Copper sulfide ore flotation collector and preparation method and application thereof

A technology of copper sulfide ore and collector, applied in the field of metallurgy, can solve the problems of high pH and high reaction temperature, and achieve the effects of high yield, good selectivity and mild reaction conditions

Inactive Publication Date: 2017-10-20
JIUJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it has been the focus of people's attention in recent years, and a large number of thiourethane collectors (such as Z-200, ECTC, PAC, etc.) have been synthesized successively, and applied to industrial practice, and have achieved certain results. In actual production, there are still deficiencies in various factors of copper-sulfur separation, such as too high pH, ​​too high reaction temperature, etc. Therefore, the research and development of copper-sulfur separation collectors is still being strengthened, and the development of a collector that can effectively solve various defects in the current separation process Collectors are still very necessary

Method used

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  • Copper sulfide ore flotation collector and preparation method and application thereof
  • Copper sulfide ore flotation collector and preparation method and application thereof
  • Copper sulfide ore flotation collector and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Synthesis of O-propyl-N,N-diethylthiocarbamate

[0039]

[0040] Add 15.80g (0.10mol) sodium n-propyl xanthate and 11.60g (0.10mol) sodium chloroacetate to a 250ml three-necked round bottom flask containing 100.0mL distilled water, and add 4mol / L NaOH solution dropwise to adjust the reaction solution pH=8.0, stirring at 30°C for 2 hours. While stirring, 7.30 g (0.10 mol) of diethylamine was slowly added dropwise, and the mixture was reacted at 30° C. for 3 hours. After the reaction is finished, the turbid liquid is left to stand for stratification, and the oily liquid of the upper layer is the target product, and 8.7g of product is obtained by separation, and the yield is 49.71%. Figure 1a shown. from Figure 1b It can be seen that the NMR data are as follows: 1 HNMRδ: 0.91(t, 3H, CH 2 CH 3 ),1.10(t,3H,CH 2 CH 3 ),1.15(d,3H,CHCH 3 ),1.7(d,2H,CH 2 CH 3 ),3.40(q,2H,NCH 2 CH 3 ),3.75(q,2H,NCH 2 CH 3 ),4.35(m,2H,OCH 2 CH 3 )ppm.

Embodiment 2

[0041] Example 2 Synthesis of O-propyl-N,N-dibutylthiocarbamate

[0042]

[0043] Add 15.80g (0.10mol) sodium n-propyl xanthate and 11.60g (0.10mol) sodium chloroacetate to a 250ml three-necked round bottom flask containing 100.0mL distilled water, and add 4mol / L NaOH solution dropwise to adjust the reaction solution pH=8.0, stirring at 30°C for 2 hours. While stirring, 12.50 g (0.10 mol) of di-n-butylamine was slowly added dropwise, and the reaction was carried out at 30° C. for 3 hours. After the reaction, the turbid liquid was left to stand for stratification, and the oily liquid of the upper layer was the target product, and 20.10 g of product were obtained by separation, and the yield was 87.00%. The content of the product was 69.67% by gas chromatography (GC), specifically as Figure 2a shown. from Figure 2b It can be seen that the NMR data are as follows: 1 H NMRδ: 0.93 (9H, CH 2 CH 3 ),1.30(4H,CH 2CH 3 ),1.65(2H,CH 2 CH 3 ),1.71(4H,CH 2 CH 3 ),3.40(q,2H...

Embodiment 3

[0044] Example 3 Study on flotation performance of thiourethane collector

[0045] The specific flotation process is as follows: image 3 As shown, under the condition of natural pH, after stirring for 2min, add a regulator (such as sodium hydroxide) for 1min, add a collector and stir for 2min, flotation for 2min, the concentration of the collector is 5-10mg / L, and flotation obtains a foam product.

[0046] When the concentration of two collectors of compounds Ia and Ib is 10 mg / L and pH=9, the flotation recovery rate of Ia collector to chalcopyrite is 75.53%, and the flotation recovery rate to pyrite is 15.09%, The copper-sulfur flotation separation effect is better. The flotation recovery rate of Ib collector to chalcopyrite was 66.83%, and the flotation recovery rate to pyrite was 36.72%.

[0047] The collectors shown in Examples 1 to 2 of the present invention have better flotation activity for chalcopyrite and pyrite, and the collecting capacity for chalcopyrite is bett...

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Abstract

The invention provides a copper sulfide ore flotation collector and a preparation method and application thereof. The specific structural formula of the collector is shown in the formula (I) (please see the formula (I) in the specification), wherein R1 and R2 are independent alkyl groups respectively. The preparation method comprises the following steps that sodium chloroacetate and propyl sodium xanthate are subjected to a substitution reaction to produce an intermediate propyl xanthic sodium acetate, organic amine is added to generate an aminolysis reaction with the propyl xanthic sodium acetate, and then a target product is obtained. The invention further provides application of the copper sulfide ore flotation collector in copper sulfide ore flotation and copper sulfide ore recovery. According to the collector, separation of copper sulfide ore and pyrite can be achieved under the low alkaline condition, and copper ore can be effectively recovered.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a copper sulfide ore flotation collector and a preparation method and application thereof. Background technique [0002] Copper sulfide deposits are generally associated with metals, and the main useful minerals in the ore are chalcopyrite, pyrite, pyrrhotite, tetrahedrite, arsenite, chalcocite, bornite, copper Blue, etc., are associated with molybdenite, gold, silver and other beneficial minerals, indium, gallium, germanium, cadmium, rhenium, thallium and other rare dispersed elements, as well as cobalt, bismuth, sulfur and other elements, the economic value of these associated elements is higher than The comprehensive utilization of these elements is a major measure to improve the economic benefits of mines. [0003] In the practice of copper-sulfur flotation separation, thiourethane is a type of highly selective collector that is widely used, and its ability to...

Claims

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Application Information

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IPC IPC(8): B03D1/012B03D101/02B03D103/02
CPCB03D1/012B03D2201/02B03D2203/02
Inventor 曹飞孙德四周德志
Owner JIUJIANG UNIVERSITY
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