Study on the properties of magnesium oxychloride cement prepared by the magnesium-rich byproducts from the production of lithium carbonate from salt lakes

被引：3

作者：

Miao, Meng ^{[1
]}

Wu, Chengyou ^{[1
,3
]}

Zhang, Huifang ^{[2
]}

机构：

[1] Qinghai Univ, Sch Civil Engn, Xining 810016, Peoples R China

[2] Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China

[3] Qinghai Prov Key Lab Energy Saving Bldg Mat & Eng, Xining 810016, Peoples R China

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2021年 / 129卷 / 08期

关键词：

Magnesium residue; Calcination temperature; Compressive strength; Magnesium oxychloride cement; Water resistance; OXYSULFATE CEMENT; PERFORMANCE; EXTRACTION; REACTIVITY; MECHANISM;

D O I：

10.2109/jcersj2.20242

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnesium oxychloride cement (MOC) cement was prepared using magnesia derived from the calcination at 400-900 degrees C of magnesium-residue from the production of LiCO3 from salt take brine. The setting time, compressive strength, hydration course and pore distribution of MOC cement were measured, and the effects of additives and mineral admixtures on their mechanical properties and water resistance were studied. It was found that lower calcination temperature and high molar ratio of a-MgO/MgCl2 are more conducive to the setting and hardening and mechanical properties of MOC cement. However, adding KH2PO4 and mineral admixtures to MOC cement can only improve its short-term (3 days) water resistance, and cannot completely solve the problem of poor water resistance of MOC. (C) 2021 The Ceramic Society of Japan. All rights reserved.

引用

页码：516 / 527

页数：12

共 27 条

[1] Microstructures of magnesium oxychloride [J].

Chau, C. K. ;

Li, Zongjin .

MATERIALS AND STRUCTURES, 2008, 41 (05) :853-862

[2] Influences of fly ash on magnesium oxychloride mortar [J].

Chau, C. K. ;

Chan, James ;

Li, Zongjin .

CEMENT & CONCRETE COMPOSITES, 2009, 31 (04) :250-254

[3] Effect of Calcined MgO-rich Byproduct from the Extraction of Li2CO3 on the Performance of Magnesium Phosphate Cement [J].

Chen, Wenhai ;

Wu, Chengyou ;

Yu, Hongfa ;

Chen, Yuanji ;

Zheng, Shuhai .

JOURNAL OF ADVANCED CONCRETE TECHNOLOGY, 2017, 15 (12) :749-759

[4]

Cheng L., 2015, INORGANIC CHEM IND, V47, P73

[5] STUDIES ON MAGNESIUM AND CALCIUM OXYCHLORIDES [J].

DEMEDIUK, T ;

COLE, WF ;

HUEBER, HV .

AUSTRALIAN JOURNAL OF CHEMISTRY, 1955, 8 (02) :215-233

[6] The mechanism for soluble phosphates to improve the water resistance of magnesium oxychloride cement [J].

Deng, DH .

CEMENT AND CONCRETE RESEARCH, 2003, 33 (09) :1311-1317

[7]

[丁建华 Ding Jianhua], 2013, [中国地质, Geology of China], V40, P1699

[8] 9Mg(OH)2•MgCl2•4H2O, a High Temperature Phase of the Magnesia Binder System [J].

Dinnebier, Robert E. ;

Freyer, Daniela ;

Bette, Sebastian ;

Oestreich, Melanie .

INORGANIC CHEMISTRY, 2010, 49 (21) :9770-9776

[9]

[封国富 Feng Guofu], 2003, [稀有金属, Chinese Journal of Rare Metals], V27, P57

[10]

Jiang SY, 2004, ACTA PETROL SIN, V20, P765

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