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reduction mechanism of selenious acid solution[J]. Journal of Henan University (Natural Science), 1999, 29(1): 33-38. Hydrogen peroxide catalytic reduction of selenate by sulfur dioxide and formation..., the hydrogen peroxide catalytic reduction of selenate by sulfur dioxide was reported for the first time, by which the reduction rates of selenate reached 99.8%, proving a new way to recycle Se6+. A series......
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Sulfur distribution in preparation of high titanium ferroalloy by thermite method with different CaO additionsChu Cheng,Zhi-He Dou,Ting-An Zhang,Jian-Ming Su,Hui-Jie Zhang,Yan Liu,Li-Ping Niu摘 要:Ferrotitanium is used as a deoxidizer and alloying agent during steelmaking process,which has a high demand for sulfur control.Sulfur was introduced from raw......
J. Cent. South Univ. Technol. (2011) 18: 1924-1929 DOI: 10.1007/s11771-011-0924-y Influence of sulfur content in raw materials on oxidized pellets CHUN Tie-jun(春铁军), ZHU De-qing(朱德庆), PAN Jian(潘建... of sulfur content in raw materials on oxidized pellets was studied. The results show that most sulfur exists in the form of elementary sulfur in pyrite cinder, and over 95% sulfur is removed in producing......
, and long time stay in dense phase bed area of high temperature and low oxygen, so the rate and degree of sulfur capture are lower. Small particles are reactive but they have a lower proportion... increases and CaO and P2O5 contact more fully. Key words: calcium oxide; phosphoric anhydride sorption; sulfur dioxide sorption; particle scale 中国是产磷大国,产能占世界总产能的80%.2010年黄磷产量达到了89.9万t,同时,向大气排放约24亿m3的......
this technical process is characterized by high manganese reduction efficiency and cyclic utilization of sulfur resource in tail-gas, providing some references and judgments for the high utilization of low-grade pyrolusite in industrial scale. Key words: pyrolusite; rotary kiln; reductive roasting; sulfur dioxide; resource utilization; kinetics 锰是一种重要的战略物资,被广泛地应用于炼钢,有色冶金,化工等领域.我国锰矿资源丰富,但大多数为中低品位软锰矿,富锰矿较少.随着富锰矿......
Corporation Limited, Jinchang 737100, China) Abstract: Arsenic(Ⅴ) and antimony(Ⅴ) in copper electrolyte were reduced to arsenic(Ⅲ) and antimony(Ⅲ) with the aid of sulfur dioxide, and n(As(Ⅴ))/n(As(T...%, 0.37% and 0.2% respectively. Key words: copper electrolyte; reducing by sulfur dioxide; arsenic trioxide; purification; evaporation 铜电解精炼过程中,阳极铜中的As,Sb和Bi杂质,以一定分配比进入铜电解液并逐渐积累.它们不仅会在阴极上沉积,而且会形成漂浮阳极泥,影响阴......
Synthesis and optical properties of Cu2SnZnS4 films under different sulfur atmospheresXian-Cong He1,Hong-Lie Shen2,Jin-Hong Pi1,Chuan-Xiang Zhang1,Yu Hao1,Xiao-Bo Shi11. Department of Materials..., such as CuS, ZnS, Cu2SnS3, and Cu2ZnSnS4 (CZTS) at low annealing temperature in pure sulfur and H2S atmospheres.Finally, CZTS films can be completely formed by sulfidizing at 550℃for 1 h in pure......