200341· Manganese–silver ores are typical refractory ores and are not amenable to conventional silver extraction methods. A simultaneous leaching process to extract manganese and silver by one-step leaching in sulfuric acid solution in the presence of hydrogen peroxide is proposed in this paper. Thermodynamic investigations of the Mn–H 2 O and Ag–H 2 O …
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20241023· Silver can be found in many minerals including zinc oxide minerals, but there is no report about its recovery from cold purification cake of zinc. Silver is reported as 80 ppm in this cake in addition of nickel, cadmium, and zinc. The purpose of this research is to determine the unknown kinetical aspects of silver recovery from leaching solution of this filter cake. After …
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420· As an efficient technology of hydrometallurgy, leaching is the most used method to recover silver and other valuable metals. To recover silver from tailings, various reagent systems, including chloride (Zhang et al., 2016), cyanide (Hernandez et al., 2014), thiourea (Li et al., 2012) and thiosulfate (Amaral et al., 2014) media, have been tested. However, cyanide …
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15· SO2 Leaching Followed by Thiourea Leaching Sulfur dioxide leaching was carried out using 0.1 M sodium bisulfite and 0.105 M sulfuric …
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2005101· New experiments on manganese-silver associated ore treated by hydrogen peroxide in the sulfuric acid solution were made. Based on the coexisting conformations of …
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Refractory silver in these ores is either bound by the high-valence manganese, chemically resistent to cyanide leaching, or is rendered inaccessible to cyanide leach solution by the …
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202091· Semantic Scholar extracted view of "Hydrometallurgical recovery of manganese, gold and silver from refractory Au-Ag ore by two-stage reductive acid and cyanidation leaching" by Zhang Kuifang et al.
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198931· Abstract Batch culture experiments showed that manganese could be leached from a manganese-containing silver ore by bacterial strain SSW 22, by a mixed culture derived from unsterilized ore, and by a Penicillium strain isolated from the mixed culture. The extent of leaching was influenced by the kinds of electrolytes and their concentration in the culture …
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199521· It is well known that manganiferous silver ores containing manganese intimately associated with silver are not amenable to conventional extraction methods. The segregation process has been applied primarily to the recovery of copper from oxidized and oxide-sulfide ores. A new alternative process, consisting of segregation roasting followed by flotation to recover …
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225· Conclusions Column-leaching tests were conducted on minus 2.5- plus 1.3-cm ore pieces to evaluate a dual in situ or heap leaching method …
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201691· The two-step process refers to the reductive leaching of manganese followed by a silver extraction process (cyanidation), which has been widely applied in manganese-silver ore treatment.
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2025221· The nature of a manganese–silver ore in Mexico is complicated, providing a reliable basis for formulating a reasonable mineral procurement process, the material composition, destination mineral embedded cloth characteristics and other process parameters were studied by means of chemical composition analysis, optical microscope, scanning …
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201122· The silver-rich residue was the filtrate residue of leaching the manganese from high-manganese silver sulfide concentrate and silver-containing manganese oxide ore with H 2 SO 4 solution, from Fusi Silver Smelting Co. Ltd., in Guangxi, China.
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2017121· A Novel Two-Stage Method of Co-Leaching of Manganese–Silver Ore and Silver-Bearing Pyrite Based on Successive Chemical and Bio Treatments: Optimization and Mechanism Study Article Full-text
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420· As an efficient technology of hydrometallurgy, leaching is the most used method to recover silver and other valuable metals. To recover silver from tailings, various reagent systems, including chloride (Zhang et al., 2016), cyanide (Hernandez et al., 2014), thiourea (Li et al., 2012) and thiosulfate (Amaral et al., 2014) media, have been tested. However, cyanide …
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202072· Article on Hydrometallurgical recovery of manganese, gold and silver from refractory Au-Ag ore by two-stage reductive acid and cyanidation leaching, published in Hydrometallurgy 196 on 2020-07-02 by Kuifang Zhang+4.
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2025221· The nature of a manganese–silver ore in Mexico is complicated, providing a reliable basis for formulating a reasonable mineral procurement process, the material composition, destination mineral embedded cloth characteristics and other process parameters were studied by means of chemical composition analysis, optical microscope, scanning …
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201122· The silver-rich residue was the filtrate residue of leaching the manganese from high-manganese silver sulfide concentrate and silver-containing manganese oxide ore with H 2 SO 4 solution, from Fusi Silver Smelting Co. Ltd., in Guangxi, China.
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113· However, for the Round Mountain ore, silver extraction decreased from 84 to 51 percent with the use of H2SO4. Because much more …
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113· However, for the Round Mountain ore, silver extraction decreased from 84 to 51 percent with the use of H2SO4. Because much more …
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Introduction Either direct flotation or cyanide leaching of Ag-Mn ores usually results in very low silver recovery because silver is either encapsulated or present in the crystal lattice of manganese oxides in the ores (Chase, 1981). To recover silver from these ores specialized extraction techniques are required. Simultaneous leaching of silver and
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Under optimal leaching conditions, the manganese leaching rate reached 98.11%, with a total manganese recovery of 66.70%. The silver leaching rate from manganese leaching residue was 95.61%, with a total silver recovery rate of 52.73%.
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111· The ongoing depletion of gold and silver-containing ore deposits demands a shift towards the processing of more complex sources. Leaching of gold or s…
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201251· A combined novel process was developed to extract valuable metals from manganese–silver ore. The preferential dissolution of manganese from the primary materials was achieved through reductive leaching in dilute sulfuric acid medium with sodium sulfite as the reductant. Silver, which was enriched in the reductive leaching residue, was leached by …
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61· A novel process for the recovery of manganese by EDTA/EDTA–2Na leaching and the recovery of silver by thiosulfate leaching with resultant EDTA–Mn as the catalyst from manganese–silver ores was developed in this study. Initially, insoluble manganese (IV) was reductively leached by EDTA/EDTA–2Na in an aqueous medium, and then silver was …
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201441· The pretreatment step could be described as a reductive sulfating leaching technology to preferentially dissolve the manganese minerals, with silver remaining in the leaching residue for subsequent cyanidation, and the most important finding of the study is that pyrite could be used as a reductant through the process.
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201122· The silver-rich residue was the filtrate residue of leaching the manganese from high-manganese silver sulfide concentrate and silver-containing manganese oxide ore with H 2 SO 4 solution, from Fusi Silver Smelting Co. Ltd., in Guangxi, China.
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The invention discloses a method for recovering manganese and silver from manganese-silver ore: stirring ethylenediaminetetraacetic acid or aminotriacetic acid or their salts and …
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2017121· A Novel Two-Stage Method of Co-Leaching of Manganese–Silver Ore and Silver-Bearing Pyrite Based on Successive Chemical and Bio Treatments: Optimization and Mechanism Study Article Full-text
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