Abstract
The ore compositions in a certain newly proven tin polymetallic ore are complicated, closely mosaic between different minerals and fine-grained disseminated. The main compositions in the ore exist mostly in the form of sulfide, and are associated partly with oxidized ore. It is difficult to separate each metallic mineral to accept qualified concentrates and ensure higher recovery rates. Aiming at characteristics and occurrences of the ore, the project emphatically selects and contrasts the test flow of selective flotation, partial bulk flotation and flotation-and-gravity-concentration, and uses effective reagent system to control the impurity contents in every concentrate, and strengthen the recovery of associated silver at the same time of producing major metallic minerals. Metallic minerals, including copper, lead, zinc, tin, sulfur and silver, can be fully recovered by adopting combined procedure of selective flotation and gravity concentration, and other associated components in the ore are also recovered comprehensively, so the technology indexes of various products obtained are excellent.
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