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Based on the analysis of the crushing characteristics of the vertical roller mill, this paper studies the methods of crushing the materials, calculates the relative parameters for the single particle crushing-the largest clamp angle and the particle diameter, analyzes the force of friction between the roller and the material layer as well as the influence of the particle size on the clamp angle. Combined...
This article, based on the abrasion condition of the rollers on the working field, analyzes the movement characteristics of the material layer of the vertical roller mills from several aspects, such as the tangent speed difference between the roller and the grinding table, the “piles up” phenomenon as well as the flow forms of the material layer. Then we further studied the influence of the movement...
Traditional steel moment frames use welded beam-column connections, which are susceptible to brittle fracture and commonly have large residual deformation after the earthquakes. A novel beam-to-column connection for steel moment frame is proposed. Four full-scale new connections and two connections without self-centering capacity were tested under cyclic lateral load, the connections' strength property,...
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