Method for activating calamine in flotation process

A technology of flotation process and activation method, which is applied to the activation of hemimorphite recovery from flotation of low-grade zinc oxide ore, and the activation field of hemimorphite flotation process, which can solve the complex properties of zinc oxide ore and difficult treatment of hemimorphite, etc. problem, to achieve the effect of improving the recovery rate and improving the flotation index

Inactive Publication Date: 2012-06-13
KUNMING UNIV OF SCI & TECH
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  • Summary
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Problems solved by technology

[0005] Due to the complex properties of zinc oxide ore and various types of minerals, in order to solve the characteristics of hemimorphite in zinc oxide ore, which is difficult to handle, the present invention provides an activation method for the flotation process of hemimorphite, which is used to solve the problem of hemimorphite in the flotation process. Mine Activation Problem

Method used

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  • Method for activating calamine in flotation process
  • Method for activating calamine in flotation process
  • Method for activating calamine in flotation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Taken from the Huize lead-zinc mine in Yunnan Province, it is a pure natural mineral with complete crystallization, yellow or brownish yellow, and a pure hemimorphite mineral containing 48.70wt% zinc, which is the mass percentage content of dry grinding to a qualified particle size of 320 mesh Account for 80wt%, obtain test sample;

[0017] (2) Add the test sample in step (1) to the pulp with a solid-to-liquid ratio of 1:2g / L, and add an activator to the evenly stirred slurry. The total amount added is 80mg / L of the pulp volume, and the action time is 5min, then add collector 30mg / L, collector action time is 4.5min, flotation scraping after pulping, flotation scraping time is 5min, the foam product scraped out is the flotation concentrate, The rest is tailings. The activator used is sodium hydroxamate: sodium carbonate: sodium sulfide with a molar ratio of 1:3:3. Sodium hydroxamate is a sodium salt formed by saponification of hydroxamic acid—sodium hydroxamate. Th...

Embodiment 2

[0021] (1) Taken from the Huize lead-zinc mine in Yunnan Province, it is a pure natural mineral with complete crystallization, yellow or brownish yellow, zinc-containing 49wt% hemimorphite pure mineral, and the mass percentage of qualified particle size of dry grinding to 320 mesh accounts for 85wt %, get the test sample;

[0022] (2) Add the test sample in step (1) to the slurry with a solid-to-liquid ratio of 1:3g / L, and add an activator to the evenly stirred slurry. The total amount added is 115mg / L of the slurry volume, and the action time is 4.5min, then add collector 35mg / L, collector action time is 4min, flotation scraping after slurry mixing, flotation scraping time is 6min, the foam product scraped out is the flotation concentrate, the rest for tailings. The activator used is sodium hydroxamate: sodium carbonate: sodium sulfide with a molar ratio of 1:3:3. Sodium hydroxamate is a sodium salt formed by saponification of hydroxamic acid—sodium hydroxamate. The collect...

Embodiment 3

[0026] (1) It is taken from the Huize lead-zinc mine in Yunnan Province. It is a pure natural mineral with complete crystallization, yellow or brownish yellow, and 50.00wt% zinc-containing hemimorphite pure mineral. 90wt%, obtain test sample;

[0027] (2) Add the test sample in step (1) to the slurry with a solid-to-liquid ratio of 1:2.5g / L, and add an activator to the evenly stirred slurry. The total amount added is 140mg / L of the slurry volume, and the action time 4min, then add collector 40 mg / L, collector action time is 5min, flotation scraping after pulping, flotation scraping time is 7min, the foam product scraped out is the flotation concentrate, The rest is tailings. The activator used is sodium hydroxamate: sodium carbonate: sodium sulfide with a molar ratio of 1:3:3. Sodium hydroxamate is a sodium salt formed by saponification of hydroxamic acid—sodium hydroxamate. The collector used is dodecyl primary amine salt. (The results are shown in Table 3)

[0028] Table...

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Abstract

The invention provides a method for activating calamine in the flotation process and belongs to the technical field of ore benefication. The method comprises the following steps of: dry-milling calamine pure mineral to obtain test samples which comprise 80 to 90 weight percent of 320 meshes qualified particles; adding the test samples into a flotation machine, wherein the flotation pulp volume is 50 ml and the test mineral samples at each time is 0.5 g; and adding a combined regulator of sodium hydroxamate, sodium carbonate and sodium sulfide into pulp which is stirred uniformly and taking the combined regulator as an activating agent of the calamine, wherein the total adding amount is 80 to 140 mg / L per ton of the calamine and the action time is 4 to 5 minutes, the using amount of a collector dodecylamine is 30 to 40 mg / L and the action time is 4 to 5 minutes, and the flotation time is 5 to 7 minutes. The activation effect of the method is more excellent than the conventional activation effect; the total using amount of the sodium sulfide is reduced by 20 to 30 percent; and compared with the conventional activation method of the calamine, the activation method has the advantage that: the flotation recovery rate of the calamine can be increased by 6 to 12 percent.

Description

technical field [0001] The invention relates to an activation method for the flotation process of hemimorphite, in particular to an activation method for recovering hemimorphite through flotation of low-grade zinc oxide ore, and belongs to the technical field of mineral processing. Background technique [0002] Zinc oxide reserves in my country are abundant, with many lean ores and few rich ores, and the distribution is relatively concentrated. They are mainly distributed in Yunnan, Guizhou, Gansu, Shaanxi and other provinces, especially in Yunnan, where the reserves of zinc metal are about 7.1 million. There are also a certain amount of zinc oxide deposits in Qinghai and Inner Mongolia. However, the low-grade and high-impurity zinc oxide ore resources in my country have not been rationally utilized due to the lack of efficient processing technology. [0003] Zinc oxide minerals are an important class of zinc-containing minerals, which are the result of long-term weatheri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/04
Inventor 章晓林徐瑾刘殿文方建军杨柳毅李明晓
Owner KUNMING UNIV OF SCI & TECH
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