沉降离心机分离沉淀硫酸钡试验研究

Study on Separation and Precipitation of Barium Sulfate By Horizontal Scroll-bowl Centrifuge

阐述了硫酸钡生产过程中固液分离工艺目前存在的现状,提出了用卧式沉降离心机来代替该行业常用的真空叶片机或厢式压滤机,并优化卧式沉降离心机的工艺参数是:转速3 000转/分、溢流直径138毫米、差转速30转/分,利用该设备能减少硫酸钡的损失,提高硫化钠的回收率。

The current status of solid-liquid separation in production process of barium sulfate was introduced. Horizontal scroll-bowl centrifuge was used to replace pressure filter or vacuum filter in the filtration and separation.The optimum technical parameters of the horizontal scroll-bowl centrifuge were determined through experiments： rotate speed was 3000 r/min,flow diameter was 138 mm and differential-rotational speed was 30 r/min.This centrifuge can reduce the loss of barium sulphate and enhance the recovery of sodium sulphide.