The direct rotary drum calcination equipment requires a large amount of air, resulting in high discharge pressure. In addition, the existing direct rotary drum calcination equipment often suffers from incomplete or excessive calcination; And the existing rotary drum calcination system uses two temperatures of hot air (inlet temperature and outlet temperature) to control the calcination quality, making it difficult to control and adjust the product calcination quality; The existing rotary drum calcination system carries a large amount of heat in the exhaust gas, resulting in high energy consumption of the equipment; In existing technological equipment, the thickness of the material layer inside the cylinder is thick and uneven, resulting in uneven calcination effect.

Indirect rotary drum calcination equipment, comprising a base, a rotary cylinder body, a supporting wheel device for supporting the rotary cylinder body, and a gear transmission device for driving the rotary cylinder body to rotate. The base is equipped with a combustion chamber seat, and the combustion chamber seat is equipped with a combustion cover. The combustion chamber cover is provided with a flue gas outlet, and the combustion chamber cover and the combustion chamber seat surround the combustion chamber. Multiple combustion zones are sequentially set in the combustion chamber from right to left. The combustion chamber seat corresponds to each combustion zone, and a burner installation station is installed in the burner installation station for heating the rotary cylinder body. Through holes are opened on both sides of the combustion chamber cover, and the two ends of the rotary cylinder body pass through the corresponding through holes. The structural arrangement of this utility model is reasonable.

Very little air emissions and low environmental requirements; Easy control and adjustment of product calcination quality; The product is evenly calcined and of good quality. The left end of the rotary cylinder is equipped with a discharge cover through the frame, and the left end of the rotary cylinder is connected to the discharge cover in a rotating manner. The lower end of the discharge cover extends with a discharge channel.

The supporting wheel mechanism includes a supporting wheel support fixed on the base and a supporting wheel, which is rotatably installed on the supporting wheel support,

The outer wall of the rotary cylinder is fixedly installed with a wheel rim for placement on the supporting wheel, and the two end faces of the supporting wheel also extend with limit retaining rings for limiting the wheel rim.

The gear transmission device comprises a gear support and a driving gear rotatably mounted on the gear support. The outer wall of the rotary cylinder is fixedly mounted with a rotary gear for meshing with the driving gear, and the shaft end of the driving gear is connected to the rotary driving mechanism.

The rotary drive mechanism includes a drive motor and a rotary reducer installed on the base. The output end of the drive motor is connected to the input end of the rotary reducer, and the output end of the rotary reducer is connected to the shaft end of the drive gear through a transmission mechanism. The drive motor adopts frequency conversion control, which can achieve the adjustment and control of material calcination time.

The transmission mechanism includes a first sprocket installed at the output end of the rotary reducer, a second sprocket installed at the drive gear shaft end, and a transmission chain fitted on the first sprocket and the second sprocket.

Each combustion zone in the combustion chamber is equipped with temperature detection sensors, which are connected to the corresponding controller. The signal output terminal of the controller is connected to the electromagnetic regulating valve on the burner gas supply pipeline. The temperature can be freely adjusted and controlled in multiple regions along the length direction of the cylinder.

The incineration, decomposition, drying, calcination, and roasting of materials mainly deal with the following materials: 4A zeolite (molecular sieve), activated carbon, agricultural waste, alum, aluminum sulfate, barite catalyst, copper sulfate, copper iron bauxite, diatomaceous earth, cast sand, industrial waste, iron oxide, ferric chloride, kaolin, limestone, magnesium chloride, magnesium hydroxide, nickel hydroxide catalyst, oxidant, zinc ore, mineral coating, sewage sediment, titanium dioxide.