Abstract: In order to solve the pollution of ammonia nitrogen wastewater stemmed from ionic type rare-earth ore leaching using ammonium sulfate solution as the reagents，research on ore leaching with no ammonia is carried out with an ionic type rare-earth ore，Jiangxi，as the research object.Ore leaching efficiency of potassium sulfate，sodium sulfate，magnesium sulfate，sodium thiosulfate，sodium nitrate，sodium nitrite，magnesium chloride and A1，A2，A3，A4，A5，and ammonium sulfate are compared in exploring experiment.The results show that A2 ~ A5 can have nearly the same leaching efficiency as ammonium sulfate，and the other 8 kinds of leaching reagents has lower leaching rate.Extending leaching experiments are carried out using A2~A5 and ammonium sulfate as the leaching reagent，based on the exploring tests.The results indicated that，all of A2，A3 and A5 have nearly the same leaching rate as ammonium sulfate (95.25%，95.25%，95.01% and 95.05% respectively)，while leaching period of A3 and A5 (92，127 h respectively) are longer than that of ammonium sulfate (58 h) by 58.62% and by 118.97% respectively，while the leaching period of A2 (48 h) is shorter by 17.24%.Further chemical element analysis on leaching solution from extending test of A2 and ammonium sulfate as leaching reagent is conducted，finding that concentration of REO and impurities Fe，Al，Si，Ca is almost the same.In a word，A2 can not only replace ammonium sulfate to accomplish ore leaching of ionic type rare-earth without ammonia，but also greatly shorten the leaching period.

Key words: Ionic rare-earth ore, Ammonia nitrogen wastewater, Ore leaching with no ammonia