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Flotation method of o-hydroxy aromatic ketoxime as collecting agent in froth flotation and application of o-hydroxy aromatic ketoxime

A technology for pro-hydroxyaromatic ketoxime and hydroxyaromatic ketoxime is applied in the field of flotation in froth flotation, which can solve the problems of collector selectivity and collection capacity not meeting application requirements and the like

Pending Publication Date: 2022-05-27
CHONGQING KOOPPER CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide the application of hydroxyaryl ketone oxime as a collector in froth flotation to solve the problem that the selectivity and collection capacity of hydroxamic acid flotation collectors in the prior art do not meet the application requirements technical problem

Method used

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  • Flotation method of o-hydroxy aromatic ketoxime as collecting agent in froth flotation and application of o-hydroxy aromatic ketoxime
  • Flotation method of o-hydroxy aromatic ketoxime as collecting agent in froth flotation and application of o-hydroxy aromatic ketoxime
  • Flotation method of o-hydroxy aromatic ketoxime as collecting agent in froth flotation and application of o-hydroxy aromatic ketoxime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Flotation experiment

[0032] A copper mine in Africa is a mixed type of oxygen and sulfur, with an oxidation rate of 80-90%. The main useful mineral is malachite, and the raw ore grade is 1.6% copper. The collectors used in this example are: 109 (component is 2-hydroxy-5-ethylpropiophenone oxime (see formula V for structural formula)) and 2-hydroxypropiophenone oxime (see formula VI for structural formula), salicylic hydroxamic acid (see formula IV for structural formula) and octylhydroxime Acid flotation test. The compound synthesis of this scheme mainly adopts the esterification reaction of acid chloride and alkylphenol, followed by rearrangement reaction. Taking formula V as an example, the synthetic method is described, and the reaction of synthetic formula V is specifically as follows:

[0033] The first step esterification reaction (reaction equation see formula V-1)

[0034] Put 1.1 mol of ethyl phenol as a substrate in a four-necked flask and pl...

Embodiment 2

[0051] Embodiment 2: Flotation experiment

[0052] A tungsten mine in the south is scheelite, and the ore grade tungsten is 0.36%. The collector used in this embodiment has: 108 (the composition is 2-hydroxy-5-propyl acetophenone oxime, see formula VII for structural formula), 2-hydroxyacetophenone oxime (see formula VIII for structural formula), benzohydroxamic acid and octyl hydroxamic acid Select a small test and conduct a three-stage test of rough, fine, and sweep (for the experimental process, see figure 2 ). The more detailed operation process is as follows: use a ball mill to add water to the raw ore for ball milling to obtain preliminary pulp. The particle size of coarse ore powder in the preliminary slurry is 200 mesh, and the ore content is 28%. Then, add 50g / t of water glass, 100g / t of lead nitrate and 200g / t of collector to the preliminary slurry, and stir (rotating speed 1600rpm, time 3min, temperature 40°C) to obtain slurry I. After the pulp I has undergon...

Embodiment 3

[0057] Embodiment 3: the experiment of different collectors for the flotation effect of copper ore

[0058] The technological process of this embodiment is basically the same as that of Embodiment 1, the only difference lies in the selection of the collector and the preparation of copper concentrate products from a certain copper mine in Africa. The selection of specific collectors is shown in Table 4.

[0059] Table 4: Flotation indicators of a copper mine in Africa

[0060]

[0061]

[0062] According to the experimental results in Table 4, when the collectors No. 1-5 are used, the froth flotation yield, copper recovery rate and copper grade are all significantly improved. This shows that the compounds represented by the formula I to formula III of this scheme can be used as ideal collectors in the practical operation of ore dressing to improve the quality of concentrate and economic benefits. Moreover, the selection of each group in the compound has a very significa...

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Abstract

The invention relates to the technical field of beneficiation, in particular to a flotation method and application of o-hydroxy aromatic ketoxime serving as a collecting agent in froth flotation. The structural formula of the o-hydroxy aromatic ketoxime is shown as a formula I, a formula II or a formula III. Phenolic hydroxyl groups at the adjacent positions of ketoxime groups can participate in chelation, so that the selectivity to copper is improved, and the copper-iron selectivity similar to that of an extracting agent is achieved; alkyl at the meta-position of ketoxime can provide proper lipophilicity, so that the overall collecting capacity is further enhanced, meanwhile, alkyl at the meta-position has strong defoaming capacity, and the problem that foams are too thick in existing hydroximic acid flotation is solved. According to the technical scheme, the technical problem that the selectivity and collecting capacity of a hydroximic acid flotation collecting agent in the prior art cannot meet application requirements is solved, the hydroximic acid flotation collecting agent is applied to practical operation in the mineral separation field, the recovery rate of copper and the grade of copper ore can be greatly improved, remarkable economic benefits are brought, and the hydroximic acid flotation collecting agent has ideal application value.

Description

technical field [0001] The invention relates to the technical field of beneficiation, in particular to a flotation method and application of hydroxyaromatic ketoxime as a collector in froth flotation. Background technique [0002] Hydroxamic acid is a common flotation collector, and a common one is salicylic hydroxamic acid (see formula IV). These molecules have lower carbon chains and stronger hydrophilicity than extractants, and can be slightly soluble or form emulsions, so they can quickly migrate to the surface of the target mineral in the water phase during froth flotation. Because salicylic hydroxamic acid contains vicinal hydroxyl groups, it can chelate a six-membered ring similar to an extractant during the complexation process of the hydroxime group and copper ions, and the selectivity is high, but there are many hydrophilic groups, which are very hydrophilic. The water is too large, resulting in a low collection capacity, and it is rarely used alone. In addition,...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03B9/00B03D101/02
CPCB03D1/01B03B9/00B03D2201/02
Inventor 倪潇邹潜王兢何龙徐志刚李朝亮喻琼张琼刘进
Owner CHONGQING KOOPPER CHEM IND
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