从青海德尔尼铁帽矿和高硫半氧化矿中综合回收铜金铁

青海德尔尼铁帽矿和高硫半氧化矿较难分选,研究了采用焙烧—酸浸—氰化浸出工艺从中回收铜、金、铁。结果表明:在m(氧化矿)∶m(高硫半氧化矿)=1∶1、矿石粒度-75μm占81.5%、焙烧温度580℃、焙烧时间2h条件下对混合矿石进行焙烧,然后在液固体积质量比2∶1、体系初始酸质量浓度45g/L、浸出时间1h条件下从焙砂中浸出铜,铜浸出率达88.26%;对酸浸渣,用初始质量浓度2g/L的氰化钠溶液滚瓶浸出24h,金浸出率达85.43%,同时获得铁精矿。该研究为类似复杂氧化矿和半氧化矿的开发利用提供了新思路。     

非晶质硫化物型钼矿石高温焙烧预处理试验研究

针对某矿石非晶质硫化钼矿物中的钼难于浸出的问题,研究了氧化焙烧预处理后再酸浸工艺,考察了焙烧温度、矿石粒度、焙烧时间对钼浸出率的影响。试验结果表明:矿石焙烧后再硫酸浸出,硫化矿物被有效氧化,钼得到高效浸出;在矿石粒度-3mm、焙烧温度500℃、焙烧时间2h条件下对矿石进行焙烧,所得焙砂用硫酸浸出,钼浸出率可达83%,浸出效果较好。     

高硫高砷金精矿细菌氧化-氰化浸金试验研究

采用细菌氧化-氰化浸金工艺处理高砷高硫金精矿，研究了不同矿石细度、矿浆浓度、细菌接种量、氧化温度、氧化时间和矿石硫、铁、砷的脱除率对金浸出率的影响。结果表明，在矿浆浓度为10％，氧化温度为32℃，氧化时间10d条件下，金浸出率可达85．1％；矿石中铁、硫、砷的脱除率分别为70．5％，58．7％和41．1％时，金的浸出率高达87．7％。该工艺与常规直接全泥氰化浸出相比，金的浸出率明显提高。     

含砷硫高碳卡淋型金矿石焙烧-氰化浸金工艺试验研究

介绍了含砷硫高碳卡淋型金矿石的成分、工艺矿物学特征。采用焙烧 氰化浸出工艺提取金,考察了焙烧温度、时间、固化剂加入量、矿石粒度及氰化浸出时NaCN用量对金浸出率的影响,探讨了焙砂中硫化物物相改变及金难于浸出的原因。结果表明,矿石焙烧后,硫化矿物物相及工艺性质发生了显著变化,由还原态转变成了氧化态,金的氰化浸出率达89 9%。焙烧渣中的金主要残存于碳酸盐和硅酸盐中,很难再被浸出。     

从某低品位石煤钒矿中浸出钒的工艺研究

研究了从某低品位石煤钒矿中浸出钒,主要考察了硫酸直接浸出、氧化焙烧—酸浸、氧化焙烧—碱浸和钙化焙烧—碳酸钠浸出等工艺对钒浸出率的影响。结果表明:造球氧化焙烧—酸浸流程工艺指标较好;在焙烧温度850℃、焙烧时间2h、酸用量为矿石质量60%条件下浸出6h,五氧化二钒浸出率达62.5%。     

硫酸-双氧水体系氧化浸出铅冰铜的试验研究

采用硫酸-双氧水体系氧化浸出铅冰铜,在分析试验原理的基础上,以锌铜铁浸出率为考察指标,重点探讨反应温度、双氧水浓度、反应时间、硫酸浓度对锌铜铁浸出率的影响。试验结果表明:在温度20℃、双氧水浓度40 g/L、反应时间120 min和硫酸浓度120 g/L条件下,锌浸出率为99.35%,铜浸出率为99.16%,铅、硫在浸出渣中富集含量分别提高8.5%和7.11%。有效实现铅冰铜中锌、铜与铅、硫的分离及铅、硫等在浸出渣中的富集。     

