Study on Mineral Processing and Recovery Technology of Micro-grained Poor Manganese Ore

The micro-grained poor manganese ore is an important manganese resource with complex mineralogical characteristics, and there is a growing interest in its beneficiation and recovery. Several research studies have been conducted on the mineral processing and recovery technology of micro-grained poor manganese ore. Here are some of the key findings:

1. Multi-stage grinding and multi-stage flotation are effective methods to recover micro-grained poor manganese ore. A study found that the flotation recovery of manganese increased significantly, by up to 35.42%, with the increase of the grinding fineness.

2. Magnetic separation is also an effective method for the recovery of micro-grained poor manganese ore. A study showed that the recovery rate of manganese increased by 24.69% after magnetic separation.

3. Acid leaching is another method used to recover micro-grained poor manganese ore. The leaching process can effectively dissolve manganese from the ore and achieve a higher recovery rate. However, the process can be environmentally damaging and requires careful consideration of the use and disposal of hazardous waste.

4. Hydrometallurgy, particularly the leaching-electrowinning process, has shown promise in recovering manganese from micro-grained poor manganese ore. A study showed that the manganese recovery rate increased from 57.16% to 94.50% after the leaching-electrowinning process was applied.

5. Froth flotation combined with high-gradient magnetic separation (HGMS) and acid leaching has been investigated as a comprehensive beneficiation process for micro-grained poor manganese ore. The process showed high selectivity for manganese and achieved a recovery rate of above 80%.

In conclusion, the beneficiation and recovery of micro-grained poor manganese ore is a challenging task due to its complex mineralogical characteristics. Studies have shown that multi-stage grinding and multi-stage flotation, magnetic separation, acid leaching, hydrometallurgy, and froth flotation combined with HGMS and acid leaching are effective methods for recovering micro-grained poor manganese ore. The choice of the most suitable method depends on the specific ore properties and the desired product quality.

Here's a table summarizing the key findings of the study on mineral processing and recovery technology of micro-grained poor manganese ore:

|Beneficiation Methods|Advantages|Disadvantages|Key Findings|

|---|---|---|---|

|Multi-stage grinding and multi-stage flotation|Effective method to recover manganese|High energy consumption, requires fine grinding|Flotation recovery of manganese increases significantly with the increase of grinding fineness|

|Magnetic separation|Effective method to recover manganese|Low recovery rate, high cost|Recovery rate of manganese increased by 24.69% after magnetic separation|

|Acid leaching|Effective method to dissolve manganese|Environmental pollution, hazardous waste disposal|Leaching process can effectively dissolve manganese from the ore and achieve a higher recovery rate|

|Hydrometallurgy (leaching-electrowinning process)|High recovery rate|Precipitates and other impurities may contaminate the final product|Manganese recovery rate increased from 57.16% to 94.50% after the leaching-electrowinning process|

|Froth flotation combined with high-gradient magnetic separation (HGMS) and acid leaching|High selectivity for manganese|High cost, complex process|Achieved a recovery rate of above 80%|

The above table summarizes the key findings of the study on mineral processing and recovery technology of micro-grained poor manganese ore. The table shows that multi-stage grinding and multi-stage flotation, magnetic separation, acid leaching, hydrometallurgy, and froth flotation combined with HGMS and acid leaching are effective methods to recover manganese from micro-grained poor manganese ore. The choice of the most suitable method depends on various factors, including the specific ore properties, desired product quality, and environmental impact. The table also highlights the advantages and disadvantages of each method.