3 process steps for phosphate ore dressing

The phosphate beneficiation methods include: washing and dredging, gravity separation, flotation, combined magnetic flotation, etc. Different ore types are suitable for different beneficiation processes.

Only by selecting the appropriate phosphate ore beneficiation process can we obtain phosphate concentrate with high grade, high recovery rate and low cost.

The selection of phosphate ore beneficiation process is mainly based on the properties of the ore. The washing and dredging process is suitable for treating phosphate ore with a high degree of weathering, but the grade and recovery rate of phosphate concentrate are low;

The specific gravity of the main gangue minerals such as calcite, dolomite, and quartz in phosphate ore is similar to that of apatite, and heavy media separation is mainly used. It has little pollution to the environment and is beneficial to coarse-grained phosphate ore, but it is not suitable for processing fine-grained phosphate ore.

Flotation separation is the main method for phosphate ore beneficiation. It is suitable for treating complex and difficult-to-treat phosphate ores, and the final concentrate has a high grade and high recovery rate.

The combined process of gravity and magnetic flotation is suitable for phosphate ore containing useful associated minerals. The ore utilization rate is high, but the beneficiation process is complicated and often requires complex drug removal.

The phosphate ore beneficiation process can be applied to phosphate ores with complex and diverse ore structures, complex mineral occurrence relationships, small particle sizes, close mosaic relationships, common mixed symbiosis, and difficult monomer dissociation. The phosphate ore beneficiation process can be divided into three processes: phosphate ore crushing-separation-concentrate dehydration.

1. The ore crushing process includes crushing, screening, grinding and grading processes. Crusher and ball mill are used to reduce the particle size of the ore to separate the phosphate mineral from the impurity mineral monomer. The degree of grinding depends on the particle size of the phosphate mineral and the impurity mineral.

2. The separation process of phosphate ore usually adopts flotation process. Usually, phosphate ore contains recoverable iron ore and other associated metals. At this time, magnetic separation and other processes can be added during the flotation process. The magnetic impurity minerals in the phosphate ore are separated and removed by a magnetic separator. Recover useful associated metals.

3. Ore dehydration usually includes two processes: concentration and filtration. Concentration generally uses a concentrator, and filtration generally uses a disc filter, which is convenient for the storage and transportation of phosphate ore and other products.

The selection of phosphate ore process scheme needs to be determined according to the product index requirements of phosphate concentrate and the difference in the properties of the original ore. Xinhai designs reasonable phosphate ore crushing and grinding process, ore dressing process, and ore dressing equipment for customers. This can effectively reduce the customer's phosphate ore dressing cost and rationalize the customer's interests.