Preparation of Coal Gangue Glass-ceramics by Direct Sintering
-
摘要:
以煤矸石为主要原料,CaO为助熔剂,采用直接烧结法制备微晶玻璃。探讨了热处理制度对微晶玻璃物相组成、吸水率、体积密度、线收缩率等物化性能的影响。结果表明:本试验所用煤矸石主要含SiO2 40%~50%、Al2O3 25%~40%、Fe2O3 5%~10%,在1 280℃下焙烧60 min,所制备的微晶玻璃主晶相为莫来石。同时,其体积密度和线收缩率最大,分别达2.155 g/cm3和17.911%,吸水率为0.302%。该工艺为煤矸石的资源化利用提供了一种途径。
Abstract:The SiO2-Al2O3-CaO system glass-ceramics were prepared by direct sintering method with coal measure solid waste-coal gangue as the main raw material, supplemented by a certain amount of CaO. The effects of heat treatment on the physical and chemical properties of SiO2-Al2O3-CaO glass-ceramics, such as phase composition, water absorption, bulk density and linear shrinkage, were discussed. The results showed that the main crystalline phase of the gangue glass-ceramics prepared at 1 280℃ for 60 min was mullite. Meanwhile, the bulk density and linear shrinkage were the largest, which were 2.155 g/cm3 and 17.911%, respectively, and the water absorption rate was 0.302%. It provided an effective way for the utilization of coal gangue.
-
Key words:
- gangue /
- glass-ceramics /
- sintering process /
- heat treatment
-
表 1 煤矸石的化学成分分析
Table 1. Chemical composition of the coal gangue
/% 成分 SiO2 Al2O3 Fe2O3 CaO TiO2 K2O SO3 P2O5 SrO 含量 48.01 29.16 9.71 5.44 2.88 1.85 1.25 0.44 0.31 成分 BaO ZrO2 MgO Rb2O Na2O MnO ZnO NiO 其他 含量 0.19 0.19 0.16 0.10 0.09 0.06 0.05 0.03 0.08 -
[1] YANG M, GUO Z, DENG Y, et al. Preparation of CaO-Al2O3-SiO2 glass ceramics from coal gangue[J]. International journal of mineral processing, 2012, 102: 112-115. https://www.sciencedirect.com/science/article/pii/S0301751611001700
[2] 姜鹏. 煤矸石微晶玻璃的制备与性能研究[D]. 福州: 福州大学, 2004.
JIANG P. Study on preparation and properties of coal gangue glass-ceramics[D]. Fuzhou: Fuzhou University, 2004.
[3] 姜鹏, 俞建长, 王嘉庆. 煤矸石微晶玻璃热处理工艺的研究[J]. 福州大学学报(自然科学版), 2004(1): 52-55. doi: 10.3969/j.issn.1000-2243.2004.01.013
JIANG P, YU J C, WANG J Q. Research of the heat treatment of gangue glass-ceramic[J]. Journal of Fuzhou University, 2004(1): 52-55. doi: 10.3969/j.issn.1000-2243.2004.01.013
[4] 管艳梅. 煤矸石微晶玻璃制备及性能研究[D]. 合肥: 安徽建筑大学, 2016.
GUAN Y. Preparation and properties of coal gangue glass-ceramics[D]. Hefei: Anwei University of Architecture, 2016.
[5] 管艳梅, 陈伟, 孙道胜. 利用磷渣和煤矸石制备建筑微晶玻璃的研究[J]. 陶瓷学报, 2020, 41(1): 88-92. https://www.cnki.com.cn/Article/CJFDTOTAL-TCXB202001017.htm
GUAN Y, CHEN W, SUN D S, et al. Preparation of architectural glass-ceramics from phosphorus slag and coal gangue[J]. Journal of ceramics, 2020, 41(1): 88-92. https://www.cnki.com.cn/Article/CJFDTOTAL-TCXB202001017.htm
[6] 管艳梅, 陈伟, 孙道胜, 等. 碳酸钙对磷渣-煤矸石烧结多孔微晶玻璃结构和性能的影响[J]. 功能材料, 2021, 52(4): 4105-4109. doi: 10.3969/j.issn.1001-9731.2021.04.015
GUAN Y, CHEN W, SUN D S, et al. Effect of calcium carbonate on the preparation of porous glass-ceramics from phosphorus slag and coal gangue[J]. Function Materials, 2021, 52(4): 4105-4109. doi: 10.3969/j.issn.1001-9731.2021.04.015
[7] 王国平. 辽宁阜新煤矸石资源化研究[D]. 成都: 成都理工大学, 2005.
