The introduction on waste drilling mud disposal process at a in-situ leaching mine

This paper introduces the engineering practice of rapid and harmless treatment of abandoned drilling mud in a immersed uranium mine, and carries out related tests to evaluate the flocculation and solidification effects. Practice and research have shown that the addition of ferrous sulfate facilitation to the waste drilling mud can effectively speed up the solid-liquid separation of the mud. The curing condition can be achieved within 40 days. The flocculated sediment is solidified by adding the cement curing agent, which can greatly shorten the waste mud. Compared with the traditional natural evaporation and landfill disposal method, the curing efficiency is greatly improved, and the abandoned mud pit is reclaimed in the same year. The method also has good economics. At the same time, it does not produce secondary toxic and harmful substances, and some water resources are reused, which is of great significance for protecting the ecological environment. (authors)