TK200通讯控制系统的探讨

介绍了TK200通讯、控制系统设计上的优点、组成及工作原理。     

水力旋流器参数计算及其仿真软件研制

本文给出了水力旋流器工艺参数计算及仿真系统的研究结果。本系统是在Windows环境下用Delphi开发的，具有对旋流器的工艺参数进行综合计算及分级效果计算机仿真功能。计算的结果准确可靠，效率曲线美观。算例表明，本系统为旋流器生产工艺参数和旋流器的优化设计提供了有效手段。     

Computer simulation of combustion of mine fires

According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of physical chemistry and thermal fluid mechanics, the parameters models of the unsteady state system have been given, such as fuel combustion rate, heat of combustion, concentration, temperature, heat losses, heat resistance, work of expansion and heat pressure difference. The results of the calculation agree approximately with the results of the test. By the computer simulation, it is shown that the main factor of producing the throttling effect is the fire rate, second is the heat resistance and the heat pressure difference. The rate of heat flow that passes through the airway wall is the maximum on the surface, and decrease with time. The heat transfer progresses only within the range of 0..5 m away from theairway wall during combus-tion for 2 hours. It‘s variable for the mass flux rate and the percentage concentration of the gas along the airway of the downstream. When the delayed time is very small, the varidtion can be neglected. Viscosity resistance is the main part of the heat resistance, second is the expansion resistance that is less than tens Pascal when Mach number is very small. Work of expansion is principally tumed into heat losses, only a very small part is consumed by the work of the heat resistance and the inertia acceleration.     

关国Highland铀矿碱法地浸采铀工艺

Highland铀矿是西方国家最大的铀地浸矿山之一，采用典型的美国碱法地浸工艺，即以CO2和O2配制溶浸剂进行浸出。介绍了Highland铀矿采用的井场设计与建设、环境评价与监测、生产操作和地下水复原等方法，以及Highland铀矿的地质概况。     

某地下矿山动态数据库系统的研究

本文研究了在微机上建立无底柱分段崩落法地下开采动态数据管理系统的设计思想、设计路线和设计内容，并将其应用于武钢大冶铁矿的具体条件下，为矿山技术管理现代化提供了有力的工具     

年产400t轻钙/重钙活性复合粉中试研究及生产

用表面改性法制备轻钙／重钙活性复合粉的中试研究表明：表面改性反应采用间歇式操作搅拌反应釜是合适的；小试提供的原料线路是可行的，工艺条件是正确的；进一步放大在满足工艺条件的前提下，单元反应时间不超过60min，中试装置的生产能力为400t／a，产品活性复合粉的表面改性效果较好，粒径为0．95μm。收率达到90％以上。