酸性重金属废水的联合处理试验研究

采用硫化沉淀法将酸性重金属废水中的铜进行沉淀回收,处理后废水用氧化钙中和后产生的中和渣和中和液进入选矿系统。试验结果表明:采用硫化沉淀法可以回收高品位的铜,回收率较高;与自来水进行选矿试验相比,中和处理产生的中和渣和中和液进入选矿流程同样可获得良好的选矿指标,二者基本相同。该工艺可利用现有的选矿设备实现酸性重金属废水的资源化治理。     

瑶岗仙裕新多金属白钨矿选矿厂设计实践

从原矿工艺矿物学研究、选矿试验、工艺流程设计、选矿回水利用及尾矿处理等方面,介绍了湖南瑶岗仙裕新多金属矿建设的各个环节.论述了采、选矿废水回用、尾矿处理设计方案的可行性与合理性,实现了采、选矿厂废水的零排放.     

铜铅锌选矿废水处理及回用技术研究

研究了铜铅锌选矿废水的处理方法,并对处理后的废水进行了选矿回用试验,为铜铅锌矿最终实现选矿废水零排放提供参考。研究结果表明:选矿废水经"碱式铝絮凝沉淀过滤-二氧化氯氧化-调节"处理后,可回用于选矿系统,对选矿指标基本无影响。     

井下含硫铁矿床预防自燃与自燃后治理

研究主要针对湖南宝山有色金属矿业有限责任公司井下采场,此矿山现今主要进行地下开采,矿山主要有铅锌矿、铜钼矿。在井下铅锌矿采场中,部分采场内岩石含有大量硫铁矿,特别是矿山北部区域,含硫铁矿较高采场在矿体回采后存放太久的情况下容易发生自燃,严重影响到井下安全生产,所以对含硫铁矿采场自燃的预防与自燃后的治理及其重要。该矿山针对井下含较高硫铁矿床预防采场自燃与自燃后治理进行了研究,做到降低采场自燃可能性,自燃后提高治理效率,尽量减少此类采场对安全与生产的影响。     

选铜矿山选矿废水COD降解试验

针对选铜矿山工业废水COD含量高的特点,试验在选矿废水中添加化学试剂,达到去除COD的目的,最终使废水能够达标排放。试验结果表明在酸性条件下,废水中添加次氯酸钠溶液,可以有效去除COD,该方法操作简单,费用低。     

某钨矿选矿废水处理及回用试验研究

某钨矿选矿过程中加入了大量硅酸钠和其他浮选药剂,造成了尾矿沉降缓慢,选矿废水黏度大,废水中TAs、COD_(Cr)等指标超标无法外排等问题,而且将此尾矿澄清水回用到选矿中,浮选指标严重恶化。针对此问题,本文对该钨矿选矿废水进行了脱稳除硅试验和除砷降COD_(Cr)试验,试验结果表明,"石灰沉淀-铁碳微电解-吸附材料吸附"工艺处理该钨矿选矿废水效果明显,处理后的废水后液中TAs与COD_(Cr)指标均可达到国家地表水Ⅱ类水质标准,将其返回选矿流程,选矿指标接近清水指标。     

江铜废水循环利用

江西铜业集团公司德兴铜矿为破解采矿选矿需要大量取水和铜矿被选出后产生的酸性废水又难以处理的难题，将矿山工业废水一分为三：1／3的废水用于废石场喷淋浸出铜，1／3的废水排入尾矿库与库中碱性水中和后返回选矿，1／3的废水进入处理站处理达标后排放。目前，整个江铜集团工业用水复水率达85％，每年节约水资源3亿t，节约取水资金2000万元。     

大型矿业节水治污技术项目

该技术项目以大型有色矿山德兴铜矿为示范企业，系统研究了大型矿业节水优化管理技术、复杂矿山酸性废水处理技术和废水回用技术，并结合德兴铜矿产生酸性废水的实际，建立起与节水减污优化集成技术相配套的8项工程。包括露天开采区截排水系统调控与管理工程；北山290酸性水输送工程；杨桃坞酸性水综合利用工程；水龙山废石场清污分流工程；杨桃坞、祝家酸性水库清污分流工程；采场南山110平台清污分流工程；     

对选矿废水综合利用的探讨

通过对金堆城钼业公司选矿废水再用于选矿作业的选矿试验，证明选矿废水循环利用是可行的，既提高了选矿浓度，又减少了对环境的污染，经济和社会效益显著。     

大型铜矿山二次资源的开发利用

本文叙述了大型铜矿山在生产中产生的废石、低品位矿石、酸性废水及地表难选氧化矿石、表外矿石中回收铜，在选矿排出的尾矿中，再次回收有用金属的试验研究与生产实践的效果。     

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。     

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.     

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.     

Concept of freedom of infection of animal flocks

Totally negative results of epidemiological investigation of random samples do not prove the absence of the infection as the pathogen may be restricted to only a few animals in the herd for a long time. The statement "absence of infection" is critical for such situations. The question is raised, whether the statement "absence of infection" should be generally avoided. Classification of herds and flocks according to the prevalence of the pathogen would be more valid for the implementation of control measures.     

显微维氏硬度测量不确定度评定

对显微维氏硬度测量不确定度进行评定，建立了不确定度计算的数学模型，确定了影响实验结果的各项因素，计算出了各因素的标准不确定度，得出结果的扩展不确定度，并给出最终测量结果的表达式。     

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)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.