含碱硅酸钠溶液的回收和利用工艺研究

doi:10.19964/j.issn.1006-4990.2021-0258

Abstract

Abstract:

Adding lime as desilication agent,the desilication solution of alkali leaching containing sodium silicate was recov-ered after desilication treatment.The desilication solution was recycled to desilicate high silica bauxite.The effect of calcium/silica ratio,caustic soda concentration,initial silica concentration and desilication time on desilication ratio were investigated,and the effect of recycling desilication was verified under the optimal desilication condition.The results of desilication showed that under alkaline condition[ρ（Na₂O）≈100 g/L],the concentration of silica in the solution decreased from about 7 g/L to about 1 g/L after adding lime with calcium silicon ratio of 1.2 for 2 h.The results of cyclic desilication showed that the n（Al）/n（Si） of bauxite was greater than 7 after 5 cycles of alkali liquor.This not only provided theoretical guidance for alumina in-dustrial production,but also provided an effective way for caustic solution recycling.

Key words: high silicon bauxite, alkali leaching desiliation, sodium solution, sodium silicate, recycling

CLC Number:

TQ127.2

HAN Dong,ZHANG Qiang,ZHANG Min. Study on recovery and utilization process of alkali containing sodium silicate solution[J]. Inorganic Chemicals Industry, 2022, 54(2): 106-110.

