研究了由HeculesChemicalsSingaporePte .Ltd .提供的四种化学添加剂在桉木和相思木硫酸盐制浆及漂白中对脱除抽提物的影响。使用化学添加剂可使抽提物脱除更多 ,桉木蒸煮在低筛渣率情况下具有更好的蒸煮均一性、更低的残碱及改善浆的白度。在化学添加剂较低用量下 ,卡伯值降低但浆得率并无明显降低 The effect of four chemical additives provided by Hecules Chemicals Singapore Pte. Ltd. on removal of extractives from pulping and bleaching of eucalyptus and acacia sulfates was investigated. Extracts can be removed more using chemical additives, eucalyptus cooking has better cooking uniformity at lower reject rates, lower residual alkali and improved whiteness of the pulp. In the lower dosage of chemical additives, the kappa number decreased but the pulp yield did not decrease significantly