双重兑卤法生产低钠光卤石工艺研究

doi:10.19964/j.issn.1006-4990.2020-0577

Abstract

Abstract:

In allusion to the problems of long production cycle,high sodium chloride content of products and environmental pollution of reaction waste liquid in carnallite production from salt lake brine,the study of the low-sodium carnallite production was carried out by double brine mixing method based on the theory of the Na⁺,K⁺,Mg²⁺//Cl^-—H₂O quaternary system phase diagram.The highly efficient and fast production of carnallite could be achieved by controlling the ratios of brine mixing and the aging time.The research results showed that in the first brine mixing experiment,when the mass ratio of potassium saturated brine to old brine was 1∶1.8 and the aging time was 4 h,the removal rate of sodium ion was 59.30% and the loss rate of potassium ion was 9.58% in solution.In the second brine mixing experiment,when the mass ratio of potassium-rich brine to old brine was 1∶1.7 and the aging time was 3.5 h,the yields of potassium ion and sodium ion were 62.69% and 8.55% in solution,meanwhile,the contents of carnallite and sodium chloride accounted for 96.96% and 3.04% in the precipitated solid from solution.In addition,the whole experiment process did not need to add the flotation chemicals.This method has the advantages of short production cycle,excellent product quality and environmental friendly,which provides different ideas for the production of carnallite in salt lakes.

Key words: salt lake brine, brine mixing, low-sodium carnallite, potassium chloride

CLC Number:

TQ131.13

Xiong Jiaqing,Zhang Yu,Zhu Junguo. Study on process of producing low-sodium carhalite by double brine mixing method[J]. Inorganic Chemicals Industry, 2021, 53(8): 44-49.

Figures/Tables 16

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References 14

[1]	周园, 李丽娟, 吴志坚, 等. 青海盐湖资源开发及综合利用[J]. 化学进展, 2013, 25(10):1613-1624. doi: 10.7536/PC121234
[2]	商照聪, 刘刚, 包剑. 我国钾资源开发技术进展与展望[J]. 化肥工业, 2012, 39(4):5-8,49.
[3]	李晋斌, 沙作良, 王彦飞. 利用钾混盐制备光卤石的研究[J]. 无机盐工业, 2013, 45(8):18-20.
[4]	马光明, 李伟, 杨荣. 兑卤法制备氯化钾工艺原理及关键控制[J]. 盐业与化工, 2012, 41(10):30-32.
[5]	张文明, 张正霞, 石春江. 用盐湖卤水生产氯化钾反浮选冷结晶工艺流程[J]. 化工管理, 2019(14):200.
[6]	叶秀深, 权朝明, 张慧芳, 等. 氯化钠、氯化钾、光卤石对十二烷基吗啉的吸附行为及机理[J]. 无机盐工业, 2018, 50(5):21-24.
[7]	张义勇, 史忠录, 赵玮, 等. 察尔汗盐湖钾肥的生产工艺比较[J]. 盐业与化工, 2012, 41(1):26-28.
[8]	王永梅, 李春丽, 刘亮梅. 察尔汗盐湖盐田工艺相图分析及计算[J]. 无机盐工业, 2016, 48(2):26-29.
[9]	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]. 北京: 科学出版社, 1988:33-64.
[10]	邓天龙, 周桓, 陈侠. 水盐体系相图及应用[M]. 北京: 化学工业出版社, 2013:127-158.
[11]	刘海明. 玻利维亚科伊帕萨盐湖综合利用途径研究[D]. 成都理工大学, 2012.
[12]	张生太, 张振杰, 李燕, 等. 兑卤法制备氯化钾收率影响分析与控制[J]. 盐业与化工, 2014, 43(10):23-25.
[13]	欧阳传亮. 严格把控“兑卤”工艺,优化光卤石质量[J]. 化工管理, 2017(20):40.
[14]	史忠录, 杜佩英, 李生廷, 等. 兑卤法生产氯化钾中再浆洗涤的分析与应用[J]. 盐科学与化工, 2017, 46(5):35-37.

