砂磨机制备铜基营养保护剂悬浮剂的工艺优化

为提高铜基营养保护剂悬浮剂的悬浮率和稳定性,通过正交实验和单因素实验方法,从浆料质量分数、研磨转速、研磨介质与浆料质量比及研磨时间4个因素出发,研究了通过砂磨机制备铜基营养保护剂悬浮剂的优化工艺。结果表明:研磨转速对制剂粒径影响最大;研磨介质与浆料质量比对制剂分散颗粒比表面积影响最大;浆料质量分数对粒径和比表面积的影响均最小。其最佳制备工艺条件为:浆料质量分数60%,研磨转速1 500 r/min,m(研磨介质):m(浆料)=1.5:1,研磨时间80 min。在此条件下,所得铜基营养保护剂悬浮剂的悬浮率均大于90%,且其分散性、水质适应性和水温实验均符合相关标准要求。研究结果可为铜基营养保护剂的开发应用提供理论基础及工艺参考。

Process optimization of copper-based nutritional protective suspension concentrate by bead mill

In order to increase the suspension rate and stability of copper-based nutritional protective suspension concentrate,the process optimization by bead mill was studied.Four factors (mass fraction of slurry,grinding speed,mass ratio of grinding media to slurry and grinding time) were investigated in the orthogonal and single-factor experiments.The results showed that grinding speed had significant effect on the particle size of preparation;mass ratio of grinding media to slurry had the most important influence on the specific surface area of preparation dispersed particles;however,mass fraction of slurry had no significant effect on the particle size and specific surface area.The optimum preparation conditions were as follows:mass fraction of slurry 60%,grinding speed 1 500 r/min,m(grinding media):m(slurry)=1.5:1,grinding time 80 min.The suspension rates were more than 90% under the optical conditions and the dispersing ability,water adaptability,water temperature test were all qualified to the relevant criterion.The results provided theoretical basis and process reference for the development and application of copper-based nutritional protective suspension concentrate.