某碳质金精矿石硫合剂法浸出试验研究

采用石硫合剂对某碳质金精矿进行了浸出金试验,考察了焙烧时间、焙烧温度、浸出时间及浸出温度等因素对金浸出率的影响。试验研究结果表明,焙烧时间和焙烧温度是影响金浸出率的关键因素。当焙烧时间3 h,焙烧温度600℃时,金精矿中的金可被石硫合剂溶液有效浸出;当浸出时间为5 h,浸出温度为50℃时,浸出率明显升高。在最佳浸出条件下,金浸出率最高可达到96%。     

低品位多金属矿石焙砂浸出铜锌工艺研究

研究了采用一次浸出—焙烧—二次浸出工艺从低品位多金属矿石焙砂中浸出铜和锌。结果表明:一次浸出的最佳条件为浸出温度60℃、初始硫酸质量浓度60g/L、浸出时间2.0h、液固体积质量比2.5∶1,最佳条件下,铜浸出率为92.65%,锌浸出率为88.74%,铁浸出率为20.83%,浸出渣率为42.73%,渣中铜和锌主要以硫化铜和硫化锌形式存在;一次浸出渣在900℃下焙烧60min,然后再进行二次浸出,铜、锌浸出率提高到98%左右,而铁浸出率保持在22%~23%。     

硫精矿中铁、铜、钴综合回收试验研究

为了实现低品位铜、钴硫精矿中铁、铜、钴的综合回收,采用氧化—还原焙烧—浸出—磁选工艺,分别探究了硫酸浓度、浸出时间等工艺参数对焙烧渣中铜、钴浸出率的影响。结果表明:硫精矿经氧化—还原焙烧处理后铜的浸出率更高,钴的浸出率有所下降。在硫酸体积浓度为5%、浸出温度为55℃、浸出时间为7.5 h、液固比为5.0的条件下,氧化—还原焙烧渣中铜、钴的浸出率分别可达83.34%、28.38%,对浸出渣进行磁选回收铁,可得品位为64.52%,综合回收率为86.41%的铁精矿。     

烟化炉烟灰硫酸化焙烧-低酸浸出试验研究

试验研究了硫酸化焙烧-低酸浸出工艺从烟化炉中浸出锌，考察了焙烧条件(酸料质量比、焙烧温度、焙烧时间)以及浸出条件(温度，时间)对锌浸出率的影响。结果表明，在焙烧温度600℃,焙烧时间1 h, 98%浓硫酸与烟化炉烟灰质量配比为60%的最佳焙烧条件，浸出时间15 min,浸出温度20℃,锌浸出率可达93.20%。     

材料科学技术转型发展与钢铁创新基础设施的建设

摘要：在第4次工业革命浪潮的推动下,钢铁科学与技术正在经历数字化、智能化转型。钢铁行业全流程各工序均为“黑箱”,为多场、多相、多变的巨系统,具有复杂相关关系和遗传效应等。这些不确定性带来了巨大的挑战。挑战和机遇并存。这些不确定性提供了智能化和数字化技术的应用场景资源;钢铁行业极为丰富的大数据提供了挖掘其中蕴含客观规律的数据资源;现代的数据科学、智能技术为解决不确定性问题提供了强大的手段。以数据为中心,以工业互联网为载体,以实验工具、数字数据、计算工具为支撑,建设钢铁企业材料创新基础设施,将可以大幅度提高研发效率,降低研发成本,有力地支撑钢铁材料科学与技术的转型发展。实验工具平台除了传统的实验室仪器装备和中试装备之外,实际生产线被作为主要的实验工具。这些实验工具提供丰富、精准、写实的历史数据和现实生产数据,特别是生产线装备提供实际生产大数据,蕴含着生产过程中的全部规律,是极宝贵的数据资源。利用机器学习、深度学习等现代数据挖掘技术为计算工具,对这些数据资源进行处理、分析、计算,将数据转换为高保真度模型,可以得到具有“原位分析能力”的数字孪生。在工业互联网的总体架构下,以数字孪生为核心,组成信息物理系统,构建起基于数据自动流动的状态感知、实时分析、科学决策、精准执行的闭环赋能体系,解决生产制造、应用服务过程中的复杂性和不确定性问题,提高资源配置效率,实现资源优化,对材料行业转型发展提供关键技术支撑。虚实映射、实时交互、精准控制的信息物理系统与材料创新基础设施合二为一,以材料创新基础设施为基盘,形成具有“原位分析能力”的数字孪生,建设钢铁生产全流程、一体化的信息物理系统,必将推进钢铁行业智能制造蓬勃开展和数字化、智能化转型。     

Praise and Blame and Robinson.

