The New Disc Flow Membrane Concentrator Sorting Guangxi Phoenix Mine, Fine Mud Tin Tailings Pilot Study

China is one of the ancient civilized countries that produce and use tin firstly. At the beginning of 20th century, the introduction of western technology in China opened the prelude of the modern industry of tin. After the 1950s, tin industry developed rapidly, and China has gradually led the head in the production and consumption of tin in the world. As the basic materials of modern industry, the application range of tin is becoming wider and wider. However, with the exploitation for many years, the available tin resources are fewer and fewer, and the grade is lower as well. Therefore, it is significant to recover tin from tailings accumulated for many years.The manufacture of fine gravity separators has always been the focus of development of mineral processing equipments. The new disc flow film separator is a fine gravity separator which has the broadest application prospect. It has right structure, high efficiency, low energy consumption and it is easy to achieve large-scale through a large number of investigations and studies, summarizing and analyzing according to the problems at present. This paper mainly studied its index and stability by researching the fine tin tailings in Fenghuang mountain mine, Huaxi Group, in order to provide a scientific basis for the transformation.The grade of sample is 0.18%. Tin is mainly in the fraction range of 0.074-0.019mm by analyzing the run of mine, and its occupation ratio is 56.60%. This part can be recovered with a high efficiency by the new disc flow film separator. However, the metal occupation ratio of +0.10mm and -0.01mm fraction is higher,13.86% and 14.86% respectively and 28.72% totally. The recovery of the new disc flow film separator is lower in this part, which is a main factor affecting the recovery of tin concentrate of this experiment. Therefore, classification is proposed to be increased before the disc separator in the site.According to the feature of fine tin tailings, the rational technical parameters by experiments are determined as follows. The whirling vibration frequency of weights is 311 r/min. The rotating speed of separation disk is 4 min/r. The density of feed is 20%, and the weight of feed is 7 t/d. The grade of the rough tin concentrate is 1.34% and the recovery is 46.97% by separating once using the new disc flow film separator, which is hard for other similar fine gravity equipments at present.