Column-machine combined separation method of difficultly-separated low-grade copper-molybdenum ore

A separation method and low-grade technology, applied in solid separation, flotation and other directions, can solve the problems of low recovery rate of molybdenum, high power consumption and long process flow

Inactive Publication Date: 2012-08-15
BAIYIN NONFERROUS GROUP
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  • Abstract
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Problems solved by technology

[0012] Through the results in Table 3, it can be seen that in the case of raw ore containing 0.53% copper and 0.038% molybdenum, the copper concentrate containing 0.21% molybdenum and a grade of 20.34% can be obtained. Molybdenum concentrate containing 2.23% copper and 43.56% grade; the recovery rate of copper can reach 90.26%, and the recovery rate of molybdenum is 43.03%; the grade of molybdenum concentrate is low and contains high copper, the recovery rate of molybdenum is low, and the consumption of chemicals is high Large, complex sorting process, long process, high power consumption, and difficult operation; low sorting efficiency, poor recovery capacity, poor production stability, and unable to achieve industrial sustainable production; and various indicators are difficult to design requirements; the design indicators are : Molybdenum concentrate grade 45% contains copper less than 0.6%, copper recovery rate 91%, molybdenum recovery rate 60%

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  • Column-machine combined separation method of difficultly-separated low-grade copper-molybdenum ore
  • Column-machine combined separation method of difficultly-separated low-grade copper-molybdenum ore
  • Column-machine combined separation method of difficultly-separated low-grade copper-molybdenum ore

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Embodiment Construction

[0037] refer to figure 1 , a column-machine combined separation method for refractory low-grade copper-molybdenum ore. The process of the method is: two closed-circuit grinding-mixed flotation, one roughing, one sweeping, one beneficiation-mixed fine Ore regrinding-separation of copper suppression and floating molybdenum, adopts roughing, one-time sweeping, three times of concentration I, concentration II, and concentration III; during the whole process, the joint operation of flotation column and flotation machine is used; specific steps as follows:

[0038] One or two closed-circuit grinding:

[0039] ①. Grinding to -200 mesh before mixed flotation accounts for 70%, 72%, 74%, 76%, 78% or 80%, adding 500, 600, 700, 800, 900 or 1000 g / ton of water glass; effectively activate the refractory low-grade copper-molybdenum ore and the ore slime in the dispersive mixed flotation process; wherein the grinding overflow concentration is 36%, 38% or 40%;

[0040] ②, add lime 800, 900...

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Abstract

The invention relates to a column-machine combined separation method of difficultly-separated low-grade copper-molybdenum ore. The difficultly-separated low-grade copper-molybdenum ore is skarn-type copper mine of associated molybdenum ore in China. The method comprises the following process flows: twice closed circuit grinding, bulk flotation, primary roughing, secondary scavenging and primary selecting, bulk concentrate regrinding, copper inhibition and float molybdenum separation, wherein roughing, primary scavenging and three-time selecting namely selecting I, selecting II and selecting III are adopted. In the whole process, a flotation column and a flotation machine are used for joint operation. According to the invention, high concentrate product can be obtained, the ore dressing recovery percentage is improved, the process is simple and the cost is relatively low.

Description

technical field [0001] The invention relates to the technical field of ore dressing production, in particular to the technical field of copper-molybdenum sorting and copper-molybdenum separation, in particular to a column machine combined copper-molybdenum sorting and copper-molybdenum separation method for skarn-type copper mines associated with molybdenum in my country. Background technique [0002] The Suoerkuduke copper deposit in Fuyun County, Xinjiang is a typical skarn-type copper deposit associated with molybdenum in my country. The natural type of ore is mostly sparsely disseminated chalcopyrite, followed by sparsely disseminated chalcopyrite containing molybdenite. Mine ore. Most of the ores are molybdenum-free and disseminated lean ore with very low molybdenum content. Because the ore deposit has the characteristics of low raw ore grade and fine particle size, and the molybdenite has a layered structure and good natural buoyancy, It is often closely symbiotic with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02
Inventor 翟东民张锦林汤作锟胡保栓江世强曹亦俊马子龙郭海宁孙运礼占学登赵福阳李治科赵革银
Owner BAIYIN NONFERROUS GROUP
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