Ethyl sulfur nitrogen selection of lead-zinc ore

Ethyl xanthate and 2-mercaptobenzothiazole (MBT) are commonly used collectors in the flotation process of lead-zinc ores. Ethyl xanthate is a xanthate-type collector that can effectively capture sulfide minerals such as galena and sphalerite. MBT is a thiol-type collector that has a strong ability to capture metallic ions such as lead and zinc ions. Therefore, the combination of ethyl xanthate and MBT can improve the flotation performance of lead-zinc ores.

In the flotation process of lead-zinc ores, the depressant is also a key factor affecting the flotation effect. Sodium silicate and zinc sulfate are commonly used as depressants. Sodium silicate can form a protective colloid film on the surface of minerals, inhibiting the activation of minerals and preventing the flotation of gangue minerals. Zinc sulfate can form a complex with zinc ions on the surface of minerals, reducing the adsorption of collectors on the surface of minerals and effectively depressing sphalerite.

In addition to the above reagents, pH is also an important factor affecting the flotation performance of lead-zinc ores. In general, the optimal pH range for flotation of lead-zinc ores is 7-9. When the pH is too low or too high, it will affect the stability of the reagents and the surface properties of the minerals, leading to a decrease in the flotation recovery.

Overall, the selection of reagents in the flotation process of lead-zinc ores should be based on the mineral properties and flotation performance, and the optimal reagent combination and dosage should be determined through experiments. In addition, the use of advanced flotation equipment and process control technology can also effectively improve the flotation performance of lead-zinc ores.