Enrichment of tin ore

Tin is an important non-ferrous metal widely used in fields such as electronics, military industry, aerospace, etc. Tin ore is the main ore of tin, and its main component is cassiterite (SnO2). The enrichment of cassiterite is one of the Committed step of tin ore. This paper will introduce the enrichment method and process flow of tin ore.

1、 Enrichment of tin ore by gravity separation method

The gravity separation method is one of the commonly used enrichment methods for tin ore. The basic principle is to separate cassiterite from other minerals by gravity according to the density difference between cassiterite and other minerals. The process flow of the re selection method is as follows:

1. Crushing: The collected tin ore is first roughly crushed, and then finely crushed to achieve the appropriate particle size.

2. Washing: Crushed ore is washed through a washing machine to separate cassiterite from other minerals.

3. Flotation: The washed tin ore is floated through a flotation machine to remove the tin ore.

4. Desliming: The flotation cassiterite is deslimed through a desliming machine to remove impurities.

5. Magnetic separation: The deslimed cassiterite is magnetically separated through a magnetic separator to further remove impurities.

6. Refloatation: The magnetically separated cassiterite is refloated to improve its grade.

7. Dehydration: The flotation cassiterite is dehydrated through a dehydrator to achieve a suitable moisture content.

8. Drying: Dry the dehydrated cassiterite through a dryer to achieve a suitable moisture content.

2、 Enrichment of tin ore by electric separation method

Electric separation method is another commonly used method for tin ore enrichment. The basic principle is to separate cassiterite from other minerals through the action of an electric field based on the difference in conductivity between cassiterite and other minerals. The process flow of the electric separation method is as follows:

1. Crushing: The collected tin ore is first roughly crushed, and then finely crushed to achieve the appropriate particle size.

2. Washing: Crushed ore is washed through a washing machine to separate cassiterite from other minerals.

3. Electrical separation: The washed tin ore is separated from other minerals by electrical separation using an electrical separation machine.

4. Desliming: The selected cassiterite is deslimed through a desliming machine to remove impurities.

5. Magnetic separation: The deslimed cassiterite is magnetically separated by a magnetic separator to further remove impurities.

6. Re-electronic separation: The magnetically separated cassiterite is subjected to further electrical separation to improve its grade.

7. Dehydration: The selected cassiterite is dehydrated through a dehydrator to achieve a suitable moisture content.

8. Drying: Dry the dehydrated cassiterite through a dryer to achieve a suitable moisture content.

3、 Summary

The enrichment of tin ore is one of the important steps in tin mining, and its beneficiation methods are diverse. The gravity separation method and the electric separation method are commonly used methods for tin ore enrichment, and their process flow is similar, but the specific operating steps are slightly different. The enrichment operation of tin ore requires strict adherence to the process flow to ensure the grade and yield of tin ore.