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Method for preparing zinc oxide ore collecting agent

A zinc oxide ore and collector technology, applied in solid separation, flotation, etc., can solve the problems of insignificant effect, impact on buoyancy, and large impact on buoyancy, and achieve less dosage of chemicals and good selection The effect of resistance and low temperature resistance

Active Publication Date: 2016-12-21
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the proportion of hemimorphite in the recovered minerals is large, the effect of using the above process is not obvious. The reason is that: on the one hand, the buoyancy of hemimorphite is not as good as smithsonite; The proportion of water and silicon has a great influence on its buoyancy; thirdly, there are a small amount of aluminum and iron ions in the hemimorphite in the same shape, which affects its buoyancy. In addition, the fine mud produced in the grinding process also Affect the recovery of zinc oxide

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0013] An example of the preparation method of zinc oxide collector of the present invention comprises the following steps:

[0014] First, methyl oleate and methanolamine were mixed in a molar ratio of 1:1 to obtain solution 1, and then sodium hydroxide with a mass percent concentration of 25% was added to solution 1 at a mass ratio of 1:2, and the temperature was 120 Stir at ℃ for 2 hours to prepare solution 2, then add phosphorus pentoxide to solution 2 at 90°C at a mass ratio of 1:1.5 and stir for 3 hours, and finally add sodium hydroxide with a mass percentage concentration of 20% After neutralization, dry at a temperature of 40°C to obtain the zinc oxide ore collector.

Embodiment 2

[0016] Another example of the preparation method of zinc oxide collector of the present invention comprises the following steps:

[0017] First, methyl oleate and methanolamine were mixed at a molar ratio of 2:3 to obtain solution 1, and then sodium hydroxide with a mass percent concentration of 30% was added to solution 1 at a mass ratio of 2:3, at a temperature of 125°C Stir under the same conditions for 2.5 hours to prepare solution 2, then add phosphorus pentoxide to solution 2 at a mass ratio of 1:2 at 90°C and stir for 3.5 hours, and finally add 25% sodium hydroxide to neutralize Then dry at a temperature of 50°C to obtain the zinc oxide ore collector.

Embodiment 3

[0019] This embodiment is an application example of the zinc oxide ore collector in the flotation of zinc oxide ore.

[0020] 1. Mineral raw materials:

[0021] The zinc content in the ore used is 8.24%, the silicon dioxide content is 10.15%, and the iron content is 8.97%. Phase analysis shows that zinc mainly exists in the form of zinc carbonate, and a small amount of zinc silicate and hemimorphite; gangue minerals It mainly exists in the form of silicate, and some limonite and goethite.

[0022] 2. Flotation agents and operating conditions:

[0023] Sodium hexametaphosphate 300g / t

[0024] Water glass rough selection 1000g / t, scanning 300g / t, selection 100g / t

[0025] Salicylaldoxime roughing 200g / t sweeping 100g / t

[0026] The collector roughing 350g / t sweeping 150g / t

[0027] In the flotation process, after the ore is ground until the mineral monomers are dissociated, sodium hexametaphosphate and water glass are added to disperse and inhibit the gangue minerals, then ...

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Abstract

The invention provides a method for preparing a zinc oxide ore collecting agent. The method comprises the following steps: firstly, mixing oleic acid methyl ester with carbinolamine according to a molar ratio of (1-2):(1-3) to obtain a solution 1, adding sodium hydroxide with mass percentage concentration of 25-30% in the solution 1 according to a mass ratio of (1-2):(2-3), stirring for 2-2.5 h at a temperature of 120-125 DEG C to prepare a solution 2, adding phosphorus pentoxide in the solution at 90 DEG C according to a mass ratio of (1-2):(1.5-4), stirring for 3-3.5 h, and finally adding sodium hydroxide with mass percentage concentration of 20-25% for neutralization, and carrying out drying at a temperature of 40-50 DEG C to obtain the zinc oxide ore collecting agent.

Description

1. Technical field [0001] The invention relates to a preparation method of a zinc oxide ore collector, in particular to a preparation method of a zinc oxide ore collector containing more hemimorphite. 2. Background technology [0002] At present, the recovery of zinc oxide minerals at home and abroad generally adopts sodium sulfide sulfide, and then adds amine collectors for flotation collection. The flotation recovery rate of zinc oxide ore is between 70% and 80%, and the collection effect is relatively good. ideal. However, when the proportion of hemimorphite in the recovered minerals is large, the effect of using the above process is not obvious. The reason is that: on the one hand, the buoyancy of hemimorphite is not as good as smithsonite; The proportion of water and silicon has a great influence on its buoyancy; thirdly, there are a small amount of aluminum and iron ions in the hemimorphite in the same shape, which affects its buoyancy. In addition, the fine mud produ...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D103/04
CPCB03D1/018B03D2201/02B03D2203/04
Inventor 艾光华涂燕琼杨冰罗丽芳蔡鑫
Owner JIANGXI UNIV OF SCI & TECH
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