RK-P582 silicone defoamer emulsion is an emulsion type polyether modified silicone defoamer, which has excellent resistance to strong alkali&acid, temperature and shearing. It has good stability in pulping black liquor system and no gel formation. Good foam control performance can be achieved by small addition. It is widely used in the control of foam generation in pulping black liquor system, as well as in industrial cleaning, sewage treatment and other industries.