Abstract
Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade phosphate ore is, hence, of great necessity. Many beneficiation techniques can be employed to upgrade the P2O5 grade of phosphate ores based on their characteristics in chemical composition and texture. The flotation process is most widely applied to balance the P2O5 recovery ratio and cost. In this review, the dominant techniques for the beneficiation of phosphate ores are introduced. Moreover, the factors that affect the flotation of phosphate ore, including the properties of mineralogy, flotation reagents (depressants and collectors) and flotation medium, were systematically analyzed.
Highlights
Phosphate ore is an essential raw material for manufacturing phosphoric industrial products, and it is irreplaceable
Flotation is dominantly used in the beneficiation of phosphate ores while calcination can be feasibly used in when the fuel energy cost is low and the water source is limited
The application of attrition scrubbing and desliming, magnetic separation and gravity separation should be referred to the characteristic of phosphate ores in chemical composition and texture
Summary
Phosphate ore is an essential raw material for manufacturing phosphoric industrial products, and it is irreplaceable. It has been widely utilizing in agriculture, chemical industry, food, pharmacy, etc. Since the low-grade phosphate ores must be pretreated to reach a qualified phosphate concentrate, the beneficiation techniques and reagents become extremely critical to achieve the selective separation of phosphate minerals. This paper comprehensively reviews theprocesses phosphateand beneficiation techniques, reagents thecomprehensively factors affecting corresponding beneficiation reagents are introduced This and paper phosphate flotation, aiming at providing a guideline for the development and utilization of reviews the phosphate beneficiation techniques, reagents and the factors affecting phosphate flotation, phosphate ores in thea future. Aiming at providing guideline for the development and utilization of phosphate ores in the future
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