Upgrade the furnace model to update the magnesium reduction furnace

The reduction process of metallic magnesium is an endothermic chemical reaction. Since the entire smelting process must be completed in a vacuum, the charge can only receive indirect radiation from the reduction tank, so the entire smelting process proceeds very slowly. The flame-type reduction furnace burns raw coal and has a service life of up to 50 years, but it consumes a lot, emits a lot of exhaust gas, and has harsh operating conditions. The combustion process cannot be automatically controlled. In particular, the furnace temperature difference is large, the smelting quality is unstable, and the life of the reduction tank and the furnace body is very short, which is a typical backward equipment.

In recent years, many metal magnesium reduction furnaces have been changed to burn coal gas, which coincides with the maturity of advanced regenerative coal gas combustion technology. A group of professional industrial furnace companies, such as Walker, Hengtuo, and Aolin Baichuan, apply this technology successfully applied in iron and steel enterprises to the metal magnesium reduction furnace. The reduction furnace is equipped with a regenerative burner. The temperature of the air and gas entering the furnace is increased to 1000°C, and the temperature of the exhaust combustion gas is reduced to 150°C. Therefore, fuel consumption is reduced by half and flue gas emissions are also reduced by half.

Equipment upgrades have driven the improvement of automation. The gas combustion is controlled by a program. The computer simultaneously implements automatic control of multiple items such as furnace temperature, furnace pressure, gas air flow ratio, combustion reversal, and automatic display of multiple parameters such as gas flow, air pressure, gas pressure, automatic alarm, automatic calculation, Automatic recording and automatic printing make the reduction furnace combustion control in place in one step, directly entering the digital age. Equipment upgrades have also driven the update of the furnace model. The traditional inverted flame furnace type uses refractory bricks in the furnace to build many arch coupons, which are used to support the reduction tank. , It is also used to disperse the flame for uniform heating. But the wide, high-speed stream of thermal flames collided head-on with these arch coupons, either the flame was blocked or the arch coupons were burned.