High Chrome Containing Refractories for Coal Slurry Gasifier

Water, oxygen and coal are converted into CO, H2, methane in the coal slurry gasifier. Under the condition of high temperature and high pressure, high chromecontaining refractories are used as hot face lining. The collapse of refractories from corrosion and spalling is mainly attributed to liquid deslagging. Refractories for coal slurry gasifier, destruction mechanism and solutions are analyzed.     

狭缝式透气砖的研制与应用

采用高性能铬刚玉质浇注料 ,通过合理的狭缝设计 ,研制了狭缝式透气砖。该砖具有吹成率高、寿命长、安全可靠等优点 ,适用于大型精炼钢包     

基于单片机的微碳铬铁快速定硅仪

介绍了利用热电效应进行微碳铬铁中硅的含量测试原理，着重介绍了由MCS-51单片机构成的炉前微碳铬铁快速定硅仪研制过程。该仪器能快速定硅、有效控制产品中的Si含量、节约费用。还可以扩大仪器的功能，应用到低碳、中碳铬铁中的含硅量的测试。关键词：热电效应；微碳铬铁；单片机；快速定硅     

Synthesis of Sintered Galaxite Clinker for Chrome-free Bricks

Galaxite clinker as refractory starting material has been fabricated using chemically pure MnO2 and Al2 O3 as starting materials at various processing atmospheres and temperatures under the guidance of thermodynamic simulation.A dense galaxite clinker can be synthesized at low cost under 0.04%-99.98% CO partial pressure created by coke bed in sealed sagger.     

铬革渣在产蛋鸡体内的分布及其迁移规律的研究

文章分析了动物体内铬的来源及其危害,并对饲料以及用普通饲料饲养一年的产蛋鸡的鸡蛋、鸡肝、鸡肺中的铬进行了测定。测定数据表明,铬主要累积于鸡肝、鸡肺中,含量较高,接近或超过临界值,对人们的正常饮食有潜在危害。本研究不仅具有理论基础,并且对人们的日常饮食具有指导意义。     

芯棒镀铬装置的设计

简单描述了目前国内芯棒生产的现状,提出了芯棒表面镀铬装置存在的问题,介绍了赛瑞公司自主研发的芯棒镀铬装置的设计背景,阐述了芯棒镀铬装置的基本结构及设备特点,解决了现存的一些问题。     

铬、镍、铜、磷、氰现场快速检测

为了快速检测废水中的铬、镍、铜、磷、氰等有害物质,采用自制的一些化学试剂,对Cr6 、Ni2 、Cu2 、P5 、CN-在废水处理现场进行目视比色检测,速度快,能迅速判定废水中有害物质是否达到国家规定的排放标准,检测结果合格达标即可排放,省时、省费用、简捷方便、适宜工矿企业废水处理中有害元素Cr6 、Ni2 、Cu2 、P5 、CN-的快速检测.     

电镀高质量耐磨硬铬工艺的研究

本文对大面积工件电镀高质量耐磨硬铬工艺作了研究,发现影响镀层质量的因素基本有二:(1)基体表面是否存在凹形缺陷,及造成这种缺陷的原因是电镀前处理过程中,酸浸活化及阳极电解活化步骤溶解脱落了金属基体中的夹杂。(2)溶液中的粉尘杂质的存在,将会导致镀层表面产生铬瘤。为此作者提出以分次电镀加焊补为主,以强化过滤电解液为辅的工艺方法。经实践证明本法有效地保证了镀层质量。     

Preparation of Comb-Like Amphiphilic Styrene Maleic Anhydride Copolymer Derivatives and Their Modification to Surface of Chrome-Tanned Collagen Fiber

A series of comb-like amphiphilic surfactants of sodium salts of fatty alcohol polyoxyvinethene monoester, i.e., SMA-g-O-3, SMA-g-O-6, SMA-g-O-10, SMA-g-O-15 and SMA-g-O-20, were prepared through the esterification modification to styrene-maleic anhydride copolymer (SMA) using fatty alcohol polyoxyethylene ether in dimethylformamide(DMF). The products of esterification modification were characterized by FTIR and GPC analysis, and the esterification reaction rate was calculated by measuring the acid values of SMA and its esterification product. Then, sodium salts of those esterification substances were applied to the leather retaining and fatliquoring process to study their effects on hydrophobicity of the treated leather fiber, such as static Water Contact Angle (WCA) on the leather surface and water absorption of the treated leather. Results showed that all the esterification rates were more than 90 %; moreover, both the WCA and water absorption of the processed chrome-tanned collagen fibers were related to the number of oxyethyl groups in the fatty alcohol polyoxyethylene ether. WCA decreases and water absorption increases instead with augmentation of the oxyethyl group number.     

芯棒镀铬阴极夹钳设计

针对目前国内芯棒镀铬设备电能利用效率较低问题,研制了一种新的导电装置——阴极夹钳,改变了导电方式,提高了电能的利用率,改善了镀铬的质量。介绍了新研制的阴极夹钳的工作原理、基本结构和设备特点。