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selected mixed ores fed to a 5,100 metric ton per day Production at the Molyoxide plant ran from July of <br /> processing plant capable of recovering 0.7 kg of molybdenum 1966 to September of 1968. Curtailment of production <br /> per ton of plant feed. The process began with occurred largely due to the plant's interruption of efficiencies <br /> preconcentration following basic classification for tailings in the sulfide milling circuit that processed 40M tons of <br /> that had passed through the sulfide flotation circuit. Fines sulfide ore daily. Obvious additional expenditure was also <br /> were separated in the preconcentration step and pumped as a foreseen as federal environmental legislation of the late <br /> pulp to the oxide plant where the pulp was agitated with 1960's came into play(Voynick, 1996). <br /> sulfur dioxide and sulfuric acid. Desorption tanks were then <br /> used to drive off sulfur dioxide. Air was injected into the Wastes generated from the Molyoxide process <br /> system to reoxidize the dissolved molybdenum allowing it to required special handling. The silt size fraction of the tailing <br /> adsorb onto carbon filters. The carbon filters containing material prevented their incorporation with the slurried and <br /> molybdenum were then subjected to stripping columns using cycloned sulfide tailings deposited on the Tenmile Tailing <br /> a gaseous stream of ammonia(Amax,inc., 1966). Pond (Figure 1). The separate circuits also required separate <br /> water handling to prevent poisoning of one circuit in the <br /> This process produced a solution of ammonium management of another. At the time, Climax was producing <br /> molybdate that was purified and heated to a crystallized form. tin, tungsten,and pyrite as well as molybdenum. Implicit in <br /> Finally,this ammonium molybdate was roasted and converted the development of the oxide ore processing circuit was the <br /> to commercial grade molybdic oxide. The entire Molyoxide need to impound the tailing materials from the process in a <br /> process was complex and sensitive to rather precise control of manner that did not disrupt the handling of other ores and <br /> temperatures,pressures,and volumes. extraction processes at the Climax Mine and Mill. To <br /> accomplish this,Climax constructed an earthen core dam at <br /> eG /� <br /> Climax Mine <br /> .•9 € C <br /> Eagle Park LTenmile Tailing L! r <br /> Reservoir Pond <br /> A <br /> it <br /> N � (CL maw Mine aM m 99 fa ; <br /> 05 0 05 1 Kilometers <br /> ® k ` <br /> Arkansas ever y / <br /> Figure 1. Diagram of the Climax Mine showing locations of the three drainages <br /> and the location of Eagle Park Reservoir <br />