Tin ore beneficiation method

Tin ore beneficiation method

Tin is an important metal, which is widely used in military, aviation, aerospace, electronics, machinery and other fields. Tin ore refers to the ore containing tin element. Its main minerals are cassiterite, cassiterite, tin Pyrite, etc. Tin ore beneficiation refers to the process of separating useful minerals from tin ore to obtain high-purity tin products. This article will introduce several common tin ore beneficiation methods.

1、 Reselection method

The gravity separation method is a method of separating minerals of different densities from tin ore through the action of gravity, centrifugal force, water flow, and other forces. This method is suitable for ores with high tin content such as cassiterite and white cassiterite. The operating steps of the reselection method are as follows:

1. Crushing: Tin ore is crushed through equipment such as crushers and ball mills to achieve appropriate particle size.

2. Grading: The crushed tin ore is graded through equipment such as a screening machine and cyclone separator for the next step of sorting.

3. Sorting: The graded tin ore is sorted through a gravity separator to separate minerals with higher tin content.

II. Flotation method

Flotation method is a method of separating minerals with different properties by utilizing the physical and chemical properties of the mineral surface to generate different buoyancy forces at the gas-liquid interface. This method is suitable for tin Pyrite and other ores with low tin content. The operation steps of the flotation method are as follows:

1. Crushing: Tin ore is crushed through equipment such as crushers and ball mills to achieve appropriate particle size.

2. Mixing: Mix the crushed tin ore with the reagent to change the physical and chemical properties of different mineral surfaces.

3. Stirring: The mixed tin ore is stirred through a mixer, causing bubbles on the mineral surface to react with the agent, thereby separating minerals with higher tin content.

3、 Magnetic separation method

The magnetic separation method is a method that utilizes the different reaction properties of minerals to the magnetic field, causing different minerals to undergo different movements and separate in the magnetic field. This method is suitable for ores with a high content of iron minerals such as cassiterite. The operating steps of magnetic separation method are as follows:

1. Crushing: Tin ore is crushed through equipment such as crushers and ball mills to achieve appropriate particle size.

2. Mixing: Mix the crushed tin ore with the agent to magnetize the surface of the iron containing mineral.

3. Magnetic separation: The mixed tin ore is magnetically separated through a magnetic separator, allowing iron containing minerals to be magnetically adsorbed and separated.

4、 Electroselection method

The electric separation method is a method of separating different minerals by utilizing their different trajectories in an electric field. This method is suitable for tin ore containing a large amount of sulfides and oxides. The operating steps of the electric separation method are as follows:

1. Crushing: Tin ore is crushed through equipment such as crushers and ball mills to achieve appropriate particle size.

2. Mixing: Mix the crushed tin ore with the agent to make the surface containing sulfides and oxides charged.

3. Electric separation: The mixed tin ore is electrically separated through an electric separator, causing charged minerals to undergo different motion trajectories in the electric field.

summary

There are various methods for tin ore beneficiation, including gravity separation, flotation, magnetic separation, and electrical separation. Different tin ores are suitable for different beneficiation methods. During the beneficiation process, attention should be paid to controlling the type and dosage of reagents to ensure the beneficiation effect. At the same time, it is necessary to strictly control the discharge of wastewater and waste residue during the beneficiation process to protect the environment.

Tin ore beneficiation method