Preparation method of pyrite activator

An activator, pyrite technology, applied in solid separation, flotation, etc., can solve problems such as difficult activation, equipment corrosion environment, pollution, etc., to achieve strong adaptability, strengthen activation effect, and eliminate calcium ions

Active Publication Date: 2016-04-06
GUANGXI ZHONGJIN LINGNAN MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of a large amount of lime, the alkalinity and calcium ions of the pulp are too high, and a large amount of hydroxyl groups and calcium ions are adsorbed on the surface of the pyrite, which is strongly inhibited and difficult to activate.
The traditional pyrite activators are inorganic activators such as sulfuric acid, oxalic acid and ammonium carbonate and ammonium sulfate. The principle is to interact with calcium ions. However, due to the high lime content in the tailings, the addition of sulfuric acid and oxalic acid If it is too large, it will cause serious corrosion of equipment and environmental pollution; while inorganic activators such as ammonium acid and ammonium sulfate have limited effects on calcium ions, and the activation effect on pyrite is not good or even ineffective under high alkalinity conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation method of pyrite activator of the present invention, comprises the steps:

[0014] (1) Dissolve copper sulfate in 95°C water and stir properly until the copper sulfate is completely dissolved.

[0015] (2) Add copper sulfate pentahydrate: ammonium sulfate 1:1.6 into the completely dissolved copper sulfate solution by weight, dissolve completely and react for 5-10 minutes.

[0016] (3) After the reaction is complete, lower the temperature and precipitate to about 40°C, pour out the upper liquid, that is, the tail liquid, and dry the precipitated solid to obtain light blue crystals.

[0017] (4) The obtained light blue crystal product and sodium fluorosilicate were subjected to solid phase mixing reaction at a weight ratio of 35:65, and reacted for 30 minutes to obtain a light blue powder product.

Embodiment 2

[0019] This embodiment is an application example of the pyrite activator of the present invention.

[0020] 1. Mineral raw materials:

[0021] Lead-zinc mine in a mine in Guangxi, ore properties: zinc content is 2.17%, lead is 1.5%, and sulfur content is 35%. The main minerals in the ore are galena, sphalerite, pyrite, calcite and quartz. The amount of lime used in lead-zinc flotation is 15kg / t, and the pH of the tailings reaches 12.5. Traditional pyrite activators, such as ammonium bicarbonate, are basically ineffective, and the addition of sulfuric acid is too large, polluting the environment, and its use is restricted.

[0022] 2, medicament system and operating conditions: lead-zinc flotation tailings are concentrated to 45% earlier, slurry is adjusted for 3 minutes, then add pyrite activator 1200g / t of the present invention, act for 5 minutes, then add and collect 300g / t of butyl xanthate, 100g / t of dodecyl mercaptan, act for 3 minutes, add 60g / t of No. 90% recovery in...

Embodiment 3

[0024] This embodiment is another application example of the pyrite activator of the present invention.

[0025] 1. Mineral raw materials:

[0026] A copper-lead-zinc mine in Yunnan, ore properties: copper 0.5%, zinc content 3.21%, sulfur content 21%, lead content 1.05%, silver 30g / t. In the ore, lead mainly exists in galena, zinc mainly exists in sphalerite, sulfur mainly exists in pyrite and a small amount of marcasite and pyrrhotite. The amount of lime used in copper-lead-zinc flotation reaches 15kg / t, the alkalinity of the tailings is too high, and the pyrite is difficult to activate.

[0027] 2, medicament system and operating condition: lead-zinc flotation tailings are concentrated to 45% earlier, slurry is adjusted for 3 minutes, add pyrite activator 1500g / t of the present invention, act for 5 minutes, then add collector Butyl xanthate 400g / t, lauryl mercaptan 120g / t, act for 4 minutes, add foaming agent No. 2 oil 80g / t, first coarse, second fine and second sweep to o...

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Abstract

The invention provides a preparation method of a pyrite activator. The preparation method comprises the following steps: (1) dissolving copper sulfate in water at 95 DEG C and stirring properly until the copper sulfate is dissolved completely; (2) adding copper sulfate pentahydrate and ammonium sulfate in a weight ratio of 1: 1.6 to the completely dissolved copper sulfate solution for complete dissolution and reaction for 5-10 minutes; (3) after the reaction is complete, carrying out cooling precipitation till about 40 DEG C, pouring a supernatant liquid, namely an end solution, and then drying the precipitation solid to obtain light-blue crystals; and (4) carrying out a solid phase blending reaction to the obtained light-blue crystals and sodium fluorosilicate in a weight ratio of 35: 65 for 30 minutes, thereby obtaining a light-blue powdery product, namely the pyrite activator. The activator is capable of realizing activation of pyrites under a high alkalinity condition caused by lime.

Description

1. Technical field [0001] The invention relates to a preparation method of an ore dressing agent, in particular to a preparation method of a pyrite activator. 2. Background technology [0002] In the traditional flotation separation of copper, lead and zinc, a high alkalinity process is generally used, and a large amount of lime is added in the copper and lead-zinc flotation process to suppress zinc minerals and pyrite. Due to the addition of a large amount of lime, the alkalinity and calcium ions of the pulp are too high, and a large amount of hydroxyl groups and calcium ions are adsorbed on the surface of the pyrite, which is strongly inhibited and difficult to activate. The traditional pyrite activators are inorganic activators such as sulfuric acid, oxalic acid and ammonium carbonate and ammonium sulfate. The principle is to interact with calcium ions. However, due to the high lime content in the tailings, the addition of sulfuric acid and oxalic acid If it is too large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/04
CPCB03D1/018B03D2201/02B03D2201/04B03D2203/02
Inventor 董宪久戴晶平许毓海张笃苏振华刘兵钟旭群何晋勇
Owner GUANGXI ZHONGJIN LINGNAN MINING CO LTD
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