残留马铃薯淀粉作为直接阴离子浮选磷矿石的抑制剂的性能

Amanda Aparecida Carneiro, Adriele Mércia Alves Santos, João Victor da Silva Alves, Michelly dos Santos Oliveira, Mário Guimarães Junior
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引用次数: 0

摘要

近年来,采矿业对高效率、高选择性和低成本的环保型试剂的需求不断增加。使用可再生替代来源的抑制剂是一个值得考虑的选择。因此,本研究的目的是通过比较食品工业产生的残余马铃薯淀粉浆(RPSP)与富含直链淀粉的商业蜡质玉米淀粉(CWCS)的性能,评估在磷矿浮选中使用残余马铃薯淀粉浆作为抑制剂的情况。为此,我们使用丹佛机械池进行了八次浮选试验,每次试验重复进行。结果表明,捕收剂用量和淀粉类型参数对浮选的影响很大。捕收剂用量从 150 克/吨增加到 350 克/吨,使使用 500 克/吨 RPSP 淀粉的冶金回收率提高了约 18%(从 73.09% 提高到 86.16%)。响应优化统计工具显示,要使 P2O5 含量和冶金回收率最大化,RPSP 和捕收剂用量应分别为 500 克/吨和 226.77 克/吨。这些结果表明,在磷矿浮选中使用 RPSP 是可行的,这为使用更易获得、更经济的抑制剂开辟了新的研究领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance of residual potato starch as depressant in the direct anionic flotation of phosphate ore
The search for environmentally friendly reagents with high efficiency, high selectivity, and low cost has intensified in the mining sector in recent years. The use of depressants from alternative and renewable sources is an option to be considered. Thus, the purpose of this study was to evaluate the use of residual potato starch pulp (RPSP) generated by the food industry as a depressant in phosphate ore flotation by comparing its performance with that of commercial, waxy corn starch (CWCS), rich in amylopectin. To this end, eight flotation tests were performed in duplicate using the Denver mechanical cell. The results showed significant variations for flotation in the collector dosage and starch-type parameters. The increase from 150 to 350 g/t in the collector dosage promoted an approximately 18% increase in metallurgical recovery using 500 g/t of RPSP starch (an increase from 73.09% to 86.16%). The response optimization statistical tool showed that RPSP and collector dosages should be 500 and 226.77 g/t, respectively, to maximize the P2O5 content and metallurgical recovery. These results suggest that it is feasible to use RPSP in phosphate ore flotation, opening new fields of investigation regarding the use of more accessible and economical depressants.
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