Metals are used as materials for public infrastructure, residences, and household appliances. A melting furnace is necessary for making metals and glass from mineral resources. This typically involves small to medium-sized melting furnaces or bloomeries. Bloomeries are low, angular furnaces made of clay, and they represent a primitive method that has been passed down since ancient times. The priority order for ignition materials is bamboo charcoal first, followed by wood charcoal.
The number of products manufactured by municipalities decreases compared to a monetary society, but since wood charcoal is still used, carbon dioxide is emitted. The total amount emitted depends on how much is used when carried out in various places. Therefore, consideration is given to small to medium-sized electric furnaces as well. If electric furnaces can be operated solely with renewable energy sources in municipalities, they take priority.
In this way, iron, copper, aluminum, glass, and other materials are produced. Residents produce only what they need, and metal recycling is also carried out here. Due to the handling of high temperatures, if feasible as a facility, the heat released into the atmosphere can be stored in sand batteries or used for tasks such as bamboo oil extraction.
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