How is the cupola lead smelting furnace smelted?
The lead smelting furnace is an indispensable equipment for smelting lead, also known as cupola. After the lead-acid battery is disassembled, the lead in it is smelted to form refined lead. Its workflow is as follows:
1. First put a certain amount of foundry coke into the furnace as bottom coke.
2. After ignition, add the bottom coke to the specified height, from the tuyere to the top surface of the bottom coke is the bottom coke height, and then according to the melting rate of the furnace, put the prepared limestone, metal charge and layer coke in batches from the feeding port in order. join in.
3. At this time, the air in the blast furnace undergoes a combustion reaction with the bottom coke, and the generated high-temperature furnace gas flows upward to heat the charge and melt the first batch of metal charge on the top surface of the bottom coke, and the molten iron droplets fall to the ground. During the process of the hearth, it is further heated by the high temperature furnace gas and the hot coke, a process called superheating.
4. The lead smelting furnace carries out three important processes of bottom coke combustion, heat transfer and metallurgical reaction at the same time. According to the different physical and chemical reactions, the lead smelting furnace takes the combustion area as the core and is divided into:
5. Preheating zone, melting zone, reducing zone, oxidation zone and hearth etc. Due to the effect of furnace gas, coke and slag, the molten metal composition also changes to a certain extent. Among the five major elements in lead smelting, carbon and sulfur generally increase, silicon and manganese generally burn out, and phosphorus does not change much. .
The above is the cupola lead smelting process, which plays a vital role in the lead-acid battery recycling process. SUNY GROUP has rich experience and technical equipment in solid waste recycling, especially the dismantling and refining of lead-acid batteries. At present, our cooperative customers include India, Vietnam, South Korea, Japan and other places. If you need or want to consult Feel free to contact us anytime.
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