New phosphate beneficiation technology

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Phosphate ore is widely used in agriculture, chemical industry and other fields. In order to obtain high-grade phosphate concentrate, it needs to be processed. However, there are many types of phosphate ores, so the beneficiation process is also different. At present, flotation is often used as the main process. With the continuous innovation of technology, there are also many new phosphate ore beneficiation processes, such as scrubbing and desludging, gravity beneficiation, roasting-digestion method, chemical beneficiation and gravity-magnetic flotation combination. Let's learn about it together!

1. Phosphate ore scrubbing and desludging process

It is mainly suitable for rich ores with large mud content and easy to be selected, and is not suitable for processing medium and low-grade phosphate ores. Scrubbing and desludging is a pure physical beneficiation process with a simple process and no reagent consumption, so the beneficiation cost is low.

2. Phosphate ore roasting-digestion process

This process has high requirements for the silicon dioxide content in the phosphate ore, which cannot exceed 5%. The working principle of this process is mainly to release the carbon dioxide in the ore by high-temperature roasting of carbonates in the ore, and then add water for digestion. The energy consumption of the roasting and digestion process is high, and there is a problem of removing lime milk.

3. Phosphate ore chemical leaching process

This process can selectively dissolve dolomite in phosphate ore, which is an effective way to remove magnesium oxide. Sulfuric acid is used as the leaching agent during leaching, and the recovery rate of phosphorus pentoxide in the concentrate is low and the production cost is high.

4. Phosphate ore gravity separation process

It mainly uses the different specific gravity of each mineral in the phosphate ore for separation, and has the advantages of fast separation speed and low pollution.

5. Phosphate ore dry electrostatic separation process

It mainly uses the different electrical properties of each mineral in the ore for separation. It belongs to the physical mineral separation method, which has the advantages of simple process and no pollution.

The above is a brief introduction to the new phosphate ore dressing process. The selection of a specific dressing process needs to be based on the properties and characteristics of the original phosphate ore and the budget of the dressing plant itself. The dressing test is an important theoretical and data basis for determining the dressing process. Xinhai Mining recommends selecting a customized dressing plan based on the test results, which can improve the dressing effect and economic indicators.