论文部分内容阅读
本工艺流程由矿石破碎、浓酸熟化-高铁淋滤浸出(NGJ)、三脂肪胺萃取、产品沉淀以及尾渣处置等部分组成,其中浓酸熟化、高铁淋滤、三脂肪胺萃取是本流程的基本工艺过程,全部工艺流出液闭路循环使用是本工艺的特点,而产品沉淀工艺则可根据具体产品类型选定。本流程与现行的常规流程相比,省去了磨矿和固液分离,简化了革取纯化和尾矿处置工序。流程的基本特色是粗颗粒矿石浸出、工艺流出液闭路循环、尾渣可直接用于采矿回填。台架试验、扩大(半工业)试验和工业试验均表明,全部工艺流出液闭路循环使用,对工艺操作和浸出率、再取率、沉淀率、产品质量等基本指标均无不利影响。证实了该流程实验室研究的各项技术指标可作为工业设计的依据。
The process consists of ore crushing, acidification - NGH, triamide extraction, product precipitation and tailings disposal and other components, of which concentrated acid maturation, high iron leaching, the three fatty amine extraction is the process Of the basic process, all of the process effluent closed loop use is the characteristics of the process, and product precipitation process can be selected according to the specific product type. This process eliminates the need for grinding and solid-liquid separation over current routine processes, simplifying the processes of extraction and tailings disposal. The basic features of the process are leaching of coarse-grained ores, closed-loop recycling of process effluents and tailings for direct mining backfill. The bench test, the expansion (semi-industrial) test and the industrial test all showed that all the process effluent was circulated closed-circuit and had no adverse effect on the basic indicators such as process operation, leaching rate, reacquisition rate, precipitation rate and product quality. Confirmed that the process of laboratory research of various technical indicators can be used as the basis for industrial design.