نتایج جستجو برای: copper ore
تعداد نتایج: 92137 فیلتر نتایج به سال:
چکیده ندارد.
BAKIR İÇEREN SİYANÜR LİÇİ ÇÖZELTİLERİNDEN ALTININ SEÇİMLİ OLARAK KAZANIMINDA ADSORBANLARIN ETKİNLİĞİ
Recovery of gold from copper-rich ores has proved challenging. Dissolved copper in cyanide-deficit leach solutions severely interferes with adsorption resulting low recoveries onto activated carbon or ion exchange resins. This study reports the efficiency different adsorbents for selective recovery copper-containing cyanide leachate. Activated (NORIT GAC 1240), mixed base (Purogold A193), stron...
Copper oxide ore is an important copper resource. For a certain in Yunnan, China, experiments have been conducted on the grinding fineness, collector dosage, sodium sulfide inhibitor and activator dosage. The results showed that, by controlling above conditions, better flotation indices of are obtained. Additionally, ammonium bicarbonate ethylenediamine phosphate enhanced ore, whereas combined ...
This article investigates the effect of material size on efficiency flotation concentration gold-copperarsenic ores Taror deposit (Republic Tajikistan) and studies dependence gold recovery duration process with purpose developing an alternative technological scheme for processing this ore type. According to X-ray phase analysis, samples consist rock-forming minerals by 92%. Ore mineralization i...
The study of a well-preserved crucible fragment from the Middle Kingdom Egyptian fortress in Buhen lower Nubia revealed unexpected presence numerous prills very arsenic- and nickel-rich copper alloy what looks like smelting slag. Based on optical scanning electron microscopy polished section, this paper discusses potential metallurgical process that was carried out type crucible. Strongly reduc...
Over the past decade both labor and multifactor productivity have fallen in copper, iron ore, coal, and many other mining operations, causing production costs to rise. This decline, following years of rising productivity, has led many to conclude that new technology can no longer offset the adverse effects of resource depletion. As a result, real mineral commodity prices will be permanently hig...
This paper describes native gold in ore-bearing breccias with realgar-orpiment cement from the Vorontsovskoe deposit (Northern Urals, Russia). Particular attention is paid to morphological features of and its relation other minerals. The latter include both common (orpiment, barite, pyrite, prehnite, realgar) rare species (Tl Hg sulfosalts, such as boscardinite, dalnegroite, écrinsite, gillulyi...
Remote sensing plays an important role in mineral exploration. One of its proven applications is extracting host-rock lithology and alteration zones that are related to porphyry copper deposits. An Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) was used to map the Baogutu porphyry deposit alteration area. A circular alteration mineral zoning pattern was clearly observed ...
Abstract Microwave irradiation is a potential technology for use in rock fracturing. It of great significance the application microwave metal mines to understand cracking characteristics ores and mechanism action ores. Taking Hongtoushan copper ore, Sishanling iron Dandong gold ore as research objects, with different morphologies (bulk/particle samples) particle sizes were investigated. The was...
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