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A combined cationic collector for reverse flotation desiliconization of hematite ore

A cationic collector, reverse flotation desiliconization technology, applied in flotation, solid separation, etc., can solve the problems of high energy consumption, large dosage of chemicals, poor fluidity and selectivity, etc., and achieve simple preparation process and low equipment investment Less, easy to use effect

Active Publication Date: 2016-02-03
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, fatty acids are used as collectors for anion reverse flotation, high flotation temperature, high energy consumption, poor selectivity, large dosage of reagents, and the addition of lime-soda mixture complicates the reagent system for anion reverse flotation. Due to the high pH value of the slurry and the use of anionic reagents, the filtration efficiency of the flotation concentrate is very low, and the inhibitor has a poor inhibitory effect on the fine-grained iron ore, resulting in a higher grade of flotation tailings, resulting in iron Serious waste of resources; while cationic collectors have disadvantages such as inconvenient reagent preparation, low flotation efficiency, high foam viscosity, poor fluidity and selectivity

Method used

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  • A combined cationic collector for reverse flotation desiliconization of hematite ore
  • A combined cationic collector for reverse flotation desiliconization of hematite ore

Examples

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Effect test

example 1

[0018] Example 1: Mix hematite pure minerals (TFe68.88%) and quartz pure minerals at a mass ratio of 60:40, and perform flotation according to the following reagent system and process conditions: Cationic collectors for reverse flotation of hematite ore Medium N-dodecyl ethylenediamine: acetic acid: polyethylene glycol = 100:50:100, the dosage of cationic collector for reverse flotation of hematite ore is 200g / t, and the dosage of regulator cornstarch is 150g / t.

[0019] Get mixed ore 100g and add in the flotation machine, the pulp concentration is 40%, according to figure 1 Flotation is carried out in the process shown, and the iron concentrate with an iron grade of 57.23% and an iron recovery rate of 90.64% can be obtained, and the iron grade of the tailings is 10.70%.

example 2

[0020] Example 2: Mix hematite pure minerals (TFe68.88%) and quartz pure minerals at a mass ratio of 60:40, and perform flotation according to the following reagent system and process conditions: Cationic collectors for reverse flotation of hematite ore In N-dodecyl ethylenediamine: acetic acid: n-butanol=100:70:100, the amount of cationic collector for reverse flotation of hematite ore is 200g / t, and the amount of regulator cornstarch is 100g / t t.

[0021] Get mixed ore 100g and add in the flotation machine, the pulp concentration is 40%, according to figure 1 Flotation is carried out in the process shown, and the iron concentrate with an iron grade of 57.44% and an iron recovery rate of 90.02% can be obtained, and the iron grade of the tailings is 11.71%.

example 3

[0022] Example 3: Mix hematite pure minerals (TFe68.88%) and quartz pure minerals in a mass ratio of 60:40, and perform flotation according to the following reagent system and process conditions: N-dodecyl ethyl alcohol in combined cationic collectors Diamine: acetic acid: n-hexanol = 100:60:100, the dosage of cationic combined collector is 200g / t, and the dosage of regulator cornstarch is 100g / t.

[0023] Get mixed ore 100g and add in the flotation machine, the pulp concentration is 40%, according to figure 1 Flotation is carried out in the process shown, and the iron concentrate with an iron grade of 56.23% and an iron recovery rate of 91.58% can be obtained, and the iron grade of the tailings is 10.66%.

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Abstract

The invention discloses a combined cationic collector for reverse flotation desilication of hematite stone, which is characterized in that the cationic collector is prepared from 100 parts of N - dodecyl ethylenediamine used as a main collector, 50 to 70 parts of glacial acetic acid used as a solubilizer, and 100 parts of aliphatic alcohol used a the synergist in parts by weight; the preparation process of the cationic collector comprises the following steps: mixing the N-dodecyl ethylenediamine and the glacial acetic acid according to mass ratio at room temperature, stirring the mixture with the stirring speed of 300 to 1500 rad / min for 3-10 minutes till to be an uniform solution, adding a certain quality of aliphatic alcohol into the solution, and stirring 2 to 3 minutes to obtain the hematite stone reverse flotation desilication combination of cationic collector. Compared with a conventional hematite reverse flotation collector, the collector provided by the invention has the advantages that at room temperature, the floatation effect is good, the foam viscosity is small, and the cost is moderate.

Description

technical field [0001] The invention relates to a collector for reverse flotation desiliconization of iron ore, in particular to a combined cationic collector for reverse flotation desilication of hematite ore, which belongs to the technical field of mineral processing engineering. The combined collector provided by the invention has the characteristics of low production cost, suitable for low temperature flotation and the like. Background technique [0002] my country is rich in iron ore resources, but with the extension of mining, the grade of ore decreases year by year, and the degree of refractory selection continues to increase. In recent years, my country's iron ore resources are poor, fine and miscellaneous. The cost of ore dressing has increased year by year, and it is difficult to produce high-quality iron ore concentrates, which has restricted the development of my country's iron and steel industry to a certain extent. [0003] For refractory lean ore, it is diffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/01B03D1/008B03D101/02
Inventor 刘文刚刘文宝魏德洲张小龙方萍韩聪岳建巍
Owner NORTHEASTERN UNIV LIAONING
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