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Ore-dressing method for low-grade lead sulfide ore

A beneficiation method, a technology of lead sulfide ore, applied in flotation, solid separation, etc., can solve the problems of complex steps in the beneficiation process of lead coarse concentrate, increase the difficulty and cost of smelting, reduce the recovery rate of smelting, and achieve cost reduction. Low, high grade, high recovery effect

Inactive Publication Date: 2017-08-15
新疆紫金锌业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, the method of flotation is used to obtain lead concentrate from primary ore, but the process of refining lead concentrate is complicated and requires multiple refinements; in the process of flotation, the same type of flotation agents will be used more One, and the dosage is large; there are more impurities in the lead concentrate obtained by flotation, that is, there are more gangue minerals, and the gangue minerals are closely embedded with useful metals. If the content is large, the smelting efficiency will be improved Difficulty and cost will reduce the recovery rate of smelting; and low-grade lead concentrates need further optimization, which will increase the cost of beneficiation

Method used

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  • Ore-dressing method for low-grade lead sulfide ore
  • Ore-dressing method for low-grade lead sulfide ore
  • Ore-dressing method for low-grade lead sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The specific operation steps are as follows:

[0053] (1) Preliminary work: crush the raw ore and grind the ore for the first time, so that the content of the mineral powder with a fineness of less than 0.074mm reaches 48%. Add water to the mineral powder and stir evenly to obtain the ore pulp 1. The mass fraction of the ore pulp 1 is 39%. .

[0054] (2) Rough separation operation: add water glass 38g / t to the rough separation tailings, stir for 10 minutes, then add ethyl sodium xanthate 11g / t and terpineol oil 9g / t, stir for 1 minute and then carry out rough separation , the roughing time is 5 minutes, and roughing tailings and roughing foam are obtained, and the roughing foam is lead rough concentrate.

[0055] (3) Sweeping operation: Add ethyl sodium xanthate 6g / t and terpineol oil 3g / t to the roughing tailings, stir for 1 minute and then sweep for 1 minute to obtain the scavenging tails ore and scavenging froth, the scavenging froth returns to the rougher operatio...

Embodiment 2

[0066] The specific operation steps are as follows:

[0067] (1) Preliminary work: crush the raw ore and grind the ore for the first time, so that the content of ore powder with a fineness less than 0.074mm reaches 52%, add water to the ore powder and stir evenly to obtain ore pulp 1, the mass fraction of ore pulp 1 is 42% .

[0068] (2) Rough separation operation: Add 42g / t of water glass to the rough separation tailings, stir for 15 minutes, then add 13g / t of ethyl sodium xanthate and 7g / t of terpineol oil, stir for 3 minutes and then carry out rough separation , the roughing time is 8 minutes, and the roughing tailings and roughing foam are obtained, the roughing foam is lead rough concentrate, and the lead content of the lead rough concentrate is 45.11%.

[0069] (3) Sweeping operation: Add ethyl sodium xanthate 7g / t and terpineol oil 4g / t to the roughing tailings, stir for 3 minutes and then sweep for 3 minutes to get the scavenging tails ore and scavenging froth, the s...

Embodiment 3

[0080] The specific operation steps are as follows:

[0081] (1) Preliminary work: Crushing the raw ore and grinding the ore for the first time, so that the content of the ore powder with a fineness less than 0.074mm reaches 49%. Add water to the ore powder and stir evenly to obtain the ore pulp 1. The mass fraction of the ore pulp 1 is 40%. .

[0082] (2) Rough separation operation: Add 40g / t of water glass to the rough separation tailings, stir for 13 minutes, then add 12g / t of ethyl sodium xanthate and 8g / t of terpineol oil, stir for 2 minutes before rough separation , the roughing time is 7 minutes, and the roughing tailings and roughing foam are obtained, the roughing foam is lead rough concentrate, and the lead content of the lead rough concentrate is 48.42%.

[0083] (3) Sweeping operation: add ethyl sodium xanthate 6g / t and terpineol oil 3g / t to the roughing tailings, stir for 2 minutes and then sweep, and the sweeping time is 2 minutes to obtain the scavenging tails ...

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Abstract

The invention discloses an ore-dressing method for low-grade lead sulfide ore, and relates to the technical field of ore-dressing methods. The ore-dressing method comprises the following steps: pre-working: raw ore is crushed; the ore is ground for the first time to obtain ore powder; the ore powder is mixed with water to obtain ore pulp 1; the ore pulp 1 is subjected to one time of coarse dressing operation and one time of scavenging operation to obtain final tailings and lead rough concentrate; second-time ore grinding operation: the lead rough concentrate is subjected to ore grinding for the second time and grading to obtain ore pulp 2; and the ore pulp 2 is subjected to two times of fine dressing operation to obtain lead concentrate. According to the ore-dressing method for the low-grade lead sulfide ore disclosed by the embodiment of the invention, two times of ore grinding are performed, so that useful ore and gangue ore of the ore can be fully disaggregated, and subsequent fine dressing operation is facilitated; besides, only one floatation agent of the same type is used, and the dosage of the floatation agent is small, so that the cost can be lowered; furthermore, only two times of fine dressing operation are performed, so that the procedure is relatively short; the technique is simple; the recycle rate is high; the obtained lead concentrate is high in grade; and the grade of the lead concentrate does not need to be further improved.

Description

technical field [0001] The invention belongs to the technical field of beneficiation methods, in particular to a beneficiation method of low-grade lead sulfide ore. Background technique [0002] Lead is a soft and malleable weak metal that is toxic as well as a heavy metal. Lead can be used in construction, warheads, shells, welding materials, fishing equipment, radiation protection materials, trophies and some alloys. It can also be used as a material for corrosion resistance to sulfuric acid, anti-type ray, storage battery, etc. Its alloy can be used as lead type, bearing, cable foreskin, etc., and can also be used as shot put for sports equipment, which is widely used in daily life. Lead mineral raw materials are divided into two types: sulfide ore and oxide ore. Lead sulfide ore is the main raw material for lead smelting today. [0003] Generally, the method of flotation is used to obtain lead concentrate from primary ore, but the process of refining lead concentrate ...

Claims

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Application Information

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IPC IPC(8): B03D1/02
CPCB03D1/025
Inventor 沈卫卫万玲赵业雄魏桂荣
Owner 新疆紫金锌业有限公司
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