Process mechanism and dynamic behaviors of magnesium sulfate type carnallite converting into kainite

doi:10.11949/0438-1157.20220510

Abstract

Abstract:

The existence of magnesium sulfate affects the potassium salt yield and product quality of carnallite (Car) processing. In this study, the incomplete decomposition experiments of magnesium sulfate Car in Yiliping salt lake was carried out at 25℃, the decomposition and formation mechanism, and the dynamic behavior of potassium salts were studied. The results show that: (1) Magnesium sulfate type Car will decomposes rapidly when water added, and after 3—4 h of induction period, potassium chloride and magnesium sulfate will gradually converts into kainite (Kai), although there is no Kai phase area on the metastable phase diagram. When phase equilibria achieved after 50 h, nearly 55% of the total potassium converts into Kai, about 20% dissolves in decomposition solution, and only 25% exists as solid potassium chloride. (2) During the conversion process, if there is magnesium sulfate hydrate, the illusion of “metastable state with fixed solid and liquid points” will appear, In fact, it is the dynamic process of the conversion of potassium chloride and magnesium sulfate hydrate into kaleite. When the solid phase magnesium sulfate hydrate is absent, the liquid point will move to the tetrasalt co-saturation point of sodium chloride, potassium chloride, kaleite, and carnallite. (3) In the kinetic equation of Kai formation, the order of the reaction driving force (the difference between the ionic activity products at invariable point and process point) is 1.5, the influence index of the product stock is 2/3, and the reaction rate constant is 3.907×10^-4 mol^1/3·min^-1. The kinetic equation and the full-component material equation constitute a dynamic model, which can quantitatively express the state of the solid-liquid mixing system at any time during the transformation process. These results have important guiding significance for improving the utilization process of potassium resources in salt lakes.

Key words: magnesium sulfate subtype salt lake, carnallite, kainite, phase equilibria, multiphase reaction, kinetic modeling

摘要：

硫酸镁的存在影响光卤石矿加工的钾盐收率和产品质量。通过对一里坪盐湖硫酸镁型光卤石进行等温不完全分解实验，研究了钾盐分解转化机制和动态特征，并建立了钾盐转化过程的动态模型。结果表明：（1）硫酸镁型光卤石在加水过程迅速分解，而经过3~4 h诱导期，氯化钾与硫酸镁会逐渐转化为钾盐镁矾，经过50 h系统达到平衡，总钾量的近55%转化为钾盐镁矾，约20%溶于分解液，仅25%以固相氯化钾存在；（2）转化过程中，如有硫酸镁水合物存在，会出现“固、液相点不动的介稳态”假象，而实际上是氯化钾和硫酸镁水合物转化为钾盐镁矾的动态过程，当固相硫酸镁水合物缺失，液相点会向氯化钠、氯化钾、钾盐镁矾、光卤石的四盐共饱点移动；（3）钾盐镁矾生成的动力学方程的反应推动力（离子活度积与共饱点活度积之差）级数为1.5，产物存量的影响指数为2/3，反应速率常数为3.907×10^-4 mol^1/3·min^-1，动力学方程与全组分物料方程构成了动态模型，可量化表达转化过程中任意时刻固液混合体系的状态。这一研究结果对改善盐湖钾资源利用过程具有重要指导意义。

关键词: 硫酸镁亚型盐湖, 光卤石, 钾盐镁矾, 相平衡, 多相反应, 动力学模型

CLC Number:

TQ 443

Huan ZHOU, Mengli ZHANG, Qing HAO, Si WU, Jie LI, Cunbing XU. Process mechanism and dynamic behaviors of magnesium sulfate type carnallite converting into kainite[J]. CIESC Journal, 2022, 73(9): 3841-3850.

周桓, 张梦丽, 郝晴, 吴思, 李杰, 徐存兵. 硫酸镁型光卤石转化钾盐镁矾的过程机制与动态规律[J]. 化工学报, 2022, 73(9): 3841-3850.

