The Study Of The Processing Technology From Micro-granule Skarn Iron-tin Ore Of Dading Moutain Of Sichuan Privence

Tin is one of the first application metals in human history. As more and more extensive use of tin, in hare demand for tin resources becomes increasing in the world. With the dwindling of easy selection tin mining, People pay more attention on developing and utilizing tin mine which are difficult to select.There are a large number of tin-containing iron ore, or contact metasomatic iron series of tin in our country, Therefore, it is significant to develop the comprehensive tin mine for the development of national.In this paper, the micro-granule skarn Iron-tin ore which is studied come from Dading Mountain in Mianning County of SiChun Province.And this is a kind of typical skarn Iron-Tin Ore.Here it starts with the research of technics mineralogy.The research showed that iron ore exist as limonite and magnetite and tin ore exist as cassiterite mainly. The embedded fabric size of cassiterite is fine,it is not easy to break with gangue minerals.According to the research of technics mineralogy,the research was done on the trunk flow of"stage grinding - Magnetic - classification shaker selection"and"centrifuge enrichment - Shaker Select"for -0.037mm fine grade of the trunk flow. As the ore contained 0.64% Sn,13.76 %Fe,then the tin concentrate which contained 41.08% Sn was received, and the recovery of Sn was 56.96%; the iron concentrate which contained 58.20% Fe was received, and the recovery of Fe was 11.41%.Research was done on"centrifuge enrichment - Shaker Select"for fine grade of the trunk flow to improve the recovery of tin concentrate widely. The tin concentrate which contained 38.50% Sn was received according to enrich by centrifuge and select by shaker, and the recovery of the Sn was 39.01%. By the trunk flow of"stage grinding - Magnetic - classification shaker selection"and the flow of"centrifuge enrichment - Shaker Select", tin concentrate which contained 40.63% and 68.37% of recovery and iron concentrate which contained 57.92% and 10.18% of recovery were received by extended experiment at last.Therefore, ideal indicator can be received by the trunk flow of"stage grinding - Magnetic - classification shaker selection"and the flow of"centrifuge enrichment - Shaker Select".And it can be the reference and guide of the similar nature ore.