The pressure control method in the refining furnace with single blower and multiple ducts

Abstract

The invention discloses a refining furnace with a single draught fan and multiple air ways and aims at providing the refining furnace with the single draught fan and the multiple air ways. The refining furnace with the single draught fan and the multiple air ways can accurately control the pressure in a combustion furnace and the pressure in reverberatory furnaces. According to the technical scheme, the refining furnace is characterized by comprising the combustion furnace and the multiple reverberatory furnaces arranged on the side face of the combustion furnace; the combustion furnace is connected with a main channel, and an auxiliary channel is arranged between the main channel and the upper portion of each reverberatory furnace; the main channel communicates with an air extracting assembly; the auxiliary channels are internally provided with valve assemblies arranged in the auxiliary channels in a matched manner; each valve assembly comprises a gate rotationally connected to one side of the corresponding auxiliary channel, and a swing wheel arranged on the other side of the corresponding auxiliary channel; the valve assemblies include at least two gates rotationally connected in the auxiliary channels; the combustion furnace and the reverberatory furnaces are internally provided with multiple pressure detection assemblies; and the valve assemblies and the air extracting assembly are connected with a control assembly which controls the valve assemblies and the air extracting assembly to run to maintain the pressure in the combustion furnace and the pressure in the reverberatory furnaces within the set range.

Description

technical field [0001] The invention relates to the field of metallurgical industry, in particular to a refining furnace with single fan and multiple air passages. Background technique [0002] Copper is a raw material of great strategic significance in the construction of the national economy, and the regeneration performance of copper is better than other metals, so scrap copper has become an important source of raw materials in the production of copper industry. The waste miscellaneous copper smelting process is to produce qualified anode plates after smelting waste miscellaneous copper raw materials; it mainly includes four processes of melting, oxidation, reduction and casting. In order to improve the quality of the anode plate, the furnace negative pressure must be strictly controlled during the smelting process. [0003] The waste miscellaneous copper smelting process generally adopts a refining furnace, which includes a combustion furnace arranged in the middle and ...

AI Technical Summary

Problems solved by technology

At present, most of the negative pressure control of scrap copper smelting has no practical and effective control strategy. Generally, multiple induced draft fans are installed and the speed of the induced draft fan is increased to ensure that the furnace body does not "spray fire". As a result, on the one hand, the quality of the anode plates produced cannot be guaranteed; on the other hand, it also increases the energy consumption in the production process and increases the production cost

Images