A new effective combination of a thin‐film extractor and gravity setter

Previous and present studies demonstrate that the new thin‐film extractor with the gravity settler have superior performance over other conventional devices. This is because the volume of the extractor and the settler are significantly reduced, on the average, by factors of 100 and 10, respectively, for a similar power input. Correlations for a water‐iodine‐kerosene liquid system developed in the past (Berman and Tamir, 2000) for the mass transfer and pressure drop were modified by incorporating the ratio R/R_r This ratio takes into account the impact of the liquids on the walls of the reactor where R is the radius of the free film and R_r is the radius of the reactor. In addition, an equation was proposed, which demonstrates the dependence of the extraction efficiency on the operating parameters. The gravity settler combined with the thin‐film extractor was tested thoroughly yielding two correlations for estimating its height, i.e. the fluidized‐bed and dense‐packed zones. In the present case the sedimentation zone is absent. A scale up procedure based on the model developed is proposed as well as a principle scheme of a pilot plant based on the new effective combination     

Israel: metropolitan integration or ‘fractured regions’? An alternative perspective

This paper proposes an alternative account of the high degree of power centrality in Israel, by arguing that the territorial ‘fracturing’ of Israel's main social and ethnic groups has prevented the emergence of effective pressure for regional devolution. Israel's character as a settler and settling state, and its central project of Judaising contested territories, enabled the Israeli ‘ethnocracy’ and its (mainly Ashkenazi) elites to create a political geography of ‘fractured ethnic and social regions’. This was achieved by dispersing minorities and legitimising segregation and inequality, all in the name of the ‘national interest’.The Israeli political landscape is therefore organised as ‘fractured regions’, each representing a distinct and interconnected, yet geographically dispersed, set of localities. The logic of dispersal and segregation, in turn, has also influenced patterns of development and residential separation within Israel's main urban areas. Thus ethnic and social fragmentation and conflict, and not a putative process of national or metropolitan integration, can explain much of Israel's highly centralised power structure.     

江铜贵溪冶炼厂一系统闪速炉热修技术探讨

江西铜业集团公司贵溪冶炼厂(简称贵冶)一系统闪速炉,通过对生产过程中炉体耐材易损部位的日常检修维护,在检修过程中积累经验后,将其进行技术总结。并结合炉体结构特点及生产过程中的常见问题进行分析,制定解决措施,形成一套技术方案。     

斜板沉降槽对活性白土的提纯研究

为了提高活性白土的质量,本文提出了采用斜板沉降槽提纯活性白土的方法.实验首先探讨了斜板沉降槽的停留时间分布情况,以确定自制斜板沉降槽结构的合理性,然后考察了斜板沉降槽提纯工艺中活性白土悬浮液固体质量分数和给料流量对提纯活性白土产品的效果影响.结果表明,给料流量增加,停留时间分布越均匀;原料在活性白土悬浮液给矿质量分数为10％和给料流量为2.0 t/hm2提纯后,产品的含沙率为4％,脱色率为76％,平均粒径为27 μm,回收率为77.5％,因此,提纯后活性白土的质量得到改善.     

大流比全逆流混合澄清槽结构参数的试验研究

本文以大流比全逆流混合澄清槽水力学试验结果为基础,结合假设推理,研究了混合室内两相接触相比及澄清室两相界面与相口高度、相口宽度、重相堰高度等各结构参数的相关性,分析推演了其相关性的影响机理,为全逆流混合澄清槽的工程设计和调试提供了有力依据。     

双混合室萃取箱研究──Ⅱ：澄清室流型与结构

本文用染色示踪法结合连续相停留时间分布特征．分析了澄清室内连续相流动型态及其影响因素，并考察了连续相流动型态对分散相被夹带值的作用。在此基础上，提出了三种澄清室的改进结构。实验表明，改进结构能大大地减小两相的液存量和相互夹带值，提高分相速率。     

深锥高效沉降槽在铝土矿浮选尾矿脱水工艺中的研究及应用

针对铝土矿浮选尾矿浓密机存在底流浓度低、溢流浮游物偏高问题，自行开发研制了深锥高效沉降槽，以代替普通浓密机，文章介绍了深锥沉降槽的工作原理和结构特点，工业应用及实际效果表明，深锥沉降槽较好地满足了工艺要求，保证了尾矿坝的安全堆存，提高了回水利用率，减少了操作和维护工作量。     

鼓风炉熔炼高铅氧化渣的生产实践

叙述了鼓风炉熔炼高铅渣的生产实践,介绍了延长鼓风炉和电热前床使用寿命,提高鼓风熔炼能力和降低渣含铅所采取的措施和取得的效果。     

南昌大学前湖校区中水回用工程设计

介绍了南昌大学前湖校区中水回用处理工艺的特点、主要构筑物设计参数及主要的技术经济指标。该中水处理站采用了一种新的组合工艺——压载颗粒絮凝斜管沉淀-BAF工艺，该工艺以硅藻土为压载剂，使污水中的颗粒物质与硅藻土形成密实微絮体并在斜管沉淀池中得到高速澄清，经预处理后的污水进入BAF进行生化处理，出水水质满足《生活杂用水水质标准》（CJ／T48—1999）。     

一种水分散型多隔层混合室混合澄清萃取器的设计及操作性能

从减小液滴内传质阻力、提高两相间传质速率和改善混合室中两相的停留时间分布等方面对油分散型单混合室混合澄清萃取器(OWSMMS)的设计进行了改进,设计了水分散型多隔层混合室混合澄清萃取器(WOMMMS)以提高混合澄清萃取器的分离效率.在实验中分别应用OWSMMS和WOMMMS进行稀土分离,比较了它们的操作性能.在实验条件下,通量为1.46～2.92m~3/(m~2·h)时,轻/重稀土的相对分离效率比β_(qz)为1.426,相邻元素的相对分离效率比β_(ab)一般都大于1,说明WOMMMS的操作性能明显优于OWSMMS.