Extraction of Phosphorous from Steelmaking Slag by Leaching

• 作 者: KimSun-Joong;GaoXu;UedaandShigeru;KitamuraShin-ya;
• 机 构: Institute of Multidisciplinary Research for Advanced Materials,Tohoku University,2-1-1 Katahira,Aoba
• 出 处: 第十届中国钢铁年会暨第六届宝钢学术年会
• 发表日期: 2015年期

　　In order to recyclephosphorusfrom steelmaking slag,a separation processby leaching has been proposed by current authors.The principle of this leaching process was to utilize the differencesin the water-solubility betweenthe C2S-C3 Psolid solution and the other phases.Experimentswere carried out to determinethe effect of pH on the dissolution behavior of various elements in the steelmaking slagwith and without free-CaO phase.When the pH was decreased,the dissolution behavior of Ca,Si,P and Fe from the steelmaking slag was increased.Furthermore,at a pH of 3,the dissolution ratio of P from steelmaking slag without the free-CaO was larger than that from steelmaking slag including free-CaO.