Beneficiation test of yellow mining area in fujian city of jianyang province pol
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Galena, sphalerite is relatively simple and independent mineral cloth grain sorting and larger to block other minerals, but the ore contains total junction edge structure, opaque structure, etching -- skeleton crystal structure and complex shape, fleck, dip taxitic, dip strip and miscellaneous Net - veined in order to improve the technical index of selected vein structure brings some difficulties. The structure, galena and sphalerite overall dissemination characteristics and mosaic relation is conducive to sorting, and above the galena floatability good natural sphalerite flotation easier, these are favorable conditions for optimization of flotation.
Because a chalcopyrite xenomorphic granular, particle size distribution between 0.001~0.5mm and common a milky appearance produced in other metal sulfide minerals, so to copper recovery difficult. Intended for testing programme to be timed, temporary not consider.
By the test of grinding fineness: lead, zinc, lead zinc separation; selected conditions and closed circuit experiment, considering the recovery of valuable elements associated with. In the process of test of important process parameters and the optimum conditions were added to test and repeated tests necessary, to ensure the reliability, reproducibility of test results. Test method for the separation process of copper minerals by flotation, flotation of lead minerals, finally, zinc sulphur separation. The crude ore and then a three selection, using a zinc roughing onescavenging four finishing process. Through the closed circuit test, copper concentrate containing Cu10.01%, Au80.36g/t, Ag1434.4g/t. The recovery rate: Cu33.36%, Au25.64%, Ag12.75%; lead concentrate: Pb 41.74%, Au; 16.6g/t, Ag759.0g/t. The recovery rate: Pb75.20%, Au42.38%, Ag; 53.98%; zinc containing 40.62% zinc concentrate, the recovery rate was 73.83%.
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