Figures/Tables 11

Fig.1 Comparison between the 25℃ equilibrium phase diagram[14] and “metastable phase diagram” [17] of quinary system

Table 1 Composition of magnesium sulfate type carnallite

盐类	组成/%
盐类	25℃	15℃	一里坪矿样一	一里坪矿样二
KCl·MgCl₂·6H₂O	63.54	68.62	56.42	36.48
MgSO₄·7H₂O	33.12	22.97	25.98	30.98
KCl·MgSO₄·2.75H₂O	—	—	—	4.08
KCl	—	—	—	13.38
NaCl	3.34	8.41	4.68	9.87
其他	—	—	12.92	5.21

Fig.2 Composition points of magnesium sulfate type carnallite ore points and decomposition liquid

Fig.3 Conversion mechanism of magnesium sulfate type carnallite convert to kainite

Fig.4 Phase diagram analysis of magnesium sulfate type carnallite convert into kainite

Table 2 Solid and liquid ion concentrations of kainite converted from carnallite ore with water at 25℃

时间/min	液相化学组成/%						湿固相化学组成/%
时间/min	Na⁺	K⁺	Mg²⁺	Cl^-	$S O 4 2 -$	H₂O	Na⁺	K⁺	Mg²⁺	Cl^-	$S O 4 2 -$	H₂O
0	3.50	9.08	8.46	30.19	11.00	37.78	5.30	10.50	7.18	28.87	13.25	34.90
5	0.07	2.42	7.00	18.81	5.29	66.41	5.14	10.45	7.20	28.60	13.31	35.30
10	0.30	2.46	7.03	18.98	5.72	65.50	4.97	9.67	7.11	27.97	12.47	37.82
20	0.47	2.34	6.98	19.23	5.38	65.61	4.42	10.28	7.12	27.96	12.14	38.06
30	0.28	2.38	6.94	18.98	5.22	66.19	4.33	9.68	7.28	27.74	12.11	38.86
60	0.09	2.33	7.10	19.14	5.18	66.16	4.10	10.25	7.14	27.39	12.27	38.85
120	0.31	2.36	7.05	19.39	5.13	65.76	5.00	10.03	7.10	27.87	13.09	36.91
240	0.40	2.32	7.05	19.41	5.24	65.58	4.12	10.26	7.31	27.76	12.52	38.03
360	0.42	2.28	7.00	19.30	5.20	65.79	3.84	10.79	7.32	27.96	12.32	37.77
480	0.46	2.25	6.96	19.18	5.26	65.89	3.88	11.06	7.29	28.70	11.63	37.44
600	0.47	2.25	6.96	19.30	5.09	65.93	4.21	11.35	7.12	28.23	12.62	36.46
720	0.45	2.21	6.93	19.20	5.02	66.19	4.51	10.43	7.07	27.73	12.61	37.64
900	0.47	2.19	6.90	19.20	4.93	66.31	4.16	10.33	7.16	27.71	12.13	38.51
1080	0.49	2.25	6.95	19.23	5.22	65.85	4.48	10.61	7.13	28.10	12.51	37.17
1260	0.52	2.29	6.96	19.23	5.37	65.63	5.44	10.07	7.09	28.59	13.05	35.75
1440	0.47	2.29	6.92	19.15	5.21	65.95	5.78	10.92	7.12	29.79	13.27	33.11
1620	0.35	2.26	6.98	19.20	5.10	66.10	4.80	10.89	7.43	27.79	15.13	33.96
1823^①	0.36	2.19	6.96	19.32	4.78	66.39	—	—	—	—	—	—
1920	0.38	1.90	6.88	19.80	3.48	67.57	5.31	11.22	7.25	29.45	13.64	33.13
2220	0.34	1.90	6.72	19.94	2.59	68.50	5.73	11.95	7.76	30.09	16.55	27.92
2400	0.35	1.93	6.65	19.92	2.39	68.76	5.49	11.90	7.38	30.33	14.15	30.76
2700	0.38	1.92	6.68	20.18	2.22	68.62	4.98	11.95	7.64	30.91	13.40	31.13
3000	0.50	1.92	6.56	20.10	2.10	68.82	5.30	10.50	7.18	28.87	13.25	34.90

Table 2 Solid and liquid ion concentrations of kainite converted from carnallite ore with water at 25℃

