老挝固体钾盐矿选矿设计的优化与创新——以开元500 kt/a氯化钾项目为例

选矿厂设计是矿山建设中极其重要的关键环节。做好选矿厂设计工作,对于节省项目建设投资,确保工厂如期达产达标,取得良好的经济效益,具有决定性的作用。结合老挝开元500 kt/a氯化钾项目选矿厂生产过程中的技术改造与创新,对该类型选矿厂设计进行经验总结,并指明设计中仍需优化与创新的环节。选矿厂设计中工艺流程的选择应具有较强的生产兼容性,且工艺流程主要环节之间有灵活的可切换性,以适应井下开采过程中性质多变的原矿。工艺配置,设备选型和厂房设计既要兼顾原矿和产品性质,也要充分考虑当地的气候条件和自然环境。厂房和工艺设备的防腐,自动化技术的开发应用和工艺流程样品的自动采集与分析是未来仍需优化和创新的重要环节。该项研究可为今后同类选矿厂的设计提供有益的参考。

The Optimization and Innovation on Design of KCl Concentration Plant in Laos: A Case Study from the 500 kt/a KCl Production Project in Laos Kaiyuan Mining Company

The design of concentration plant is of great significance for mine construction.An excellent design plays a crucial role in saving investment of the project,achieving production targets and making economic benefits.Combined with the technological improvements and innovations in the production process.This paper summarized experiences from the design of concentration plant of the 500 kt/a KCl production project in Lao Kaiyuan Mining Company and pointed out some important links needed to be optimized.The appropriate process flow should adapt to varied ore types(carnallite and sylvite)and main links of the flow can shift in order to fulfill the compatibility of the flow.Process configuration,equipment selection and plant layout must take into account the characteristics of the raw ore and product,as well as the local climatic conditions and natural environments.The anti-corrosion of equipment,the development and application of automation technology and the automatic collection and analysis of samples should be emphasized in the future.This work will be beneficial to the design of similar concentration plants.