Study on the Preparation of Mineral Admixtures with Molybdenum Tailings

CUI Xiaowei; PANG Hua; DI Yanqing

doi:10.13779/j.cnki.issn1001-0076.2017.02.017

2017 Vol. 37, No. 2

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CUI Xiaowei, PANG Hua, DI Yanqing. Study on the Preparation of Mineral Admixtures with Molybdenum Tailings[J]. Conservation and Utilization of Mineral Resources, 2017, 37(2): 90-95. doi: 10.13779/j.cnki.issn1001-0076.2017.02.017

Citation:

CUI Xiaowei, PANG Hua, DI Yanqing. Study on the Preparation of Mineral Admixtures with Molybdenum Tailings[J]. Conservation and Utilization of Mineral Resources, 2017, 37(2): 90-95. doi: 10.13779/j.cnki.issn1001-0076.2017.02.017

Study on the Preparation of Mineral Admixtures with Molybdenum Tailings

Publish Date: 25 April 2017

Abstract

Abstract

Taking molybdenum tailings,slag,clinker and desulfurization gypsum as raw materials for cementitious materials,the ash reactivity of molybdenum tailings and the hydration reactivity of cementitious materials were studied.Meanwhile,the hydration products of cementitious materials were analyzed with chemical combined water and SEM.The results showed that,when mass ratio of molybdenum tailings in cementitious materials was 40%,the initial setting time and the final setting time were 195 min and 290 min respectively.The compressive strength of molybdenum tailings mortar at 28 d could reach 55.9 MPa.The hydration products of cementitious materials prepared with molybdenum tailings were mainly ettringite and C-S-H gel.And the intertwined ettringite and C-S-H gel improved the strength of concrete block.

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