The method is composed of a lime slaking process which slakes continuously quicklime containing less calcium carbonate than a specific amount with a white liquid and/or a green liquor under specific lime concentration utilizing a causticizing process in a pulp making process by a sulfate method or a soda method. 硫酸塩法又はソーダ法によるパルプ製造工程の苛性化工程を利用して、特定量以下の炭酸カルシウムを含有する生石灰を、特定の石灰濃度で白液及び/又は緑液で連続的に消和反応させる消和工程を含む。 - 特許庁