1983年初,我厂在硅酸盐自应力水泥配制工艺中改用粉料流量恒压控制配料新工艺(简称流量配料新工艺)。经一年来实用结果表明:不仅机械封闭性能好,克服了旧工艺存在的扬尘弊病,而且在配套φ1.2×4.2m磨机试产成功的基础上,通过开展QC活动和制订PDCA质量循环计划,配料质量不断提高,SO_3的合格率达60～70％,控制范围 At the beginning of 1983, our factory switched to the new process of powder flow constant pressure control and batching in the silicate self-stressing cement preparation process (referred to as the new flow rate batching process). After one year of practical results, it shows that not only the mechanical sealing performance is good, but also the dust in the old process is overcome, and on the basis of the success of the φ1.2×4.2m mill, the QC activity and PDCA quality cycle plan are developed. , The quality of ingredients continues to increase, SO_3 pass rate of 60 to 70%, control range