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发明公开
CN103193241A 一种利用天然生物质原材料提高偏高岭土白度的方法 无效 - 驳回

一种利用天然生物质原材料提高偏高岭土白度的方法
摘要：
一种利用天然生物质原材料提高偏高岭土白度的方法，它包括以下步骤：（1）将高岭土粉末与天然生物质原材料粉末混合均匀，其中添加天然生物质原材料的量为高岭土原矿质量的（5-7）wt%；（2）将步骤（1）所得混合物在高温下煅烧2h以上，冷却后得到增白的偏高岭土。本发明以天然生物质原材料作为增白剂，在煅烧过程中生成产物为CO2和水，易于处理，对设备腐蚀性小，没有HCl，Cl2或NH3腐蚀性气体的生成，对环境无污染，操作安全，增白效果好。
摘要（英）：

The invention discloses a method for improving whiteness of metakaolin through utilizing a natural biomass raw material. The method comprises the following steps: (1) uniformly mixing kaolin powder with natural biomass raw material powder, wherein the mass of the natural biomass raw material accounts for (5-7)wt% of the mass of kaolin raw ore; and (2) calcinating a mixture obtained in step (1) at a high temperature for more than 2 hours, and cooling to obtain whitened metakaolin. According to the method, the natural biomass raw material is used as a whitening agent; products generated in a calcinating process are CO2 and water which are easy to treat and hardly corrode equipment; corrosive gases such as HCL, Cl2 and NH3 are not generated, and no pollution is caused to environment; and the method is safe to operate and has a good whitening effect.

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