WANG G P. Study on resource utilization of coal gangue in Liaoning Fuxin[D]. Chengdu: Chengdu Univerisity of Technology, 2005.
[8] WANG C, REN Z, ZHENG Y, et al. Effects of heat treatment system on mechanical strength and crystallinity of CaO-MgO-Al2O3-SiO2 glass-ceramics containing coal gangue and iron ore tailings[J]. Journal of New Materials for Electro Chemical Systems, 2019, 22(2): 70-78.
[9] WANG C, ZEHENG Y, LIU S, et al. Microstructure and mechanical properties of glass-ceramics prepared with coal gangue and iron ore tailings[J]. Rare metal materials and engineering, 2015, 441: 234-238.
[10] LI Z, LUO Z, LI X, et al. Preparation and characterization of glass-ceramic foams with waste quartz sand and coal gangue in different proportions[J]. Journal of porous materials, 2016, 23(1): 231-238. https://link.springer.com/article/10.1007/s10934-015-0074-y
[11] DANG W, HE H Y. Glass-ceramics fabricated by efficiently utilizing coal gangue[J]. Journal of Asian Ceramic Societies, 2020, 8(2): 365-372.
[12] DANG W, HE H. Comprehensively utilizing waste coal gangue to fabricate high strength glass-ceramics[J]. Journal of Ceramic Processing Research, 2020, 21(1): 69-74.
[13] YU B, DU Y, WEI L, et al. Valorization of coal gangue and vanadium-titanium slag into glass-ceramic coating for oxidation resistance of 60Si2Mn spring steel at high temperature[J]. Isij International, 2021, 61(1): 326-334.
[14] 王长龙, 梁宝瑞, 郑永超, 等. 热处理对煤矸石铁尾矿微晶玻璃微观结构和力学性能影响[J]. 材料热处理学报, 2015, 36(11): 13-18. https://www.cnki.com.cn/Article/CJFDTOTAL-JSCL201511003.htm
WANG C L, LIANG B R, ZHENG Y C, et al. Effect of heat treatment on microstructure and mechanical properties of glass-ceramics from coal gangue iron tailings[J]. Journal of Materials Heat Treatment, 2015, 36(11): 13-18. https://www.cnki.com.cn/Article/CJFDTOTAL-JSCL201511003.htm
[15] 王长龙, 魏浩, 仇夏杰, 等. 利用煤矸石铁尾矿制备CaO-MgO-Al2O3-SiO2系微晶玻璃[J]. 煤炭学报, 2015, 40(5): 1181-1187. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201505033.htm
WANG C L, WEI H, CHOU X J, et al. CaO-MgO-Al2O3-SiO2 glass ceramics were prepared from coal gangue iron tailings[J]. Journal of Coal, 2015, 40(5): 1181-1187. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201505033.htm
[16] 杨亚楠. 以煤矸石和稻壳为主要原料制备微晶玻璃及其性能研究[D]. 合肥: 安徽理工大学, 2018.
YANG Y L. Preparation and properties of glass-ceramics from coal gangue and rice husk[D]. Hefei: Anhui University of Science and Technology, 2018.
[17] 杨梅, 邓寅生, 邢学玲. 高掺量粉煤灰-煤矸石微晶玻璃的研究[J]. 粉煤灰综合利用, 2005(4): 46-48. https://www.cnki.com.cn/Article/CJFDTOTAL-FMLE200504019.htm
YANG M, DENG Y S, XING X L. Study on high fly ash-coal gangue microcrystalline glass[J]. Fly Ash Comprehensive Utilization, 2005(4): 46-48. https://www.cnki.com.cn/Article/CJFDTOTAL-FMLE200504019.htm