In response to the scaling problem in the cavity of blast furnace tuyere of an iron and steel plant,the scale samples were subjected to X-ray diffraction(XRD)test-ing,which showed that the main components of the scale samples were CaSO4,CaSO4·2H2O,and CaSO4·0.5H2O.Through analyzing the quality of circulating cooling water in the blast furnace tuyere and the performance of the original scale inhibitor,corresponding im-provement measures were proposed,which is regulating the hardness of circulating cooling water below 400 mg/L and adding 6 mg/L EDTMPS in the original scale inhibitor,the for-mation of scale in the tuyere was effectively avoided,and the service life of the blast fur-nace tuyere was improved.
关键词
风口/水垢/阻垢剂/硬度/循环冷却水
Key words
tuyere/scale/scale inhibitor/hardness/circulating cooling water
维普
万方数据