聚合温度和料浆pH对电镀级焦磷酸钾品质的影响研究  

The Research of the Effect about the Polymerization Temperature and pH Value of Neutralizing Slurry on the Quality of Electroplating Grade Potassium Pyrophosphate

作　　者：郑国伟[1] 屈云[1] 范佳利[1] 陈海山[1] 孙勋佳 

机构地区：[1]湖北兴发化工集团股份有限公司技术中心,功能性磷酸盐宜昌市重点实验室,湖北宜昌443000

出　　处：《广东化工》2016年第16期106-107,共2页Guangdong Chemical Industry

摘　　要：采用两步法工艺研究了聚合温度和料浆pH对电镀级焦磷酸钾品质的影响。研究表明：电镀级焦磷酸钾的聚合温度需控制在530℃以上;随着聚合温度的升高，产品络合指数逐步增大，在550-560℃范围，产品的络合指数达到最大值，之后随着温度的升高，产品的络合指数开始下降；聚合温度在550-560℃范围，产品的赫尔槽试验效果最佳；料浆pH为9．2时，所得焦磷酸钾含量最高；生产高含量（大于99％）焦磷酸钾需控制料浆pH在8．9-9．4。The effects of polymerization temperature and pH value of neutralizing slurry on the quality of Electroplating grade potassium pyrophosphate by two-step process. Researches showed that： polymerization temperature of Electroplating grade potassium pyrophosphate should be controlled at 530℃ or more; With the increase of polymerization temperature, complexing capability index of product gradually increased, it reached the maximum value in the range of 550-560℃, after that, it fell with the increase of temperature; When polymerization temperature was in the range of 550-560℃, the test result of the Hull Cell Test was best; When the pH value of neutralizing slurry was 9.2, the content of potassium pyrophosphate reached the maximum value; If the content of potassium pyrophosphate was more than 99 %, pH value of neutralizing slurry should be controlled in 8.9-9.4.

关 键 词：电镀级焦磷酸钾 品质 聚合温度 料浆pH 

分 类 号：TQ[化学工程]