Heat storage type vertical metal magnesium reducing furnace

Abstract

This invention relates to a Mg recovery furnace with a vertical recovery tank composed of a hearth, a roof, a wall, burners, a recovery tank, bottom storage chambers and a fan charactering in arranging several pairs of double-storage burners along the bottom of two ends on the furnace width direction, forming storage chamber1 and 2 on the bottom of the two ends, installing two directional valves at either end, the directional valves, the storage chamber 1 and 2 and the fan are connected with a directional control system by exterior pipelines, applying a vertical mode to arrange the recovery tank in the hearth and feeding from the top and discharging from the bottom, which costs less energy, temperature in the furnace is the uniform and burning mode is exclusive.

Description

technical field [0001] The invention relates to a metal magnesium reduction furnace, in particular to a regenerative vertical metal magnesium reduction furnace with a vertical reduction tank. Background technique [0002] The traditional metal magnesium reduction furnace generally adopts the structure of returning heat to heat the reduction tank. The flame and flue gas in the reduction furnace of this traditional structure enter the furnace through the fire retaining wall, pass through the reduction tank from top to bottom, and quickly pass through the fire suction hole. Exhausted from the furnace, the exhaust gas temperature is as high as about 1200 ° C, which cannot be recycled well, and the energy waste is serious. In addition, the traditional metal magnesium reduction furnace uses raw coal as fuel, which has low combustion efficiency and serious pollution. Moreover, this combustion method leads to uneven temperature in the furnace chamber of the metal magnesium reduction...

AI Technical Summary

Problems solved by technology

[0002] The traditional metal magnesium reduction furnace generally adopts the structure of returning heat to heat the reduction tank. The flame and flue gas in the reduction furnace of this traditional structure enter the furnace through the fire retaining wall, pass through the reduction tank from top to bottom, and quickly pass through the fire suction hole. Exhausted from the furnace, the exhaust gas temperature is as high as about 1200°C, which cannot be recycled well, and the energy waste is serious

In addition, the traditional metal magnesium reduction furnace uses raw coal as fuel, which has low combustion efficiency and serious pollution. Moreover, this combustion method leads to uneven temperature in the furnace chamber of the metal magnesium reduction furnace, and inflexible control of the combustion temperature, resulting in a short service life of the reduction tank. The quality of finished magnesium metal produced is not high

[0003] The existing magnesium reduction furnace has a large useless space in the furnace, and the supporting wall of the reduction tank occupies a large space, which affects heat conduction; It is easy to deform under high temperature and high vacuum conditions, which hinders loading and unloading, and ultimately affects the service life: horizontal filling makes it difficult to pack the material, and often occurs that the filling is not solid and affects the uniformity of heating, thereby affecting the uniformity of the reaction; During the magnesium smelting process, the upper part of the reduction tank is easy to accumulate dust, which is serious for a long time and affects heat conduction; the heating of the reduction furnace mainly uses coal or producer gas for direct combustion, and there is no dust removal facility; the gas uses a simple burner with low technical content. Insufficient combustion produces a large amount of harmful gas and industrial dust, polluting the environment

When loading, workers use long rods to push in the reaction materials, and when discharging, they use long rods to take out the materials bit by bit. The loading and unloading of materials is carried out at the end of the reduction tank. The operation time is long, the environment is harsh, and the labor intensity is high. Concentration of personnel, prone to safety accidents

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