锦纶包布对全钢载重子午线轮胎胎圈性能的影响

采用有限元分析方法研究全钢载重子午线轮胎胎圈部位采用锦纶包布层以及锦纶包布帘线与胎体帘线成不同角度情况下的胎圈性能。结果表明。当锦纶包布帘线与胎体帘线的夹角较小时，胎体反包端点上单元和右单元的综合应变和综合应力较小，胎体反包端点的剪应变和应变能密度也较小；夹角增大及无锦纶包布时，综合应变、综合应力、剪应变和应变能密度增大，说明采用锦纶包布、减小锦纶包布帘线与胎体帘线的夹角有利于提高胎圈性能。     

废玻璃强紊流分选机理及实验研究

简要介绍了废玻璃强紊流分选装置的结构,从物理力学性质出发论述了强紊流分选废玻璃的工作机理。实验研究表明,利用强紊流分选技术回收废玻璃的回收率在90％以上。     

大采空区灾害控制技术的数值模拟

不少金属矿山由于前期民采在井下遗留下大小不一的众多空区,其中某些采空区体积多达数万立方米,暴露面积达数万平方米,是造成大规模冲击地压及塌陷隐患的主要诱因。为保证下部及相邻中段安全回采,提出在合理水平实施废石充填,形成应力隔离层。以某金矿为例,采用数值模拟手段研究了大采空区充填前后围岩应力及剪应变增量情况。分析计算结果表明,充填处理后,大采空区围岩应力集中程度明显减小,拉应力区域相应减少且值较小,剪应变增量值减小且剪应变增量区域不贯通,安全隐患得到消除。     

垃圾焚烧锅炉的自动控制系统

垃圾焚烧，是目前城市生活中处理垃圾的一种新兴途径。本文介绍了其中一种垃圾焚烧炉的控制回路，并对每一个回路的控制策略进行简单的描述。     

模拟含硼废液喷雾干燥试验

研究了三种喷雾干燥方式处理模拟含硼废液试验的性能和影响因素.三种喷雾干燥方式为:旋转式雾化并流喷雾干燥、气流式雾化并流喷雾干燥和气流式雾化混合流动喷雾干燥.对于硼浓度21 000 ppm(10-6)的模拟含硼废液,在供料温度为62～64 ℃,干燥塔进出口温度分别为210～220 ℃和110～120 ℃,压空流量为8.0 m3/h,雾化器转速为73.0 m/s的条件下,三种喷雾干燥方式均得到了流动性良好的粉体,粉体中占总质量95%的粉体粒径在0.356～0.061 mm之间.三种喷雾干燥方式处理模拟含硼废液的减容系数在0.22～0.27之间,气流式雾化并流喷雾干燥方式、气流式雾化混合流动喷雾干燥方式和旋转式雾化并流喷雾干燥方式的废液处理能力依次增大,所得粉体的含水率依次增大.     

Driving forces and obstacles with regard to co-operation between municipal energy companies and process industries in Sweden

District heating networks can technically enable energy-related co-operations between energy-intensive industries and municipal energy companies. The most common form of co-operation is to utilise industrial waste heat as the primary energy source in district heating networks. However, another type of co-operation is to jointly own a plant that produces both process steam for the industry and hot water for district heating. In this article, eight Swedish energy co-operations are studied and the main focus is on the process leading to co-operations of this kind. Different aspects of factors that facilitate or obstruct the start up and continuous daily operation of a co-operation are discussed. The main conclusion is that while the primary reasons for the foundation of such co-operations are favourable techno-economic factors, this is not enough for a co-operation to emerge. This study highlights the importance of people with a real ambition to co-operate in both parties in the co-operations.     

成本改善在炼钢生产中的实践

根据目前市场形势以及宝钢股份炼钢厂的生产特点,总结了2016年以来炼钢厂通过推进成本管理模式创新、能源管理模式转变、少渣冶炼工艺推进、直接出钢工艺、连浇炉数提升、加强成本对标等措施,提高了精细化成本管理水平,各方面消耗均有长足进步,实现了低成本规模化生产,同时为同行业如何在市场严峻的形势下取得好的效果提供参考与借鉴。     

Effect of permanent magnet stirring on internal quality of steel

Permanent magnet stirring (PMS) featuring low power dissipation and high-intensity magnetic field was investigated as a means of decreasing internal solidification defects. In this study, the magnetic Taylor number (Ta) was used to quantify the melt ?ow. Initial research of PMS involved a laboratory study of the solidification of Sn–20 wt-% Pb alloy. An industrial plant trial with continuously cast tire cord steel confirmed that PMS, in accord with the laboratory findings, produced an improvement in central cavities in the cast product. Moreover, it was established that PMS is an alternative method for reducing carbon macrosegregation in tire cord steel billets with different section sizes. It was also found that PMS (Ta?=?8.97?×?10⁷) was more effective for improving central carbon macrosegregation of tire cord steel than electromagnetic stirring (Ta?=?6.33?×?10⁷) due to the larger Ta related to the driven-flow intensity of the residual melt.     

高放废液玻璃固化工艺冷试验装置的设计和验证试验

设计、安装了一套玻璃固化冷试验装置,作了多轮工艺冷试验,取得了一定的经验。本文介绍了装置的设计参数和工艺冷试验对设备的考验结果。     

镭厂退役废物分类与处理处置

由于镭厂退役废物的多样性,多必须适当分类后才能分别进行处理处置。利用现有条件,将含镭低放废物进行废铀矿井处置是合理,安全和经济的。