苏云金芽胞杆菌8010粉剂对流干燥的研究

Studies on Countercurrent Drying for the Bacillus thuringirnsis 8010

利用对流干燥试验台，就苏云金芽胞杆菌８０１０粉剂（Ｂｔ８０１０）对流干燥进行了风温、风速和物料层厚度的正交试验．分析了上述三因素对干燥时间和干燥后芽胞数目的影响的显著水平．同时还得出干燥时间、芽胞剩余率的回归方程及降速干燥阶段曲线方程，提出了较佳的干燥工艺参数．

Orthogonal test including three factors (wind temperature,wind velocity and material thickness) were fulfilled with a countercurrent drier for drying the Bt 8010.Significance level was analysed according to the factors affecting drying time and spore numbers after drying,Regression equations were obtained which were relative to drying time,residal rate of spores and drying curve in the stage of descending speed for drying.Some rational parameters were put forward for optimizing drying technology.