Tin tungsten ore is an important metal ore, mainly used for manufacturing high-strength materials such as tungsten steel and hard alloys. Therefore, the method of selecting tin tungsten ore is of great significance for improving the grade of the ore and reducing production costs. This article will introduce several common methods for selecting tin tungsten ore to help mining enterprises improve ore sorting efficiency.
1. Reselection method
The gravity separation method is a common method for selecting tin tungsten ore, which is based on the weight difference of the ore. The main equipment of the gravity separation method includes vibrating screens, spiral classifiers, gravity separators, etc. The specific operation steps are as follows:
1. After processing the original ore through crushing, grinding, and other processes, it is sent to a vibrating screen for preliminary screening, and coarse ore is separated.
2. Feed coarse ore into a spiral classifier for classification, separating larger ore particles.
3. Feed larger ore particles into the gravity separator for gravity separation, and separate higher grade tin tungsten ore based on the weight difference of the ore.
2、 Flotation method
Flotation method is a method of selecting minerals based on the differences in their hydrophobicity with water bubbles. Its main equipment includes flotation machines, bubble generators, etc. The specific operation steps are as follows:
1. After crushing, grinding and other processes, the original ore is sent to the flotation machine.
2. Add reagents to the flotation machine to form a layer of hydroxide film on the surface of the mineral, increasing its hydrophobicity difference with bubbles.
3. Inject bubbles into the flotation machine through a bubble generator to combine them with the hydroxide film on the mineral surface and float the mineral to the water surface.
4. Collect the floating minerals for subsequent processing to obtain high-grade tin tungsten ore.
3、 Gravity magnetic separation method
The 
gravity magnetic separation method is a method of using the different responses of minerals in magnetic and gravity fields for separation. Its main equipment includes magnetic separators, gravity separators, etc. The specific operation steps are as follows:
1. After crushing, grinding, and other processes, the original ore is fed into a magnetic separator.
2. Add magnetic agents to the magnetic separator to form a magnetic film on the surface of the mineral, increasing its responsiveness in the magnetic field.
3. By the action of a magnetic field, the minerals of the magnetic film are separated from those of the non magnetic film.
4. Feed the separated magnetic membrane minerals into a gravity separator for gravity separation, and separate higher grade tin tungsten ore based on the weight difference of the ore.
In summary, there are various methods for selecting tin tungsten ore, and each method has its own applicable occasions and advantages and disadvantages. Mining enterprises should choose appropriate beneficiation methods based on their own ore characteristics and production needs, improve ore grade and beneficiation efficiency, reduce production costs, and achieve sustainable development.
