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Effect of diboron trioxide on the crushing strength and smelting mechanism of high-chromium vanadium–titanium magnetite pelletsGong-jin Cheng1,Zi-xian Gao1,He Yang1,2,Xiang-xin Xue1,21. School of Metallurgy, Northeastern University2. Liaoning Key Laboratory of Recycling Science for Metallurgical Resources摘 要:The effect of diboron trioxide(B2O3......
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熔融制样-X射线荧光光谱法测定三氧化钼中7种组分王宝玲1,李小莉2,田文辉1(1.陕西省渭南市华县金堆城质量计量监测中心2.天津地质矿产研究所,天津 300170)摘 要:采用无水四硼酸锂熔融制样,建立了用波长色散X射线荧光光谱(XRF)法测定三氧化钼中MoO3,Pb,Cu,SiO2,CaO,Fe2O3,K2O 7种组分的方法.以Mo为主要分析元素分别对仪器参数,分析谱线,曲线拟合进行了研究,并详细讨论了熔融法制样条件中熔剂的选择,脱模剂的选择,熔融温度和熔融时间的确定.采用经过多次化学分析的样品作为标准样品绘......
Low-temperature Synthesis of Large-area Films of Molybdenum Trioxide Microbelts in Air and the Dependence of Their Field Emission Performance on Growth ConditionsDongmei Ban,Ningsheng Xu,Shaozhi Deng... University,Guangzhou 510275,China摘 要:A simple method is introduced for the preparation of large-area films of molybdenum trioxide (MoO3) microbelts......
, the sodium arsenate solution could be further reduced by sulfur dioxide (SO2) gas to arsenite, at a reduction yield of 92% under the suitable conditions. Arsenic trioxide with regular octahedron shape could..., and arsenic trioxide preparation, provides an attractive approach to realize the resource utilization of arsenic-containing cobalt and nickel slag. Key words: arsenic-containing cobalt and nickel......
砷酸铜;沉淀;二氧化硫;还原;三氧化二砷 中图分类号:X703 文献标识码:A 文章编号:1672-7207(2009)01-0048-07 Arsenic trioxide made...: Preparation arsenic trioxide from As-containing wastewater by precipitation-reduction method was studied. Sodium hydroxide was added in the As-containing wastewater to adjust pH value to 6......
; 文章编号:1672-7207(2008)06-1157-07 Preparation of arsenic trioxide from arsenic sulfide slag ZHENG Ya-jie, LIU Wan-yu, BAI Meng, ZHANG Chuan-fu (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: Arsenic trioxide was prepared by leaching arsenic sulfide slag in NaOH solution, oxidating with air and reducing with sulfur dioxide......
, and then is evaporation crystallized. Key words: copper electrolyte; sulfur dioxide; purification; copper sulfate; arsenic trioxide 1 Introduction Removal of As, Sb and Bi impurities from copper electrolytes... of trivalent arsenic decreases to a rock bottom gradually when H2SO4 concentration increases from 0 to 850 g/L [12], and trivalent arsenic will deposit in the form of arsenic trioxide. Antimony......
rises to 1043 K, MoC will be transformed to Mo2C. Key words: molybdenum carbide; gas-based reduction; carbon monoxide; molybdenum trioxide Received date: 2019-04-02; Accepted date: 2019-09-16......
concentration decreases after a certain time at temperature above 100 °C. Furthermore, the undissolved tungsten exists in the form of either APT·4H2O below 90 °C or pyrochlore-type tungsten trioxide above 100 °C... provide a new idea to exploit a novel technique for manufacturing ammonium paratungstate and pyrochlore-type tungsten trioxide. Key words: ammonium paratungstate; dissolving behavior; ammonium carbonate......