| abstract |
The invention relates to a method for bleaching earth, comprising the following steps: drying raw clay containing a large amount of water to a low water content, mixing raw clay having a low water content with solid organic and / or concentrated inorganic acid, and grinding a mixture of raw clay, having a reduced water content, and solid organic and / or concentrated inorganic acid, in this case, the bleaching earth has a water content of from 20 to 40 wt.%. In addition, the invention includes the bleaching earth obtained by this method, and also relates to its use for bleaching raw vegetable or animal oils. |