利用造纸废液制取木质素磺酸盐减水剂  

MAKING THE LIGNOSULFONATES WATER-REDUCER FROM THE PULPING WASTE WATER

作　　者：李成海[1] 丁瑄才 李俊杰[1] 龚福忠[1] 

机构地区：[1]广西大学化学系,530004

出　　处：《水处理技术》1991年第5期338-342,共5页Technology of Water Treatment

摘　　要：本文通过实验,将碱法造纸黑液中的木质素分离回收,制成木质素磺酸钠为主要成分的MZ 型减水剂,该减水剂具有缓凝、减水,早强性质,提高混凝土抗压强度。在水灰比相同、坍落度相同或相近的情况下,掺该减水剂占水泥量的1%,则水泥减少7—10%,减少率7—10%,混凝土的3天强度平均提高30.1%,7天强度平均提高24.1%,28天强度平均提高8.7%。变废为利。This paper dealt with an experiment in which lignin was extracted from the alkali sulfate pulp waste water and turned into the MZ type con- crete water-reducer.It was characterized by its water-reducing acceleration and set-retarding function,thus in turn,strengthening the compressive ability of the concrete. Under the same conditions of slump and water-cement ratio,the water- reducing agent,although being only 1 per cent of the cement's weight,could save concrete by 7—10%.In the average,The compressive strength of the concrete increased by 30.1% on the 3rd day and 24.1% on the 7th day and 8.7% on the 28th day.

关 键 词：造纸黑液 减水剂 木质素磺酸盐 

分 类 号：TU528.042[建筑科学—建筑技术科学]