]*>","")" /> Study on Hard-Dressing SiO2 in Coal and Approach of Its Utilization
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Study on Hard-Dressing SiO2 in Coal and Approach of Its Utilization

ZHANG Hui, ZHANG Ke-xuan, XIAO Wen-zhao   

  1. Xi’an Branch,China Coal Research Academy, Shanxi 710054
  • Received:2000-06-20 Revised:2000-06-20 Online:2000-06-20 Published:2000-06-20