时间/min	液相化学组成/%						湿固相化学组成/%
时间/min	Na⁺	K⁺	Mg²⁺	Cl^-	$S O 4 2 -$	H₂O	Na⁺	K⁺	Mg²⁺	Cl^-	$S O 4 2 -$	H₂O
0	3.50	9.08	8.46	30.19	11.00	37.78	5.30	10.50	7.18	28.87	13.25	34.90
5	0.07	2.42	7.00	18.81	5.29	66.41	5.14	10.45	7.20	28.60	13.31	35.30
10	0.30	2.46	7.03	18.98	5.72	65.50	4.97	9.67	7.11	27.97	12.47	37.82
20	0.47	2.34	6.98	19.23	5.38	65.61	4.42	10.28	7.12	27.96	12.14	38.06
30	0.28	2.38	6.94	18.98	5.22	66.19	4.33	9.68	7.28	27.74	12.11	38.86
60	0.09	2.33	7.10	19.14	5.18	66.16	4.10	10.25	7.14	27.39	12.27	38.85
120	0.31	2.36	7.05	19.39	5.13	65.76	5.00	10.03	7.10	27.87	13.09	36.91
240	0.40	2.32	7.05	19.41	5.24	65.58	4.12	10.26	7.31	27.76	12.52	38.03
360	0.42	2.28	7.00	19.30	5.20	65.79	3.84	10.79	7.32	27.96	12.32	37.77
480	0.46	2.25	6.96	19.18	5.26	65.89	3.88	11.06	7.29	28.70	11.63	37.44
600	0.47	2.25	6.96	19.30	5.09	65.93	4.21	11.35	7.12	28.23	12.62	36.46
720	0.45	2.21	6.93	19.20	5.02	66.19	4.51	10.43	7.07	27.73	12.61	37.64
900	0.47	2.19	6.90	19.20	4.93	66.31	4.16	10.33	7.16	27.71	12.13	38.51
1080	0.49	2.25	6.95	19.23	5.22	65.85	4.48	10.61	7.13	28.10	12.51	37.17
1260	0.52	2.29	6.96	19.23	5.37	65.63	5.44	10.07	7.09	28.59	13.05	35.75
1440	0.47	2.29	6.92	19.15	5.21	65.95	5.78	10.92	7.12	29.79	13.27	33.11
1620	0.35	2.26	6.98	19.20	5.10	66.10	4.80	10.89	7.43	27.79	15.13	33.96
1823^①	0.36	2.19	6.96	19.32	4.78	66.39	—	—	—	—	—	—
1920	0.38	1.90	6.88	19.80	3.48	67.57	5.31	11.22	7.25	29.45	13.64	33.13
2220	0.34	1.90	6.72	19.94	2.59	68.50	5.73	11.95	7.76	30.09	16.55	27.92
2400	0.35	1.93	6.65	19.92	2.39	68.76	5.49	11.90	7.38	30.33	14.15	30.76
2700	0.38	1.92	6.68	20.18	2.22	68.62	4.98	11.95	7.64	30.91	13.40	31.13
3000	0.50	1.92	6.56	20.10	2.10	68.82	5.30	10.50	7.18	28.87	13.25	34.90

Table 3 Salt composition and mother liquor amount in the process of kainite converted from carnallite ore at 25℃

时间/min	固、液相质量（盐的质量和干基质量百分比）/%
时间/min	Car		Kai		Eps		KCl		NaCl		母液
0	603.46	61.01	0	0	283.87	28.70	12.15	1.23	89.59	9.06	0
5	273.08	42.69	0	0	204.28	31.94	73.77	11.53	88.51	13.84	586.44
10	264.99	42.79	0	0	194.74	31.45	74.48	12.03	85.01	13.73	606.86
20	267.71	42.71	0	0	201.17	32.09	75.48	12.04	82.49	13.16	599.23
30	276.56	43.17	0	0	205.46	32.07	73.28	11.44	85.36	13.32	585.43
60	256.37	40.85	0	0	204.37	32.56	78.72	12.54	88.2	14.05	598.42
120	257.12	41.15	0	0	204.76	32.77	78.00	12.48	84.9	13.59	601.30
240	256.37	41.29	0.10	0.02	202.44	32.60	78.54	12.65	83.47	13.44	605.27
360	268.45	42.38	0.43	0.07	204.96	32.36	76.2	12.03	83.37	13.16	592.67
480	267.91	42.35	1.32	0.21	203.95	32.24	76.04	12.02	83.36	13.18	593.49
600	266.79	42.29	3.20	0.51	201.83	31.99	75.69	12.00	83.34	13.21	595.23
720	264.77	42.18	6.58	1.05	198.01	31.54	75.07	11.96	83.31	13.27	598.34
900	259.89	41.90	14.76	2.38	188.77	30.44	73.56	11.86	83.23	13.42	605.88
1080	251.49	41.42	28.81	4.74	172.88	28.47	70.96	11.69	83.10	13.68	618.84
1260	238.72	40.63	50.18	8.54	148.72	25.31	67.02	11.41	82.89	14.11	638.55
1440	220.61	39.42	80.48	14.38	114.47	20.46	61.42	10.98	82.59	14.76	666.49
1620	194.5	37.46	124.18	23.91	65.08	12.53	53.35	10.27	82.17	15.82	706.79
1823^①	160.10	34.34	181.76	38.99	0.00	0.00	42.72	9.16	81.61	17.51	759.88
1920	145.29	29.89	215.93	44.42	0.00	0.00	42.43	8.73	82.45	16.96	739.93
2220	155.11	30.39	238.20	46.66	0.00	0.00	33.78	6.62	83.37	16.33	717.47
2400	161.6	31.27	240.84	46.60	0.00	0.00	31.13	6.02	83.30	16.12	710.39
2700	150.69	29.58	242.77	47.66	0.00	0.00	33.29	6.53	82.67	16.23	717.49
3000	165.28	31.84	243.71	46.95	0.00	0.00	29.54	5.69	80.54	15.52	707.01

