Combined reagent for zinc-containing ore flotation and using method thereof

A combination of reagents and zinc ore technology, applied in flotation, solid separation, etc., can solve the problems of difficult to find sulfide ore and oxide ore, simultaneous recovery, ore buoyancy difference, etc., to improve flotation effect, reduce consumption, The effect of reducing production costs

Inactive Publication Date: 2018-11-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the flotation process for recovering zinc is the priority flotation method, that is, the process of selecting easy-to-select sulfide ores first, and then selecting oxidized ores. Simultaneous recovery with oxide ore

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In this example, a low-grade zinc-containing ore in Yunnan with a zinc grade of 3.56% is used as the processing object. The specific method is: grind the zinc-containing ore to a fineness of -0.074mm to account for 50%, and the dosage of each agent is: pH regulator carbonic acid Sodium 200g / t, gangue inhibitor sodium hexametaphosphate 500g / t, collector xanthate 20g / t, after a rough separation, the grade of zinc concentrate is 21.86%, and the recovery rate is 61.38%.

[0017] The combined medicament of the present invention is used as a collector to replace xanthate, and the dosage is 20g / t. The raw materials and their mass percentages in the combined medicament are: hydroxamic acid 5wt%, ethylenediamine 10wt%, xanthate 60wt%, Palmitoyl glycine 25wt%, under the same flotation conditions, the grade of zinc concentrate is 26.65%, the recovery rate is 82.72%, the concentrate grade and recovery rate have been greatly improved.

Embodiment 2

[0019] In this example, a low-grade zinc-containing ore in Guangxi with a raw ore zinc grade of 6.83% is used as the processing object. The specific method is: grind the raw zinc-containing ore to a fineness of -0.074mm and account for 75%, and the dosage of each agent is: pH regulator carbonic acid Sodium 700g / t, gangue inhibitor sodium hexametaphosphate 1000g / t, collector octyl hydroxamic acid 150g / t, after a rough separation, the grade of zinc concentrate is 28.48%, and the recovery rate is 65.38%.

[0020] The combined agent of the present invention is used as a collector to replace octylhydroxamic acid, and the dosage is 150g / t. The raw materials and their mass percentages in the combined agent are: hydroxamic acid 20wt%, ethylenediamine 20wt%, xanthate 20wt%, palmitoylglycine 40wt%; under the same flotation conditions, the grade of zinc concentrate was 34.65%, the recovery rate was 75.27%, and the flotation index was significantly improved.

Embodiment 3

[0022] In this embodiment, a certain zinc-containing ore raw ore zinc grade of 9.56% in Guizhou is used as the processing object. The specific method is: grind the zinc-containing ore raw ore to a fineness of -0.074mm to account for 95%, and the dosage of each agent is: pH regulator sodium carbonate 1500g / t, gangue inhibitor sodium hexametaphosphate 2000g / t, collector palmitoylglycine 300g / t, after a rough separation, the grade of zinc concentrate is 26.42%, and the recovery rate is 72.58%.

[0023] The combined agent of the present invention is used as a collector to replace palmitoylglycine, and the dosage is 300g / t. The raw materials and their mass percentages in the combined agent are: 40wt% hydroxamic acid, 45wt% ethylenediamine, and 10wt% xanthate. %, palmitoyl glycine 5wt%; under the same flotation conditions, the grade of zinc concentrate was 32.84%, the recovery rate was 81.52%, and a better flotation index was obtained.

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PUM

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Abstract

The invention discloses a combined reagent for zinc-containing ore flotation and a using method thereof, and belongs to the field of mineral flotation reagents. The combined reagent comprises, by mass, 5-40% of hydroxamic acid (the length of a carbon chain is C6-C8), 10-50% of ethidene diamine, 10-60% of xanthate (the length of a carbon chain is C2-C5) and 5-40% of palmitoyl glycine. The reagent is soluble at normal temperature, free of toxins, efficient and environmentally friendly. The zinc-containing ore flotation index can be improved. Compared with a conventional zinc oxide flotation collector, the combined reagent has the advantages of being small in reagent consumption and low in price, zinc sulfide and zinc oxide do not need to be separately graded in the flotation technology, zincsulfide ore and zinc oxide ore can be recycled at the same time, and the combined reagent especially has a good flotation effect on low-grade zinc oxide ore with a relatively high sludge content.

Description

technical field [0001] The invention relates to a combined reagent for flotation of zinc-containing ore and a method for using the same, belonging to the field of mineral flotation reagents. Background technique [0002] Zinc is an important strategic non-ferrous metal resource in the country. It is second only to copper and aluminum in the consumption of non-ferrous metals. Zinc can be made into alloys with better physical and chemical properties with various metals. It has a comprehensive impact on the development of the national economy. important role. According to statistics from the U.S. Geological Survey, the world’s proven zinc reserves are 180 million tons, and countries with proven zinc reserves exceeding 10 million tons include Australia, China, Peru, Kazakhstan and the United States. Zinc resource reserves account for almost 60% of the global zinc resource reserves. my country's zinc ore reserves account for 18.3% of the world's zinc reserves, accounting for 19...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D1/002B03D101/02B03D101/00B03D103/02
CPCB03D1/002B03D1/012B03D2201/007B03D2201/02B03D2203/02
Inventor 罗斌刘全军余力江旭纪慧超
Owner KUNMING UNIV OF SCI & TECH
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