The lead smelting rotary furnace is an important equipment used in the lead smelting process, mainly used to separate lead metal from other impurities by high-temperature smelting of materials such as lead ore or lead waste, achieving lead extraction and recovery. Here is a detailed introduction about it:

structural composition

Kiln body: usually welded from steel plates, it is the main structure of the rotary furnace. Its length varies depending on the application, reaching tens of meters or even longer.

Lining: It is a layer of refractory material used to protect the kiln body from high temperatures inside the furnace and reduce heat loss. Common lining materials include silica bricks, high alumina bricks, etc.

Drive gear: By meshing with the ring gear on the kiln body, it drives the kiln body to rotate around its axis, allowing the materials in the kiln to move uniformly and be heated inside the furnace.

Heating system: including burners, electric heaters, etc., providing the required heat for the smelting process inside the furnace. Hot gas flows through the furnace chamber, usually in the opposite direction of material flow, to achieve sufficient heat exchange.

working principle

Lead smelting rotary furnaces are generally horizontal, with the kiln body slightly inclined (usually at an angle of 2 ° -5 °) and rotating at a certain speed (such as 0.5-2.5 r/min). Pre treated materials such as lead ore, lead paste, or lead slag enter from one end of the rotary furnace, and gradually move towards the other end during the rotation process. At the same time, the heating system inside the furnace keeps the material in a high-temperature environment (temperature can reach over 1000 ℃), melting metals such as lead and separating them from other non melting impurities. For example, when processing lead-acid battery waste, a rotary furnace can melt the lead metal in the lead paste, while other impurities form slag.

Main advantages

High production capacity: capable of continuously processing large amounts of materials, suitable for large-scale lead smelting production.

High energy utilization efficiency: Its design helps to achieve effective heat distribution, reduce heat loss, and lower energy consumption.

Easy to operate: With a high degree of automation, minimal manual intervention is required, and it is convenient to control parameters such as temperature and speed inside the furnace.

High lead recovery rate: Compared with some traditional lead smelting equipment, rotary furnaces can more effectively recover lead metal and improve lead recovery rate.

Application field

Lead smelting rotary furnaces are mainly used in the fields of primary lead smelting and lead regeneration. In primary lead smelting, it is used to process lead ore and extract lead elements from it; In the field of lead recycling, it is mainly used to treat lead containing waste such as lead-acid batteries, achieving the recycling and reuse of lead metal.