人造金刚石酰洗与电解触媒废液的综合利用研究

提出了从人造金刚石酰洗与电解解媒废液中回收镍钴锰的方法。给出了最佳制备工艺,回收制备的镍粉、氧化钴及硫酸锰质量均符合或优于国家标准,回收工艺简单,经济效益显著。     

选择性沉淀法从废催化剂中回收金属钯的研究

提出了选择性沉淀法从废钯炭催化剂中回收金属钯的方法，给出了最佳制备工艺参数，回收制备的金属钯粉达到国家标准要求，工艺简单，金属回收率高，成本低，经济效益显著。     

硫酸锰溶液制备过程的环境保护设计

本文介绍了硫酸锰溶液制备工艺中锰的污染及其治理工艺设计。锰对人体的主要侵害来自粉尘。对于锰盐制备过程中的污染治理,应着重放在回收利用,减少排放,少用或不用化学处理工艺,避免二次污染。     

以废旧电路板为原料制备超细铜粉的工艺研究

研究了一种从废旧电路板中湿法回收铜并制备超细铜粉的新工艺。首先物理分选出含铜的组分,再采用硫酸铜-盐酸-正丁胺混合体系浸出铜,萃取-反萃工艺获得CuSO_4·5H_2O晶体,以此作为制备超细铜粉的原料。后用葡萄糖预还原,再以抗坏血酸为还原剂,进行二次还原,获得200 nm至1μm不同粒径范围的超细铜粉。制备出的铜粉粒度均匀,结晶度高,分散性好,无团聚现象,实现了废旧电路板的高附加值回收利用,增加了工艺的竞争优势。     

稀土熔盐渣中有价金属综合回收技术研究现状及进展

中国是稀土生产大国，在每年的工业生产中都会产生大量的稀土固废，其中熔盐电解法制备稀土金属过程中产生的熔盐电解冶炼渣成分复杂、稀土含量较高(20%～80%,以稀土氧化物计)。结合国家稀土资源的可持续发展战略，本文针对稀土熔盐渣中稀土元素等有价金属的综合回收方法进行了综述总结，包括酸浸回收法、碱转酸浸法、盐转焙烧法等工艺，分析对比了各回收工艺的原理、特点和优劣，总结概述了各工艺综合回收稀土等有价金属时的最佳条件，为后续探究高效回收稀土等有价金属的工艺、解决稀土资源短缺问题提供了参考与技术支持。     

盐酸法处理硬质合金粉双回收Co和WC新工艺研究

设计了用盐酸法处理废旧硬质合金粉,双回收高纯度金属钴和碳化钨的工艺,并采用液相还原法一步制备金属钴,是一种工艺简单、能耗少、成本低、污染小的新工艺。研究考察了盐酸浓度、反应时间、温度对钴浸出量的影响,并对回收的金属钴和碳化钨进行了XRD、SEM等表征,结果表明得到的金属钴为粒径0．2～0．55μm的球形微粒,碳化钨为质地疏松易于球磨的颗粒,且两种回收物的纯度较高。     

铜渣资源回收的研究现状及展望

综述了国内外对铜渣中有价元素回收和资源化综合利用方面的研究现状.针对铜渣中高品位的铁,主要从氧化焙烧磁选法和直接焙烧还原法2种工艺对铁资源回收处理的优势及缺陷进行讨论研究;对钴、锌、铜、金、银、铝等有色金属元素回收率和回收工艺进行比较;根据铜渣本身的物相构成,阐述了铜渣在制备建筑材料、微晶玻璃和废水处理方面的应用现状;...     

提金活性炭的研究现状及其展望

在简述炭浆法提金工艺以及提金活性炭的制备、结构、性能的基础上,介绍了目前以不同原料和活化方式制备的提金活性炭和用各种活性炭吸附回收金的研究现状,并对今后的发展前景作了展望.     

冶炼烟气中硫资源回收制备液态二氧化硫技术

冶炼烟气中富含大量的硫资源,如何有效回收利用该资源一直是行业的研究方向。新型的可再生胺法脱硫技术对冶炼烟气中二氧化硫进行提取,然后冷冻液化制备液态二氧化硫,该工艺一方面保证了处理后烟气的达标排放,另一方面成功将回收后的硫资源转化为高附加值产品。基于这两方面的优点,这一工艺越来越多的成为烟气中硫资源回收技术的选择。     

从黑钨矿中回收高纯钨的方法美国专利4092400

本发明的背景众所周知,已采用各种方法从含钨矿石内回收钨。常用的工艺是从被富集的矿石内回收纯度比较高的钨化合物,然后再用它制备其它化合物或金属钨。例如仲钨铵可用作制造钨丝的原料。钨矿石含有其它化学元素,而且这些元素存在于回收的工艺过程中并污染最终产品。对于大多数应用来说,最重要的是在回收过程中除掉杂质。     

Phonological processing skills and the Reading Recovery Program.

