Abstract
Several proven and effective chemical, physical, and biological treatment processes have been developed for the removal and recovery of cyanide from mill tailings and process solutions. These treatment processes are well understood and have been used for years at mine sites worldwide. The purpose of this chapter is to provide background information regarding these cyanide treatment processes, including basic chemistry and reagent uses, common areas of application, and treatment performance that can be expected at full-scale. Emphasis is placed on those treatment processes with proven full-scale success, as well as those processes exhibiting significant potential for specific application at mine sites. Coupled with the description of treatment processes are discussions of water management and effluent discharge strategies.
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