Treatment of sulfur-containing coal gangue and technical method of sulfur and iron separation

Most of Shanxi's coal resources contain pyrite, which is called coal-series pyrite. In the process of coal washing, coal gangue and pyrite are washed out and discarded as waste. However, due to the accuracy of coal washing jig, coal gangue is mixed with a large amount of pyrite, so the storage of coal gangue is not only a problem of occupying land, but also has a strong destructive effect on land and environment. Therefore, many environmentalists oppose the storage and random dumping of coal gangue.

In fact, considering the problem from another angle, environmental pollution is mainly due to pyrite in coal gangue. So can pyrite be sold as a product for profit? The answer is absolutely yes, especially now that the market demand for pyrite continues to rise, selling pyrite can achieve ideal economic benefits. Therefore, recovering pyrite from coal gangue can be regarded as the first step to profit from abandoned coal gangue.

The specific gravity of pyrite is 4.9-5.2, while the specific gravity of coal gangue is generally not higher than 3.0, and the disseminated particle size of pyrite in coal measures is coarse, all of which are dense crystals. After crushing, the coal gangue and pyrite monomer have a high degree of dissociation. Through the separation function of mine diaphragm jig, pyrite can be well recovered from coal gangue, and the grade of pyrite can reach a high level, while the cost and equipment investment of gravity separation are very limited, so pyrite can be recovered from coal gangue.

Let's talk about the coal gangue recovered from pyrite. After recovering pyrite, coal gangue has basically broken into small pieces. After removing excess water, dewatering screen can be sold to power plants as fuel, and can also be used as high-quality materials for brick making in brick factories. In any case, it is profitable, so that all coal gangue can be recycled and considerable economic benefits have been achieved. It's killing two birds with one stone. So why dump coal gangue as a rich mine at will? Hehe, knowing the way of coal gangue recycling, it is estimated that everyone is not willing to waste resources like this again.