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Inhibitor for sorting molybdenum bismuth ore, and application thereof

A molybdenum-bismuth ore and inhibitor technology, applied in flotation, solid separation, etc., to achieve the effects of improving the utilization rate of mineral resources, improving efficiency, and simplifying the chemical system

Active Publication Date: 2021-07-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the flotation technology of molybdenum and bismuth separation using chlorine complex oxidation to suppress bismuth-containing minerals is rarely reported in relevant literature.

Method used

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  • Inhibitor for sorting molybdenum bismuth ore, and application thereof
  • Inhibitor for sorting molybdenum bismuth ore, and application thereof
  • Inhibitor for sorting molybdenum bismuth ore, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. Mineral raw materials

[0047] A molybdenum-bismuth mixed coarse concentrate in Hunan contains 4-5% molybdenum and 9-10% bismuth. The molybdenum is mainly molybdenite, and the bismuth is mainly bismuthite. Grinding to -0.074mm accounts for 80%;

[0048] 2. The operation steps and technical conditions are as follows:

[0049] ① Rough selection operation: Weigh a certain amount of molybdenum-bismuth mixed concentrate, add water to adjust the pulp concentration to 25-30%, pour the pulp into a suitable flotation tank, and add 21% concentration of the present invention to the flotation tank in turn 500g / t of oxygen, 3000g / t of calcium hypochlorite, 1000g / t of kerosene as a collector, 25g / t of pine alcohol oil as a foaming agent, stirring for 3 to 5 minutes for each agent, and then roughing separation of molybdenum and bismuth. Obtain molybdenum coarse concentrate and tailings; before roughing, add calcium hypochlorite and stir for 5 minutes, add collector kerosene and c...

Embodiment 2

[0058] Other conditions are consistent with Example 1, except that: in step ①, the maximum dosage of the inhibitor of the present invention is 10000g / t, and the results are shown in Table 1.

Embodiment 3

[0060] Other conditions are all consistent with embodiment 1, difference is: in step 1. in, add the inhibitor minimum dosage of the present invention, promptly oxygen 0g / t, calcium hypochlorite 300g / t, its result is as shown in table 1 .

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Abstract

The invention relates to an inhibitor for sorting molybdenum bismuth ore, and an application method thereof. The method comprises the following steps: introducing an oxidizing agent into flotation pulp, and selectively oxidizing the surface of a bismuth mineral to form free bismuth ions on the surface; and then introducing a chlorine-containing compound, and forming a hydrophilic bismuth oxychloride layer on the surface of the bismuth mineral through the complexing hydrolysis effect of bismuth ions and chloride ions to achieve the purpose of inhibiting the bismuth mineral from floating upwards. The inhibitor is used for sorting molybdenum-bismuth ore, the inhibition effect generated by the inhibitor is higher than that generated by a traditional inhibitor, selectivity is better, molybdenum ore and bismuth ore can be fully separated, and the flotation index of molybdenum concentrate is improved. The method is easy to operate, meanwhile, the defects that a traditional toxic inhibitor is large in dosage, severe in operation environment, serious in environmental pollution and harmful to the human body are overcome, the flotation process is simplified, flotation reagents are reduced, the reagent dosage is reduced, the separation effect is good, environmental pollution is small, and industrial application is facilitated.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal beneficiation, in particular to an inhibitor for sorting molybdenum-bismuth ore and an application method thereof. Background technique [0002] With the development of society, the utilization rate of mineral resources is increasing day by day, the properties of ore are becoming more and more complex, and the difficulty of beneficiation technology is becoming more and more difficult. Molybdenum-bismuth ore belongs to an ore with a very complicated symbiotic relationship. Because of the similar buoyancy between minerals, the fine particle size of embedded distribution, and poor dissociation of monomers, it is difficult to separate minerals from each other. At present, the most commonly used method for the separation of molybdenum and bismuth is to suppress bismuth and float molybdenum. Common bismuth inhibitors mainly include sulfides (sodium sulfide, sodium hydrosulfide, ammonium sulfi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/001B03B1/04B03D101/06B03D103/02
CPCB03D1/001B03B1/04B03D2201/06B03D2203/02Y02P10/20
Inventor 胡岳华林上勇刘润清孙伟韩海生
Owner CENT SOUTH UNIV
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