Lead oxide zinc ore flotation process

1. Sodium oxide sulfide flotation method

The floatability of lead-zinc oxide ore is low, and it is difficult to flotate lead-zinc oxide ore with higher index using conventional collectors. Usually, sulfide-based flotation method is used. Monoxanate flotation and monoamine sulfide flotation.

Sulfide-xanthate flotation: After zinc oxide minerals are sulfurized with sodium sulfide, copper sulfate is added as an activator, and high-grade xanthate collectors are used for flotation. . Sulfide monoxanthate flotation lead oxide zinc ore is suitable for processing lead oxide minerals.

Sulfidation-amine flotation: After zinc oxide minerals are sulfurized with sodium sulfide, fatty amine collectors are used for flotation. The sulfide-amine flotation method of lead-zinc oxide ore is suitable for treating zinc oxide ore containing easily muddy gangue, but its process is complex and requires desliming equipment, and it can only be realized under the conditions of cleaning and activation with a large amount of sulfuric acid.

2. Sulfur sulfide flotation method

Sulfur sulfide flotation uses sulfur powder to sulfide lead-zinc ore. A sulfide film will be formed on the surface of the sulfide mineral. , thereby realizing the separation of lead-zinc oxide ore. However, this process must be realized under high temperature and high pressure conditions, and is rarely used at present.

3. Flocculation and flotation method

Flocculation and flotation of lead oxide zinc ore is to add hydrophobic fine-grained minerals with polymer compounds, stir them vigorously, and then add collectors. flotation. Flocculation and flotation are suitable for the separation of fine-grained lead-zinc oxide ores. However, due to the difficulty and high cost of developing polymer flocculants, they have not been put into practical use yet.

4. Gravity-flotation combined separation method

Due to the special nature of the ore, some lead-zinc oxide ores sometimes use gravity-flotation combined separation process to achieve comprehensive recovery. Useful mineral purposes. Minerals with higher density or magnetic properties are recovered by gravity separation or magnetic separation, or pre-tailing by gravity separation. Heavy flotation combined separation is suitable for ores where the density difference between metal minerals and gangue minerals is relatively large or the minerals are magnetic.

The above is the common lead-zinc ore flotation process. Depending on the nature of the ore and the degree of oxidation, the selected flotation process is also different. Therefore, it is recommended that the mine owner conducts an ore dressing test and passes the test. The report customizes a scientific and reasonable flotation process to improve flotation indicators and reduce economic losses.