重介选煤工艺自动化系统在云鑫选煤厂的应用

Application of dense-medium separation automatic control system in Yunxin coal preparation plant

论述了重介选煤工艺自动化系统在贤成矿业集团曲靖云鑫选煤厂的应用,分析了影响重介工艺洗选指标的关键因素,介绍了生产过程中各工艺参数之间的相互关系,以及重介选煤工艺自动化系统对整个工艺生产的作用。针对云鑫选煤厂生产过程中出现的生产起始阶段密度不稳定、旋流器入口压力无法闭环调整等问题进行分析,通过在脱介筛上第一道喷水阀前加电动电磁阀,与原煤输送带秤测量以闭锁方式实现加水,对合格介质泵高压电机的控制改用高压变频器实现对旋流器入口压力的闭环调节,从根本上解决了上述问题,保障了生产系统的安全稳定运行,收到了良好效果。

Introduce the influencing factors of dense-medium separation, the relationship among each parameter during production and the effects of automatic system on dense-medium separation. To resolve the following problems in Yunxin coal preparation plant, such as unstable density in the initial stage of production, incapable closed-loop regulation of cyclone inlet pressure, reform the water spraying method on clean coal classifying screen, adopt high-voltage frequency inverter to control the cyclone inlet pressure. The transformation guarantees the stable operation of production.