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Molybdenite emulsion collector and preparation method thereof

A collector and molybdenite technology, applied in solid separation, flotation, etc., can solve the problems of unable to meet production needs, affect the quality of concentrate, high freezing point, etc., to achieve efficient recycling and improve the recovery rate of roughing , the effect of improving the dispersion performance

Pending Publication Date: 2022-03-25
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the shortcomings of the traditional kerosene collectors, which have insufficient collection capacity, have gradually emerged and cannot meet the current production needs.
Compared with kerosene, diesel oil has a stronger collection capacity, but its freezing point is higher, and its dispersibility in water is poor, which is not conducive to the flotation of molybdenum ore at low temperature, and its selectivity is poor, so that a large amount of copper elements enter the molybdenum concentrate , affecting the quality of the concentrate

Method used

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  • Molybdenite emulsion collector and preparation method thereof
  • Molybdenite emulsion collector and preparation method thereof
  • Molybdenite emulsion collector and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0021] To provide an emulsifier for improving the dispersion effect and stability of a hydrocarbon oil collector in water and a preparation method thereof.

[0022] The molybdenite emulsified collector of the present invention comprises 45 parts of No. 0 diesel oil, 150 parts of coconut oil, 450-600 parts of methanol, 60 parts of concentrated sulfuric acid and 90-180 parts of water in parts by weight.

[0023] Further, the molybdenite emulsified collector includes 45 parts by weight of No. 0 diesel oil, 150 parts of coconut oil, 600 parts of methanol, 60 parts of concentrated sulfuric acid, and 100 parts of water.

[0024] Further, the molybdenite emulsified collector includes 45 parts of No. 0 diesel oil, 150 parts of coconut oil, 500 parts of methanol, 60 parts of concentrated sulfuric acid and 90 parts of water in parts by weight.

[0025] Further, the molybdenite emulsified collector includes 45 parts by weight of No. 0 diesel oil, 150 parts of coconut oil, 450 parts of me...

Embodiment 2

[0032] Raw material: No. 0 diesel oil 4.5g, coconut oil 15.0g, methanol 50.0g, concentrated sulfuric acid 6.0g, water 9.0g

[0033] Preparation method: mix coconut oil and methanol into a three-necked flask, slowly add 6.0 g of concentrated sulfuric acid dropwise, react at 95°C for 1.5 h, wash the reaction product three times with sodium carbonate solution, let stand to remove the water layer, then Wash with deionized water for 3 times, let stand to remove the water layer, add anhydrous sodium carbonate to dry, and filter through filter paper to obtain the emulsifier. Get this emulsifier 0.5g, join in the diesel oil, and add water and stir. The average particle size of the prepared emulsion is 59.46nm, such as figure 1 Shown is the particle size distribution of oil droplets in the prepared molybdenite emulsion collector measured by laser particle size analyzer.

Embodiment 3

[0035] Raw materials: 4.5g No. 0 diesel oil, 15.0g coconut oil, 60.0g methanol, 6.0g concentrated sulfuric acid, 10.0g water

[0036] Preparation method: mix coconut oil and methanol into a three-necked flask, slowly add 6.0 g of concentrated sulfuric acid dropwise, react at 85°C for 2.0 h, wash the reaction product three times with sodium carbonate solution, let stand to remove the water layer, then Wash with deionized water for 3 times, let stand to remove the water layer, add anhydrous sodium carbonate to dry, and filter through filter paper to obtain the emulsifier. Get this emulsifier 0.5g, join in 4.5g diesel oil, and add water and stir on magnetic stirrer. The average particle size of the prepared emulsion is 40.07nm, such as figure 2 Shown is the particle size distribution of oil droplets in the prepared molybdenite emulsion collector measured by laser particle size analyzer.

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Abstract

The molybdenite emulsion collecting agent comprises the following components in parts by weight: 45 parts of 0 # diesel oil, 150 parts of coconut oil, 450-600 parts of methanol, 60 parts of concentrated sulfuric acid and 90-180 parts of water. The molybdenum ore emulsifying collecting agent is stable in property, has no obvious change after standing for more than 3 months, and can obviously improve the dispersion performance of diesel oil in water. Under the condition that the concentrate grade is equivalent, molybdenum concentrate with the grade being 4.5% and the recovery rate being 86.5% can be obtained after one-time roughing is conducted through the emulsified collecting agent prepared through the method, and the molybdenum recovery rate is remarkably improved compared with the molybdenum recovery rate obtained when a diesel oil collecting agent is singly used. After the emulsified collecting agent is applied to molybdenite flotation, the recovery rate of molybdenite roughing is effectively increased, and efficient recycling of molybdenite resources is facilitated.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a molybdenite emulsified collector and a preparation method thereof. Background technique [0002] Molybdenite has good natural buoyancy, so it is usually treated by flotation process in the beneficiation process. Flotation is carried out by adding hydrocarbon oil collectors, such as kerosene and diesel oil, which act on the surface of molybdenite to form an oil film, which enhances the hydrophobicity of the surface of molybdenite, so that it can adhere to the surface of the bubbles and be absorbed by the bubbles. Carried to the surface of the pulp to form mineralized foam, and then separated from other minerals. [0003] Hydrocarbon oil is insoluble in water. During the flotation process, it is "crushed" into small oil droplets by mechanical stirring and enters the pulp. This oil-water dispersed phase is an unstable system. Therefore, when the amount of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D103/02
CPCB03D1/018B03D2201/02B03D2203/02
Inventor 李治杭刘雁鹰陈丽娟姚辉苏圣博
Owner CHANGAN UNIV