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王集选厂是我国建成的第一个大型胶磷矿选厂,根据近年一、三层矿分选所出现的问题,我矿提出混选的工艺方案,且在试生产中获得较好结果。 一、分选工艺的由来 王集磷矿为震旦系海相沉积型磷矿床,有工业价值的主要是一、三层矿。一层矿实际出矿品位P_2O_524.47％,可以直接制肥或制黄磷,而三层矿品位只有13.5％,经选矿才能加以利用。60年代化工矿山设计研究院开始三层矿的选矿研究,70年代化工部决定首先在王集建设选矿厂。为确保精矿供应山西化肥厂,要求一、三层矿全部入选。这时三层矿已作宁大量研究,扩试指标亦达部要求,而一层矿仅作了些探索试验,也未鉴定。为了建厂需要,设计时一层矿套用了三层矿的选矿工艺。这样,就形成了一、三层矿分别破碎、磨矿、浮选、精矿粉在精矿仓用抓斗混合的方案。
Wangji Election Plant is the first large-scale phosphate rock phosphate dressing plant built in China. According to the problems of the first and third layer ore sorting in recent years, the mine proposed a mixed-selection process scheme and achieved good results in trial production. First, the origin of the separation process Wangji phosphate rock for the Sinian marine sedimentary phosphate deposits, the main industrial value is one or three mines. The first ore layer of ore P_2O_524.47%, can be directly made fertilizer or yellow phosphorus, and only three layers of ore 13.5%, by the mineral separation can be used. In the 1960s, the Chemical and Mining Design and Research Institute began to study the dressing of the three layers of ore. In the 1970s, the Ministry of Chemical Industry decided to construct the dressing plant in Wangji first. In order to ensure the supply of concentrate to Shanxi Fertilizer Plant, it is required that all the first and third mines should be selected. At this time, three layers of ore have been used for a large number of studies, and the extension test target has also reached the requirements of the Ministry. However, the first layer of ore has only made some exploratory tests and has not been identified. In order to build the plant needs, design a layer of mine cover with three ore beneficiation process. In this way, the formation of a mine, respectively, three broken, grinding, flotation, concentrate powder in the concentrate bin grab mixing program.