一里坪盐湖夏季卤水25 ℃等温蒸发

doi:10.19964/j.issn.1006-4990.2021-0031

Abstract

Abstract:

The isothermal evaporation experiment of the summer brine of Yiliping salt lake was investigated at 25 ℃ accord-ing to the main chemical compositons,climatic characteristics and metastable phase diagram of Na⁺,K⁺,Mg²⁺//Cl^-,SO₄^2-—H₂O at 25 ℃.The results showed that the crystallized stages in sequence were halite stage,potassium mixed salt stage,carnal-lite stage and bischofite stage.Lithium and boron were enriched in the liquid.The result was agreed well with the metastable phase diagram.The results could be used as basis for control of salt field.Comparison between salt field technology of Acatama salt lake and Yiliping salt lake was taken,the difference of the composition was analyzed.Comprehensive utilization of Ataca-ma salt lake resources could provide reference for the development of Yiliping salt lake resources.

Key words: Yiliping salt lake, summer brine, isothermal evaporation, lithium, boron

CLC Number:

TQ028.61

Tang Faman, Yang Hongjun, Zhang Shengpeng, Wang Min. Isothermal evaporation of summer brine of Yiliping salt lake at 25 ℃[J]. Inorganic Chemicals Industry, 2021, 53(10): 52-58.

Figures/Tables 11

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References 31

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化学组成	质量分数/%	含量/ （g·L^-1）	化学组成	质量分数/%	含量/ （g·L^-1）
Li⁺	0.023	0.28	Mg²⁺	2.28	27.91
Na⁺	6.12	75.05	Cl^-	15.83	194.14
K⁺	1.11	13.59	SO₄^2-	1.85	22.74

编号	密度/ （g·cm^-3）	ρ（化学成分）/（g·L^-1）							液相组成,J/（10^-2 mol·mol^-1）			共存固相
编号	密度/ （g·cm^-3）	Li⁺	Na⁺	K⁺	Mg²⁺	Cl^-	SO₄^2-	B₂O₃	2K⁺	Mg²⁺	SO₄^2-	共存固相
L₀	1.226 6	0.28	75.05	13.59	27.91	194.14	22.74	0.38	11.15	73.66	15.19	—
L₁	1.226 8	0.39	65.78	16.48	34.47	199.00	27.01	0.52	11.03	74.25	14.72	Ha
L₂	1.236 2	0.49	60.02	18.49	39.34	204.89	29.40	0.65	10.94	74.90	14.16	Ha
L₃	1.245 9	0.76	42.29	22.25	48.42	206.80	32.17	1.01	10.90	76.28	12.82	Ha
L₄	1.265 2	0.83	27.45	27.57	60.76	218.41	41.21	1.10	10.74	76.19	13.07	Ha
L₅	1.274 7	1.04	13.00	30.61	74.28	232.96	49.91	1.38	9.87	77.03	13.10	Ha+Sy+Eps
L₆	1.279 4	1.07	12.92	28.19	80.68	235.13	58.89	1.42	8.40	77.32	14.28	Ha+Sy+Eps+Kai
L₇	1.288 9	1.18	10.21	22.44	83.96	241.18	52.69	1.57	6.69	80.52	12.79	Ha+Sy+Eps+Kai+Hex
L₈	1.297 5	1.35	7.69	20.00	96.30	256.57	45.36	1.80	5.45	84.48	10.07	Ha+Eps+Car
L₉	1.309 2	2.05	5.32	9.15	103.05	269.81	40.77	2.73	2.45	88.68	8.88	Ha+Hex+Car
L₁₀	1.314 6	2.32	3.57	2.69	108.42	293.14	39.56	3.09	0.70	90.91	8.39	Ha+Car+Pen+Bis
L₁₁	1.346 6	2.37	1.65	0.75	120.37	324.77	28.71	3.15	0.18	94.14	5.68	Ha+Tet+Bis

编号	化学组成							矿物组成
编号	w （Li⁺）	w （Na⁺）	w （K⁺）	w （Mg²⁺）	w （Cl^-）	w （SO₄^2-）	w （B₂O₃）	w （Ha）	w （Sy）	w （Eps）	w （Kai）	w （Hex）	w （Car）	w （Pen）	w （Tet）	w （Bis）
S₁	—	36.60	0.23	0.39	57.13	0.88	—	93.03	—	—	—	—	—	—	—	—
S₂	—	34.57	0.74	0.81	55.99	0.48	—	87.88	—	—	—	—	—	—	—	—
S₃	—	32.59	0.42	1.19	53.33	1.06	—	82.85	—	—	—	—	—	—	—	—
S₄	—	34.54	0.51	1.02	56.04	0.90	0.001	87.81	—	—	—	—	—	—	—	—
S₅	0.001	27.35	1.84	2.39	43.75	9.20	0.001	69.59	3.51	22.50	—	—	—	—	—	—
S₆	0.003	11.14	10.18	4.87	30.76	20.01	0.002	28.32	17.66	43.46	6.01	—	—	—	—	—
S₇	0.003	8.66	9.89	5.54	23.01	21.54	0.001	22.01	18.86	48.30	5.16	2.33	—	—	—	—
S₈	0.005	7.85	6.53	7.57	30.88	12.11	0.003	19.94	—	30.92	—	—	45.71	—	—	—
S₉	0.009	6.70	7.09	7.02	29.55	10.34	0.002	17.00	—	—	—	24.57	50.64	—	—	—
S₁₀	0.017	0.72	1.27	9.24	28.26	2.03	0.007	1.84	—	—	—	—	9.07	4.34	—	74.05
S₁₁	0.031	0.15	0.53	11.37	33.14	1.51	0.026	0.37	—	—	—	—	—	—	3.12	93.22

名称	相对密度	w（K⁺）/ %	w（Mg²⁺）/ %	w（SO₄^2-）/%	w（Cl^-）/ %	w（Na⁺）/ %
W₁	1.252±0.005	1.90	4.11	3.35	15.93	3.05
W₂	1.272±0.005	2.40	5.10	3.65	17.01	1.72
W₃	1.278±0.005	1.83	5.65	3.40	17.70	1.35
W₄	1.340±0.005	0.06	8.94	2.13	24.12	0.12

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Isothermal evaporation of summer brine of Yiliping salt lake at 25 ℃

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