介质制备工艺的研究

介绍了干式加介流程、新悬浮液-合格介质桶加介流程、新悬浮液-稀介质桶加介流程和加介磁选机加介流程4种常见的加介备介流程及各自的流程特点。对现有流程优化创新后,设计了浓缩旋流器加介流程和自动加介系统流程。最后对2种优化创新后流程的应用效果进行了分析。结果表明:浓缩旋流器加介流程简单可靠,实现了介质较高密度添加,且浓缩旋流器比磁选机投入成本低,占地面积小,无需其他动力设备,设备、能耗投资比磁选机加介流程节省约10万元。自动加介系统流程创新使用局部死循环,充分利用磁选尾矿水已有的势能,实现连续、自动、高密度加介,回收率高。日介耗为5 t的选煤厂,采用自动加介系统流程预计可将加介备介过程中产生的介耗降低50%,年介耗可降低120 t,年增加经济效益18万元,节省劳动力1人,经济效益可观。 Introduce four common medium dosing and preparation processes which are dry-type,fresh suspension-qualified medium bucket,fresh suspension-dilute medium bucket,medium-dosing magnetic separator medium-dosing process.After transformation,designed concentrate cyclone medium-dosing process and automatic medium-dosing process,then analysed the effect of those two processes.The results show that,without additional power equipments and floor space,the former process is much simpler and more reliable,into which the high density medium can be added,the total investment including equipments and energy consumption of the former process is less 105 yuan than that of magnetic separator medium-dosing process.The automatic medium-dosing process adopts partial drop-dead halt,makes full use of the current potential energy,the high density medium can be added continuously and automaticmatically.Its recovery is much higher.Taking one coal preparation plant as sample,whose medium consumption once was five tons one day,adopting the automatic medium-dosing process,it decrease by 50 percent in the course of preparing,in other words,120 tons one year,economic benefits increases by 1.8×105 yuan,saves one laborer