The Lanhao valve is installed on the blast furnace tuyere and used in conjunction with the pulverized coal injection lance to connect the coal injection rod. It opens when the lance is inserted into the blast furnace and automatically closes when the lance is withdrawn, preventing the hot gas inside the furnace from escaping. This utility model relates to a pulverized coal injection equipment for blast furnaces, specifically an arc-swirl nozzle wheel for blast furnace pulverized coal injection. The technical solution is as follows: The arc-swirl nozzle for blast furnace pulverized coal injection consists of a lance pipe and a nozzle head. The top of the nozzle head is equipped with a spherical pulverized coal atomization disk, and there is a gap for pulverized coal airflow between the atomization disk and the end of the lance pipe. Using this utility model, the pulverized coal airflow is diverted by the atomization disk from the lance pipe to the nozzle head and sprayed out in an umbrella shape, forming an atomized pulverized coal flow. These fine atomized coal flows instantly achieve excellent mixing with the blast furnace hot air, ensuring full combustion of the pulverized coal. It features a rational structure, ease of use, improved coal combustion rate, and enhanced mixing ratio between pulverized coal and blast furnace hot air.

      Our Lanhao Company was the first in China to develop blast furnace pulverized coal injection technology, enabling high coal ratios, uniform injection, and low-cost operation. Our company has accumulated years of production experience in the field of blast furnace coal injection. The various ball valves we produce, including both standard and non-standard series, are characterized by excellent air tightness, strong pressure resistance, compact structure, low failure rate, and economic practicality.

      Lanhao Environmental Protection Company is a manufacturer of various blast furnace pulverized coal injection products, including vent filters, ball valves, coal injection rods, pulverized coal distributors, air supplement check valves, air supplement regulators, pulverized coal filters, cone fluidizers, fluidization devices for injection tanks and pulverized coal bins, pulverized coal ball valves, dense-phase pulverized coal conveyors, and pulverized coal collectors. With years of experience in the coal injection industry, our products are guaranteed by careful material selection, craftsmanship, strict quality inspection, and responsible after-sales service. We also undertake the design and installation of coal injection systems and pneumatic conveying systems on a long-term basis.