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作者对吉林某含粘土硅藻土原矿．采用擦洗、磨矿和沉降分离，成功地制各出SiO2＞90％的硅藻土精土，且回收率达31％。
The author of a clay containing diatomite in Jilin ore. Using scrubbing, grinding and sedimentation separation, the successful production of SiO2> 90% diatomite soil, and the recovery rate of 31%.