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Flotation separation method for molybdenite and galena

A separation method and technology for galena, applied in flotation, solid separation and other directions, can solve the problems of low recovery rate of molybdenum, viscous pulp, difficult separation of molybdenite and galena, etc. The effect of industrialization and high practical value

Inactive Publication Date: 2010-12-29
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Directly cause the pulp to be thick, galena is difficult to suppress, molybdenite and galena are difficult to separate, and the recovery rate of molybdenum is low

Method used

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  • Flotation separation method for molybdenite and galena
  • Flotation separation method for molybdenite and galena
  • Flotation separation method for molybdenite and galena

Examples

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Embodiment 1

[0028] Such as figure 1 As shown, the flotation separation method of molybdenite and galena according to the present invention includes the following steps:

[0029] Step 1. Coarse grinding: According to the conventional flotation separation and coarse grinding process, the molybdenum ore, ie the raw ore, is coarsely ground by a ball mill, and the grinding fineness is -200 mesh, accounting for 65-70%. Before coarse grinding, conventional molybdenum flotation agents and pH regulators are added to the raw ore as needed. The raw ore is molybdenum ore containing lead>0.1wt%.

[0030] In this embodiment, the raw ore is a molybdenum ore containing 0.082% by weight of molybdenum and 0.2% by weight of lead, and has a mass of 25 kg. The conventional molybdenum flotation agent added is a collector, specifically kerosene; the pH regulator is lime. Before coarse grinding, kerosene and lime were added to the ore, and the amounts of the two were 200 g / ton of ore (200g of kerosene per ton of o...

Embodiment 2

[0043] In this embodiment, the difference from embodiment 1 is: before the regrind described in step 3, to the lead-containing molybdenum crude concentrate, activated carbon with a particle size of 200±50 mesh is added and the amount of activated carbon added is 100 ~200 g / ton of raw ore, the specific amount of activated carbon added is 150 g / ton of raw ore and the total amount of phosphorus knox added in the multiple beneficiation process is 800 g / ton of raw ore. In this embodiment, the remaining separation steps are the same as in embodiment 1.

[0044] In addition, for the convenience of comparison, a set of flotation separation process is used to flotate the raw ore, that is, no activated carbon is added in step 3 and galena inhibitor-phosphonox is not added in step 4, and the rest of the steps are all implemented Example 1 is the same.

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Abstract

The invention discloses a flotation separation method for molybdenite and galena, which comprises the following steps of: 1, rough grinding; 2, rough selection and scavenging for obtaining lead-containing molybdenum rough concentrate; 3, regrinding after a certain amount of active carbon is added into the lead-containing molybdenum rough concentrate; and 4, multiple selection: selecting the reground lead-containing molybdenum rough concentrate for multiple times according to the conventional selection process, adding a galena inhibitor into the lead-containing molybdenum rough concentrate at each time of selection, and then adding a molybdenite collecting agent and a foaming agent into the lead-containing molybdenum rough concentrate as required. The method has the advantages of simple separation process, reasonable design, good separation effect and capabilities of reducing the lead content to be as minimum as possible in an ore dressing process of molybdenum, effectively improving the reclamation rate of the molybdenum and thoroughly reducing the pollution of the lead to the environment at the same time of reducing the molybdenum concentrate smelting production cost and simplifying the production process.

Description

Technical field [0001] The invention belongs to the technical field of flotation separation of molybdenum lead ore, and particularly relates to a flotation separation method of molybdenite and galena. Background technique [0002] The reserves of molybdenum resources in my country are about 3.3 million tons, ranking first in the world. Of the world's four largest molybdenum mines, China has three. Many molybdenum deposits have high lead content. For example, the molybdenum deposits in Luanchuan area of ​​Henan Province and Jinduicheng molybdenum deposits in Shaanxi, which have the largest reserves in the country, have high lead content. In the process of molybdenum beneficiation, technologies to inhibit lead have been adopted. There are a large number of carbonate-type molybdenum-lead deposits in the Huanglongpu molybdenum mining area in Luonan, Shaanxi. The average grade of molybdenum is between 0.06% and 0.078%, the amount of molybdenum is about 287,000 tons, and the lead grad...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/02B03B1/00B03B1/04B03D1/10B03D1/002B03D103/04B03D101/06
Inventor 吴贤奚正平李来平张文钲
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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