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Consolidation mechanism of gold concentrates containing sulfur and carbon during oxygen-enriched air roastingQian Li,Fang-zhou Ji,Bin Xu,Jian-jun Hu,Yong-bin Yang,Tao JiangSchool of Minerals... concentrates containing sulfur and carbon when the initial temperature is greater than 600?C. To determine the phases that caused consolidation,gold concentrates were roasted under different conditions......
Enhancing room-temperature thermoelectric performance of n-type Bi2Te3-based alloys via sulfur alloyingFeng Liu,Ye-Hao Wu,Qi Zhang,Tie-Jun Zhu,Xin-Bing ZhaoState Key Laboratory of Silicon Materials... through manipulating intrinsic point defects by sulfur alloying.Sulfur alloying significantly decreases antisite defects concentration and suppresses donor-like effect,resulting in optimized carrier......
with positive correlation to the ferric ion concentration. The activation energy obtained from Arrhenius empirical formula is 51.39 kJ/mol. The EDS and XPS analyses suggest that the oxidation of sulfur within pyrite is through a series of intermediate stages, and eventually is oxidized to sulphate accompanied with the formation of element sulfur. This indicates a thiosulfate oxidation pathway......
Recent progress of flexible sulfur cathode based on carbon host for lithium-sulfur batteriesZhuosen Wang1,Xijun Xu1,Shaomin Ji2,Zhengbo Liu1,Dechao Zhang1,Jiadong Shen1,Jun Liu11. Guangdong... density are urgently needed.As we all know,for next generation high energystorage systems,lithium-sulfur(Li-S) batteries with a high theoretical capacity are regarded as one of the most promising......
Nickel embedded porous macrocellular carbon derived from popcorn as sulfur host for high-performance lithium-sulfur batteriesWenjuan Wang1,Yan Zhao1,Yongguang Zhang1,Ning Liu1,Zhumabay Bakenov21...-sulfur(Li-S) batteries with remarkably higher theoretical capacity(1675 m A h g-1) has become one of the extensive research focus directions worldwide. However, poor conductivity of sulfur, critical......
XPS characteristics of sulfur of bio-oxidized arsenic-bearing gold concentrate and changes of surface nature of bio-oxidation residue YANG Hong-ying(杨洪英), GONG En-pu(巩恩普), YANG Li(杨 立), CHEN..., the chemical state change of sulfur is a complex and key factor. It is not only an indicator of the extent and intensity of the bio-oxidation, but also controls the property of bio-leaching medium......
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:A Roasting oxidation-thiosulfate leaching of gold from refractory gold-bearing sulfur concentrates LI Feng1, 2, DING De-xin1, 2, HU Nan1, PENG Zhi-cheng1, 2, CHEN Wei1, 2 (1. Key Discipline Laboratory... and 0.3 mol/L Na2SO3. Key words: refractory gold-bearing sulfur concentrates; gold; thiosulfate; leaching; roasting; oxidation 金作为重要的国际储备资产,同时也是特殊的战略资源,具有极优的稳定性与良好的导电性和导热性,在工业和现代高新技术产业中得到了广泛应用[1-4].我国金矿资源丰富......
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Effects of sulfur addition methods and Ca-Si treatment on the microstructure and properties of 30MnVSGuo-zhong Li1,2), Fu-ming Wang1), Rong Hui2), and Wen-kui Cao2) 1) School of Metallurgical...="ChDivSummary">The effects of sulfur addition methods and Ca-Si treatment on the microstructure and properties of free-cutting non-quenched and tempered steel 30MnVS were investigated by using optical......