Study on dressing experiments of one low-grade tungsten and tin ore in Yunnan

Experiments were carried out on one wolfram and tin ore which obtains tin (0.140%),silica (63.13%),aluminum oxide (17.44%),calcium oxide (2.92%),magnesium oxide (2.44%) in Yunnan.Based on the study on ore mineralogy and experimental study,the ore was milled to -0.5mm,the process was as follows:firstly hydraulic separation was taken according to different type of beds,then desulfidation and deironing were carried out,after that separation of wolfram and tin was carried out by flotation at ordinary temperature.Productivities of concentrates of wolfram and tin are 0.31% with wolfram (71.06%),tin (0.56%) and 0.12% with tin (58.18%),wolfram (3.80%) respectively.The recoveries of wolfram and tin are 67.69% and 50.94% in concentrates.Meanwhile productivity of middling of tin is 0.21 with tin (4.22%),wolfram (2.69%).The recovery of tin is 6.87% in middling.Comprehensive recovery of tin is 57.81%.