Abstract: A new formulation of dispersant has been developed by or-thogonal test method in laboratory. The dispersant is used to granulate a certain colloid polymer and composed of 10% tech-nical soap, 60% kerosene and 30% tap water. At the same time, its validity, the influence on the polymer performance, e-conomic benefit and so on, are considered. The new dispersant has the same granulation performance, operation method and u-nit volume (weight) for granulation as the ordinary one, and under the same conditions, it shows much better characters of homogeneous granulation.

Key words: colloid polymer, granulation, dispersant, or-thogonal test, field application