The synthesis of water reducing agents from phenanthrene waste by sulfonation,condensation,neutralization and recondensation has been studied by the orthogonal test.

• 利用正交实验通过磺化、缩合、中和、再缩合反应对菲渣制取水泥减水剂进行了研究；优化了主要工艺条件；制备出的减水剂减水率可达17.；5%25。