Process scheme

The magnesium refining plant chooses the silicon thermal method for magnesium production, which has a simple process, low investment, short construction period, no pollution, and is suitable for the development of small and medium-sized enterprises. Under normal conditions, the production of crude magnesium per 100 kilograms of pellets remains stable at 12-15 kilograms, with a refining recovery rate of over 92%. Analysis of the technical and economic indicators of manufacturers using different fuels shows that there is no significant difference in the service life of reduction tanks between coal-fired and gas-fired reduction furnaces. Under the same conditions of crude magnesium per tank (calculated at 12 kilograms of crude magnesium per tank), the thermal energy cost of gas is 2277 yuan/ton higher than that of coal-fired. In terms of construction investment, the infrastructure investment of gas stations accounts for about 30% of the total investment, and the investment in rotary kilns accounts for about 20% of the total investment of magnesium plants.