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Preparation method of copper-molybdenum separation inhibitor

An inhibitor, copper-molybdenum technology, applied in solid separation, flotation, etc., can solve the problems of low molybdenum grade and complex composition, and achieve the effect of stable effect, high separation efficiency and high copper-molybdenum separation index

Inactive Publication Date: 2020-04-28
广西浅蓝界面科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition of copper minerals, low molybdenum grade, and collectors on the surface of copper-molybdenum concentrates, it is difficult to obtain ideal results by traditional separation methods. It is necessary to develop new separation inhibitors and methods for copper-molybdenum concentrates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The preparation method of copper-molybdenum separation inhibitor of the present invention, concrete operation steps are as follows:

[0013] 1) Preparation of raw material molybdenum disulfide: dilute sodium dithiazolate to a concentration of 25% with water, control the temperature at 33°C, add molybdenum dichloride aqueous solution with a concentration of 5%, and adjust the potential with 20% sodium sulfide solution To -100mV, react for 30 minutes, stand still for 2 hours, and prepare the raw material molybdenum disulfide for use;

[0014] 2) Pour the raw material molybdenum disulfide into the mixing bucket, add 30 grams of molybdenum trisulfide, 50 grams of zirconium boride, 45 grams of palladium iodide, and 50 grams of vanadium carbide. After reacting for 2 hours, add 1-octyl -3-Methyl rice 200 grams of hydrogen sulfate, 35 grams of tetraoctyl ammonium bromide, 160 grams of clavudine, react for 1 hour, after the reaction is completed, concentrate to a concentration...

Embodiment 2

[0016] This embodiment is an application example of the copper-molybdenum separation inhibitor of the present invention, and the specific operation steps are as follows:

[0017] 1) Prepare the raw material molybdenum disulfide into a slurry with a concentration of 25%, add 2kg / t of sodium sulfide and 300g / t of sodium dithionite, control the potential of the slurry to -100mV, and stir for 10 minutes;

[0018] 2) Add the copper-molybdenum separation inhibitor and stir for 30 minutes, then inflate to carry out flotation, the foam is molybdenum concentrate, and the tailings are copper concentrate; the grade of molybdenum concentrate is 45.56% after one rough, four fine and two sweeps, The flotation recovery rate is 85.36% of the indicators.

Embodiment 3

[0020] This embodiment is another application example of the copper-molybdenum separation inhibitor described in the present invention, and the specific operation steps are as follows:

[0021] 1) Prepare the raw material molybdenum disulfide into a slurry with a concentration of 17%, add 2kg / t of sodium sulfide and 300g / t of sodium dithionite, control the potential of the slurry to -100mV, and stir for 10 minutes;

[0022] 2) Add the copper-molybdenum separation inhibitor and stir for 30 minutes, then inflate to carry out flotation, the foam is molybdenum concentrate, and the tailings are copper concentrate; the grade of molybdenum concentrate obtained after one rough, four fine and two sweeps is 48.23%, The index of flotation recovery rate is 81.25%.

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Abstract

The invention discloses a preparation method of a copper-molybdenum separation inhibitor. The preparation method comprises the following steps: 1) preparation of a raw material molybdenum disulfide: diluting sodium dithiazo phosphate with water to a concentration of 25%, controlling the temperature at 33 DEG C, adding a molybdenum dichloride aqueous solution with a concentration of 5%, adjusting the potential to -100 mV with a sodium sulfide solution with a concentration of 20%, carrying out a reaction for 30 min, and carrying out standing for 2 h to prepare the raw material molybdenum disulfide for later use; 2) pouring the raw material molybdenum disulfide into a stirring barrel; adding 30g of molybdenum trisulfide; 50g of zirconium boride, 45g of palladium iodide and 50g of vanadium carbide in sequence and reacting for 2 hours, adding 200g of 1-octyl-3-methylmizole hydrogen sulfate, 35g of tetraoctyl ammonium bromide and 160g of clavudine, reacting for 1 hour, concentrating to the concentration of 45% after the reaction is finished, and carrying out spray drying to obtain the powdery product copper-molybdenum separation inhibitor. The inhibitor prepared by the method is particularly effective for raw ores which are difficult to separate and low in molybdenum content.

Description

technical field [0001] The invention relates to a preparation method of a copper-molybdenum separation inhibitor. The method has a particularly good effect on copper-molybdenum raw materials with low molybdenum content, complex composition and difficult separation. Background technique [0002] Generally, the content of molybdenum is very low. In practice, it is usually enriched in copper concentrate and then separated from copper and molybdenum. Conventional inhibitors include sodium sulfide, potassium permanganate, sodium cyanide, phosphox, organic inhibitors containing mercapto groups, and pseudoacetylthiourea, among which sodium sulfide is the most common. Sodium sulfide is the main method, but sodium sulfide has disadvantages such as large amount of sodium sulfide used in the production process, high cost, and difficulty in separating low-grade molybdenum-containing raw materials. Potassium permanganate inhibitors are effective against some secondary copper minerals, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 倪习成
Owner 广西浅蓝界面科技有限公司
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