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针对中国铝业河南分公司氧化铝厂生产中拜耳法赤泥的特性,从絮凝剂的原料配比(即水解度)、分子量等多方面考虑,北京希涛公司研制了329NP型聚丙烯酰胺系列絮凝剂,实验证明,该絮凝剂用量大幅减少,而且可以加快赤泥沉降速度,优化压缩性能及减少溢流中的浮游物等各项技术指标,维持沉降槽的稳定运行,确保了拜耳法沉降槽在高产下的通过能力,尤其在槽子跑浑干加时,329NP的优势更加明显。
According to the characteristics of Bayer process red mud produced by China Aluminum Henan Branch Alumina Plant, from the aspect of raw material ratio of flocculant (ie degree of hydrolysis) and molecular weight, Beijing Xitao Company has developed 329NP polyacrylamide series Flocculant, experiments show that the amount of the flocculant significantly reduced, and can speed up the sedimentation rate of red mud, the optimization of compression properties and reduce flooding in the floats and other technical indicators to maintain the stability of the settling tank operation to ensure the Bayer settlement The superiority of the 329NP is even more noticeable when the trough passes at high yield, especially when the trough runs dry.