The RJM-F flat-type steam jet mill series has a chamber diameter of 400–1200 mm, a throughput of 1.2–4 t/h, a steam temperature of 260–280 ℃ and a steam pressure of 1.8–2.5 MPa. The grinding chamber is made of super wear-resistant material in a modular structure that is easy to replace and extends equipment life, making it suitable for high-volume steam-jet grinding of titanium dioxide and similar materials.