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：在本文中，使用稻壳（RH）作为原料制备白炭黑，通过单因素试验，正交试验和响应表面分析研究了从RH中制备白炭黑的关键技术参数。同时，还分析了白炭黑的特征。通过正交实验分析，证实了影响白炭黑纯度的因素顺序是煅烧温度θ>碱处理时间？>最终pH？>表面活性剂。基于响应表面优化分析，用于制备白炭黑的最佳参数如下：煅烧温度610℃，碱处理时间为2.3Ω·HR，最终pH为10，CTMAB作为表面活性剂。在这种情况下，制备的二氧化硅的纯度可以达到99.39％，粒度是均匀的，球形和良好的分散，这使得GB / T 34698-2017标准的要求满足了标准的要求。
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