霍尔辛赫选煤厂改扩建分选工艺设计

为满足霍尔辛赫矿井产能提升需求,对选煤厂进行改扩建分选工艺设计。分析了原煤可选性,分选密度为1.70 g/cm3时,块精煤和末精煤灰分分别为13.56%、11.60%。在分析选煤厂原工艺流程的基础上,对选煤厂进行改扩建,原煤分级粒度由13 mm增至18 mm,块煤分选系统不变,增加一套末煤分选系统和一套浮选系统,并计算得出改造后产品组成为:块精煤产率21.12%,灰分12.90%;末精煤产率51.02%,灰分10.48%;中煤产率7.79%,灰分35.85%。以技术先进、性能可靠、高效低耗为原则对主要设备进行选型,新增了末煤重介旋流器、分级旋流器、螺旋分选机、浮选柱等设备,并详细分析了设备布置情况。改扩建后,选煤厂生产能力由3.0 Mt/a提升至5.0 Mt/a,提高了系统对煤质的适应性,增强了末煤产品的灵活性。     

白色耐水洗黄牛鞋面革的研制：白色可水洗性研究

在制造白色耐水洗黄牛鞋面革中，将防水加脂剂及丙烯酸树脂鞣剂单独和混合使用，研究革的白色可洗性能，通过对水洗前后的面积变化率，相对白度值变化，吸水率及透水性测定，发现了组合ＡＲＴ－１＋ＦＲＴ－１，Ｌｅｕｋｏｔａｎ１０２８＋ＦＲＴ－１的复鞣与加脂可达到成革的ＩＵＦ４２３标准。     

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。     

Review on temperature sensing yarns for smart textiles北大核心CSCD

体温是反映人体生命活动的关键信息,根据体温,尤其是对人体各部位皮肤温度的实时、精准监测可以掌握人体健康状况,及时进行诊断治疗。温度传感纱相比体温监测仪具有柔软、灵敏、轻巧等优点而受到越来越多的关注,多种形态、结构和用途的温度传感纱已被开发。为深入掌握温度传感纱的发展现状及趋势,本文首先概述热电温度传感纱、光纤温度传感纱和热阻温度传感纱的工作原理和优缺点,重点介绍热敏电阻传感纱的4种制备方法和特点;其次从传感性能和使用性能方面,概括这些温度传感纱的指标参数及影响因素;最后指出温度传感纱在产业化和推广应用方面面临的技术挑战和不足,推动智能纺织品发展。     

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.