关键词: 石英砂, 智能分选机, 强磁选, Fe₂O₃含量, 除杂

Abstract: A quartz sand ore from Malaysia has SiO₂ content of 79.45%，Fe₂O₃ content of 1.48%， TiO₂ content of 1.04%，which belongs to a common quartz sand raw material. In order to obtain super stan⁃ dard quartz sand products with high efficiency，low cost and no pollution，purification research with new process was carried out. The results showed that the super standard quartz sand products with Fe₂O₃ content of 0.007 8% and SiO₂ content of 99.90% can be obtained after treated by crushing，washing，intelligent separation and waste disposal，grinding，one roughing and one cleaning in high-intensity magnetic separa⁃ tion process for the ores. The new process has the characteristics of simple process，conventional equip⁃ ment，low cost and no pollution，which has popularization and application value.

Key words: quartz sand, Intelligent sorting machine, high-intensity magnetic separation, Fe₂O₃ con? tent, impurities removal