Fig.5 The liquid composition change in magnesium sulfate type carnallite ore decompose process

Fig.6 XRD pattern of solid phase during carnallite ore decompose process

Fig.7 Driving force changes of potassium magnesium alum precipitation process with time

Fig.8 Salts conversion behaviors in carnallite decomposition process

References 35

1	郑绵平, 刘喜方. 青藏高原盐湖水化学及其矿物组合特征[J]. 地质学报, 2010, 84(11): 1585-1600.
	Zheng M P, Liu X F. Hydrochemistry and minerals assemblages of salt lakes in the Qinghai-Tibet plateau, China[J]. Acta Geologica Sinica, 2010, 84(11):1585-1600.
2	唐发满, 解安福, 昝超, 等. 东、西台吉乃尔盐湖及一里坪盐湖卤水资源开发现状及对策研究[J]. 化工矿物与加工, 2020, 49(2): 48-51.
	Tang F M, Xie A F, Zan C, et al. Research on development status and countermeasure of brine resources in east-west Ginair and Yiliping salt lake[J]. Industrial Minerals & Processing, 2020, 49(2): 48-51.
3	国土资源部关于铁、铜、铅、锌、稀土、钾盐和萤石等矿产资源合理开发利用“三率”最低指标要求(试行)的公告[Z]. 2013.
	Ministry of Land and Resources of P. R. China announcement on the minimum index requirements for reasonable exploitation and utilization of iron, copper, lead, zinc, rare earth, potash and fluorite and other mineral resources (Trial)[Z]. 2013.
4	邓天龙, 周桓, 陈侠. 水盐体系相图及应用[M]. 2版. 北京: 化学工业出版社, 2020.
	Deng T L, Zhou H, Chen X. Salt-water System Phase Diagrams and Applications[M]. 2nd ed. Beijing: Chemical Industry Press, 2020.
5	李浩, 唐中凡, 尹新斌, 等. 罗布泊盐湖卤水等温蒸发研究[J]. 化工矿物与加工, 2008, 37(11): 5-8.
	Li H, Tang Z F, Yin X B, et al. Study on isothermal evaporation of salt lake brine in Lop nur region[J]. Industrial Minerals & Processing, 2008, 37(11): 5-8.
6	张宝全, 刘铸唐, 符廷进, 等. 东台吉乃尔盐湖卤水的相化学研究(Ⅱ): 冬夏季卤水蒸发实验[J]. 盐湖研究, 1994, 2(3): 27-34.
	Zhang B Q, Liu Z T, Fu T J, et al. Study of the phase chemistry of Dongtaijinaier salt lake brine(Ⅱ): Solar evaporation in summer and winter[J]. Journal of Salt Lake Research, 1994, 2(3): 27-34.
7	李陇岗, 曾英, 杨建元, 等. 东台吉乃尔盐湖冬季卤水25℃等温蒸发实验[J]. 盐业与化工, 2013, 42(6): 21-24.
	Li L G, Zeng Y, Yang J Y, et al. 25℃-isothermal evaporation experiment on winter brine from Dongtaijinaier salt lake[J]. Journal of Salt and Chemical Industry, 2013, 42(6): 21-24.
8	郭爱武, 李吉生, 王菊香, 等. 西台吉乃尔盐湖卤水自然蒸发试验研究[J]. 盐湖研究, 2009, 17(3): 29-31.
	Guo A W, Li J S, Wang J X, et al. Study on natural evaporation of brine in west Taijinar salt lakes[J]. Journal of Salt Lake Research, 2009, 17(3): 29-31.
9	杨春节, 张大义, 汪全义, 等. 一里坪盐湖冬季卤水自然蒸发试验研究[J]. 化工矿物与加工, 2014, 43(12): 29-31.
	Yang C J, Zhang D Y, Wang Q Y, et al. Study on natural evaporation of brine in Yiliping salt lake in winter[J]. Industrial Minerals & Processing, 2014, 43(12): 29-31.
10	王长青, 宋彭生. 硫酸盐型盐湖卤水天然制取软钾镁矾[J]. 应用化学, 1991, 8(1): 28-32.
	Wang C Q, Song P S. Preparation of schoenite from brine by natural evaporation[J]. Chinese Journal of Applied Chemistry, 1991, 8(1): 28-32.
11	李刚, 吴景泉. 利用盐田钾镁混盐矿制取软钾镁矾的研究[J]. 盐湖研究, 1998, 6(2/3): 49-52.
