共搜索到35519条信息，每页显示10条信息，共3552页。用时：0小时0分0秒550毫秒
J. Cent. South Univ. (2012) 19: 1711-1717 DOI: 10.1007/s11771-012-1197-9 Adsorption mechanism of mixed salicylhydroxamic acid and tributyl phosphate collectors in fine cassiterite electro-flotation... ? Central South University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: Two reagents including salicylhydroxamic acid (SHA) and tributyl phosphate (TBP) were tested as collectors either......
Y. Enrichment of Pb(II) ions using phthalic acid functionalized XAD-16 resin as a sorbent [J]. Journal of Colloid and Interface Science, 2005, 291(1): 84-91. [24] YURTSEVER M, AYHAN SENGIL I...J. Cent. South Univ. Technol. (2009) 16: 0569-0574 DOI: 10.1007/s11771-009-0095-2 Adsorption of Pb2+ on macroporous weak acid adsorbent resin from aqueous solutions: Batch and column studies......
CAS-OB钢水同时降低[Al]s,[O]和T.O的实验研究于赋志,沈峰满,刘恒昌,陈永范,倪庆仁,刘海啸摘 要:为防止常规ＣＡＳ－ＯＢ铝热法精炼钢水时［Ａｌ］ｓ和Ｔ［Ａｌ］过高而导致连铸时中间包水口 堵塞,对用Ａｌ－ＣａＯ处理钢水进行了实验结果表明:用Ａｌ－ＣａＯ脱氧能够同时降低钢中溶解氧, 总氧(１０×１０－６~３０×１０－６)和酸溶铝量(７×１０－６~１２×１０－６),并能控制钢中夹杂物的形态,数量和分布．关键词:CAS-OB;水口堵塞;脱氧;钢水;夹杂物;......
积. 关键词:炭纤维； 硝酸氧化；热解炭；CVD 中图分类号:TP332 文献标志码:A 文章编号:1672-7207(2012)02-0460-06 Effect of nitric acid... min后,纤维表面的氮含量最高.再结合图1所示的纤维表面形貌,发现硝酸处理40 min后纤维表面氧化刻蚀最明显且均匀. 分别用33%和22%的硝酸对炭纤维进行40 min氧化处理,处理后纤维表面形貌见图2. 图1 66%硝酸处理不同时间后炭纤维的表面形貌 Fig.1 SEM images of carbon fibers treated by 66% nitric acid......
mud settlement by different polymers 从表3和图3可以看出:改性聚合物FeCl3显色等级较高,表明其中含有氧肟酸官能团；改性聚合物有良好的赤泥沉降性能,且随着羟肟化程度升高,沉降性能提高. 改性产物的红外光谱分析结果如图4所示. 红外光谱图中,1 670 cm-1处的峰为酰胺基中C=O的特征吸收峰,1 568 cm-1处-COO-的特征吸收峰较强,说明合成产物...段反应时间为2 h. 图4 自制氧肟酸型聚合物红外光谱图 Fig. 4 FT-IR spectrum of self-made hydroxamic acid polymer 2.2 盐酸羟胺用量 羟胺与酰胺基的物质的量比为0.5~1.5,考察盐酸羟胺用量对改性的影响.改性聚合物对进口铝土矿增浓溶出赤泥的分离沉降结果如图5所示. 图5 羟胺用量对......
J. Cent. South Univ. Technol. (2009) 16: 0223-0229 DOI: 10.1007/s11771-009-0038-y Acidophilic bacterial community reflecting pollution level of sulphide mine impacted by acid mine drainage WAN... analysis, it is found that mining pollution greatly impacts the bacterial ecology and makes the habitat type of polluted environments close to acid mine drainage (AMD) ecology. The polluted......
纯铁液中Y-O,Y-S平衡项长祥,杨斯馥,韩其勇摘 要:本工作应用放射性同位素90Y,通过将试样在低温有机电解液中电解的方法分离稀土夹杂物,测定了铁液中溶解态的稀土含量.用ZrO2(MgO)固体电解质组成的定氧测头测定了铁液中氧的活度.用硫化氢气体发生法测定并计算了铁液中溶解态的硫含量.由此得出1560~1660℃范围内Y-O平衡常数与温度的关系式以及1600℃下Y-S平衡常数值,并测定了Y对O,Y对S的活度相互作用系数eOY,eSY及其它有关热力学数据.关键词:铁液;钇;氧;硫;平衡常数;活度系数;自由能;......
J. Cent. South Univ. Technol. (2007)06-0793-05 DOI: 10.1007/s11771-007-0151-8 Synthesis, oxygenation and catalytic performance of manganese complex with p-aminomethyl benzoic acid...) (2. School of Pharmeutical, Central South University, Changsha 410013, China) Abstract:The amino acid Schiff base complex (Sal-AMBA-Mn) was prepared with p-amino-methylbenzoic acid, salicylaldehyde......
[8]. Interstitial elements, such as carbon (C), oxygen (O), nitrogen (N) and hydrogen (H), usually have a strong bonding with Ti atoms and occupy octahedral interstice due to small atomic size... for Ti, O has gained increasing attention on its strengthening effect, because O has the highest solubility in Ti. The α-Ti can maintain a concentration of 34 at.% of O in the matrix without......
闪锌矿氧压酸浸过程中银的催化作用 王吉坤1,梁铎强2,汪云华3 (1.云南冶金集团总公司技术中心,云南 昆明,650031;2.昆明理工大学,云南,昆明,650093;3.昆明贵金属研究所,云南,昆明,650106) 摘要:进行了银对闪锌矿氧压酸浸催化作用的研究.通过间歇性小型试验考察了各种因素对浸出率的影响,诸如浸出温度,浸出时间.试验在2升的高压釜内进行,结果表明银离子对闪锌矿氧压酸浸有显著的催化作用. 关键词:冶金技术; 银; 氧压酸浸; 闪锌矿; metallurgical technology; silver; acid pressure oxidative leaching; sphalerite; [全文内容正在添加中] ......
