不同制液工艺对锰矿锰浸出回收及钙镁铁迁移影响

doi:10.11949/0438-1157.20240428

摘要/Abstract

摘要：

针对当前电解金属锰制液工艺锰浸出和回收率低的问题，以制液工艺为研究对象，开展现有工业生产制液工艺（T₁）、阳极液浸洗（T₂）、阳极液浸洗-水洗（T₃）制液工艺模拟实验，研究不同制液工艺对锰矿中锰的浸出和回收以及钙镁铁迁移的影响。结果显示，锰浸出率T₃（92.76%±0.40%）≈T₂（92.14%±0.62%）＞T₁（89.59%±2.43%），锰回收率T₃（91.18%±0.47%）＞T₂（87.02%±0.74%）＞T₁（73.97%±2.37%），表明在现有制液工艺基础上增加阳极液浸洗工序可以有效提高锰矿中锰的浸出率和回收率，增加水洗工序可以进一步提高浸出锰的回收率；在现有制液工艺基础上阳极液浸洗工序不会提高锰矿中钙、镁向液相的迁移比例，但会提高铁的迁移比例，增加水洗工序不会提高锰矿中钙、铁向液相的迁移比例，但会提高镁的迁移比例。

关键词: 阳极液浸洗, 阳极液浸洗-水洗, 锰浸出率, 锰回收率, 钙镁铁迁移

Abstract:

Aiming at the problem of low manganese leaching and recovery in the current electrolytic manganese metal liquid-making process, this paper takes the liquid-making process as the research object, carries out the simulation experiments of the existing industrial production liquid-making process (T₁), anode liquid leaching (T₂), anode liquid leaching-washing (T₃) liquid-making process, and researches the influence of different liquid-making processes on the leaching and recovery of manganese in manganese ores, as well as on the migration of calcium, magnesium and iron. The results showed that the manganese leaching rate was T₃ (92.76%±0.40%)≈T₂ (92.14%±0.62%) > T1 were carried out to study the effects of different liquid preparation processes on the leaching rate and recovery rate of manganese and the migration of calcium, magnesium and iron in manganese (89.59%±2.43%), and the manganese recovery rate was T₃ (91.18%±0.47%) > T₂ (87.02%±0.74%) > T₁ (73.97%±2.37%), indicating that the leaching rate and recovery rate of manganese in manganese ore can be effectively improved by anodic leaching, and the recovery rate of manganese leaching can be effectively improved by washing process. On the basis of the existing liquid production process, the anodic leaching process will not increase the migration proportion of calcium and magnesium in manganese ore to the liquid phase, but will increase the migration proportion of iron, and the addition of the washing process will not increase the migration proportion of calcium and iron in manganese ore to the liquid phase, but will increase the migration proportion of magnesium.

Key words: anodic immersion, anodic immersion-water washing, manganese leaching rate, manganese recovery rate, migration of calcium, magnesium and iron

中图分类号:

TF 792

赵博超, 聂一凡, 王雪婷, 田向勤, 田祎, 潘涔轩. 不同制液工艺对锰矿锰浸出回收及钙镁铁迁移影响[J]. 化工学报, 2024, 75(S1): 292-299.

Bochao ZHAO, Yifan NIE, Xueting WANG, Xiangqin TIAN, Yi TIAN, Cenxuan PAN. Effects of different liquid production processes on manganese leaching and recovery and migration of calcium, magnesium and iron in manganese ore[J]. CIESC Journal, 2024, 75(S1): 292-299.

图/表 9

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制液工艺类型		总锰含量/%（质量）	水溶锰含量/%（质量）
现有工艺	工业生产	6.52±0.14	1.90±0.04
现有工艺	实验模拟工业生产（T₁）	4.09±0.38	2.66±0.26
阳极液浸洗（T₂）		2.53±0.04	1.38±0.06
阳极液浸洗-水洗（T₃）		2.28±0.10	0.41±0.01

制液工艺类型		总锰含量/%（质量）	水溶锰含量/%（质量）
现有工艺	工业生产	6.52±0.14	1.90±0.04
现有工艺	实验模拟工业生产（T₁）	4.09±0.38	2.66±0.26
阳极液浸洗（T₂）		2.53±0.04	1.38±0.06
阳极液浸洗-水洗（T₃）		2.28±0.10	0.41±0.01

制液工艺类型		总锰浸出率/%（质量）	总锰回收率/%（质量）	浸出锰回收率/%（质量）
现有工艺	工业生产	81.23±1.33	71.01±0.71	87.42±0.56
现有工艺	实验模拟工业生产（T₁）	89.59±2.43	73.97±2.37	83.93±1.18
阳极液浸洗（T₂）		92.14±0.62	87.02±0.74	94.44±0.30
阳极液浸洗-水洗（T₃）		92.76±0.40	91.18±0.47	98.30±0.64

制液工艺类型		总锰浸出率/%（质量）	总锰回收率/%（质量）	浸出锰回收率/%（质量）
现有工艺	工业生产	81.23±1.33	71.01±0.71	87.42±0.56
现有工艺	实验模拟工业生产（T₁）	89.59±2.43	73.97±2.37	83.93±1.18
阳极液浸洗（T₂）		92.14±0.62	87.02±0.74	94.44±0.30
阳极液浸洗-水洗（T₃）		92.76±0.40	91.18±0.47	98.30±0.64

制液工艺类型		钙的迁移比例/%			（平均值±标准差）/%	方差分析结果
制液工艺类型		1	2	3	（平均值±标准差）/%	F	P-value	F_crit
现有工艺	工业生产	0.64	-0.69	-0.48	-0.18±0.72	3.62	0.06	4.07
现有工艺	实验模拟工业生产（T₁）	-3.27	-6.23	-6.54	-5.34±1.81
阳极液浸洗（T₂）		-5.88	1.60	-4.00	-2.76±3.89
阳极液浸洗-水洗（T₃）		1.43	-0.11	-1.41	-0.03±1.42