منابع مشابه
CODELCO, Chile Programs Its Copper-Smelting Operations
CODELCO’s Chuquicamata Copper Smelter, located in Chile, must meet an environmental standard established in 2002 that limits the sulfur emissions from the copper-production process. This regulation placed new restrictions on the production process, and consequently the heuristic criteria based on years of operator experience no longer resulted in high production levels. We developed a model to ...
متن کاملRecirculation of Chilean Copper Smelting Dust with High Arsenic Content to the Smelting Process
Most of the dust generated from the copper smelting process in Chili has been stored after the stabilization by hydrometallurgical process because it contains high concentration of arsenic. However, in recent years, the generation of dust has increased because of degrading the quality of concentrate. In addition, the environmental regulations become stricter. On the other hand, valuable metals ...
متن کاملApplication of Phytoremediation to Reduce Environmental Pollution of Copper Smelting and Refinery Factories: a Review
Copper smelting and refinery factories are the final stages of a pyrometallurgical processing chain, and they cause many environmental challenges around the world. One of the most common environmental problems of these factories is toxic emissions. These toxic gases have harmful effects on the vegetation, animal species, soils, and water resources around the factories. Phytoremediation can play...
متن کاملFly ash-mediated formation of polychlorinated naphthalenes during secondary copper smelting and mechanistic aspects.
Thermal experiments (at 250-450 °C for 10-240 min) on fly ash from secondary copper smelting process (SeCu) were performed to study the polychlorinated naphthalene (PCN) formation in the post-zone of a secondary copper smelter. Unexpectedly high concentrations of PCNs were formed. Total PCN concentrations and toxic equivalents were 47-104 and 44-80 times higher than the initial concentration an...
متن کاملEnvironmental legacy of copper metallurgy and Mongol silver smelting recorded in Yunnan Lake sediments.
Geochemical measurements on well-dated sediment cores from Lake Er (Erhai) are used to determine the timing of changes in metal concentrations over 4500 years in Yunnan, a borderland region in southwestern China noted for rich mineral deposits but with inadequately documented metallurgical history. Our findings add new insight into the impacts and environmental legacy of human exploitation of m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materia Japan
سال: 1994
ISSN: 1340-2625,1884-5843
DOI: 10.2320/materia.33.1459