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Preparation method of bismuth lead sulfide ore flotation inhibitor and use method of inhibitor

A technology for sulfide ore and inhibitor, which is applied in flotation, solid separation and other directions, can solve the problems of inability to inhibit bismuth and lead minerals, high production and processing costs, and high beneficiation costs, and achieves a wide range of pH applications, low environmental pollution, and low price. low cost effect

Active Publication Date: 2019-07-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sodium sulfide can inhibit bismuth and lead minerals only when it is used in large amounts. In the case of low dosage, not only can it not inhibit bismuth and lead minerals, but it will activate bismuth lead and other metal sulfide ores and oxide ores, resulting in separation. difficulty
A large amount of sodium sulfide not only has high production and processing costs, but also causes unnecessary economic burdens on the enterprise. On the other hand, the aqueous solution of sodium sulfide will release hydrogen sulfide from the water. Difficulty in breathing, suffocation, etc., and a strong sense of toxicity
When using sodium sulfide, the operator should wear protective clothing and a protective mask, the operation is very inconvenient
Other inhibitors such as sulfite, bleaching powder, potassium permanganate, etc., the inhibitory effect of bismuth and lead minerals alone is poor, and they need to be used in combination with other inhibitors, resulting in high beneficiation costs, resulting in their use in production. limit

Method used

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  • Preparation method of bismuth lead sulfide ore flotation inhibitor and use method of inhibitor
  • Preparation method of bismuth lead sulfide ore flotation inhibitor and use method of inhibitor
  • Preparation method of bismuth lead sulfide ore flotation inhibitor and use method of inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 15 parts of chloroacetic acid, 40 parts of imidazole, 40 parts of carbon disulfide, and 33 parts of ethanol into a container equipped with a stirrer and a thermometer. Mix and stir. After fully dissolving, heat it in a water bath to 45°C. After 3 hours of reaction, cool and crystallize, and the obtained product is It is the flotation inhibitor of the bismuth lead sulfide ore.

Embodiment 2

[0052] 1. Raw material

[0053]The mineral raw material is molybdenum-bismuth mixed coarse concentrate, and the phase analysis results show that the main molybdenum-containing mineral in the mineral is molybdenite, and the main bismuth-containing mineral is bismuthite, with a fineness of -200 mesh accounting for 80-85%. The inhibitor used is the inhibitor obtained in Example 1 and Comparative Examples 1-8.

[0054] 2. Operation steps are technical conditions

[0055] Take 1 kg of mixed coarse concentrate and add water to adjust the slurry concentration to 25-35%, add the 500g / t flotation inhibitor, stir for 3-5 minutes, add 100g / t kerosene and 25g / t 2# oil, and then Carry out roughing operations to obtain rough concentrates and tailings; add 120g / t flotation inhibitor to the rough concentrates, and perform 5 times of concentration operations after 3 to 5 minutes of chemical action, and add 50g / t flotation inhibitors to the roughed tailings For kerosene, two sweeping operatio...

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Abstract

The invention belongs to the technical field of sulfide ore beneficiation, and particularly relates to a preparation method of a bismuth lead sulfide ore flotation inhibitor and a use method thereof.The bismuth lead sulfide ore flotation inhibitor is prepared by the following steps: step 1, in parts by mass, preparing and getting 10 to 20 parts of halogenated carboxylic acid, 30 to 60 parts of imidazole, 30 to 60 parts of carbon disulfide, and 25 to 50 parts of organic solvent; and step 2, uniformly mixing the raw materials of the first step, conducting reacting on the mixture at 0 to 95 DEGC for 2-12 hours, so as to obtain the bismuth lead sulfide ore flotation inhibitor. The obtained product has inhibitory effects on primary and secondary sulfide ore of bismuth and lead, and can be applied to flotation separation of molybdenum bismuth ore, molybdenum lead ore, lead zinc ore, copper lead ore and the like, especially for bismuth-containing sulfide ore or non-bismuth sulfide ore. Thepreparation method of the flotation inhibitor is simple in operation, mild in process conditions, low in raw material cost, convenient in use and less in environmental pollution, and meets industrialproduction requirements.

Description

technical field [0001] The invention belongs to the technical field of sulfide ore beneficiation, and in particular relates to a preparation method and a use method of a bismuth-lead sulfide ore flotation inhibitor. Background technique [0002] The main function of the inhibitor is to selectively destroy or weaken the adsorption of a certain mineral to the collector in the case of similar buoyancy of several minerals, selectively enhance the hydrophilicity of the surface of a certain mineral, and promote this Mineraloids are suppressed to achieve the separation of target minerals and gangue minerals. At present, the inhibitors of bismuth-lead sulfide ore mainly include dichromate, sulfite, potassium permanganate, bleaching powder, sodium sulfide, carboxymethyl cellulose and sodium humate. [0003] Dichromate is an effective inhibitor of bismuth and lead. It not only has a strong inhibitory effect on bismuth and lead, but also has a strong selectivity. However, because dic...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 刘润清林上勇胡岳华孙伟仲崇毅
Owner CENT SOUTH UNIV
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