The crushing and processing technology of metal tungsten ore with an annual output of about 3 million tons

The crushing and processing technology for a metal tungsten ore with an annual output of about 3 million tons involves a series of steps to extract the tungsten from the ore. Here is an overview of the process:

1. Mining: The first step is to mine the tungsten ore from the deposit. This is typically done through open-pit or underground mining methods, depending on the size and depth of the deposit.

2. Crushing: Once the ore is extracted, it is transported to the crushing plant. In the crushing plant, the ore is crushed into smaller particles to facilitate further processing. This is typically done using jaw crushers, cone crushers, and impact crushers.

3. Grinding: After crushing, the ore is ground into a fine powder using ball mills or rod mills. This step is necessary to liberate the tungsten minerals from the gangue minerals and to achieve a suitable particle size for beneficiation.

4. Mineral processing: Then, the ore after mineral processing is processed to separate tungsten minerals from gangue minerals. This usually uses flotation, gravity separation, or magnetic separation methods. Flotation is the most commonly used method, which mixes ore with water and chemicals to form a slurry. Then, tungsten minerals are separated from gangue minerals through flotation.

5. Concentration: The tungsten concentrate is further concentrated after beneficiation to increase the tungsten content. This usually uses concentration methods such as magnetic separation to complete flotation or leaching.

6. Roasting: The concentrated tungsten is then roasted to remove any sulfur and arsenic impurities. This step is necessary to ensure the quality of the final tungsten product.

7. Reduction: After roasting, the tungsten is reduced to its metallic form. This is typically done using hydrogen reduction or carbon reduction methods.

8. Purification: The reduced tungsten is then purified to remove any remaining impurities. This is typically done using electrolysis, where the tungsten is dissolved in an electrolyte and then deposited onto a cathode.

9. Casting: The purified tungsten is then cast into bars, rods, or other desired shapes.

10. Marketing: The final tungsten products are then marketed and sold to various industries, such as the aerospace, automotive, and electronics industries.

Overall, the crushing and processing technology for metal tungsten ore with an annual output of about 3 million tons involves a series of steps to extract and purify the tungsten from the ore. This process requires careful planning and management to ensure the efficient and sustainable production of tungsten products.