In this paper, rice husk (RH) was used as raw material to prepare white carbon black, and the key technological parameters of preparing white carbon black from RH were studied through single‐factor test, orthogonal experiment, and response surface analysis. Meanwhile, the characteristic of white carbon black was also analyzed. Through orthogonal experiment analysis, it was confirmed that the order of factors affecting the purity of white carbon black was calcination temperature > alkali treatment time > final pH > surfactant. Based on the response surface optimization analysis, the optimum parameters for preparation of white carbon black were as follows: calcination temperature 610°C, alkali treatment time of 2.3 hr, final pH of 10, CTMAB was used as the surfactant. Under this condition, the purity of silica prepared could be reached to 99.39%, and the particle size was uniform, spherical, and well dispersed, which satisfied the requirements of GB/T 34698‐2017 standard.
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机译：本文以稻壳（RH）为原料制备白炭黑，并通过单因素试验，正交试验，响应面分析等方法研究了由RH制备白炭黑的关键工艺参数。同时，还分析了白炭黑的特性。通过正交实验分析，证实影响白炭黑纯度的因素依次为煅烧温度>碱处理时间>最终pH>表面活性剂。根据响应面优化分析，制备白炭黑的最佳参数如下：煅烧温度610°C，碱处理时间2.3小时，最终pH值为10，CTMAB被用作表面活性剂。在此条件下，制得的二氧化硅纯度可达99.39％，粒径均匀，球形，分散性好，符合GB / T 34698-2017标准的要求。
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