Industrial electric kiln refers to the heating equipment used in the process of heating, annealing, hardening, sintering, drying, organics removal and other processes to deal with large quantities of materials or large structures. Different types of heating elements are usually used to meet the temperature demand through the radiant heat generated by the resistance. Usually divided by structure, there are roller kiln, rotary kiln, push plate kiln, mesh furnace, trolley furnace and a variety of specially customized furnace.
Gas-fired tunnel kilns and electrically heated tunnel kilns differ significantly in their heating methods and advantages. Gas-fired tunnel kilns are known for their rapid heating capabilities and suitability for high-volume production environments, emphasizing production efficiency. In contrast, electrically heated tunnel kilns excel in precise temperature control and emission-free operation, making them ideal for applications demanding stringent quality and heating accuracy. Electrically heated tunnel kilns also benefit from using lightweight refractory materials, enhancing energy efficiency by reducing power consumption during insulation after reaching set temperatures. They are also easier to operate and maintain. Choosing the right kiln type depends on production needs, energy costs, and environmental considerations.
roller kilns, pusher kilns, and mesh belt kilns are common types of industrial kilns. roller kilns support continuous product operation on rollers, ideal for high-efficiency production of ceramics, bricks, and more. Pusher kilns utilize pusher plates in tunnels for precise temperature control and uniform firing, suitable for processes requiring such control like battery materials and foam ceramics. Mesh belt kilns employ metal mesh belts for product conveyance, widely used in continuous production for foods, chemicals, and metallurgy. Choosing the right kiln type involves considering product characteristics and production requirements to achieve optimal efficiency and product quality.
A tunnel kiln is a continuous firing device typically used for sintering and drying materials such as ceramics, bricks, pottery, gypsum, and asbestos. It is structured as a long and narrow tunnel, lined with refractory bricks or other high-temperature resistant materials to withstand high temperatures and chemical corrosion. Tunnel kilns are typically divided into several zones including pre-heating, firing, and cooling zones, where materials are sequentially heated, sintered, and cooled to complete the required processing. They can be categorized based on structure into pusher kilns, roller kilns, and shuttle kilns.
A rotary kiln typically consists of a feeding device, a furnace, an electrical control cabinet, and a kiln tube. Inside the furnace, there are supporting devices that can hold up the kiln tube. An electric motor drives a large gear to rotate the kiln tube. Materials enter from the feed end via the feeding device and pass through different zones such as the heating zone, calcining zone, and cooling zone to undergo the required processing.
Rotary kilns are widely utilized in industrial processes requiring thermal treatment or calcination of materials, including ceramics, powder particles, and other industrial production processes. They are extensively used in the production of cement, gypsum, lime, ceramics, and similar products. Rotary kilns are also employed in waste management and environmental industries for resource recovery.
A large rotary kiln is a heavy-duty industrial equipment typically used for the thermal processing, drying, or calcination of materials. It features a long cylindrical structure with one or more internal support devices, driven to rotate by an electric motor. The interior of the rotary kiln is typically divided into multiple zones, including material loading, heating, calcining, and cooling zones, where materials undergo various treatment processes. This equipment finds wide applications in industries such as cement production, metallurgy, chemical engineering, and environmental protection.