高含砷硫酸铜结晶母液提砷新工艺的研究

从介绍铜电解液净液过程中产生的粗硫酸铜结晶精制的方法入手,详细研究了高含砷硫酸铜结晶母液传统提砷的方法、硫化砷饼与结晶母液压煮提砷工艺与二氧化硫直接还原提砷方法,目的是通过对比多种方法的优缺点,找到一种更先进、更科学的提砷技术,并通过生产实践证明其可行性。     

结晶硫酸铜母液在亚砷酸工艺中的应用

本文介绍了在亚砷酸工艺中处理结晶硫酸铜母液的方法。该方法充分利用了液相中的高价砷,以降低亚砷酸工艺过程中铜的消耗。     

采用粗结晶生产新国家标准硫酸铜的工业实验

研究了结晶母液中砷含量对硫酸铜产品砷含量的影响规律,确定了生产新国家标准农用硫酸铜对结晶母液中砷的控制要求。生产实验表明:结晶母液砷含量控制在15g/L以下,硫酸铜产品稳定达到《硫酸铜(农用)》GB437-2009的指标要求,即砷含量小于25mg/kg、铅含量小于40mg/kg、镉含量小于10mg/kg。     

黑铜中铜砷湿法分离试验研究

论述了采用通氧酸浸法分离黑铜中的铜砷,并制取硫酸铜和三氧化二砷的工艺方法,研究了各种工艺参数对铜砷分离的影响,试验结果铜,砷直收率分别为８７．１０％,６８．９８％。     

黑铜中铜砷湿法分离试验研究

论述了采用通氧酸浸法分离黑铜中的铜砷，并制取硫酸铜和三氧化二砷的工艺方法，研究了各种工艺参数对铜砷分离的影响，试验结果铜、砷直收率分别为８７．１０％、６８．９８     

用海绵铜生产硫酸铜

本文提出处理镍电解产出海绵铜的工艺,包括硫酸化焙烧、浸出、真空蒸发、结晶等工序。产品为硫酸铜,母液返回镍系统。该工艺流程已在年产4,000吨硫酸铜车间得到运用。     

贵溪冶炼厂制酸工艺及生产实践

本文介绍了贵溪冶炼厂铜冶炼烟气制酸工艺,并对三期工程投产后2套制酸系统的生产实践进行了 总结。     

国外铜电解液净化除砷、锑、铋的方法

一、前言铜电解液净化的传统方法是抽出部分电解液进行中和、浓缩、结晶,生产硫酸铜(CuSo_4·5H_2O)。结晶后的母液采用不溶阳极电解脱铜,使电解液中铜含量降低到0.5g/1以下。在不溶阳极电解脱铜的后期,砷,锑、铋杂质与铜一道在阴极上呈海绵     

含砷含镍高酸硫酸铜结晶母液的综合利用

针对硫酸铜结晶母液含砷、含镍、高酸的特点,根据正交试验法,采用pH调控法依次进行中和、沉铜、沉镍工业试验,探究了反应时间和终点pH对分离效果的影响。结果表明,采用液碱调控母液pH能有效回收铜、砷、镍元素。中和反应最佳参数为：终点pH=2.5~3.0、反应时间1.5 h、反应自然升温,能够以铜砷渣形式回收98%以上的砷,并与镍成功分离;沉铜反应终点pH=6.0~6.5、反应时间1.0 h、反应温度80~90 ℃,能实现铜沉淀率＞93%;沉镍反应终点pH=10.0~10.5、反应时间2.0 h,在室温下压滤,镍沉淀率＞98%。母液经处理后得到的沉镍后液含铜＜50 mg/L,含砷＜5 mg/L,含镍＜100 mg/L,母液得到有效处理,实现铜回收率＞96%,砷回收率＞98%,镍回收率＞84%。     

贵溪冶炼厂卡尔多炉杂铜冶炼的生产实践

简要介绍了贵溪冶炼厂卡尔多炉的工艺流程,以及处理低品位杂铜冶炼的生产实践,对卡尔多炉杂铜冶炼特点进行了分析,并归纳了该工艺的优缺点。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.