Effect of molten salt types on synthesis of forsterite by molten salt method

doi:10.3969/j.issn.1001-1935.2022.03.001

Refractories ›› 2022, Vol. 56 ›› Issue (3): 185-188.DOI: 10.3969/j.issn.1001-1935.2022.03.001

Effect of molten salt types on synthesis of forsterite by molten salt method

Wang Shaoyang¹⁾(), Qi Xin¹^,²⁾, Luo Xudong¹⁾(), Jing Changsheng³⁾, Li Zhen⁴⁾, Wang Peng⁵⁾

1)School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China

Received:2021-05-31 Online:2022-06-15 Published:2022-06-24
Contact: Luo Xudong

熔盐种类对熔盐法合成镁橄榄石的影响

王少阳¹⁾(), 祁欣¹^,²⁾, 罗旭东¹⁾(), 井长胜³⁾, 李振⁴⁾, 王鹏⁵⁾

1)辽宁科技大学材料与冶金学院辽宁鞍山 114051
2)辽宁科技学院辽宁本溪 117004
3)辽宁省国家新材料工程建设中心辽宁沈阳 110032
4)营口理工学院辽宁营口 115014
5)鞍山市和丰耐火材料有限公司辽宁鞍山 114051

通讯作者: 罗旭东
作者简介:王少阳:男,1999年生,硕士研究生。E-mail: 544024236@qq.com
基金资助:
国家自然科学基金联合基金资助项目(U1908227);辽宁省自然基金指导计划(2019-ZD-0367)

Abstract

Abstract:

Forsterite was synthesized by the molten salt method at 1 100 ℃ for 3 h,using analytically pure MgO and SiO₂ as raw materials and analytically pure NaCl,Na₂CO₃,NaCl-Na₂CO₃ and Na₂SO₄ as the molten salt medium,respectively.The synthesized forsterite was analyzed by XRD,SEM,EDS and Jade.The results show that the purity of the forsterite synthesized with Na₂CO₃ or NaCl-Na₂CO₃ as the molten salt medium is very low,because Na₂CO₃ reacts with MgO and SiO₂ to produce a large amount of Na₂MgSiO₄.The purity of the forsterite synthesized with NaCl as the molten salt medium is very high while that synthesized with Na₂SO₄ is high and a small amount of MgSiO₃ is formed.The analysis shows that the mechanism of synthesizing forsterite in NaCl molten salt is “template growth”,and that in Na₂SO₄ molten salt is “dissolution-precipitation”.

Key words: molten salt method, forsterite, sodium chloride, sodium sulfate, sodium carbonate

摘要：

以分析纯MgO和SiO₂为原料,分别以分析纯NaCl、Na₂CO₃、NaCl-Na₂CO₃和Na₂SO₄为熔盐介质,采用熔盐法在1 100 ℃保温3 h合成镁橄榄石,并对合成镁橄榄石进行了XRD、SEM、EDS、Jade分析。结果表明:以Na₂CO₃或NaCl-Na₂CO₃为熔盐介质合成的镁橄榄石纯度很低,因为Na₂CO₃与MgO和SiO₂反应生成了大量的Na₂MgSiO₄。以NaCl为熔盐介质合成的镁橄榄石纯度非常高。以Na₂SO₄为熔盐介质合成的镁橄榄石纯度较高,有少量MgSiO₃生成。分析认为,在NaCl熔盐中合成镁橄榄石的机制为“模板生长”,在Na₂SO₄熔盐中合成镁橄榄石的机制为“溶解-析出”。

关键词: 熔盐法, 镁橄榄石, 氯化钠, 硫酸钠, 碳酸钠

CLC Number:

TQ175

Wang Shaoyang, Qi Xin, Luo Xudong, Jing Changsheng, Li Zhen, Wang Peng. Effect of molten salt types on synthesis of forsterite by molten salt method[J]. Refractories, 2022, 56(3): 185-188.

王少阳, 祁欣, 罗旭东, 井长胜, 李振, 王鹏. 熔盐种类对熔盐法合成镁橄榄石的影响[J]. 耐火材料, 2022, 56(3): 185-188.

