Characterization and treatment of artisanal gold mine tailings

Characterization and dewatering of flotation technological tailings

“…The water and fines pass upwards through the vortex finder (3) into the overflow, and are discharged away through the overflow pipe (4). The key to the success of the Linatex Separator lies in the discharge regulator (fishtail) (5), which is fitted below the spigot on the underflow.…”

“…The treatment and disposal of tailings pose enormous challenges that require a multidisciplinary study approach [2][3][4].…”

Environmental assessment and management of metal-rich wastes generated in acid mine drainage passive remediation systems

“…This procedure is commonly employed to indicate if a waste is hazardous or not regarding to the regulated limits of certain organic and inorganic pollutants in USA [30][31][32], although from the inorganic pollutants covered by this procedure only As, Ba, Cd, Cr, Ni and Pb are expected to be found in the DAS-type wastes. According to the obtained concentrations for As, Ba, Cd, Cr, Ni and Pb after the TCLP leaching test ( Fig.…”

International guidelines on mercury management in small-scale gold mining

“…Measure 10 is proposed with the view that, in any given context, local gold extraction workers, mine owners, land owners and others in the community ultimately should discuss these elements to collectively come to decisions about safe tailings managementboth the specific methods and the particular location. De Andrade Lima et al [79] explain that ''the study of the nature of solid wastes found in artisanal gold mines is relevant because it can aid the development of specific clean up or immobilization techniques'' (p. 748), and they outline some of the different chemical interactions that depend on local ore composition in Brazil. Veiga and Meech [80] also review different clean-up techniques and remedial procedures for mercury pollution in artisanal gold sites, including multiple mercury-removal procedures.…”