铁尾矿贝利特硫铝酸盐水泥的制备及性能研究

金属矿山 ›› 2013, Vol. 42 ›› Issue (08): 157-160.

铁尾矿贝利特硫铝酸盐水泥的制备及性能研究

郑永超^1,2，刘艳军^1,2，李德忠³，李青^1,2

1.固废资源化利用与节能建材国家重点实验室；2.北京建筑材料科学研究总院有限公司；3.北京科技大学土木与环境工程学院

出版日期:2013-08-15 发布日期:2013-09-27
基金资助:
* 国家高技术研究发展计划（863计划）项目（编号：2012AA062405）。

Preparation of Belite-sulphoaluminate Cement with Iron Tailings and its Properties

Zheng Yongchao^1,2，Liu Yanjun^1,2，Li Dezhong³，Li Qing^1,2

1.State Key Laboratory of Solid Waste Reuse for Building Materials；2.Beijing Building Materials Academy of Sciences Research；3.School of Civil and Environmental Engineering，University of Science and Technology Bejing

Online:2013-08-15 Published:2013-09-27

摘要/Abstract

摘要： 以首云矿业股份有限公司铁尾矿、低品位矾土等为原料制备铁尾矿贝利特硫铝酸盐水泥，为铁尾矿的高附加值利用探索新的途径。研究结果表明：在生料中铁尾矿、矾土、煅烧石灰石、Al₂O₃、CaSO₄·2H₂O的配比为10∶17∶48∶15∶10，煅烧温度为1 350 ℃，煅烧时间为20 min条件下，可制备出矿物成分以C₄A₃S、C₂S、C₄AF为主，f-CaO含量小于1.5%的铁尾矿贝利特硫铝酸盐水泥熟料。向该熟料中配入与其质量比均为8%的天然石膏和石灰石制成水泥，再按胶砂比为1∶3、水胶比为0.6制成水泥胶砂，胶砂的3 d抗压强度达38.1 MPa、28 d抗压强度达52.5 MPa。

关键词: 铁尾矿贝利特硫铝酸盐水泥, 水泥熟料矿物成分, 水泥胶砂抗压强度

Abstract: With iron tailings and low grade bauxite from Shouyun Mining Company as raw materials，the belite-sulphoaluminate cement clinker was prepared，which proposes a new way for exploring the high added value of iron tailings. The results showed that with the ratio of iron tailings，bauxite，calcined limestone，Al₂O₃，CaSO₄·2H₂O of 10∶17∶48∶15∶10 in the raw meal，and at the calcination temperature of 1 350 ℃ for 20 min，belite-sulphoaluminate cement clinker with major components of C₄A₃S，C₂S，C₄AF and f-CaO content of less than 1.5% was prepared. Then，natural gypsum and limestone were added into the clinker with the quality ratio of 8% to prepare the cement raw meal. With the cement-sand ratio of 1∶3，and water-cement ratio of 0.6，the cement-mortar product reached the compressive strength of 38.1 MPa，at 3 d，and 52.5 MPa at 28 d.

Key words: Belite-sulphoaluminate cement of iron tailings, Mineral components of cement clinker, Cement-mortar compressive strength

郑永超, 刘艳军, 李德忠, 李青. 铁尾矿贝利特硫铝酸盐水泥的制备及性能研究[J]. 金属矿山, 2013, 42(08): 157-160.

ZHENG Yong-Chao, LIU Yan-Jun, LI De-Zhong, LI Qing. Preparation of Belite-sulphoaluminate Cement with Iron Tailings and its Properties[J]. Metal Mine, 2013, 42(08): 157-160.

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