Method for pelletizing weathered powdery sandstone
The invention discloses a method for pelletizing weathered powdery sandstone. The method comprises the following steps: (a) modifying collected powdery sandstone by using silica sol, and stirring to be uniform to obtain a mixture A; (b) doping a curing material and nutrients, and stirring to be unif...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a method for pelletizing weathered powdery sandstone. The method comprises the following steps: (a) modifying collected powdery sandstone by using silica sol, and stirring to be uniform to obtain a mixture A; (b) doping a curing material and nutrients, and stirring to be uniform; (c) maintaining, curing, and smashing by using a soil smasher to obtain primary sandstone particles so as to finish primary pelletizing; (d) treating the primary sandstone particles A by using silica sol, and stirring to be uniform to obtain a mixture B; (e) doping a curing material and nutrients, and stirring to be uniform; (f) maintaining, curing, and smashing by using the soil smasher to obtain secondary sandstone particles so as to finish secondary pelletizing. According to the method for pelletizing weathered powdery sandstone provided by the invention, aggregate is formed through two times of pelletizing, so that the cohesive action among the sandstone particles and the overall erosion resistance of the |
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