Abstract: The problem facing the plant is the difficulty in making effective arrangement of process equipment due to restrictions imposed by the excessively low inclination angle of the belt conveyor for conveyance of coarse coal product. Through in-depth analysis, selection of parameters and adoption of protective measures, a conveyor with an inclination angle of 22°is designed. Practice shows that the deep-trough large inclination angle conveyor runs steadily, and proves to be the first of its kind ever developed. This offers a new choice for the conveyance of coarse coal product in coal preparation plant.