| Since 1920's, the collectors ot fatty acia nave alreaay been applied to the industry of the flotation of phosphate ores and effectively behavior. In order to decrease the cost of reagents, people have been looking for the more effective, cheaper and easy acquiring phosphate ores collector. So a seires of constract tests have shown that TS has a little better effect on the behavior of collecting than other collectors, for example, oleate, sodium oleate etc.In the paper it has studied that the regulation of phosphate ores flotation with hydrochloric acid, sulfuric acid, phosphoric acid, sodium hydroxide, sodium carbonate, calgon, polyacrylamide, alizarin red indicator as depression and with TS as a collector. The test includes that the single TS is used for collector and that the mixed reagents are used for collectors.The results of flotation test of the pure mineral show that TS can collect cellophane and dolomite in natural PH and the floating power of dolomite is stronger than cellophane's. But using acid to adjust pulp's PH<6, cellophane and dolomite have good selective separation . Dolomite float and collophane sink , i.e. reverse flotation in acid pulp. The mixed reageats of TS and other reagents can improve separate effect of collophane and dolomite. These mixed reageats are TS and anionic surface-active agent SDSO3, TS and anodic surface-active agent dodec.ylamine and TS and non-ion surface-active agent alkylolamide, liquid petroleum oil . Their floating effects are better than single TS's. The results of determination of Zeta-potential, the spectrum of UV adsorption and FT-IR and of washing test show that TS and promoter absorb on the mineral surface in the formation of physisorption and chemisorption.The results obtained from natural phosphate ores flotation tests haveshown that flotation recovery has been improved, and the contents of P2O5 increasing and the contents of MgO decreasing in the concentrate, So TS has a very good industrial applied prospects.
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