Effect of MgO Coating on the Hydration Resistance of MgO-CaO Clinkers

被引：16

作者：

Yin, Hongfeng ^{[1
]}

Ma, Yanlong ^{[1
]}

Yang, Jun ^{[1
]}

机构：

[1] Xian Univ Architecture & Technol, State Key Lab Western Architecture & Technol, Xian 710055, Peoples R China

来源：

ECO-MATERIALS PROCESSING AND DESIGN XII | 2011年 / 695卷

关键词：

MgO-CaO clinker; hydration resistance; MgO coating; carbothermal reduction; deposition mechanism;

D O I：

10.4028/www.scientific.net/MSF.695.324

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To overcome the disadvantage of MgO-CaO refractories, as the poor hydration resistance, MgO coating on the MgO-CaO clinker was fabricated by carbothermal reduction MgO with carbon as reduction agent and then the oxidation of Mg vapor. Effect of processing parameters (such as carbon source, reaction temperature and holding time) on the hydration resistance of MgO-CaO clinkers were investigated by hydration resistance test and SEM. The results indicated that the hydration resistance of treated MgO-CaO clinkers was improved when carbon black was used as reduction agent due to easy reaction with MgO than the graphite and coke. The high reaction temperature among 1450 similar to 1600 degrees C and prolonged holding time within 4 h resulted in improvement of the hydration resistance of treated MgO-CaO clinker. Deposition mechanism of MgO coating on the MgO-CaO clinker was discussed.

引用

页码：324 / +

页数：2

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