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凤凰山铁矿床属于宁芜玢岩铁矿床第Ⅲ类型的中高温气液交代充填氧化铁矿矿床。1961～1979年有关单位对该矿矿石进行了可选性研究、工艺流程试验,有的进行了半工业和工业试验。试验流程达20余种,无论采用焙烧—磁选—反浮选,还是采用单一的重、磁、浮等工艺,其精矿品位只有45～56j6%,铁回收在64～88%之间,均未获得较为理想的技术指标。目前采用的振动槽—跳汰流程所获得的精矿质量不仅不能满足冶炼要求,而且资源的利用率不高。矿石性质是影响选矿技术经济指标的决
The Fenghuangshan iron ore deposit belongs to the Ⅲ type high-temperature gas-liquid iron oxide ore deposit of Ningwu Huangyan iron deposit. From 1961 to 1979, the relevant units carried out optional studies and technological process tests on the ores and carried out semi-industrial and industrial tests. The test procedure is more than 20 kinds. No matter using roasting, magnetic separation and reverse flotation, or using single heavy, magnetic and floatation processes, the concentrate grade is only 45-56%, iron recovery is 64-88% Did not get the ideal technical indicators. At present, the quality of concentrate obtained by the vibrating trough - jig flow not only can not meet the smelting requirements, but also the utilization rate of resources is not high. The nature of the ore is the economic indicators of mineral processing technology decision