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 Posted: Tue 16:53, 18 Jan 2011 Post subject: stivali ugg High zinc tailings wet processing _175 |
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High zinc tailings wet processing
Ore concentrate (Yazd, Iran) isolated. Bacterial inoculation reaction column, there are jarosite and elemental sulfur formation. With the increasing concentration of dissolved iron, the leaching rate of sphalerite tends to increase. Low PH range, microscopic counts of bacteria in the solution tends to increase. In addition, the low pH conditions, the particle size reducing effect of zinc leaching increased. Results show that thermophilic medium to get maximum zinc recovery. For addicted to moderate thermophilic bacteria,[link widoczny dla zalogowanych], reaction column temperature 28oC ~ 42oC, 120 days later, zinc dissolution rate were 72% and 85%. (Zhang Lixia translated * Alcan International, Canada, Arvida Research Centre has been developed to remove the recycled aluminum impurities in the crucible handle the new technology, can effectively remove the alkali metals such as lithium and sodium, the development of the new crucible of aluminum processing technology for aluminum remelting and recovery of production . This new technology including the use of flux to improve the cleanliness and the removal of aluminum alkali metal, this flux is specifically designed to facilitate the effective reactant to diffuse into the melt, and in order to achieve optimal performance. Technology Demonstration of the results with detailed information and data, including measurements of aluminum using PoDFA remove the alkali metal cleanliness and efficiency. Canada Norwich Liss company Jetcleaner clean the equipment to assess the efficiency of this equipment has been put on the market in 2001,[link widoczny dla zalogowanych], the foundry casting pressure rotor technology to provide an alternative. With high-quality aluminum and cleanliness of good growing demand for aluminum, which is required before casting. In addition to the most commonly used technique is the use of gas rotating rotor to process gas bubbles distributed throughout the melt. Alpur Aires is the development of Norwich degassing device. Jetcleaner concept of technology in 1998 and patented by the company foundry, and BON-L device is developed with the given process gas using a static Jet spray nozzle. (Su Hongying translated Li,[link widoczny dla zalogowanych], B. Dabrowski et al using electrochemical measurement, leaching tests, and direct analysis of the selected reaction residue, the alkaline solution of pre-oxidation of pyrite in refractory gold ore from the recovery of gold cyanide to the impact of ��. Ore from TWinCreek, which is the main sulfide minerals pyrite. Found, shaking test, depends primarily on gold cyanidation recovery of pyrite pre-oxidation level. Alkaline solution rate of pyrite oxidation by chronoamperometry analysis and linear sweep voltammetry and other electrochemical method. Pyrite oxidation rate with pH, potential and higher temperature rises. All for the electrochemical determination of alkaline reagent, NaOH, NHOH, Na, CO, and Ca (OH),, on the impact of pyrite oxidation kinetics showed �� similar to. However, TwinCreek refractory gold ores in the pyrite, the results showed that the alkaline pre-oxidation, NaOH and NaCO ~ / Ca (OH). Better than Ca (OH). . Without pre-oxidation,[link widoczny dla zalogowanych], cyanide leaching of gold was only 20% after appropriate pre-oxidation, the gold leaching rate of 70%, while the cyanide consumption from 2.5kg / t down to 1.5kg / t. X-ray diffraction study of the selected pre-oxidation and cyanide residue,[link widoczny dla zalogowanych], these residues for pyrite in the backscattered electron image. X-ray energy dispersive analysis found that the surface of pyrite particles is the reaction product of iron, silicon and calcium compounds, which contain different amounts of sulfur. In addition, partial oxidation of the pyrite surface that there are some fine-grained minerals, such as aluminum and / or potassium minerals. (Zhang Lixia translated Treatment in the northwest of Iran Da13di concentrator flotation tailings produced, containing large amounts of calamine and hemimorphite the form of zinc. ShirinEspiari other outputs of Dandi zinc concentrator tailings were characterized by mineralogical and leaching tests carried out, as several parameters assessing the impact on the dissolution kinetics of zinc �� to. The parameters studied include sulfuric acid concentration, reaction time, temperature and pulp density. Found that the leaching of control by the activation energy 23.5kJ/mol a single rate-limiting step. In order to solve the filtering problem caused by silicate polymerization, add lime as a coagulant. Identified the need for maximum filtration rate best pH, retention time and temperature conditions. (Zhang Lixia translated
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