	Li G, Wu J Q. Study on the separation of picromerite from the mixture of potassium and magnesium produced from salar ponds[J]. Journal of Salt Lake Research, 1998, 6(2/3): 49-52.
12	程怀德, 马海州. 利用硫酸盐型盐湖资源制取软钾镁矾的研究[J]. 盐业与化工, 2008, 37(3): 24-26.
	Cheng H D, Ma H Z. Study of preparing schoenite from sulfate-type saline resources[J]. Journal of Salt and Chemical Industry, 2008, 37(3): 24-26.
13	李陇岗, 曾英, 杨建元, 等. 钾镁混盐“反浮选-转化法”制取软钾镁矾的研究[J]. 盐业与化工, 2012, 41(11): 11-14.
	Li L G, Zeng Y, Yang J Y, et al. Study on the preparation of schoenite from K-Mg mixing salt with reverse flotation and convention method[J]. Journal of Salt and Chemical Industry, 2012, 41(11): 11-14.
14	Hof van't. Investigation of the Formation Conditions of the Oceanic Salt Deposits, in Particular the Stassfurt Salt Deposit[M]. Leipzig: Academic Publishing Company mbH, 1912.
15	Kurnakov N S, Nikolaev A V. Solar evaporation of seawater and lake brines[J]. Izv. Inst. Fiz.-Khim. Analiza Akad. Nauk SSSR, 1938(10): 37-40.
16	Danilov V P. Studies of Kurnakov's school of thought on the chemistry and technology of natural salts[J]. Russian Journal of Inorganic Chemistry, 2010, 55(11): 1694-1702.
17	金作美, 肖显志, 梁式梅. (Na⁺、K⁺、Mg²⁺), (Cl^-、 S O 4 2 - ), H₂O五元系统介稳平衡的研究[J]. 化学学报, 1980, 38(4): 313-321.
	Jin Z M, Xiao X Z, Liang S M. Study of the metastable equilibrium for pentanary system of (Na⁺, K⁺, Mg²⁺), (Cl^-, S O 4 2 - ), H₂O[J]. Acta Chimica Sinica, 1980, 38(4): 313-321.
18	金作美, 周惠南, 王励生. Na⁺, K⁺, Mg²⁺//Cl^-, S O 4 2 - -H₂O五元体系35℃介稳相图研究[J]. 高等学校化学学报, 2001, 22(4): 634-638.
	Jin Z M, Zhou H N, Wang L S. Studies on the metastable phase equilibrium of Na⁺, K⁺, Mg²⁺//Cl^-, S O 4 2 - -H₂O quinary system at 35℃[J]. Chemical Research in Chinese Universities, 2001, 22(4): 634-638.
19	金作美, 周惠南, 王励生.Na⁺, K⁺, Mg²⁺//Cl^-, S O 4 2 - -H₂O五元体系15℃介稳相图研究[J]. 高等学校化学学报, 2002, 23(4): 690-694.
	Jin Z M, Zhou H N, Wang L S. Studies on the metastable phase equilibrium of Na⁺, K⁺, Mg²⁺//Cl^-, S O 4 2 - -H₂O quinary system at 15℃[J]. Chemical Research in Chinese Universities, 2002, 23(4): 690-694.
20	安东, 张志宏, 付振海, 等. 硫酸盐型卤水蒸发过程钾盐镁矾结晶区域研究[J]. 无机盐工业, 2015, 47(8): 49-52.
	An D, Zhang Z H, Fu Z H, et al. Crystallizing region of kainite in sulfate-type brine evaporation process[J]. Inorganic Chemicals Industry, 2015, 47(8): 49-52.
21	Choudhari B P. Deposition of primary kainite from marine bitterns in solar evaporation[J]. Journal of Applied Chemistry and Biotechnology, 2007, 21(9): 266-267.
22	Steiger M, Voigt W. Solid-liquid metastable equilibria for solar evaporation of brines and solubility determination: a critical discussion[J]. Journal of Solution Chemistry, 2019, 48(7): 1009-1024.
23	Autenrieth H. The stable and metastable equilibria of the reciprocal salt pair 2KCl + MgSO₄ = K₂SO₄ + MgCl₂ without and with NaCl as sediment and their application in practice[J]. Potash Rock Salt, 1954, 1(7): 3-22.
