Φ3.2 m×5.4 m溢流型球磨机进料部实际应用及优化研究

针对Φ3.2 m×5.4 m溢流型球磨机进料部在实际应用过程中存在的问题进行研究分析,以解决Φ3.2 m×5.4 m溢流型球磨机在连续、高负载荷环境下的进料衬套松动、中空轴漏浆及进料溜管密封失效等问题。首先,介绍Φ3.2 m×5.4 m溢流型球磨机进料部的组成;其次,介绍Φ3.2 m×5.4 m溢流型球磨机进料部主要存在的问题;再次,通过分析研究存在的问题,结合现场实际,通过机械结构优化实施必要的防范措施,以解决存在的应用问题;最后,分析总结Φ3.2 m×5.4 m溢流型球磨机优化升级的功效。

φ3.2m×3.1m格子型球磨机进料部结构分析与改进

对φ3.2m×3.1m格子型球磨机进料部结构及其在使用中存在的问题进行了详尽的分析,对进料部进料衬套结构与紧固方式、联合给矿器结构和进料端盖保护方式提出了有效的改进措施。实践证明,改进后的进料衬套紧固牢固,安装方便,有效地减少了联接螺栓松动、撸丝甚至螺钉断裂情况,联合给矿器的寿命得到了显著提高,进料端盖得到了有效保护。

球磨机进料部密封结构的改进措施

球磨机中空轴进浆磨损是矿山企业常见的故障隐患，该隐患如长期存在而得不到有效解决，最终必然会酿成中空轴磨漏的恶性事故。中空轴进浆磨损是一个较为缓慢的过程，从进浆到磨漏往往要经历5～6年甚至更长的时间；而且，中空轴进浆会有外观表现，即进入中空轴的矿浆，其浆水会从衬套与中空轴的联接法兰处泄漏出来。

步进梁式钢管再加热炉端部进料装置

步进梁式钢管再加热炉端部进料在国内尚属首例。文中对侧进料和端进料进行了比较,详细分析了端进料的主要结构及特点,指出了端进料装置的应用前景。

The Decision-Making Processes of the Agents Belonging to the Biodiesel Production Chain in Southern Brazil

The aim of this paper is to present and analyze the factors, motivations and criteria considered in the decision-making processes of the actors belonging to the biodiesel production chain in Brazil. The biodiesel production chain consists of three main agents： the farmers, the soybean processing plants and the oil refinery/distributor. For the farmers organized in cooperatives the central decision is whether to sell oil-bearing crops for the production of biodiesel. In contrast, for the soybean processing plants that convert the crops into vegetable and/or biodiesel, the decision to produce this fuel is based on the wish to expand their market portfolio. Government tax incentives strongly influence both decisions regarding which oil-bearing crop to use and the amount of vegetable oil to be transformed into biodiesel. Finally, the oil refinery/distributor is obliged by law to mix the biodiesel with the mineral diesel and perceives this as a liability. The results show the existence of different characteristics linked to the decision-making process and a significant lack of synchronicity in the aims and motivations behind the agents＇ decisions. This state of decisional misalignment leads to heightened uncertainty regarding the sustainability of the Brazilian biodiesel production program.