Abstract: <SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>Through adding a new phosphate stabilizer</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times>，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>calcium peroxide was synthesized and studied in liquid phase at room temperature.Influences of the factors,such as mixture ratio of raw materials</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times>，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>temperature,and dosage of stabilizer on the yield and purity of calcium peroxide product,were discussed.By adopting two-stage drying with double-blade and tray driers,active oxygen loss of raw materials in wet state can be reduced,the mass fraction of calcium peroxide reached more than 60%,and the utilization rate of hydrogen peroxide was over 70%.Calcium peroxide produced by this method was applied in cyanide leaching of gold ore</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times>．</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>Experiment results showed that the leaching time and reagent consumption can be reduced and gold recovery can be improved obviously.Under the same conditions,calcium peroxide can save cyanide nearly 30%.</SPAN>