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Two-stage reagent removal method for ilmenite flotation concentrate

A technology for flotation concentrates and ilmenite, which is applied in flotation, solid separation, etc., can solve the problems of production process and surrounding environment deterioration, and achieve the effects of good drug removal effect, complete drug removal, and easy production

Active Publication Date: 2017-04-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the subsequent industrial drying process of ilmenite concentrate (drying temperature is 600-1000°C), the residual chemicals are violently volatilized and burned at high temperature, resulting in the formation and emission of a large amount of harmful gases, leading to the deterioration of the production process and the surrounding environment. had a large negative impact

Method used

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  • Two-stage reagent removal method for ilmenite flotation concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 Shown, the two-stage drug-removing method of this ilmenite flotation concentrate, its concrete steps are as follows:

[0024] (1) The first stage of drug removal: the ilmenite flotation concentrate (the concentrate contains TiO 2 45.0wt%, TFe32.6wt%, the main minerals are ilmenite (88.4wt%), titanium magnetite (2.5wt%), (magnetic) pyrite (content 2.6wt%), the rest of the gangue minerals are titanium Pyroxene, plagioclase and amphibole are the main ones. The amount of collector sodium oleate used in flotation is 3000g / t, and the amount of diesel oil is 500g / t). After adjusting the pulp concentration to 25% (m / v), Add 1500g / t sodium hydroxide to adjust the pH to 11-12, then add 2000g / t ferric sulfate and stir thoroughly for 15 minutes, then filter to obtain a stage of drug-free ilmenite flotation concentrate;

[0025] (2) The second stage of drug removal: After adjusting the pulp concentration to 20% of the first stage of drug-free ilmenite flotation co...

Embodiment 2

[0028] Such as figure 1 Shown, the two-stage drug-removing method of this ilmenite flotation concentrate, its concrete steps are as follows:

[0029] (1) The first stage of drug removal: the ilmenite flotation concentrate (the concentrate contains TiO 2 46.5wt%, TFe33.5wt%, the main minerals are ilmenite (89.2wt%), titanium magnetite (2.8wt%), (magnetic) pyrite (content 1.9wt%), the rest of the gangue minerals are titanium Pyroxene, plagioclase and hornblende are the main ones. The amount of collector sodium oleate used in flotation is 3500g / t, and the amount of diesel oil is 800g / t). After adjusting the pulp concentration to 30% (m / v), Add 1800g / t of sodium hydroxide to adjust the pH to 11-12, then add 2200g / t of ferric sulfate and stir thoroughly for 18 minutes, then filter to obtain a stage of drug-free ilmenite flotation concentrate;

[0030] (2) The second stage of drug removal: After adjusting the pulp concentration to 25% of the first stage of drug-free ilmenite flota...

Embodiment 3

[0033] Such as figure 1 Shown, the two-stage drug-removing method of this ilmenite flotation concentrate, its concrete steps are as follows:

[0034] (1) The first stage of drug removal: the ilmenite flotation concentrate (the concentrate contains TiO 2 47.8wt%, TFe32.9wt%, the main minerals are ilmenite (90.4wt%), titanium magnetite (2.2wt%), (magnetic) pyrite (content 2.1wt%), the rest of the gangue minerals are titanium Pyroxene, plagioclase and hornblende are the main ones, the amount of collector sodium oleate used in flotation is 4000g / t, and the amount of diesel oil is 1000g / t) After adjusting the pulp concentration to 35% (m / v), Add 2000g / t of sodium hydroxide to adjust the pH to 11-12, then add 2500g / t of ferric sulfate and stir for 20 minutes, then filter to obtain a stage of drug-free ilmenite flotation concentrate;

[0035] (2) The second stage of drug removal: After adjusting the pulp concentration to 22% of the first stage of drug-free ilmenite flotation concen...

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Abstract

The invention relates to a two-stage reagent removal method for ilmenite flotation concentrate and belongs to the field of mineral processing engineering. The two-stage reagent removal method for the ilmenite flotation concentrate includes the following specific steps of first-stage reagent removal, wherein after the slurry concentration of the ilmenite flotation concentrate is adjusted, sodium hydroxide is added, the pH value is adjusted to be 11 to 12, ferric sulfate is added, the materials are fully stirred for 15-20 min, filtering is carried out, and the ilmenite flotation concentrate obtained after first-stage reagent removal is obtained; and second-stage reagent removal, wherein after the slurry concentration of the ilmenite flotation concentrate obtained after first-stage reagent removal is adjusted, sodium hypochlorite and aluminum sulfate are sequentially added, the materials are fully stirred for 15-20 min, and then the final reagent-removed concentrate is obtained. The method aims at the ilmenite flotation concentrate obtained with sodium oleate and diesel oil as a collecting agent, the reagent removal effect is complete, the process is simple, and high adaptability is achieved.

Description

technical field [0001] The invention relates to a two-stage drug removal method for ilmenite flotation concentrate, which belongs to the field of mineral processing engineering. Background technique [0002] When the flotation process is adopted in the mineral processing industry, useful minerals are often produced in large quantities in the form of flotation concentrates, and the particle surfaces of the flotation concentrates adsorb a large number of collectors, foaming agents and other organic chemicals. It is firmly adsorbed on the surface of fine-grained minerals by various forces, and it is extremely difficult to desorb. During the subsequent high-temperature drying process of the concentrate, a large amount of flotation reagents adsorbed in the concentrate will be volatilized or burned in the form of flue gas, which is harmful to production and The surrounding environment has caused serious pollution. [0003] The commonly used methods for removing drugs from flotati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/08
CPCB03D1/082
Inventor 谢海云高利坤张光伟邓清华胡厚勤李金童雄叶群杰
Owner KUNMING UNIV OF SCI & TECH
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