In the mining and beneficiation fields, polyacrylamide (PAM) is mainly used as an efficient flocculant. It helps achieve high solid-liquid separation, treat wastewater, recover resources, and protect the environment.
Main functions
Solid-liquid separation: During the beneficiation process, a large amount of wastewater containing slag will be produced. Polyacrylamide can cause the sludge and impurities in the wastewater to quickly coagulate and precipitate, achieving the separation of water and slag.
Improving recovery rate: It can increase the recovery rate of minerals such as gold and improve the dispersion effect of auxiliary agents, thereby increasing the utilization rate of the agents.
Tailings treatment: When treating tailings, it can help the tailings slurry quickly concentrate and precipitate, making the tailings easier to store and reducing the risk of wastewater seepage from the tailings pond, thus protecting the surrounding environment.
Saving water resources: The recycled clean water can be reused, saving precious water resources.
How to select and use
Selection is key: Polyacrylamide has various types such as anionic, cationic, non-ionic, and amphoteric. In the treatment of beneficiation wastewater, usually anionic or non-ionic types are selected. However, no single type can solve all problems. It is necessary to choose based on the specific nature of the wastewater in your mine (such as pH value, suspended solids content, whether it contains oil, etc.).
Conduct small-scale tests first: It is recommended to take a small amount of wastewater for laboratory small-scale tests. Through experiments, determine the most suitable type and dosage of polyacrylamide to achieve the best effect and reduce costs.
Correct dissolution: Dissolve polyacrylamide with clean tap water. The dissolution ratio is usually 0.1% to 0.3%. The water temperature should not be too high, generally maintained at around 30°C, and not exceeding 60°C to avoid degradation of the agent.
Uniform addition: Add the dissolved agent solution uniformly to the treatment water through equipment such as a metering system to ensure full mixing. Use: When treating beneficiation wastewater containing heavy metal ions, consider combining polyacrylamide with coagulants such as polyaluminum chloride or heavy metal capture agents to improve the treatment effect and avoid secondary pollution.