Two-stage reverse flotation process for removal of carbonates and silicates from phosphate ore using anionic and cationic collectors

被引：0

作者：

Abdelkrim Amirech

Mustapha Bouhenguel

Sabri Kouachi

机构：

[1] Constantine 3 University,Applied Chemistry and materials technology Laboratory

[2] Larbi Ben Mhidi University,undefined

来源：

Arabian Journal of Geosciences | 2018年 / 11卷

关键词：

Phosphate ore; Characterization; Fatty acids; Amines; Flotation;

D O I：

暂无

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学科分类号：

摘要：

Phosphate rock contains various gangue minerals including silicates and carbonates which need to be reduced in content in order to meet the requirements of the phosphate industry. Froth flotation has become an integral part of phosphate concentration process. In this study, double reverse flotation was applied to recover apatite from phosphate ore. H3PO4 and CaO were used as phosphate depressants, in acidic and alkaline conditions. Fatty acids and amines were added as carbonate and silicate collectors respectively. An experimental protocol devised to optimize the grade and recovery of phosphate using anionic–cationic method was found effective. Consequently, a required high quality of phosphate concentrate containing 30.1% P2O5 was obtained, with a recovery of 94%. X-ray diffraction and optical microscopy studies were performed to define the main minerals.

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