铝-锂合金垂直半连铸凝固过程温度场模拟

在阐述Al-Li合金熔铸特点基础上讨论了该合金垂直半连铸凝固过程温度场模拟问题.讨论时.把问题当作非稳态,并考虑结晶潜热.用交替隐式差分法计算了不同熔铸工艺条件下的温度场.对计算结果作了分析.讨论并和实验结果作了对比,指出了熔铸工艺条件对温度场的影响.     

油田钻井废泥浆无害化处理技术研究

介绍了以整体法处理钻井废泥浆所用无害化固定剂的配方及处理效果；全井处理工艺及处理效果，覆土还田后作物体内重金属残留．用本技术处理分散型钻井废泥浆（毒性最大的）可达到国家对工业固体废弃物排放的要求．处理费用为２０元／ｔ，是已知各类方法中最低的．     

压室内金属凝固的二维计算机模拟

针对冷室卧式压铸机压室的工作环境，运用2种热传递数学模型，使用ABAQUS软件模拟压室在工作过程中的压室内铝合金二维温度分布及其凝固状态。对比模拟结果，判断不同数学模型对模拟结果的影响。     

Solidification of tannery wastes

The high chromium concentrations in tannery-wastewater treatment-plant sludges, render them unsuitable for direct disposal. Therefore, one aims to fix the chromium of the tannery waste by adding different additive materials to cause solidification. The properties of the raw sludge were determined and subsequently, the sludge was mixed with cement and additives and left to solidify for 28 days. During the study, 28 different mixtures were prepared and their compressive strengths were determined. Standard elutriation tests were carried out with each solidified sample. Compressive strengths were obtained below the desired concrete strengths. Most of the pollutant parameters in eluate were under the required values.