As an old senior who studied mineral processing engineering at the University of Mining and Technology for six years, I think it must be Professor Zheng Shuilin's class. As a student of Professor Zheng Shuilin, there is no doubt about this. As a professor of mineral processing engineering, doctoral supervisor and expert in diatom mud industry in the School of Chemistry and Environmental Engineering, Professor Zheng Shuilin devoted his life to the development of nonmetallic mineral materials industry and was praised as "the first person in diatom mud". He has been trying to industrialize scientific research results. At present, the popularization and development of diatom mud in the market can not be separated from the promotion and contribution of Professor Zheng Shuilin.

Professor Zheng Shuilin can combine decades of R&D experience with industrial experience in class, and make it vivid. The teacher himself is an optimistic and cheerful person. Although there are more than sixty people, his body is very strong. Therefore, whether academically or in life, Professor Zheng Shuilin has cleaned up a person worthy of our study and respect. It is meaningful to rub Professor Zheng Shuilin's class and see his "beauty". In the photo, Professor Zheng Shuilin is dressed in red. This is a photo of Teacher Zheng Shuilin taking us on a graduation trip.

In addition, the class of teacher Pan Yongtai, who has been engaged in the research and development of coal preparation machinery, is also very worth listening to. Professor Pan Yongtai himself comes from Tangshan Coal Preparation Machinery Research Institute and has many years of design experience. Later, he was specially invited by the University of Mining and Technology to engage in teaching and scientific research in the Department of Mining and Processing. Therefore, Professor Pan Yongtai, combined with practical design experience, was able to give a vivid presentation of complex courses such as mechanical design. At the same time, Mr. Pan Yongtai is very kind, likes playing basketball, is serious and responsible for students, and often invites entrepreneurs and other people with rich first-line work experience.