攀枝花选钛尾矿提钪工艺的研究

研究了攀枝花钒钛磁选矿电选尾矿为原料的纯碱融熔－酸浸和石灰焙烧－酸浸，Ｐ２０４－煤油萃取、盐酸洗杂、氢氧化钠反萃提钪的工艺及粗钪的提纯精制技术，取得了钪的分解率为８９．８％和８２．１５％，萃取率约９５％，铁的洗脱率９９．５４％，钪的反萃率９９％的结果，反萃得到的氢氧化钪经提纯精制，可产出纯度为９９．９０％的Ｓｃ２Ｏ３。     

尖山铁矿尾矿浓缩工艺研究及生产实践

针对尖山铁矿尾矿浓缩工艺中存在的问题，通过试验研究，引进高效浓缩设备，改善了浓缩溢流水水质，同时提高了尾矿输送浓度，降低了尾矿输送成本。     

第Ⅱ类尾矿库环保防渗系统设计探讨

尾矿库是堆存矿山工业固体废物的场所,根据国家新环保法和新尾矿设施设计规范,第Ⅱ类尾矿库必须进行环保防渗系统设计,且防渗性能必须满足规范要求。防渗系统是Ⅱ类尾矿库的极其关键的部分,它能有效地将尾矿库内的尾矿及矿浆水与外界隔离,防止尾矿水对环境的污染。重点探讨了环保防渗系统中HDPE膜及膨润土垫的主要技术特点、防渗层的结构设计、锚固平台及锚固沟的主要技术要求。指出了HDPE膜使用时,应该注意膜材中添加再生料问题、高寒地区温差问题、膜的厚度问题;膨润土应选择钠基膨润土,在含高浓度电解质溶液的防水、防渗工程中,不宜采用膨润土防水毯。针对尾矿库所在地场地基础层渗透系数等因素综合确定防渗结构层,并根据国内外防渗工程实际效果推广单层人工复合防渗结构层。     

水对尾矿坝稳定性的作用机理研究

通过对尾矿库实际发生事故的统计资料分析,大约l/3的事故是由于洪水原因造成的,尾矿坝作为尾矿库的主要组成设施,其稳定性更是与水密切相关。坝体稳定性的研究是一个非常复杂的问题,尤其是涉及到地下水位、降雨、物理力学参数等一系列难以准确确定的变量。滑坡、溃坝等事故的发生与水的作用有密切关系,已成为共识,但人们对这种关系的认识和理解仍很不充分。基于水在尾矿库安全运行中的重要作用,阐述了水作用于坝体边坡的两种途径,并以水在滑坡灾害中的作用为例,探讨了水对坝体稳定性的影响及其作用机理。     

我国矿山尾矿资源综合利用现状与思考

论述了我国矿山尾矿资源的特点、尾矿综合利用的途径及现状.分析了尾矿综合利用的意义和必要性,指出了尾矿综合利用是实现我国矿业可持续发展的重要途径,对尾矿综合利用存在的问题提出了相应对策.     

Physicochemical Characterization of Mexican Cowpea (Vigna unguiculata) Tailing Starch

A physicochemical characterization was made of tailing starch isolated from cowpea (Vigna unguiculata), a legume. Proximate composition was 1.6% protein, 3.1% fiber, 0.7%, 0.6% ash and 94.0% carbohydrates as nitrogen‐free extract. Total dietary fiber content was 14.1%, soluble fiber was 12.1%, and insoluble fiber was 2.0% as determined by the Prosky method. Amylose content was 22.9%. Gelatinization temperature ranged from 73.5°C to 86.3°C, the peak temperature being 79.3°C. Gelatinization enthalpy was 12.9 J/g. Swelling power ranged from 6.1 g water per gram starch at 60°C to 26.3 g water per gram starch at 90°C. Solubility, analyzed within the same temperature interval, ranged from 4.3% to 23%. Water absorption capacity was 5.8 g water per gram starch at 60°C and 19.4 g water per gram starch at 90°C. Initial pasting temperature was 78°C, breakdown was ‐68 Brabender Units (BU), consistency was 265 BU, and setback was 197 BU. Clarity, expressed as transmittance, was 13.4%. Syneresis in a 6% gel stored for 24 h at 4°C was 6.6% and 22.5% at −10°C. The physicochemical properties of Mexican cowpea tailing starch indicate that it is a good source of dietary fiber which can be included in food systems that require thermal treatments as bakery products.     

广西天等锰矿尾矿坝填料特性试验研究

利用采区剥离土填筑尾矿坝,控制土石方填筑质量是工程的关键,而高质量填筑体的修筑成型,首先取决于对填料工程性质的充分掌握和合理利用。充分了解填料的工程性质,有利于正确、合理地指导设计和施工。通过室内试验研究,分析尾矿坝填料的特殊物理力学性质和工程性质,评价其用作填料的适宜性,并给出设计、施工所需关键参数,为设计和施工提供指导和帮助。     

Inactivation of Bacillus spores in batch vs continuous heating systems at sterilisation temperatures

This study was performed to assess the heat resistance of spores of Bacillus species in batch and continuous heating systems under commercial sterilisation conditions. Spores of thermophilic Bacillus smithii and mesophilic Bacillus amyloliquefaciens were found to be highly heat resistant in the batch system. They were able to withstand typical sterilisation temperatures. B. amyloliquefaciens showed tailing in the batch system and, before the onset of the tailing, a higher inactivation rate than in the continuous system at low temperatures. The reason for the tailing might be the presence of spore aggregates which are disrupted in the continuous system.     

基于物联网的尾矿库安全监测系统在伊春鹿鸣的应用

尾矿库安全的在线监测是防止重大事故发生有效保障人民的生命财产安全和生态安全重要途径。本文详细介绍了鹿鸣尾矿库监测数据回传的多种通讯方式,以及选择各种回传方式的依据,进一步说明了系统在智慧矿山建设中的重要性。     

某尾矿中稀土的赋存状态及其综合回收研究

详细研究了某选矿厂尾矿的化学成分、矿物组合、以及稀土元素的赋存形式、稀土矿物的分布特征和解离性等,阐明了该原料中稀土的赋存状态。据此提出了重—浮联合流程综合回收稀土的方案,并通过小型选矿试验进行了验证。研究结果为其综合利用提供了基础资料和理论依据。