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A kind of non-molybdenum sulfide ore flotation inhibitor and its application

A technology for sulfide ore and inhibitor, applied in flotation, solid separation, etc., can solve the problems of high price, unstable chemical properties, and no commercial application value.

Active Publication Date: 2021-04-09
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the dosage is small, the use is safe and environmentally friendly, but the raw material chitosan is expensive and the production cost is too high, so it has no commercial application value.
Chinese patent CN105665149A announced "a preparation method and application of non-molybdenum sulfide mineral flotation inhibitor". The compound has a good inhibitory effect, and the synthesis process is simple, but the property of the drug is unstable, so that it is easy to hydrolyze and produce CS2 poisonous gas, which is not conducive to large-scale promotion and use.
The drug is expensive and difficult to use on a large scale

Method used

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  • A kind of non-molybdenum sulfide ore flotation inhibitor and its application
  • A kind of non-molybdenum sulfide ore flotation inhibitor and its application
  • A kind of non-molybdenum sulfide ore flotation inhibitor and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 2g of molybdenite, chalcopyrite, and galena single minerals with a particle size of +38-74μm for flotation respectively, take 50mL of distilled water and add it to a 70mL hanging tank flotation machine, and stir at a speed of 1300r / min to adjust the slurry , so that the slurry is fully dispersed.

[0029] The order of adding the medicaments is as follows: figure 1 As shown, the pH of the ore pulp was adjusted to 9 before adding the chemical agent, and the DL-dithiothreitol concentration was 0, 15.4, 50, 77.1, 108, 154, 180, 300, and 400, respectively , 500mg / L. After the stirring is completed, air flotation is carried out to obtain foam products and tailings.

[0030] Filter, dry and weigh the foam product and tailings respectively, and calculate the floating rate, the result is as follows: figure 2 shown.

[0031] It can be seen from the examples that the inhibitor has almost no inhibitory effect on molybdenite, but has good inhibitory ability on chalcopyrite...

Embodiment 2

[0033] Take 1g of +38-74μm molybdenite and chalcopyrite single minerals and mix evenly at a ratio of 1:1, take 50mL of distilled water and add it to a 70mL hanging tank flotation machine, and stir at a speed of 1300r / min to adjust the slurry , so that the slurry is fully dispersed.

[0034] The order of adding the medicaments is as follows: figure 1 As shown, the pH of the pulp was adjusted to 9 before adding the chemical agent, and after adding the chemical agent, it was stirred for 5 minutes, 3 minutes, and 2 minutes in sequence. After the stirring is completed, air flotation is carried out to obtain foam products and tailings. Dry the foam product and tailings separately, weigh and test the content of copper and molybdenum in the concentrate, and calculate the recovery rate of copper and molybdenum. The result is as image 3 shown.

[0035] It can be seen from the examples that the inhibitor can achieve a very good copper-molybdenum separation effect when the dosage is ...

Embodiment 3

[0037] Take 1g of +38-74μm molybdenite and galena single minerals and mix evenly at a ratio of 1:1, take 50mL of distilled water and add it to a 70mL hanging tank flotation machine, and stir at a speed of 1300r / min to adjust the slurry , so that the slurry is fully dispersed.

[0038] The order of adding the medicaments is as follows: figure 1 As shown, the pH of the pulp was adjusted to 9 before adding the chemical agent, and after adding the chemical agent, it was stirred for 5 minutes, 3 minutes, and 2 minutes in sequence. After the stirring is completed, air flotation is carried out to obtain foam products and tailings. Dry the foam product and tailings separately, weigh and test the content of lead and molybdenum in the concentrate, and calculate the recovery rate of lead and molybdenum. The result is as Figure 4 shown.

[0039] It can be seen from the examples that the inhibitor can achieve effective flotation separation of lead and molybdenum under the condition of...

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Abstract

A kind of sulfide ore flotation inhibitor disclosed by the present invention, chemical name is: DL dithiothreitol; Its structural formula is: provide a kind of application method of non-molybdenum sulfide ore flotation inhibitor simultaneously, comprise the following steps: ( 1) The mineral is mixed with water to obtain a pulp, and the pH of the pulp is adjusted; (2) The DL-dithiothreitol aqueous solution is added to the pH-adjusted pulp; (3) Inflatable flotation to obtain foam products and tailings, this scheme The sulfide ore flotation inhibitor has an inhibitory effect on primary copper sulfide, secondary copper sulfide and galena in molybdenum concentrate, and can realize the separation of molybdenite and non-sulfide minerals, with less consumption, low price, Pollution is small.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a non-molybdenum sulfide ore flotation inhibitor and application thereof. Background technique [0002] Molybdenum is an important rare metal, the average content of which is only 1 / 100,000 in the earth's crust. Molybdenite is the main source of molybdenum extraction, and most of molybdenite is symbiotic with sulfide minerals, especially copper sulfide minerals. According to statistics, nearly 75% of copper and 50% of molybdenum in the world are produced from copper-molybdenum ore. Copper-molybdenum ore is usually mixed flotation, and then copper-molybdenum separation is often carried out by means of copper suppression and molybdenum floating. Currently commonly used copper sulfide inhibitors mainly include sulfides (sodium sulfide, sodium hydrosulfide, etc.), cyanides (sodium cyanide, potassium cyanide, etc.), Knox reagent and sodium thioglycolate. Sodium sulfide water is in...

Claims

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Application Information

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IPC IPC(8): B03D1/012B03D101/06B03D103/02
CPCB03D1/012B03D2201/06B03D2203/02
Inventor 杨丙桥严海曾梦媛贾菲菲黄鹏亮
Owner WUHAN INSTITUTE OF TECHNOLOGY
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