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大峪口矿肥结合工程是我国“八五”重点建设项目之一．我院经过十几年的开发研究，先后完成了实验室试验、1.5t／d连续试验、50t／d半工业性试验、捕收剂代用试验和150万t/a选矿厂工业调试，取得了磷精矿含P2O533.47％～34．63％，回收率77％～78％的选矿指标。我院研制的新型捕收剂pA－42和碳酸盐脉石矿物有效抑制剂S711，在大峪口磷块岩选矿中都有良好表现。
Dayukou fertilizer combination project is China’s “Eighth Five-Year” one of the key construction projects. After more than 10 years of research and development in our hospital, we have successively completed laboratory tests, 1.5t / d continuous test, 50t / d semi-industrial test, collector test and 1.5mt / a ore dressing plant industrial commissioning Phosphate concentrate containing P2O533.47% ~ 34.63%, the recovery rate of 77% to 78% of the beneficiation indicators. Our hospital developed a new collector pA-42 and effective carbonate ganglite inhibitor S711, in the Dayukou phosphorite beneficiation has a good performance.