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Flotation method of lead-zinic-sulphide ore with high oxygenation efficiency

A technology of oxidation rate and sulfide ore, which is applied in the field of flotation of lead-zinc sulfide ore with high oxidation rate, can solve the problems of low lead concentrate grade, low recovery rate, and large consumption of beneficiation agents, so as to improve recovery rate and recovery rate , Improve the effect of concentrate quality

Inactive Publication Date: 2010-07-28
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are problems such as low lead concentrate grade, low recovery rate, and large consumption of beneficiation reagents in the production of conventional flotation methods.

Method used

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  • Flotation method of lead-zinic-sulphide ore with high oxygenation efficiency
  • Flotation method of lead-zinic-sulphide ore with high oxygenation efficiency
  • Flotation method of lead-zinic-sulphide ore with high oxygenation efficiency

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. A lead-zinc mine in Mengzi, Yunnan. The main metal minerals of the ore are galena, lead oxide, sphalerite and pyrite. The main gangue minerals are quartz, calcite and so on. The oxidation rate of lead in the ore is 15.87%, and the oxidation rate of zinc is 2.32%. The multi-element analysis results of the ore are shown in Table 1.

[0019] Table 1 Multi-element analysis of raw ore

[0020]

[0021]

[0022] use as figure 1 The process flow is shown, and the specific process parameters are;

[0023] ① Grinding process: The lime consumption is 3000g / t, so that the pH of the slurry is 11.3, and the particle size of the grinding overflow product is -0.074mm, accounting for 60%; the grinding overflow product enters the flotation through the mixing tank.

[0024] ②The first flotation of lead: the flotation concentration is 30%, adding isobutyl xanthate ethyl formate 10g / t raw ore, ethyl disulfide [(C 2 h 5 ) 2 NCSSK] 20g / t raw ore, the foaming agent added is 30g...

Embodiment 2

[0029] 1. A lead-zinc mine in Wenshan, Yunnan. The main metal minerals of the ore are galena, lead oxide, sphalerite and pyrite. The main gangue minerals are hematite, quartz, calcite and so on. The oxidation rate of lead in the ore is 20.45%, and the oxidation rate of zinc is 3.13%. The results of multi-element analysis of the ore are shown in Table 2.

[0030] Table 2 Multi-element analysis of raw ore

[0031]

[0032] use as figure 1 The process flow is shown, and the specific process parameters are;

[0033] ① Grinding process: The lime consumption is 3500g / t, so that the pH of the slurry is 11.5, and the particle size of the grinding overflow product is -0.074mm, accounting for 70%; the grinding overflow product enters the flotation through the mixing tank.

[0034] ②The first flotation of lead: the flotation concentration is 30%, adding isobutyl xanthate ethyl formate 120g / t raw ore, ethyl disulfide [(C 2 h 5 ) 2 NCSSK] 40g / t raw ore, butyl ether alcohol 30g / t raw...

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PUM

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Abstract

The invention discloses a select flotation method of lead-zinic-sulphide ore with high oxygenation efficiency. The method comprises the following steps: carrying out first flotation on ore pulp of which the pH value is 11.3-11.5 and the concentration is 30%; adding 10-20g / t of raw ore of isobutyl xanthate ethyl formate and 20-40g / t of raw ore of diethyldithiocarbamate (C2H5)2NCSSK to obtain rough concentrate of lead; carrying out a flow comprising one rough flotation, one scavenging and two concentration on the remained tail ore remained after the first selection flotation to obtain the remained lead ore material; combining with the lead rough concentrate obtained in the first flotation and selecting for one time to form the ultimate lead concentrate; and obtaining zinic concentrate by selecting and floating the tail ore after the lead floatation. The lead-zinic-sulphide ore of which the oxygenation efficiency is 15-20% can obtain Pb grade of 51-52% and the recovery of 80-84% by adopting the invention; and the zinic concentrate grade is 46-50%, the recovery is 84-86%; and compared with the common method, the recovery rates of Pb and Zn are improved by more than 8%.

Description

technical field [0001] The invention belongs to the field of mineral processing, and in particular relates to a method for flotation of lead-zinc sulfide ore with high oxidation rate. Background technique [0002] my country's lead-zinc ore resources are abundant, but most of them belong to the high oxidation rate sulfide ore type, the lead oxidation rate is high, the galena contained in the ore has different flotation properties due to reasons such as the embedded particle size and high oxidation rate. The current lead-zinc ore flotation technology only considers the use of activators for activation, and then uses ordinary sulfide ore collectors for flotation, ignoring a series of characteristics of lead-zinc sulfide ores with high oxidation rates. In addition, lead oxide ore will dissolve during the flotation process, so it is necessary to use a combination of efficient oxide ore collectors and sulfide ore collectors to improve the recovery rate and concentrate quality of t...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00B03D1/012
Inventor 覃文庆黎维中陈业建何名飞黄伟忠曾科刘三军刘瑞增
Owner CENT SOUTH UNIV
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