The coal injection guns produced by Lanhao Environmental Protection work in conjunction with matching gun check valves (ball valves) to form the core components of the blast furnace coal injection system. Their working principles and characteristics are as follows:
Structure and Function of Coal Injection Gun
Core Components
Gun Pipe: A seamless stainless steel pipe that transports the pulverized coal airflow, featuring both wear resistance and high-temperature resistance.

Gun Head Atomization Disc: Equipped with a spherical atomization disc at the top, forming an annular gap with the gun pipe, allowing the pulverized coal to be sprayed in a umbrella shape, thereby improving mixing efficiency with the hot air.
Insertion Method Classification
Type | Characteristics | Applicability
Angled Insertion | Inserted into the straight blowpipe (angle 12°~14°), short heated section, easy operation, requires precise control of insertion depth | Mainstream application, prevents tuyere wear
Straight Insertion | Inserted parallel from the peephole, easily obstructs observation view, long heated section prone to deformation | Less commonly used
Tuyere Fixed Type | Embedded in the tuyere cooler water cavity, no need to remove the gun when stopping injection, but complex manufacturing and reduces tuyere lifespan | Phased out