DUST SUPPRESSION ON THE SURFACES OF STORAGE DEVICE OF TECHNOGENIC MINERAL FORMATIONS

• Main Authors: Golubeva, E.I (Author), Oralova, A.T (Author), Tsoy, N.K (Author), Yetseshkovskaya, .A (Author), Zakharov, A.M (Author)
• Format: Article
• Language: English
• Published: National Academy of Sciences of the Republic of Kazakhstan 2022
• Subjects: Concentrating factory; Dust suppression; Mining enterprise; Waste dump
• Online Access: View Fulltext in Publisher

 The work is devoted to the search and substantiation of the dust suppression method on the beaches of the waste dump at Zhezkazgan concentrating factory 1,2. This work involves the search and substantiation of the optimal methods to reduce the industrial impact of the mining and processing industry on the environment by ensuring dust suppression on the beaches of the tailings dams of the concentration factories. The selected dust reducing reagents were experimentally studied in 400 m2 areas with a single coating. Monitoring of the resulting coverage state showed that the most resistant to mechanical stress, the coating with the maximum thickness on the waste storage surface is formed when using the Nalco Dustbind reagent. To assess the current state of dusting at the waste dump under consideration and the effectiveness of dust suppression, studies were carried out on the content of pollutants in atmospheric air. The concentration in the air of such pollutants as suspended matter, sulfur dioxide, hydrogen sulfide, inorganic dust with a content of 70-20% silicon dioxide, dust PM 2.5 and PM 10 was analyzed. The main type of emissions from the surface of waste is dust (suspended matter); fine-dispersed dust PM 2.5 and less prevails in granulometric composition. The measurements were carried out at 11 points with the maximum coverage of the entire territory of the waste dump and the sanitary protection zone. As a result of measurements, no excess was revealed for any of the analyzed substances. The atomic emission method with inductively coupled plasma, the element composition of the waste dump dust showed the content of 23 chemical elements with it. The obtained research results have practical importance for providing the dust suppression on the waste dumps of concentrating factories. © National Academy of Sciences of the Republic of Kazakhstan, 2022.