原料	w（KCl）	w（NaCl）	w（MgCl₂）	w（H₂O）
钾饱和卤水	8.00	11.55	9.70	70.75
老卤	0.10	0.35	35.40	64.15

原料	ρ（K⁺）	ρ（Na⁺）	ρ（Mg²⁺）	ρ（Cl^-）
钾饱和卤水	51.73	56.02	30.53	222.55
老卤	0.70	1.84	120.64	355.36

m_D∶m_F	ρ（Na⁺）/（g·L^-1）	ρ（K⁺）/（g·L^-1）	ρ（Mg²⁺）/（g·L^-1）	ρ（Cl^-）/（g·L^-1）
1∶1.3	15.82	23.44	80.18	283.66
1∶1.4	14.17	22.32	80.95	284.54
1∶1.5	12.48	21.34	81.77	285.12
1∶1.6	11.12	20.32	83.18	286.38
1∶1.7	10.09	19.20	84.63	287.57
1∶1.8	9.03	17.96	85.70	288.17
1∶1.9	8.48	16.66	86.43	288.80
1∶2.0	8.09	15.43	87.29	289.25
1∶2.1	7.75	14.58	88.39	289.79
1∶2.2	7.37	14.01	88.97	290.20
1∶2.3	7.11	13.31	89.36	290.64

陈化时间/h	ρ（Na⁺）/ （g·L^-1）	ρ（K⁺）/ （g·L^-1）	ρ（Mg²⁺）/ （g·L^-1）	ρ（Cl^-）/ （g·L^-1）
0.00	22.27	19.95	86.90	305.30
0.17	11.47	19.17	86.71	295.70
0.37	10.93	18.86	86.62	294.58
0.67	10.21	18.40	86.41	292.56
2.00	9.68	18.28	86.18	291.94
3.00	9.23	18.06	85.95	288.58
4.00	9.03	17.96	85.70	288.16
5.00	8.98	17.90	85.65	287.75
10.00	8.93	17.81	85.55	287.07
17.00	8.91	17.74	85.41	286.57

m_E∶m_F	ρ（K⁺）/（g·L^-1）	ρ（Na⁺）/（g·L^-1）	ρ（Mg²⁺）/（g·L^-1）	ρ（Cl^-）/（g·L^-1）
1∶1.2	3.84	4.87	101.29	301.41
1∶1.3	3.49	4.73	101.52	302.18
1∶1.4	3.21	4.57	102.10	303.45
1∶1.5	2.99	4.43	102.71	305.26
1∶1.6	2.82	4.31	103.37	307.57
1∶1.7	2.68	4.20	103.99	309.88
1∶1.8	2.58	4.03	104.84	310.66
1∶1.9	2.49	3.90	105.66	313.74
1∶2.0	2.41	3.79	106.12	315.42
1∶2.1	2.32	3.71	106.36	317.10
1∶2.2	2.25	3.60	106.60	319.21

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on process of producing low-sodium carhalite by double brine mixing method

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陈化时间/h	ρ（K⁺）/ （g·L^-1）	ρ（Na⁺）/ （g·L^-1）	ρ（Mg²⁺）/ （g·L^-1）	ρ（Cl^-）/ （g·L^-1）
0.00	7.44	4.66	108.44	329.11
0.07	4.32	4.46	106.85	322.52
0.10	4.14	4.47	106.51	320.81
0.17	3.68	4.39	106.22	319.10
0.33	3.43	4.33	105.88	317.68
0.67	3.23	4.25	105.35	314.01
1.33	3.00	4.14	104.97	313.27
2.50	2.82	4.08	104.48	311.43
3.50	2.68	3.97	103.99	309.88
5.00	2.63	3.92	103.75	309.17
9.00	2.59	3.87	103.51	308.47
13.50	2.56	3.82	103.35	307.76

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