微波辐照解毒铬渣影响因素的研究

对含铬废渣微波辐照解毒新方法进行了基础性研究,主要包括铬渣和还原剂--煤在微波场中的升温行为,操作条件(微波功率、辐照时间、配比、煤渣质量)对铬渣中Cr6+转化率的影响.应用正交试验法对影响因素进行了分析.研究结果表明:铬渣和煤均能吸收微波能,且煤是很好的碳质还原剂;微波功率、辐照时间、配比的提高有助于转化率的提高;初始w(C)达20%后,反应速率基本不受含碳量的影响;煤渣质量的增加对转化率有一定影响,但不显著. 

Study on Impact Factors during Detoxicating Slag Containing Chromium by Microwave Radiation

The new method of detoxicating slag containing chromium by microwave radiation was basically studied. The experiments included those with the temperature of chromic slag and reducing agent-coal due to microwave radiation, the influence of operation conditions (such as microwave power, radiation time, compounding ratio, the quantity of coal and chromic slag( on the translation rate of Cr~(6+(. At the same time, the orthogonal test was applied to analyze the factors. The results of the above experiments show that chromic slag and coal can absorb microwave energy, and the coal is a good carbon reductant. The strong microwave energy, long radiation time and high quantity help to increase translation ratio. After carbonaceous quantity reaches 20%, the quantity does not basically influence reaction speed. Adding quantity of coal and chromic slag has some influence upon translation ratio, but the influence is not in evidence.