The combustion chamber of a waste incinerator is typically constructed from high-strength refractory materials and high-temperature resistant steel. The combustion chamber needs to withstand prolonged high-temperature combustion; therefore, refractory bricks or high-temperature alloy steel are used to maintain structural strength and effectively prevent cracks caused by thermal expansion, extending the equipment's lifespan. Some units also have an additional heat insulation layer on the combustion chamber surface to improve thermal efficiency and protect the outer shell structure.
The exhaust and flue gas purification systems are usually made of corrosion-resistant metals, such as stainless steel or galvanized steel. Because the flue gas produced during incineration contains acidic gases, dust, and harmful substances, the exhaust system materials must be acid- and corrosion-resistant to prevent premature aging or damage to pipes and purification equipment. Additionally, some dust removal equipment uses wear-resistant materials internally to improve long-term operational stability.
Auxiliary systems and the outer shell are generally made of carbon steel or stainless steel, balancing strength and cost. The exterior of the equipment is also coated with an anti-corrosion coating to protect against rain, moisture, or corrosion during cleaning. For critical components such as door locks, valves, and feed inlets, heat-resistant and wear-resistant alloy materials are typically used to ensure that the equipment maintains reliability and safety under high temperature and continuous operation conditions.