Sought to determine whether the Reading Recovery Program would be more effective if systematic instruction in phonological recoding skills were incorporated into the program. First-grade at-risk readers were divided into 3 matched groups of 32 children each; a modified Reading Recovery group, a standard Reading Recovery group, and a standard intervention group. The children in the modified Reading Recovery group received explicit code instruction involving phonograms. Results indicated that, although both Reading Recovery groups achieved levels of reading performance required for discontinuation of the program, the modified Reading Recovery group reached these levels of performance much more quickly. Results further indicated that the children selected for Reading Recovery were particularly deficient in phonological processing skills and that their progress in the program was strongly related to the development of these skills. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Responses eliminated by noncontingent or negatively contingent reinforcement recover in extinction

Autoshaped key pecking in pigeons was eliminated by presenting reinforcers only during non-CS periods (negatively contingent reinforcement) or in both non-CS and CS periods (noncontingent reinforcement). In either case, when all reinforcers were subsequently removed (simple extinction), responding recovered strongly (Experiment 1). Recovery in extinction occurred only if the CS was in a conditioned state when non-CS reinforcers were introduced (Experiment 2). Recovery from noncontingent reinforcement was virtually complete, since total responding in extinction after response elimination was not less than in control groups extinguished without an intervening response-elimination phase (Experiment 3). Recovery also occurred for nonautoshapable, instrumentally reinforced key pecking (Experiment 4). The hypothesis that recovery is due to reinstatement of the non-CS stimulus conditions of acquisition (absence of food) was not supported (Experiments 5 and 6). Other accounts of recovery are considered.     

预应变对Ni50.2Ti49.8合金记忆特性的影响

研究了Ni50.2Ti49.8合金在5种不同预应变(1.96%,3.96%,5.88%,7.85%,9.96%)下的回复应变和逆相变温度;恒定预应变5.88%下,热机械循环对回复应变和逆相变温度的影响。结果表明:预应变使得逆相变温度升高,预应变越大逆相变温度越高。随着预应变的增加回复应变增加,预应变增加到一定程度时回复应变达到最大值,随后回复应变随预应变增加而减少。恒定预应变下热机械循环,随循环次数增加,逆相变温度下降,回复应变减少,随着循环次数进一步增加,逆相变温度和回复应变逐步达到稳定值。     

八钢120t转炉煤气回收现状分析

转炉煤气回收的关键环节取决于设备的正常运行和转炉的脱碳操作,分析了新疆八一钢铁股份公司第二炼钢厂3×120t转炉煤气回收过程中的主要影响因素,针对目前的现状提出了改进方法。     

以焙烧—湿法工艺从含金废料中回收金

针对紫金矿业集团黄金冶炼厂产出的含金废粒,进行了焙烧－湿法回收金的工艺研究。含金废料经焙烧去除炭质和有机物后,经氰化浸出、炭吸附回收金,金回收率可达90％以上,该工艺成本低,易实施,可获得良好的经济效益。     

Comparative recovery following simultaneous- and successive-stage frontal brain damage in mice.

Conducted 5 experiments with female CF1 mice sustaining sham-operations, simultaneous, or successive bilateral frontal pole transections. Recovery of a passive-avoidance deficit occurred following both simultaneous and successive transsections. Recovery was a function of time either following the simultaneous procedure or between the 2 stages of the successive procedure. Recovered simultaneous Ss were hyposensitive to impairment of passive-avoidance learning by d-amphetamine, whereas recovered successive Ss were not. Alpha-methyltyrosine facilitated recovery following either simultaneous or successive brain damage. Results are consistent with a denervation supersensitivity model of recovery of function. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

从硅载体的高磷,钼,钴,镍催化剂中提取有价金属的研究

论述了从高磷硅酸载体丙烯腈催化剂中提取有价金属元素的工艺，着重论述了钼的回收及利用，从试验和生产结果来看，效果较好，现已获得应用。     

WebFieldECS-100在高炉TRT控制中的应用

高炉煤气余压透平发电TRT-（Blast Furnace Top Gas Recovery Turbine Unit,以下简称TRT）是冶金行业中公认的节能手段。本文采用浙大中控WebField ECS-100 DCS控制系统实现攀钢新#3高炉TRT透平发电装置的控制。通过对DCS系统硬件、软件的设计与调试,成功实现了TRT装置的并网运行,为企业创造了较大的经济效益、为TRT装置的控制积累了大量的经验。     

Methods to assess the development and recovery of locomotor function after spinal cord injury in rats

Recovery of comprehension and total language in 22 Wernicke's aphasics was correlated with lesion size and extent of involvement of certain structures on CT. Recovery rates and outcomes were separately examined using 0-3 months and 0-12 months poststroke language data. Quantitative measures of structural damage were regressed on total aphasia and comprehension outcome measures. Supramarginal and angular gyri appeared to be the most significant structures in recovery in addition to initial severity and lesion size. This was confirmed by using ANOVA to compare the extent of involvement in each postcentral structure among the poor, moderate, and good recovery groups. The superior temporal and middle temporal gyri are less involved in the good recovery group. Structures posteriorly adjacent to Wernicke's area are important for compensation in Wernicke's aphasia and in the accompanying comprehension deficit. Persisting Wernicke's aphasia usually involves the supramarginal and angular gyri in addition to the superior temporal area.