Abstract: Flotation Process on silica sand wtfhout using fluoride was studied and summarized in this paper.Some, practicable flowsheets were suggested.It Was stressed that fresh surface of minerals, reasonable value of pH and suitable time of conditioning pulp were all very important. It was considered that using some amine salt (e.g. R-o-(CH₂)₃-NH₂) as collector either alone or mixed with sodium petroleum sulfonate would result in obviously separating feldspar from guartz. The reason for it might be related to the characters of cationic activation group of the collector.