A Synchronous Flotation Method for Oxidation-Sulfide Mixed Zinc Ore

A zinc ore, lead-zinc ore technology, applied in flotation, solid separation and other directions, can solve the problems of low flotation recovery rate, long flotation process flow, complicated operation, etc., achieve short flotation process, and is conducive to recycling , easy to operate effect

Active Publication Date: 2022-01-28
CENT SOUTH UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of long flotation process of oxidation-sulfurization mixed zinc ore, low flotation recovery rate and complicated operation, the present invention provides a synchronous flotation method of oxidation-sulfurization mixed zinc ore, which can be obtained in the same flotation operation. The oxide-zinc sulfide mixed concentrate containing zinc oxide minerals and zinc sulfide minerals does not need desliming treatment before flotation, the flotation process is short, the flotation agent system is relatively simple, the process is stable and easy to operate, and the flotation recovery of zinc High efficiency, and conducive to the recycling of mineral processing backwater

Method used

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  • A Synchronous Flotation Method for Oxidation-Sulfide Mixed Zinc Ore
  • A Synchronous Flotation Method for Oxidation-Sulfide Mixed Zinc Ore
  • A Synchronous Flotation Method for Oxidation-Sulfide Mixed Zinc Ore

Examples

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Effect test

Embodiment 1

[0021] This example takes an oxidation-sulfurization mixed zinc ore in Yunnan as the object, and the ore sample contains Zn 7.35%, CaO 13.01%, SiO 2 49.97%, the oxidation rate of zinc is 70.52%, of which the distribution rate of smithsonite is 52.85%, the distribution rate of zinc silicate is 14.27%, and the other zinc oxides are mainly zinc iron spinel.

[0022] Grind the raw ore until -0.074mm accounts for more than 85%, first add 2kg / t sodium carbonate to adjust the slurry for 5 minutes, control the pH of the slurry to about 11.0, add 100g / t aluminum sulfate and 500g / t lead nitrate to activate, then add 1000g / t tCombination of inhibitors (600g / t water glass, 200g / t sodium hexametaphosphate and 200g / t dextrin) and 1000g / t fatty acid collector, stirring slurry for 10min, synchronous flotation for 7min to obtain oxide-zinc sulfide Mixed concentrates. The test results are shown in Table 1.

Embodiment 2

[0033] In this example, an oxidation-sulfide mixed lead-zinc ore is used as the object, and the ore sample contains 4.64% of Pb, 3.22% of Zn, 19.67% of CaO, and 19.67% of SiO 2 47.57%, TFe 2.53%, MgO 8.56%, among which the oxidation rate of lead is about 50%, and the oxidation rate of zinc is about 70%.

[0034] Grind the raw ore to -0.074mm, accounting for 85%, first add 10kg / t sodium sulfide to vulcanize, then add 200g / t pentaxanthate to flotation synchronously to produce oxidation-lead sulfide concentrate, then add 5kg / t sodium carbonate to adjust the slurry for 5min , then add 500g / t lead nitrate to activate, then add 2000g / t combined inhibitor (500g / t water glass, 300g / t sodium citrate and 1200g / t lignosulfonate) and 500g / t fatty acid collector , stirring and slurrying for 5 minutes, and synchronous flotation for 10 minutes to obtain oxide-zinc sulfide concentrate. The test results are shown in Table 2.

[0035] Table 2 Oxidation-sulfurization mixed lead-zinc ore flotat...

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Abstract

The invention discloses a method for synchronous flotation of oxidized-sulfurized mixed zinc ore, comprising the following steps: (1) performing ore grinding treatment on the raw ore of oxidized-sulfurized mixed zinc ore; or directly selecting oxidized-sulfurized mixed lead-zinc ore after lead separation (2) add sodium carbonate to adjust the pulp, control the pH of the pulp to be 8-12, and then add metal ion salts, the metal ion salts are lead nitrate, lead chloride, aluminum chloride, aluminum sulfate and sulfuric acid At least one of titanium; (3) adding inhibitors and collectors, performing zinc flotation after slurry adjustment to obtain oxide-zinc sulfide mixed concentrate. The invention can obtain zinc oxide-zinc sulfide mixed concentrate containing zinc oxide minerals and zinc sulfide minerals in the same flotation operation, without desliming treatment before flotation, short flotation process, relatively simple flotation reagent system, and Stable and easy to operate, the flotation recovery rate of zinc is high, and it is beneficial to the recycling of mineral processing backwater.

Description

technical field [0001] The invention relates to a synchronous flotation method for oxidation-sulfurization mixed zinc ore, which belongs to the technical field of mineral processing. Background technique [0002] The amount of zinc metal in modern industry is second only to metals such as iron, aluminum and copper. It is mainly used in galvanizing industry, machinery manufacturing industry and battery field, and plays a very important role. my country's zinc ore resources are relatively rich. At present, most mines are mainly mining and sorting sulfide ores. Only a small number of mines can use high-grade oxide ores by leaching, while low-grade zinc oxide ores and oxide-sulfide mixed zinc Mine is a typical complex and refractory resource, and it is urgent to develop new high-efficiency mineral processing and metallurgical technologies. [0003] Conventional beneficiation technology is used to process oxidation-sulfidation mixed lead-zinc ore basically in accordance with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00
CPCB03D1/00
Inventor 张国范石晴欧乐明
Owner CENT SOUTH UNIV
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