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Selective recovery of minerals by flotation

A technology for minerals and sulfide minerals, which is applied in the field of collector beneficiation and can solve the problem of not producing collectors for metallurgical workers and engineers

Inactive Publication Date: 2004-12-15
COMMONWEALTH SCI & IND RES ORG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extensive research and development work on flotation collectors has not resulted in a methodology that will assist metallurgists and engineers in the selection of collectors for the aforementioned mineral separation problems

Method used

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  • Selective recovery of minerals by flotation
  • Selective recovery of minerals by flotation
  • Selective recovery of minerals by flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Embodiment 1: Ore A

[0083] This Australian nickel sulphide ore grades 3.89% nickel, 16.85% iron, 10.42% sulphur, 0.29% copper and 8.66% magnesia. Nickel is mainly pentlandite ((Ni, Fe) 9 S 8 ) form, copper as chalcopyrite (CuFeS 2 ) exists and the main sulfide gangue contains pyrrhotite (Fe 1-x S) and pyrite (FeS 2 ), mainly pyrrhotite. Therefore, the ore contains 5.70% iron sulfide (IS).

[0084] The following usual procedure for the preparation and flotation of ore A is employed:

[0085] Ore A was crushed to pass 1.65 mm, blended and divided into 1000 gram batches using standard methods. Nickel ore charge (1000 g) was mixed with Melbourne tap water (0.5 L) and lime (0.5 g) and ground for 30 minutes at 67% solids by weight in a laboratory mild steel rod mill containing mild steel rods to obtain a weight-based P of 74 µm 80 (80% pass size). At such dimensions, nickel is expected to be well dissociated. Sufficient lime was added to the mill so that the pH o...

Embodiment 2

[0101] Embodiment 2: Ore B

[0102] This Australian copper sulphide ore grades 1.14% copper, 25.48% iron and 5.91% sulphur. Chalcopyrite is the only copper mineral present, and iron sulfide gangue exists as pyrite. Therefore, the ore contains 4.75% pyrite.

[0103] The following usual procedure for the preparation and flotation of ore B is employed:

[0104] Ore B was crushed to -2 mm, blended and divided into 1000 gram batches using standard methods. Copper ore charge (1000 g) was mixed with Melbourne tap water and ground for 30 minutes at 67% solids by weight in a laboratory mild steel ball mill containing mild steel balls to obtain a P of approximately 80 microns by weight. 80 (80% pass size). The ground pulp samples were transferred to a modified 3 liter Denver stainless steel tank and the volume of the pulp was adjusted by adding Melbourne tap water to obtain a pulp density of approximately 26% solids by weight. Stir the slurry at a speed of 1200r.p.m.

[0105] The ...

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Abstract

A method of recovering a target mineral from an ore containing the target mineral and an iron sulphide mineral comprising the steps of: a) grinding the ore to liberate target mineral from the iron sulphide mineral; b) forming a pulp of said ore; c) selecting a collector having the structure as follows: X-R-Y where R is a branched or straight chain hydrophobic hydrocarbon or polyether chain, and X and Y represent metal coordinating functional groups, d) add the collector to the pulp at a concentration at which the target mineral is able to be floated in preference to the iron sulphide mineral; and e) subjecting the pulp to froth flotation. The metal coordinating sulphur based functional groups may be identical or different.

Description

Background of the invention: [0001] The present invention relates to a method of ore beneficiation using froth flotation technology, especially using a collector with two hydrophilic polar head groups. [0002] current technology: [0003] Froth flotation is one of the most widely used separation processes for upgrading ore grades. With the gradual depletion of high-grade, easy-to-handle ore, the mining of lower-grade, more complex and dispersed deposits has become an urgent need. This forces the mineral processing industry to adopt more complex and updated separation techniques to enrich useful minerals. In flotation, the development of more selective collectors is critical to the success of flotation in processing low-grade, refractory ores. [0004] Most, if not all, collectors used in the selective separation of minerals by froth flotation are monochelating ligands. Most of these monochelating ligands are unipolar. They are composed of a single hydrophilic polar head ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/006B03D1/008B03D1/01B03D1/012B03D1/02
CPCB03D1/006B03D1/008B03D1/012B03D1/02B03D1/01B03D2201/02B03D2203/02B03D1/0043
Inventor T·罗佐普洛斯E·J·西尔韦斯特
Owner COMMONWEALTH SCI & IND RES ORG
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