How to beneficiate phosphate rock？

The ore sorting process in the phosphate rock beneficiation process. The purpose of the ore sorting process is to realize the enrichment of the dissociated phosphate rock. The sorting process of phosphate rock usually adopts flotation process, and the flotation process of phosphate rock usually includes: single reverse flotation, forward flotation, reverse flotation (positive and reverse flotation), double reverse flotation.

Usually, phosphate rock contains recyclable iron ore and other associated metals. At this time, magnetic separation and other processes can be added to flotation to recover useful associated metals. The common flotation principle processes are: priority flotation process, mixed flotation process, partial mixed flotation process, and equal flotation process. For low-grade phosphate rock, the principle process of mixed flotation is often adopted: phosphate rock and recovered useful minerals are first floated, and then the phosphate rock and useful minerals are separated. This method can save flotation reagents and reduce flotation equipment. The number of units reduces the cost of flotation.

1. Phosphate ore beneficiation process flotation: Utilizing the different surface properties of phosphorus minerals and impurity minerals, using flotation agents to float phosphorus minerals to achieve the purpose of separation. This operation is called positive flotation. Another The first is to make the impurity minerals float and the phosphorus minerals sink, which is called reverse flotation. In order to make the separation more effective, it is often necessary to add inhibitors to inhibit the floating of certain minerals. The phosphorus minerals obtained from the flotation machine The ore pulp can be thickened, filtered and dehydrated to obtain the concentrate.

2. Magnetic separation of phosphate rock beneficiation process: use a magnetic separator to separate and remove the magnetic impurity minerals in the phosphate rock.

3. Photoelectric separation of phosphate rock beneficiation process: use the different colors of phosphorus minerals and impurity minerals to identify them with photoelectric elements, and control the compressed air jet to separate phosphate rock from impurity minerals.

4. Phosphate rock beneficiation process Calcination is used to remove organic matter, carbon dioxide and a part of fluorine in phosphate rock, and the calcining temperature is 400~1 phosphate rock according to different purposes.

5. Phosphate ore beneficiation process Heavy medium separation: use phosphorus minerals and impurity minerals with different densities, choose a medium whose density is between the two, make one mineral float in the medium, and the other sink , to achieve the purpose of separation.