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Application method of 2-ethyl-2-hexenealdoxime in mineral flotation

An application method, mineral flotation technology, applied in flotation, solid separation, etc., can solve problems such as unseen

Active Publication Date: 2014-09-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2-Ethyl-2-hexenaldoxime molecule has a hydrophobic carbon chain with a suitable number of carbon atoms (6 carbon atoms in the main chain, with an ethyl group at the α-position), and more importantly, a carbon chain at the α-position The carbon-carbon double bond and the carbon-nitrogen double bond of the oxime group form a conjugated system. Compared with the traditional saturated aliphatic aldoxime, it shows some unique properties. It can be used as a spice and sweetener, etc., but it has not been used in Report on Flotation Collectors for Copper, Tungsten and Tin Ore

Method used

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  • Application method of 2-ethyl-2-hexenealdoxime in mineral flotation
  • Application method of 2-ethyl-2-hexenealdoxime in mineral flotation
  • Application method of 2-ethyl-2-hexenealdoxime in mineral flotation

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Experimental program
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Effect test

Embodiment 1

[0028] Application of embodiment 1,2-ethyl-2-hexenal oxime in copper sulfide ore flotation

[0029] The copper grade of a copper sulfide ore is 0.38%, the amount of lime is 1200g / t, the ore is ground to 65% and less than 200 mesh, and placed in a flotation tank, at a pH value of 8.5, the amount of foaming agent for No. 2 oil is 20g / t, 2- Flotation is carried out under the condition of ethyl-2-hexenaldoxime dosage of 50g / t, the flotation process flow chart is attached figure 2 . Table 1 shows the results of the flotation comparison experiment between the 2-ethyl-2-hexenaldoxime collector and the commonly used butyl xanthate collector in the present invention. It can be seen from the table that the flotation recovery rate of 2-ethyl-2-hexenaldoxime for copper sulfide ore is 2.47 percentage points higher than that of traditional butyl xanthate.

[0030] Table 1 Comparative experiment results of collector flotation copper sulfide ore

[0031] Collector

Embodiment 2

[0032] Embodiment 2, the application of 2-ethyl-2-hexenal oxime in sulfide-copper oxide ore flotation

[0033] The oxidation rate of a sulfide-oxidized copper ore is about 30%, the copper grade is 1.08%, the ore is ground to 75% and less than 200 mesh, and 80g of 2-ethyl-2-hexenaldoxime is added to the ore per ton in the first stage of roughing, Foaming agent No. 2 oil 28g, 2-ethyl-2-hexenaldoxime 30g per ton of ore feed for the second stage roughing, 14g of foaming agent No. Base-2-hexenaldoxime 30g, foaming agent No. 2 oil 14g, carry out the second roughing, the second selection, the first sweeping flotation experiment, the flotation process flow chart is attached image 3. Table 2 shows the results of the flotation comparison experiment between the 2-ethyl-2-hexenaldoxime collector and the commonly used butyl xanthate collector in the present invention. It can be seen from the table that the flotation recovery rate of 2-ethyl-2-hexenal oxime for copper sulfide-copper oxid...

Embodiment 3

[0036] Embodiment 3, the application of 2-ethyl-2-hexenal oxime in scheelite flotation

[0037] A high-sulfur scheelite ore WO 3 The grade is 0.46%, and the ore is ground until 80% is less than 200 meshes. First, desulfurization flotation is carried out. For desulfurization flotation, 40g butyl xanthate, 10g butylamine black medicine, and 36g foaming agent No. 2 oil are added to the ore per ton, and then Add 3000g of sodium carbonate, 2500g of water glass, 400g of 2-ethyl-2-hexenaldoxime per ton of ore for roughing flotation of scheelite, add 200g of 2-ethyl-2-hexene per ton of ore for sweeping For aldoxime, add 500g of water glass per ton of ore for the first selection, and add 300g of water glass per ton of ore for the second selection. The flotation process flow chart is attached Figure 4 . After a rough selection, a sweep, and two selection operations, WO will be obtained 3 Tungsten rough concentrate with a grade of 10.59% and a recovery rate of 86.27%. Table 3 shows ...

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Abstract

The invention provides an application of 2-ethyl-2-hexenealdoxime serving as a new collecting agent in mineral flotation. The collecting agent has a high collecting capacity for copper sulfide ore, copper sulfide-copper oxide ore, tungsten ore and tin ore; the appropriate flotation pulp pH ranges from 8 to 13; when the collecting agent is used as a sulfide ore flotation collecting agent, the dosage ranges from 30g / t to 200g / t; and when the collecting agent is used as an oxidized ore flotation collecting agent, the dosage ranges from 200g / t to 1,500g / t. By virtue of good hydrophobic group structure and collecting selectivity, 2-ethyl-2-hexenealdoxime has strong collecting acting force and good hydrophobic floating capacity for targeted ore, and is suitable for treating fine grained ore which is difficult to select; and when the copper sulfide-copper oxide ore is in flotation, the flotation can be performed without adding a sulfurizing reagent such as sodium sulfide and the like.

Description

technical field [0001] The invention relates to the application of 2-ethyl-2-hexenaldoxime, a branched alpha, beta-unsaturated fatty aldoxime, as a collector in the flotation of copper ore, tungsten ore and tin ore. Background technique [0002] In the flotation process of minerals, the key to improving the flotation index and exerting economic benefits is to study new high-efficiency, environment-friendly and low-cost flotation collectors. Traditional copper sulfide collectors mainly include xanthate, black medicine and thiourethane. N-butyl xanthate is a very widely used copper ore flotation collector. In addition, cyclohexyl, sec-butyl, sec-octyl, isobutyl and assorted xanthyl can replace n-butyl xanthate. When using xanthate flotation, in order to improve its selectivity, lime is usually used to keep the pH of the pulp between 9 and 12. The advantages of xanthate collectors are strong collection capacity and low price, but the disadvantages of xanthate such as no foami...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/01B03D1/02B03D101/02
Inventor 钟宏许海峰王帅黄志强刘广义曹占芳
Owner CENT SOUTH UNIV
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