关键词: 正交设计法;响应曲面法;反浮选;碳酸锰矿

Abstract: About refractory low-grade manganese carbonate ore for Yunnan, by elemental analysis, XRD characterization and manganese content phase analysis, the method of the reverse flotation of the ore dressing has been established.In order to achieve the optimization of flotation conditions, orthogonal test and the response surface method(RSM) were used to design the experiment simulated.The results showed that there is no significant difference with the model test results.Additionally, orthogonal test and the RSM were adopted for the optimization of Manganese carbonate reverse flotation with a high reliability and design reasonable.The optimized conditions was selected for the test of flotation.A better flotation index was obtained with 20.059% grade and 80.1648% recovery of Manganese ore concentrate, which was close to the predicting results of response surface methodology, accordingly, a reasonable results was achieved.The optimum conditions was 474.78 g/t of octadecylamine dosage, 131.33 g/t of starch dosage, pH=9 by optimizing sulfide flotation of Manganese ore concentrate by RSM.Based on above conditions, it is possible to obtain the 79.96% recovery and 20.07%grade of Manganese ore concentrate.flotation tests was employed to demonstrate the predicting results of RSM, and tests results matched well with the model prediction results.

Key words: orthogonal designing method;response surface methodology;reverse flotation;manganese carbonate