Let's first understand what electrolytic manganese slag is. Electrolytic manganese slag is a filtered acid residue produced by treating manganese ore with sulfuric acid during the production of electrolytic metallic manganese from manganese carbonate ore. It is acidic or weakly alkaline, with a density between 2-3g/cm3 and a particle size of about 50-100 mesh. It belongs to Class II industrial solid waste, among which Mn and Pb are the main pollutants in electrolytic manganese slag. Therefore, before the resource utilization of electrolytic manganese slag, it is necessary to use harmless treatment technology for electrolytic manganese slag.

Electrolytic manganese slag is produced in the pressure filtration process of electrolytic manganese production, which is the product of manganese ore powder soaked in sulfuric acid and then separated into solid and liquid through filtration using a pressure filter. At present, most electrolytic manganese enterprises in China use low-grade manganese ore with a grade of around 12%. One ton of electrolytic manganese produces about 7-11 tons of electrolytic manganese slag. The amount of imported high-grade manganese ore slag is about half of that of low-grade manganese ore.

China has abundant manganese ore resources and is the world's largest producer, consumer, and exporter of electrolytic manganese. There are currently 150 million tons of electrolytic manganese slag. Mainly distributed in Hunan, Guangxi, Chongqing, Guizhou, Hubei, Ningxia, Sichuan and other regions, especially in the "Manganese Triangle" area where the stock is relatively large. In recent years, the harmless treatment and resource utilization of electrolytic manganese slag have become increasingly prominent, and the resource utilization of electrolytic manganese slag has become a hot research topic in recent years.

The commonly used harmless treatment processes for electrolytic manganese slag include sodium carbonate method, sulfuric acid method, oxidation method, and hydrothermal method. Where is electrolytic manganese slag used? At present, China has conducted extensive research on the recovery and resource utilization of electrolytic manganese slag, such as extracting metallic manganese from electrolytic manganese slag, using it as a cement retarder, preparing ceramic bricks, making honeycomb shaped coal fuel, producing manganese fertilizer, and using it as a roadbed material. However, due to poor technical feasibility, limited absorption of electrolytic manganese slag, or high processing costs, it has not been industrialized and promoted.

With the proposal of China's "dual carbon" target and the tightening of environmental policies, the development of the electrolytic manganese industry has been greatly restricted. One of the future development directions of the electrolytic manganese industry is the harmless treatment of electrolytic manganese slag. On the one hand, enterprises need to control pollution and reduce emissions through raw materials and production processes. On the other hand, they should actively promote the harmless treatment of manganese slag and accelerate the resource utilization of manganese slag. The resource utilization of manganese slag and the harmless treatment process of electrolytic manganese slag are important development directions and measures for the electrolytic manganese industry in the present and future, and the market prospects are promising.

Guilin Hongcheng actively innovates and researches in response to market demand, and can provide harmless treatment processes for electrolytic manganese slag for electrolytic manganese enterprises. Welcome to call 0773-3568321 for consultation.