24	Autenrieth H. Investigations in the six-component system K⁺, Na⁺, Mg²⁺, Ca²⁺// S O 4 2 - , (Cl^-)-H₂O with conclusions for the processing of potash salts[J]. Potash Rock Salt, 1958, 2(6): 181-200.
25	Autenrieth H. On the occurrence and importance of metastable solution equilibria in the processing of potash crude salts[J]. Potash Rock Salt, 1969, 5: 158-165.
26	Autenrieth H, Braune G. The six-component system K⁺, Na⁺, Mg²⁺, Ca²⁺// S O 4 2 - , (Cl^-)-H₂O at 90°C and its application to sludge problems in potash crude salt processing[J]. Potash Rock Salt, 1959, 2: 395-405.
27	Autenrieth H, Braune G. The solution equilibria of the reciprocal salt pair 2NaCl + MgSO₄+ H₂O at saturation with NaCl with special consideration of the metastable region[J]. Potash Rock Salt, 1960, 3: 15-30.
28	Zhou H, Zhang H L, Chen Y D, et al. Salt-forming regions of the Na⁺, Mg²⁺//Cl^-, S O 4 2 - -H₂O system at 348.15 K in the nonequilibrium state of isothermal boiling evaporation[J]. Journal of Chemical & Engineering Data, 2012, 57(3): 943-951.
29	Zhou H, Zhang J B, Zhang H L, et al.Salt-forming regions of Na⁺, Mg²⁺//Cl^-, S O 4 2 - -H₂O system at 373.15 K in the nonequilibrium state of isothermal boiling evaporation[J]. Journal of Chemical & Engineering Data, 2012, 57(4): 1192-1202.
30	Zhou H, Bao Y J, Bai X Q, et al. Salt-forming regions of seawater type solution in the evaporation and fractional crystallization process[J]. Fluid Phase Equilibria, 2014, 362: 281-287.
31	海擎宇. 硫酸镁亚型盐湖卤水体系下镁钾硫酸盐形成矿物学研究[D]. 西宁: 中国科学院大学(中国科学院青海盐湖研究所), 2018.
	Hai Q Y. Mineralogical study on the formation of Mg-K sulfate minerals in salt lake brine system of magnesium sulfate subtype[D]. Xining: Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, 2018.
32	时历杰, 王敏. 一里坪硫酸镁亚型盐湖钾镁混盐转化-浮选中物相行为[J]. 化工学报, 2019, 70(5): 1832-1841.
	Shi L J, Wang M. Phase behavior of K-Mg mixed salt during transformation-flotation from Yiliping magnesium sulfate-type salt lake[J]. CIESC Journal, 2019, 70(5): 1832-1841.
33	中国科学院青海盐湖研究所分析室. 卤水和盐的分析方法[M]. 2版. 北京: 科学出版社, 1988.
	Qinghai Institute of Salt Lakes, Chinese Academy of Sciences.Analysis Methods for Brines and Salts[M]. 2nd ed. Beijing: Science Press, 1988.
34	Zhou H, Gu X L, Dai Y P, et al. Thermodynamic modeling and phase diagram prediction of salt lake brine systems (Ⅰ): Aqueous Mg²⁺-Ca²⁺-Cl^- binary and ternary systems[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2391-2408.
35	Zhou H, Wu P, Li W X, et al. Thermodynamic modeling and phase diagram prediction of salt lake brine systems (Ⅱ): Aqueous Li⁺-Na⁺-K⁺- S O 4 2 - and its subsystems[J]. Chinese Journal of Chemical Engineering, 2021, 34: 134-149.

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