Figures/Tables 5

References 13

[1]	孟超, 孟庆新, 李晓龙, 等. 利用天然镁橄榄石制备轻质原料的工艺研究及其应用[J]. 耐火材料, 2021, 55(3):230-234.
[2]	BAN T, OHYA Y, TAKAHASHI Y. Low-temperature crystallization of forsterite and orthoenstatite[J]. Journal of the American Ceramic Society, 1999, 82(1):22-26. DOI URL
[3]	孟庆新, 周宁生, 刘昭, 等. 高纯镁橄榄石质轻质微孔原料的制备[J]. 耐火材料, 2020, 54(1):56-60.
[4]	MENG C, MENG Q X, LI X L, et al. Preparation and application of light-weight raw materials using natural forsterite[J]. China’s Refractories, 2021, 30(3): 37-42.
[5]	张小军, 祝洪喜, 邓承继, 等. 熔盐法制备镁橄榄石轻质保温隔热材料的物相及性能[J]. 机械工程材料, 2015, 39(2):26-29.
[6]	丁军, 邓承继, 祝洪喜, 等. 以Na₂SO₄介质制备镁橄榄石轻质材料的性能研究[J]. 耐火材料, 2013, 47(5):358-361.
[7]	王杏, 董喆, 王君君, 等. 镁源种类对熔盐法合成镁橄榄石的影响[J]. 耐火材料, 2017, 51(2):140-142.
[8]	李雪冬. 熔盐法合成莫来石粉体和氧化锆-莫来石复合粉体研究[D]. 武汉: 武汉科技大学, 2007.
[9]	FAZLIR, GOLESTANI-FARD F . Influence of zirconia particle size on the synthesis of CaZrO₃ nano-powders from Na₂CO₃-NaCl molten eutectic salt[J]. Advanced Powder Technology, 2014, 25(5): 1547-1553. DOI URL
[10]	陈俊红, 闫明伟, 宿金栋, 等. 反应烧结法合成铁铝尖晶石晶体的XRD结构精修[J]. 人工晶体学报, 2015, 44(9):2402-2406.
[11]	周亮. 天然镁橄榄石制备新型隔热材料[D]. 武汉: 武汉科技大学, 2011.
[12]	EBRAHIMI M E, ALLAHVERDI M, SAFARI A. Synthesis of high aspect ratio platelet SrTiO₃[J]. Journal of the American Ceramic Society, 2005, 88(8):2129-2132 DOI URL
[13]	苏周. 熔盐法合成片状氧化铝粉体的研究[D]. 长沙: 中南大学, 2004.

试样	w/%
试样	Mg₂SiO₄	MgO	Na₂MgSiO₄	MgSiO₃
M₁	100
M₂	20.8	17.5	61.7
M₃	38.2	16.4	45.4
M₄	77.6	18.6		3.8

试样	w/%
试样	Mg₂SiO₄	MgO	Na₂MgSiO₄	MgSiO₃
M₁	100
M₂	20.8	17.5	61.7
M₃	38.2	16.4	45.4
M₄	77.6	18.6		3.8

区域	w/%
区域	O	Mg	Si	Na
1	57.57	30.10	12.32	—
2	50.13	22.56	10.11	17.20
3	53.41	46.59	—	—
4	61.39	26.74	11.87	—
5	52.39	20.68	10.43	16.50
6	56.28	43.72	—	—
7	54.47	31.61	13.92	—
8	59.39	22.35	18.26	—
9	55.64	44.36	—	—
10	54.47	34.16	11.37	—

区域	w/%
区域	O	Mg	Si	Na
1	57.57	30.10	12.32	—
2	50.13	22.56	10.11	17.20
3	53.41	46.59	—	—
4	61.39	26.74	11.87	—
5	52.39	20.68	10.43	16.50
6	56.28	43.72	—	—
7	54.47	31.61	13.92	—
8	59.39	22.35	18.26	—
9	55.64	44.36	—	—
10	54.47	34.16	11.37	—

Effect of molten salt types on synthesis of forsterite by molten salt method

熔盐种类对熔盐法合成镁橄榄石的影响

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