Electrode paste manufacturing includes production processes such as medium crushing and screening, powder grinding, batching, kneading and forming and cooling. Among them, medium crushing and screening and grinding are the main two steps.
①Middle crushing and screening. This project is equipped with a medium crushing and screening system for calcined anthracite. The calcined anthracite is fed by an electromagnetic vibrating feeder, and sent to a double-layer horizontal vibrating screen and a single-layer horizontal vibrating screen via a belt conveyor and a bucket elevator. The materials are screened and processed. The particle size is greater than 10mm. Return to the intermediate bin, and then feed the material from the electromagnetic vibrating feeder into the double-roll crusher. Sieving again after medium crushing. 10～6mm, 6～3mm granularity materials can directly enter the corresponding batching bin, or return to the double-roll crusher to be finely crushed to below 3mm, which is convenient for flexible production adjustment. There are 3 kinds of granular materials, 10～6mm, 6～3mm, 3～0mm, 6～3mm, 3～0mm. In addition to directly entering the batching bin, some of them are sent to the mill to pulverize into powder. After being crushed to a particle size of less than 20mm in two stages in the processing section, the raw scrap is directly transported into the raw scrap bin for use by a belt conveyor and bucket elevator.
② Flour milling. In order to ensure the compactness of the electrode paste products, a certain proportion of powder (about 45%) must be added to fill the gaps between the pellets during the production of the electrode paste. The main source of the powder is the calcined anthracite dust, calcined petroleum coke and coke dust collected by the dust collection system and is pulverized into powder by the mill.