金属零件加工一体化集约生产线的研制

该生产线用于制造各类、各种形式系列齿轮、轮毂、齿套、衬套、环圈、实心轴、空心轴等回转体零件。该生产线流程和功能由双体变频式中频感应电炉＋虹吸管装置＋连续铸造结晶器＋机械手、推杆式溜槽、集物仓等辅助装置实现金属熔炼、铸坯凝固的连续铸造→感应加热铸坯→多工位柔性冲压制坯→数控碾挤、碾锻→柔性精整→可控气氛热处理等组成。     

MES系统在鞍钢无缝钢管厂的应用

介绍了MES系统在鞍钢股份有限公司无缝钢管厂的实施背景,重点对MES系统的配置和架构及其应用功能进行了描述。运行结果表明,该系统成功地将管理经验、行业经验和信息技术三者结合起来,及时地对生产实绩信息、质量信息和物料跟踪信息进行处理和存储,促进了各部门、各岗位之间的沟通,改善了生产决策环境,确保及时准确地传输信息,为企业的日常管理、决策制定提供了可靠的依据。     

Wood pellets production costs and energy consumption under different framework conditions in Northeast Argentina

The development of cleaner and renewable energy sources are needed in order to reduce dependency and global warming. Wood pellets are a clean renewable fuel and has been considered as one of the substitutes for fossil fuels. In Argentina, large quantities of sawmill residues are still unused and wood pellets production could be seen as both, as an environmental solution and an extra economical benefit. The general aim of this study was to determine the wood pellets production costs and energy consumption under different framework conditions in northeast Argentina. The specific costs of wood pellets for the different scenarios showed relative lower costs comparing to the ones reported in other studies, ranging from 35 to 47 €/Mg_pellets. Raw material costs represented the main cost factor in the calculation of the total pellets production costs. A lower specific production cost was observed when 50% of the raw material input was wood shavings. The specific electricity consumption per metric ton of pellet was lower in scenarios with higher production rate. Lower heat energy consumption was observed in scenarios that have a mixed raw material input. The most promising framework condition for Northeast Argentina, in terms of costs effectiveness and energy consumption could be acquired with production rates of 6 Mg/h with sawdust and wood shavings as raw material. However, simultaneous increment of the electricity by 50% and raw material price by 100% may increase the specific costs up to 50%.     

山东焦家金矿生产技术开发研究进展

根据焦家金矿生产现状,通过细致的分析与研究,结合井下矿岩稳固程度,各中段现有工程情况、运输轨道情况、出矿漏斗情况,有针对性的对提升运输能力、采矿工艺、浅部残采矿体回收拿出可行性的实施方案,并应用到实际生产中,在确保采、掘、充平衡发展的基础上,扩大了矿山生产能力,为矿山稳定持续发展尊定了坚实的基础。     

中国再生锌工业

介绍了中国再生锌的分类、产量估算方法、再生锌回收技术,以及再生锌发展缓慢的原因,并对其发展提出建议。     

Q345GNHL高耐候钢焊管的开发

攀长钢公司焊管钢丝厂首次生产耐候钢焊管,对其进行了系列生产工艺的研究开发。经过三次试制,确定了合理的炼钢、热轧、冷轧、焊管生产工艺,产品满足用户要求。     

Biodiesel production by microalgal biotechnology

Biodiesel has received much attention in recent years. Although numerous reports are available on the production of biodiesel from vegetable oils of terraneous oil-plants, such as soybean, sunflower and palm oils, the production of biodiesel from microalgae is a newly emerging field. Microalgal biotechnology appears to possess high potential for biodiesel production because a significant increase in lipid content of microalgae is now possible through heterotrophic cultivation and genetic engineering approaches. This paper provides an overview of the technologies in the production of biodiesel from microalgae, including the various modes of cultivation for the production of oil-rich microalgal biomass, as well as the subsequent downstream processing for biodiesel production. The advances and prospects of using microalgal biotechnology for biodiesel production are discussed.     

Hydrogen from biomass – Present scenario and future prospects

Hydrogen is considered in many countries to be an important alternative energy vector and a bridge to a sustainable energy future. Hydrogen is not an energy source. It is not primary energy existing freely in nature. Hydrogen is a secondary form of energy that has to be manufactured like electricity. It is an energy carrier. Hydrogen can be produced from a wide variety of primary energy sources and different production technologies. About half of all the hydrogen as currently produced is obtained from thermo catalytic and gasification processes using natural gas as a starting material, heavy oils and naphtha make up the next largest source, followed by coal. Currently, much research has been focused on sustainable and environmental friendly energy from biomass to replace conventional fossil fuels. Biomass can be considered as the best option and has the largest potential, which meets energy requirements and could insure fuel supply in the future. Biomass and biomass-derived fuels can be used to produce hydrogen sustainably. Biomass gasification offers the earliest and most economical route for the production of renewable hydrogen.     

检定介质制备与静力称重法容量测量不确定度研究

采用微滤反渗透电去离子法制备超纯水代替自来水做为容量计量的检定介质。测量水的氢氧同位素丰度、温度梯度和大气环境参数,进行纯水密度计算的同位素丰度、压缩修正及溶解空气修正。水样检测结果表明,所制水符合GB/T 11446.1 EW-I水标准。水密度测量的标准不确定度减小到7×10^-3kg/m3,容量基准的容量测量不确定度Urel小于3×10^-5（k=3）。