Abrasivity and grindability study of mineral ores

Mineral–vegetal co-milling: An effective process to improve lignocellulosic biomass fine milling and to increase interweaving between mixed particles

“…These differences are related to high contrast in chemical composition and structure. Indeed, both straw and sawdust are light and porous materials composed of organic polymers organized in cell structures with high void content (Barakat et al, 2013) while, minerals exhibit a partially crystallized structure with few pores and high-density (Kulu et al, 2009). Table 1 gives the main data determined from the PSDs from the milling of pure materials.…”

“…1a) clearly exhibited different peaks showing the presence of several populations of particles. Their characteristic sizes are of great importance because they could be seen as a signature of the milling process and may reveal the microstructural properties (Kulu et al, 2009). A principal component analysis (PCA) has been performed on the set of PSDs for all materials.…”

“…Minerals exhibits highly brittle behavior (Kulu et al, 2009) while the lignocellulosic biomasses presents a much lower grindability mainly due to a visco-plastic behavior (Kaliyan and Morey, 2009). These types of blends can be directly used for bio-based materials such as wood/straw cements (Arsène et al, 2013;Jorge et al, 2004;Sedan et al, 2008) but co-milling is also a promising way to improve the comminution of lignocellulosic biomass for valorisation processes as extraction of value added molecules (Clark et al, 2009) or bioenergy (biohydrogen, biomethane, bioethanol, biomass combustion) (Boylan et al, 2000;Motte et al, 2014Motte et al, , 2013.…”

Fuzzy Statistical Process Control of a Calcite Grinding Plant Using Total Color Difference Parameter (ΔE)

“…One of the few machines for grinding of materials by collision is a disintegrating mill-disintegrator [2], a mill for reducing lump material to a granular product. where crushing took place partly by direct impact and partly by interparticulate attrition [3]. Ground and precipitated calcium carbonates are widely used as performance minerals in the rubber, plastics and paper industries.…”

Characterization and Use of Egyptian Nubian Sandstone in the Ceramic Tile Industry

“…In order to confirm the feasibility of using the Nubian sandstone, grindability studies were performed through crushing and grinding experiments. These tests showed that the grindability of the mineral ores depends more on their composition and properties (fracture toughness, homogeneity of the structure) than on their hardness [4,5].…”