基于正交多项式回归分析的超细石膏粉体制备效果的研究  

Study on the Preparation Effect of Ultrafine Gypsum Powder Based on Orthogonal Polynomial Regression Analysis

作　　者：张艺瑶 王宇斌[1] 彭祥玉 马晓晓 雷大士 ZHANG Yi-yao;WANG Yu-bin;PENG Xiang-yu;MA Xiao-xiao;LEI Da-shi(School of Resource Engineering(Xi'an University of Architecture and Technology),Xi'an 710055,China;Yulin Yushen Coal Yushuwan Coal Mine Co.,LTD.,Yulin 719000,China)

机构地区：[1]西安建筑科技大学(资源工程学院),陕西西安710055 [2]榆林市榆神煤炭榆树湾煤矿有限公司,陕西榆林719000

出　　处：《中国非金属矿工业导刊》2025年第1期69-73,共5页China Non-Metallic Minerals industry

基　　金：陕西省自然科学基金“氟基助浸剂强化蛇纹石中镁离子浸出的表界面硅氧结构调控机制”(编号:2024JC-YBQN-0389)。

摘　　要：为显著提升超细石膏粉体制备效果,研究对助磨剂进行电化学预处理,基于正交试验的方法,确定了最佳电化学预处理条件,并建立正交多项式回归预测模型进行预测。结果表明,正交多项式回归分析得出的影响助磨效果制备超细石膏粉体的特征重要性排序为:极板间距、电流密度和电解时间。最优电化学预处理助磨剂制备超细石膏粉体的条件:电流密度为5.7×10^(-7)A/m^(2)、极板间距为4cm及电解时间为15min。正交多项式回归模型的预测值与试验值的误差在±2.22%之间。原因在于,电化学预处理可显著降低EDTA溶液的黏度,提高EDTA溶液中悬浮颗粒的分散性,同时能够打破EDTA溶液的电离平衡,增大EDTA溶液的解离常数。研究对电化学预处理提高EDTA对生石膏的超细磨有一定的参考实际意义。In order to significantly improve the preparation effect of ultrafine gypsum powder,electrochemical pretreatment of grinding aid was studied.Based on the method of orthogonal test,the optimal electrochemical pretreatment conditions were determined,and the orthogonal polynomial regression prediction model was established for prediction.The results show that the orthogonal polynomial regression analysis shows that the characteristics of the ultrafine gypsum powder are as follows:plate spacing,current density and electrolysis time.The optimum conditions for preparing ultrafine gypsum powder by electrochemical pretreatment aid are as follows:current density is 5.7×10^(-7)A/m^(2),plate spacing is 4cm and electrolysis time is 15min.The error between the predicted value and the experimental value of the orthogonal polynomial regression model is±2.22%.The reason is that electrochemical pretreatment can significantly reduce the viscosity of EDTA solution,improve the dispersion of suspended particles in EDTA solution,break the ionization equilibrium of EDTA solution,and increase the dissociation constant of EDTA solution.The research has some practical significance for improving EDTA for ultrafine grinding of gypsum by electrochemical pretreatment.

关 键 词：生石膏 超细磨 正交多项式 回归分析 粒度预测 

分 类 号：TQ132.32[化学工程—无机化工]