Daniel Robinson suggests that much of the civil and criminal law "serves as the institutionalized form of praise and blame". Indeed it does. Pulling at this thread of Robinson's tapestry leads the reader straightaway to a host of truths about how law and morality not only intersect, but work together in harmony. "[L]aw", Robinson says, is a "vivid expression of deeper and impenetrably complex moral theories". This essay explores several of these harmonies, but focuses on two. One is that political society must be seen as the cooperation of free persons according to law, which persons hold common moral understandings. The second has to do with retribution as the moral justifying aim of punishing criminals. The author goes beyond Robinson's limited praise of retribution, and shows that some central features of our practice of punishment are understandable only within the retributive framework. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

深云立交桥梁检测及加固改造

根据深云立交桥梁的检测结果，对该桥目前的整体状况、工作状态，及其使用情况做出综合评价，对桥的病害原因进行了分析，并提出合理的加固方案。     

Aging and negative affect: The rise and fall and rise of anxiety and depression symptoms.

The relationship between aging and negative affect is dynamic and complex. Although prior studies have often cited lower prevalence rates of anxiety and mood disorders among older individuals, these studies may miss the dynamic relationship between symptoms and aging. To evaluate a nonlinear model of the relationship between aging and negative affect, the author examined measures of neuroticism, anxiety, and depression symptoms in a cross-sectional, community sample (N = 335), ages 18 to 93. Results indicated a curvilinear relationship, with mean symptom levels increasing during early adulthood (until the mid-30s) and then showing a small decline until older adulthood (the mid-70s), when symptoms again increase with age. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Voices of fear and anxiety and sadness and depression: The effects of speech rate and loudness on fear and anxiety and sadness and depression.

Two studies investigated the role of expressive vocal behavior (specifically, speech rate and loudness) in fear and anxiety and in sadness and depression. In the 1st study, participants spoke about personally experienced fear and anxiety-arousing and neutral events using 3 different voice styles: fast and loud, normal, and slow and soft. In the 2nd study, participants spoke about personally experienced sad or depressing and neutral events using the same 3 voice styles. In both studies, the participants' highest levels of subjective affective and cardiovascular (CV) arousal occurred when they spoke about the emotional events in a mood-congruent voice style: fast and loud in the case of fear and anxiety, and slow and soft in the case of sadness or depression. Mood-incongruent voice styles canceled the heightened levels of CV arousal normally associated with these negative emotions. The voice-style manipulation had no significant effect on the participants' levels of CV arousal during the neutral discussions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Status and solidarity in social comparison: Agentic and communal values and vertical and horizontal directions.

Social comparison involves positioning the self relative to others on a vertical or status dimension (ranging from upward to downward comparisons) and a horizontal or solidarity dimension (ranging from contrastive to connective comparisons). Across 3 studies in which 389 undergraduates recorded everyday social comparisons (n = 4,417), downward and connective comparisons were rated as more helpful and mood enhancing than upward and contrastive comparisons. The effects of horizontal comparisons were greater for people for whom solidarity was an important value; however, the effects of vertical comparisons were not greater for people who valued status. The roles of the comparison target, topic, and situation were also explored; for example, noticing undesirable features of the target enhanced status but undermined solidarity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

《儿子与情人》的语码转换与男女二元对立

劳伦斯小说《儿子与情人》一个鲜明的语言特色就是标准英语和当地方言频繁的语码转换。莫瑞尔用方言来对抗妻子，而妻子坚持用标准英语，偶尔也用方言来讽刺、挖苦丈夫。语码转换反映了劳伦斯男女二元对立的哲学思想。     

钢铁产品交易与展示平台的设计与应用

为解决单个企业的信息化投资风险、从整体上降低企业信息化投入,针对大邱庄钢铁产业的类型特点,设计了一种新型信息化公共服务平台。详细阐述了钢铁产品展示及交易平台的建设内容及系统开发技术。该平台集产品展示、信息查询、用户管理功能于一体,实现了全自动、全智能的在线管理和维护,适用于中小型企业。该平台的应用最大化地发挥了大邱庄的产业优势,对大邱庄工业园区的宣传和市场开拓起到了一定的作用。