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Method for flotation of cobalt in fly ash

A fly ash and roughing technology, which is applied in flotation, solid separation, etc., can solve the problems that there are no relevant reports on the technology of extracting cobalt metal, and achieve the effects of high recovery rate, low energy consumption, and low flotation cost

Inactive Publication Date: 2014-04-30
HENAN TIANGANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on the technology of extracting cobalt metal from fly ash

Method used

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  • Method for flotation of cobalt in fly ash

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. Take 1 ton of fly ash and add 3 tons of water, stir evenly in a bucket, transfer to a reaction tank, add 500 grams of water glass, stir for 5 minutes, add 300 grams of sodium humate, operate at a temperature of 32 ° C, and soak for 3 Minutes, transfer to the roughing tank, add 300 grams of collector JR-7, operating temperature 15 ° C, soaking time 10 minutes, carry out two roughings, transfer to the static pressure cyclone flotation column, add 100 grams of foaming Agent EFY-9, the compressed air of 0.5Pa was passed through to float the collected cobalt, carried out four times of flotation, and transferred to the scavenging tank, after two times of scavenging, the tailings were discharged, and the two times of roughing, four times of cobalt After flotation and two times of sweeping, the cobalt-rich fly ash is combined and transferred to the beneficiation tank. After ten times of beneficiation, it is transferred to the drying room for drying. After drying, the ...

Embodiment 2

[0021] Example 2, take 1 ton of fly ash and add 3 tons of water, stir evenly in a bucket, transfer to a reaction tank, add 500 grams of water glass, stir for 3 minutes, add 300 grams of sodium humate, operate at a temperature of 15 ° C, and soak for 5 Minutes, transfer to the roughing tank, add 200 grams of collector JR-7, the operating temperature is 32 ° C, the soaking time is 5 minutes, carry out two roughings, transfer to the static pressure cyclone flotation column, add 150 grams of foaming Agent EFY-9, the compressed air of 0.8Pa was introduced to float the collected cobalt, carried out four times of flotation, and transferred to the scavenging tank, after two times of scavenging, the tailings were discharged, and the two times of roughing, four times of cobalt After flotation and two times of sweeping, the cobalt-rich fly ash is combined and transferred to the beneficiation tank. After ten times of beneficiation, it is transferred to the drying room for drying. After dry...

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Abstract

The invention discloses a method for flotation of cobalt in fly ash. The method comprises the steps that the fly ash and water are mixed uniformly according to the ratio of one to three, water glass and sodium humate are added, stirred and steeped in the mixture, then a collecting agent is added into the mixture, roughing is carried out, the mixture is transferred into a flotation column, a foaming agent is added into the mixture, compressed air is guided into the mixture to carry out floating and scavenging, concentration of ten times is carried out after the fly ash rich in cobalt is processed through roughing of two times, floating of four times and scavenging of two times and then combined, and then the mixture is dried to obtain good fly ash products rich in cobalt. The method has the advantages that the process is simple, the energy consumption is low, the flotation cost is low, the recovery rate is high, the pollution to the environment from exhausted dust, sewage and the like is small, and the generated solid waste can be recycled.

Description

[0001] technical field [0002] The invention relates to a method for preparing metal cobalt, in particular to a method for flotation cobalt from fly ash. Background technique [0003] Cobalt is an important raw material for the production of heat-resistant alloys, hard alloys, anti-corrosion alloys, magnetic alloys and various cobalt salts. The vast majority of cobalt metal in China is associated ore resources. There are very few independent cobalt deposits with low grades, which are all recovered as mine by-products. The extraction process includes pyrometallurgy and hydrometallurgy. Pyrometallurgy has high requirements on ore grade, high cost and resource consumption, and low recovery rate. At present, most enterprises adopt hydrometallurgy to prepare metal cobalt. The ore undergoes crushing-grinding-leaching-extraction and other processes. For example, the name of the invention is: a method for extracting cobalt from copper-cobalt sulfide ore, and the publication number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 张金戏程展军
Owner HENAN TIANGANG IND
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