我矿第一选矿厂,在未成立全面质量管理小组(以下简称 QC 小组)的前几个月,选矿月回收率被动较大,在66.29—70.71%之间,并从1986年3月起,逐月下降。针对这一情况,选矿厂在矿选矿科的协助下于同年7月6日跨工段成立了一个选矿回收率 QC 小组。具体做法有两条。1.按质量管理的 PDCA 循环进行活动。QC小组每十天活动一次,按 PDCA 顺序进行工作。第一选矿厂根据实际情况采用 RX 图(单值移动极差 In the first few months of the establishment of the Total Quality Management Group (hereinafter referred to as the QC Group), the first ore dressing plant of I Mine, the recovery rate of the mineral processing month was relatively large with a passivity of 66.29-70.71%. From March 1986, Declining monthly. In response to this situation, the beneficiation plant, with the assistance of the Mineral Processing Division, set up a QC recovery and recovery unit on July 6 of the same year. There are two specific ways. 1. Conduct activities according to the PDCA cycle of quality management. The QC team is active every ten days and works in the PDCA sequence. The first beneficiation plant according to the actual situation using RX chart (single value moving very poor