0049] (1) Pre-tailing operation of mixed concentrate:

[0050] For low-grade high-mud skarn copper-molybdenum ore, which contains low molybdenum grade and gangue minerals are easy to muddy, in order to eliminate the influence of fine-grained gangue minerals on the subsequent separation and flotation of copper and molybdenum, a tailing is removed in advance. That is, copper concentrate, throwing away part of the fine-grained gangue in advance to enrich the molybdenum grade in the copper-molybdenum mixed concentrate, and adjusting the mass percentage concentration of the mixed concentrate slurry produced by the ore-copper-molybdenum mixed concentrate to 10%; Pre-selection and tailing roughing operation: add 1450g / t of sodium silicate mixed concentrate, 3900g / t of sodium hydrosulfide mixed concentrate, 90g / t of kerosene mixed concentrate to the slurry, stir for 4 minutes, flotation time of 6 minutes, foam Enter the copper-molybdenum separat...

Embodiment 2

[0058] Include the following steps:

[0059] (1) Pre-tailing operation of mixed concentrate:

[0060]For low-grade high-mud skarn copper-molybdenum ore, which contains low molybdenum grade and gangue minerals are easy to muddy, in order to eliminate the influence of fine-grained gangue minerals on the subsequent separation and flotation of copper and molybdenum, a tailing is removed in advance. That is, copper concentrate, throwing away part of the fine-grained gangue in advance to enrich the molybdenum grade in the copper-molybdenum mixed concentrate, and adjusting the mass percentage concentration of the mixed concentrate slurry produced by the ore-copper-molybdenum mixed concentrate to 11%; Pre-selection tailing roughing operation: Add 1500g / t mixed concentrate of water glass, 4000g / t mixed concentrate of sodium hydrogen sulfide, 100g / t kerosene mixed concentrate to the pulp, stir for 5 minutes, flotation time is 7 minutes, foam Enter the copper and molybdenum separation r...

Embodiment 3

[0068] Include the following steps:

[0069] (1) Pre-tailing operation of mixed concentrate:

[0070] For low-grade high-mud skarn copper-molybdenum ore, which contains low molybdenum grade and gangue minerals are easy to muddy, in order to eliminate the influence of fine-grained gangue minerals on the subsequent separation and flotation of copper and molybdenum, a tailing is removed in advance. That is, copper concentrate, throwing away part of the fine-grained gangue in advance, so that the molybdenum grade in the copper-molybdenum mixed concentrate can be enriched, and the mass percentage concentration of the mixed concentrate slurry produced by the copper-molybdenum mixed concentrate output is adjusted to 12%; Pre-selection and tailing roughing operation: add 1550g / t of sodium silicate mixed concentrate, 4100g / t of sodium hydrosulfide mixed concentrate, 110g / t of kerosene mixed concentrate to the slurry, stir for 6 minutes, flotation time of 8 minutes, foam Enter the copp...

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Abstract

The invention relates to a method for improving the molybdenum concentrate recovery rate during copper-molybdenum separation of low-grade high-argillization skarn ore, and belongs to methods for separating molybdenum concentrate from copper-molybdenum ore of the skarn ore during copper-molybdenum separation. The method comprises the steps of beforehand tailing discarding operation of mixed concentrate, rough selection operation of copper-molybdenum separation, rough concentrate re-grinding operation, and molybdenum fine selection operation after re-grinding operation of molybdenum rough concentrate. According to the method for improving the molybdenum concentrate recovery rate during copper-molybdenum separation of the low-grade high-argillization skarn ore, the copper-molybdenum separation operation process is smooth, the molybdenum recovery rate is improved, and the problem that the molybdenum recovery rate is low after the molybdenum concentrate is subjected to repeated fine selection during molybdenum concentrate separation of copper-molybdenum separation of the copper-molybdenum mixed concentrate is solved; and the mixed concentrate is subjected to beforehand tailing discarding operation, and copper concentrate is returned to the beforehand tailing discarding operation again, so that the recovery rate of the molybdenum concentrate is greatly improved.

Description

technical field [0001] The invention relates to a method for improving the recovery rate of copper-molybdenum concentrate from skarn copper-molybdenum ore, in particular to the pre-tailing operation of copper-molybdenum mixed concentrate, the return of copper concentrate to the pre-tailing operation, and the regrinding of rough molybdenum concentrate method. Background technique [0002] At present, there are mainly two schemes for the separation of copper-molybdenum mixed concentrate at home and abroad: ① Suppression of copper and floating molybdenum, that is, suppression of copper sulfide and other sulfide minerals, and flotation of molybdenite. ②Suppression of molybdenum and floating copper, that is, suppression of molybdenite and flotation of copper sulfide. No matter which method is used, it is necessary to destroy or remove the residual agent on the surface of the mixed concentrate. The properties of mineral surfaces are changed by chemical agents or heating to chang...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 张磊赵明福宋超孙东阳于鸿宾郑晔郝福来高金昌
Owner CHANGCHUN GOLD RES INST
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