The KRS burner made by our company is crude gas-fired. By homogeneous mixing of combustion-supporting air sprayed in a revolving and multi-section way with gas, steady and complete combination and short flame, high temperature combustion zone is easily formed and thus it has extraordinary heating ability. Since air pressure is higher than gas pressure, air sprayed at high speed can inhale gas according to proportion, the burner itself has the ability for automatic adjustment. The burner has cleaning device and it is characterized by small volume, light weight, low requirement on gas pressure and good sealing performance, easy to install and maintain. Its gas burning capacity is available for 80~5000Nm3/h.