What are the extraction processes of wolframite

Wolframite is a tungsten ore mineral and is mainly composed of tungsten and iron. The extraction processes of wolframite include gravity separation, magnetic separation, flotation, and chemical processing.

1. Gravity separation: Wolframite can be separated by gravity separation methods such as jigging, shaking table, spiral chute, and heavy medium separation. Gravity separation is effective in recovering coarse-grained wolframite, which can improve the recovery rate and reduce the equipment investment.

2. Magnetic separation: Wolframite is a magnetic mineral, and magnetic separation can be used to recover magnetic minerals from wolframite ore. Magnetic separation methods include high-intensity magnetic separation and weak magnetic separation.

3. Flotation: Flotation can be used to separate wolframite from other minerals. The flotation process of wolframite is complex and is often combined with the flotation of other minerals such as cassiterite, scheelite, and sulfide minerals.

4. Chemical processing: Wolframite can also be processed by chemical methods, such as alkali digestion, acid leaching, and reduction roasting. The chemical processing method is mainly used for low-grade wolframite, complex wolframite ores, or wolframite with impurities.

The choice of the extraction process depends on the composition and characteristics of the ore, the particle size distribution, the associated minerals, and the desired final product quality.