Automatic control method and device for aluminum melting furnace system

Abstract

The invention relates to the field of heat accumulation type aluminum melting furnace systems, in particular to an automatic control method for an aluminum melting furnace system. According to the automatic control method for the aluminum melting furnace system, the current working stage can be judged when combustible gas starts to be supplied, and a combustible gas flow gear corresponding to the current working stage is selected according to system presetting, so that combustible gas is supplied at the corresponding gear, accordingly, combustible gas can be supplied more flexibly and accurately, and system waste is reduced. In addition, the invention provides a device corresponding to the method.

Description

technical field [0001] The invention relates to the field of aluminum melting furnace systems, in particular to an automatic control method and device for the aluminum melting furnace system. Background technique [0002] The regenerative aluminum melting furnace is a new type of high-efficiency and energy-saving aluminum melting furnace. It is generally provided with combustible gas inlets and auxiliary gas inlets on both sides of the furnace body. The combustible gas inlets on both sides and the Combustible gas and supporting gas are alternately sprayed into the furnace through the air inlet for supporting gas. Usually, when one side injects combustible gas and supporting gas into the furnace, the supporting gas inlet on the other side is switched to exhaust gas exhaust port, so that the supporting gas inlet on either side will be Switch between the two working states of passing in the auxiliary gas and exhausting the exhaust gas, so that the heat storage ball installed w...

AI Technical Summary

Problems solved by technology

However, in the aluminum melting furnace in the heat preservation stage, although the furnace temperature is high, the aluminum ingots are basically melted into aluminum water, but the temperature of the aluminum liquid is not high, and the speed of the aluminum liquid absorbing heat is much lower than that of aluminum in the melting stage. Therefore, although the aluminum melting furnace in the heat preservation stage requires a higher furnace temperature and needs to maintain a higher furnace temperature, the actual heat required by the furnace is not much. The same combustion-supporting air flow and gas flow caused the furnace temperature to rise too fast during the heat preservation stage, and the regenerative combustion system stopped after running for a short time. During this process, the heat absorbed by the molten aluminum was not much, and the Part of it is used to heat the temperature in the furnace, and then it is discharged with the exhaust gas, resulting in waste of fuel and empty consumption

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