Figures/Tables 6

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Table 1

Table 2

References 23

[1]	PAN X, YU H, TU G, et al. Effects of precipitation activity of desili-cation products (DSPs) on stability of sodium aluminate solution[J]. Hydrometallurgy, 2016, 165:261-269. doi: 10.1016/j.hydromet.2016.01.034
[2]	徐颖鹏, 李军旗, 陈朝轶. 硅渣与石灰对含硅碱液的协同脱硅作用[J]. 贵州大学学报:自然科学版, 2020, 37(3):36-41.
[3]	PENG H, VAUGHAN J. Aluminate effect on desilication product ph-ase transformation[J]. Journal of Crystal Growth, 2018, 492:84-91. doi: 10.1016/j.jcrysgro.2018.04.013
[4]	GERSON A R, ZHENG K. Bayer process plant scale:Transformation of sodalite to cancrinite[J]. Journal of Crystal Growth, 1997, 171(1):209-218. doi: 10.1016/S0022-0248(96)00482-4
[5]	LI X B, ZHAO Z, LIU G H, et al. Behavior of calcium silicate hydrate in aluminate solution[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(5):1145-1149.
[6]	CHEN J J, THOMAS J J, TAYLOR H F W, et al. Solubility and struc-ture of calcium silicate hydrate[J]. Cement & Concrete Research, 2004, 34(9):1499-1519.
[7]	CHEN F F, ZHANG Y F, JIANG X D, et al. Structure transformation of sodium aluminosilicates as desilication agents in the desilication of highly alkaline sodium aluminate solution containing silica[J]. Microporous and Mesoporous Materials, 2016, 235:224-232. doi: 10.1016/j.micromeso.2016.08.011
[8]	LIU G H, ZHANG W, QI T G, et al. Influence of silicate anions struc-ture on desilication in silicate-bearing sodium aluminate solution[J]. Journal of Central South University, 2016, 23(7):1569-1575. doi: 10.1007/s11771-016-3210-1
[9]	TAYLOR H F W. Proposed structure for calcium silicate hydrate gel[J]. Journal of the American Ceramic Society, 2010, 69(6):464-467. doi: 10.1111/jace.1986.69.issue-6
[10]	JIANG T, PAN X L, WU Y, et al. Mineral transition of desilication products precipitated in synthetic sodium aluminate solution un-der atmospheric pressure[J]. Transactions of Nonferrous Metals So-ciety of China, 2018, 28(2):367-375.
[11]	王仲明, 彭志宏, 齐天贵, 等. 从含碱硅酸钠溶液中水热合成硅灰石[J]. 硅酸盐通报, 2017, 36(10):3446-3451.
[12]	李光辉, 张吉清, 罗骏, 等. 硅酸钠溶液合成托贝莫来石晶须[J]. 硅酸盐学报, 2012, 40(12):1721-1727.
[13]	李洋洋, 马淑花, 王建宇, 等. 粉煤灰预脱硅液动态水热合成硅酸钙晶须的影响因素[J]. 过程工程学报, 2016, 16(1):156-163.
[14]	何伯泉, 刘桂华, 李小斌等. 浓碱中水合硅酸钙形成的研究[J]. 中南工业大学学报, 1998(3):245-248.
[15]	XU Y P, LI J Q, CHEN C Y, et al. Desilication and recycling of al-kali-silicate solution for low-grade high-silica bauxite utilizati-on[J]. JOM:the Journal of the Minerals,Metals & Materials Soci-ety, 2019, 72(7):2705-2712.
[16]	LIU G H, HE Q, LI X B, et al. Synjournal and reaction behavior of calcium silicate hydrate in basic system[J]. Transactions of Non-ferrous Metals Society of China, 2004, 14(6):1204-1209.
[17]	YUAN J, ZHANG Y. Desiliconization reaction in sodium aluminate solution by adding tricalcium hydroaluminate[J]. Hydrometallur-gy, 2009, 95(1):166-169.
[18]	RUAN S, SHI L, LI J, et al. Desilication of hematite,goethite and iron powder seeded low alumina to caustic liquors[J]. Hydromet-allurgy, 2017, 169:297-305.
[19]	SHI L, RUAN S, LI J, et al. Desilication of low alumina to caustic liquor seeded with sodalite or cancrinite[J]. Hydrometallurgy, 2017, 170:5-15. doi: 10.1016/j.hydromet.2016.06.023
[20]	LIU G, WU G, CHEN W, et al. Increasing precipitation rate from sodium aluminate solution by adding active seed and ammonia[J]. Hydrometallurgy, 2018, 176:253-259. doi: 10.1016/j.hydromet.2018.02.003
[21]	HONG T, ZHANG Y, LIU M, et al. Desilication of concentrated al-kali solution by novel desilication reagent calcium hydroferrocar-bonate:Part I.Synjournal of desilication reagent[J]. Hydrometallurgy, 2018, 182:21-26. doi: 10.1016/j.hydromet.2018.10.014
[22]	XU Y P, CHEN C Y, LAN Y P, et al. Desilication and recycling of alkali-silicate solution seeded with red mud for low-grade bauxite utilization[J]. Journal of Materials Research and Technology. 2020, 9(4):7418-7426. doi: 10.1016/j.jmrt.2020.04.095
[23]	THOMAS J J, JENNINGS H M, ALLEN A J. Relationships between composition and density of tobermorite,jennite,and nanoscale CaO-SiO₂-H₂O[J]. The Journal of Physical Chemistry, 2010, 114(17):7594-7601.

元素	图4a		图4b
元素	质量分数/%	原子分数/%	质量分数/%	原子分数/%
C	8.17	13.45	9.12	12.04
O	51.23	57.70	59.93	60.85
Na	1.66	2.93	3.22	1.76
Si	2.94	5.17	9.69	6.94
Ca	34.64	16.41	16.69	12.37
Al	1.01	1.87	1.35	0.32
Cl	0.22	0.15	—	—
Mg	0.13	0.69	—	—
Tm	—	—	1.35	0.32
总量	100.00		100.00

循环次数	溶液脱硅率/%	脱硅后碱浓度/（g·L^-1）	溶液铝损失/%	矿石铝损失/%	铝硅物质的量比
1次循环	87.52	95.02	0.84	0.92	7.48
2次循环	87.05	95.95	1.13	1.01	7.29
3次循环	88.29	94.75	0.74	1.04	7.17
4次循环	88.02	90.52	1.65	1.23	7.56
5次循环	85.88	91.88	1.03	0.87	7.40

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Inorganic Acid-Base-Salt Committee of CIESC

Study on recovery and utilization process of alkali containing sodium silicate solution

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