辊压机水泥联台粉磨系统生产设计应注意的问题

山水集团新建粉磨站均采用辊压机和水泥磨组成的联合粉磨工艺，全部采用了国产化设备，且所建生产线均在短期内顺利实现了达标达产。文章概要介绍了该类粉磨生产线的主机配置及工艺流程；重点分析了为确保该类生产线的快速建成、高效益运行．在设计和生产管理中应该注意的相关问题和细节。     

Recovery of eicosapentaenoic acid from fungal mycelia by solvent extraction

Utilization of lipids containing eicosapentaenoic acid (EPA) produced by microorganisms requires processes for their efficient recovery from microbial cells. Recovery of EPA from mycelia of the fungusPythium irregulare by solvent extraction with hexane-isopropanol (HIP) in a pilot-plant colloid mill was investigated. Extraction efficiencies of 96% for lipid and EPA were achieved with a 3∶2 (vol/vol) HIP mixture by milling wet, filtered mycelia for 5 min at a solvent/dry solids ratio of 100 L/kg. The process yielded a crude extract that contained up to 96% lipid and an EPA content as high as 24% (with no selectivity for EPA).     

用对流磨粉碎石灰石的试验研究

本文扼要介绍了对流磨的结构与粉碎原理，及粉碎石灰石的试验研究。研究的主要内容是给料粒度与粉碎产物细度和能量效率的关系，以及喷嘴形状与能量效率的关系。     

提高φ5m×11.5m生料磨产量的措施

针对粘土资源枯竭问题,江苏巨龙水泥集团实施了以粉煤灰和硅石代替粘土的技改工程。但改造后因原料的变更,导致入房物料易磨性变差而影响了φ5m×11.5m生料磨的产质量,并进一步影响察系统的运行。因此该厂在工艺分析的基础上,采取了调整钢球级配、用高铬球替代合金刚球、改造选粉机、加强石灰石二破的管理和减少系统是否是“漏风”等技术措施,效果显著。改造后的生料磨台时产量比调整前提高了12t/h,且节电效果显著。     

球磨效率探讨

主要讨论了球石的装载量、球石空隙率、球石级配、泥浆密度等因素对球磨效率的影响。运用正交试验优选了各因素。     

MLS4531立式辊磨的开发与研制

在研究国内外立式辊磨的基础上开发出MLS4531立式辊磨,结合工程实际优化了技术参数、研磨机构及其附属装置。在调试中对MLS4531立式辊磨的液压系统,安全装置进行了改进。     

利用震动磨超细粉碎天然羟基磷灰石

本文利用震动磨对羟基磷灰石进行超细粉碎,优选出震动磨超细粉碎的最佳工艺条件。利用震动磨研磨可以得到粒度分布单一的粉体样品,D50为2.001μm。     

研磨设备的研磨效率与不同研磨方式对涂膜性能的影响

讨论了影响和提高研磨效率的因素，主要探讨了砂磨机和球磨机的研磨效率和不同研磨方式对涂膜性能的影响；着重研究了篮式砂磨机和球磨机这两种研磨方式在涂料耐磨性方面的差别，以及篮式砂磨机砂子填充量对研磨效率的影响。     

Preparation and characterization of stainless steel/TiC nanocomposite particles by ball-milling method

A stainless steel/10wt%TiC nanocomposite particles were prepared by high-energy ball-milling method using stainless steel, carbon and titanium as raw materials. The evolution of phase composition, microstructure and specific surface area of the stainless steel/TiC nanocomposite particles with increasing ball-milling time in the range of 0–100 h were investigated by XRD, SEM, TEM and BET techniques. The results showed that the stainless steel/TiC nanocomposite particles were fabricated when the ball-milling time was longer than 20 h. However, the nanocomposite particles were soldered and agglomerated again when the ball-milling time was longer than 60 h. The microstructure of the composite particles transformed from lamellar structure to nanostructure during the repeated process of the cold welding and cracking. TEM image reveals clearly that the in-situ TiC nanoparticles with grain size of 3–8 nm are in the interior of the stainless steel/TiC nanocomposite particles obtained by ball-milling 100 h. Funded by the Natural Science Foundation of Hubei Province (No. 2006ABA304)     

机械合金化法制备W-Cu合金粉末的研究

将W80Cu20（n（W）：n（Cu）=4：1）混合粉末在QM-BP式行星式高能球磨机中球磨进行机械合金化,研究了不同球磨时间对W-Cu混合粉末组织的影响.采用XRD和SEM对不同球磨时间的粉末进行分析,结果显示随着球磨时间的增加,混合粉末产生合金化效果不断增强,Cu固溶于W中,并且晶粒尺寸得到一定的细化.