拟建配套选煤厂原煤入选率可选性分析

文章分析了正明煤业有限公司拟建选煤厂的原煤可选性,对筛分、浮沉以及可选性相关资料进行了分析,为选煤厂的工艺选择、设备选型、后期建设等关键环节打下了基础。     

家纺面料的防螨抗皱整理与性能测试

采用适当的工艺对家纺面料进行防螨抗皱整理,测试了相关的性能,结果表明,家纺面料经防螨抗皱整理后,螨虫驱避率达到93.76%,水洗后可达80%左右,厚度和透气性均有不同程度的提高,强力和透湿性稍有下降,抗皱性和柔软性得到改善,使用性增强。     

煤的可选性评价方法的一种途径

分析了现有煤的可选性评价方法及其存在的问题。总结了从煤岩学角度研究煤的可选性的知识特点，指出用专家系统作为煤的可选性评价方法是研究煤的可选性评价方法的一种途径。     

Gravity separation of oil shale and low-temperature pyrolysis characteristics of different density fractions

In this paper, gravity separation of Huadian? (HD) and Longkou? (LK) oil shales and low-temperature pyrolysis characteristics of their different density fractions have been studied. The gravity separation results showed that kerogen could be enriched using the gravity separation method. The low-temperature pyrolysis results showed that the highest oil contents of HD and LK were in the density fractions of 1.4–1.5 and 1.5–1.6 g·cm^?3, respectively. Meanwhile, for the low-temperature pyrolysis, the oil/gas ratio decreased with the density increase, indicating higher gas loss and lower oil yield with the increase of density. The mineralogical analysis showed that most of the organic matter were associated with clay minerals, and the organic matter could not fully liberate from the matrix under coarse particles. The migration and occurrence of minerals and organic matter in different density fractions generated various pyrolysis characteristics.     

宝日希勒褐煤及其半焦制品的可选性分析

通过试验分析了宝日希勒褐煤及其半焦的可选性,结果表明:宝日希勒褐煤及其半焦是可选的,采用褐煤制备半焦,再对半焦进行分选,可获得多种半焦产品;并且,褐煤在制备半焦的过程中易发生碎裂,使得半焦的粒度上限小于褐煤的粒度上限,有利于半焦的洗选加工。     

Integration of stretchable and washable electronic modules for smart textile applications

Today electronics in “wearable systems” or “smart textiles” are mainly realised on traditional interconnection substrates, like rigid printed circuit boards or mechanically flexible substrates. The electronic modules are detachable to allow cleaning and washing of the textile. In order to achieve a higher degree of integration and user comfort, a technology for flexible and stretchable electronic circuits was developed. The electronic system is completely embedded in an elastomer material like polydimethylsiloxane (PDMS, silicone), resulting in soft and stretchable electronic modules. The technology uses standard packaged components (ICs) and meander-shaped copper tracks, so that stretchable systems with complex functionality can be achieved. This paper describes how these stretchable modules can be integrated in textiles. Also the influence of the PDMS on the stretchability of the textile has been examined. A basic electronic module with blinking light emitting diodes (LEDs) was designed and produced to illustrate the textile integration and to perform initial washing tests.     

用煤芯煤样进行煤炭可选性研究

煤炭工业部标准ＭＴ３２０－９３《煤芯煤样可选性试验方法》已在全国广泛使用，它的主要特点是试验煤样用量少，采样点多，用煤芯煤样进行可选性的研究结果可以充分显示煤层三维空间上的可选性变化规律．测定煤样的密度组成不仅可用浮沉试验方法，也可用煤岩学方法．用煤芯煤样可选性资料作为选煤厂的设计依据，将从根本上保证选煤厂的工艺设计质量．     

简单实用的可选性曲线画法

可选性曲线是煤质分析和选煤厂设计的基础,因此,如何既简单又准确地画出可选性曲线 显得尤为重要。文章结合大家熟练掌握的计算机知识,介绍了可选性曲线的又一种简单画法。     

孟南庄选煤厂工艺制定及生产实践

阐述了孟南庄选煤厂的工艺流程及工艺特点。针对选煤厂存在的主要问题,从煤泥水沉降、干扰床床层稳定、底流管堵塞、精煤带矸4个方面提出了相应的技改措施。实践证明,技改后明显改善了旋流器分选效果,脱介效率高,介耗明显降低,干扰床分选机精煤灰分稳定,浮选精煤灰分在10％以下,浮选尾煤灰分在50％以上,达到了预定效果。     

生物质环保阻燃剂PD的制备及其阻燃性能

为解决纯棉织物的阻燃及其耐洗性问题,以生物质植酸和双氰胺为原料,制备了无卤生物质环保耐洗阻燃剂PD,并应用于棉织物的阻燃整理。借助傅里叶红外光谱仪和X射线能谱仪等分析表征了PD化学结构和元素组成,并对整理织物的表面形貌、热稳定性、阻燃及耐水洗性等进行了分析。结果表明:阻燃剂PD为多活性磷氮型阻燃剂;纯棉织物阻燃整理时,阻燃剂PD质量分数为35%;PD处理样在800 ℃热解残炭量为13.32%(氮气气氛),垂直燃烧的损毁长度为4.5 cm,极限氧指数达43.6%,且阻燃织物经40次标准洗涤后,极限氧指数仍能达到29.1%;制备的阻燃剂PD是一种阻燃效果和耐水洗性能优良的生物质环保阻燃剂。