Sodium lignosulphonate  is a kind of natural anionic surfactant of high molecular polymer, which is rich in sulfo group and carboxyl and has better water-solubility, surfactivity and dispersion force, made by a process of filtration, inspissation, chemical modification and spray drying with woord as raw material. Sodium lignosulphonate is widely used in various concrete projects, such as the prilling of concrete admixture, intensifer, suspending agent, dispersant, bulking agent, stabilizing agent, breeze, fertilizer, feedstuff, and foundry of sand mould, etc. 

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