微生物浸滤法脱除煤中的黄铁矿

本文首先叙述了煤中黄铁矿的分布赋存规律。在此基础上，指出了微生物浸滤法脱除黄铁矿硫的产生背景及工艺过程，重点分析了常用的微生物的特征及其作用机理。最后，评述了微生物浸滤法脱除煤中黄铁矿硫的现状及发展动向。

离子色谱法在可剥落涂料检测中的应用

对可剥落涂料干膜采用浸滤法处理,采用ICS1500型离子色谱仪对涂料中的氟、氯离子含量进行测定。采用的是AS14A阴离子分析柱和AG14A阴离子保护柱,采用16mL8MmolNa2CO3和2mL8MmolNaHCO3组成的流动相进行分离,以电导检测器检测氟、氯离子的含量。结果表明样品中氟、氯离子的标准曲线分别为y=0.3041x+0.0.3931和y=0.3198x-0.0291,相关系数分别为0.9996和0.9999,最低检出限分别为0.05ppm和0.005ppm。该方法具有精密度高,回收率好,样品处理简单等优点,适合可剥落漆中氟、氯离子的测定。

载体对Al_2O_3微滤膜的影响

采用浸浆法在α氧化铝载体上制备氧化铝微滤膜,研究了载体的润湿性能、表面的粗糙度、孔的大小及载体与膜的匹配等情况对微滤膜完整性的影响。结果表明,当载体表面光滑、润湿性能良好和载体的孔径大小与悬浮粒子大小和性能之间相匹配时,才能制得表面连续、完整的氧化铝微滤膜。

Techniques of copper recovery from Mexican copper oxide ore

Mexican copper ore is a mixed ore containing mainly copper oxide and some copper sulfide that responds well to flotation. The joint techniques of flotation and leaching were studied. The results indicate that an ore containing 19.01% copper could be obtained at a recovery ratio of 35.02% by using sodium sulfide and butyl xanthate flotation. Over 83.33% of the copper oxide can be recovered from the railings by leaching in suitable conditions, such as 1 h stirring at a temperature around 25 ℃with a mixing speed of S00 r/min, an H2SO4 concentration of 1.0 mol/L and a mass ratio of the ore-slurry-liquid to solid （mL/ms） of 3. The overall yield of refined ore after flotation and leaching is over 89.18% of the copper, which is much better than sole flotation or leaching. A copper product containing more than 99.9% copper was obtained by using the process： flotation-agitation leaching- solvent extraction-electro-winning.

乌杞蝎精酒工艺学研究

厂选用不同的溶媒和提取方法，分别以大黄素含量，出膏率及澄明度为考察指标，采用正交试验法，选定部分药材以５５°白酒渗滤。