(PDF) Cement Industry in Sri Lanka, · PDF | Cement is used as a construction material in Sri Lanka. It is made with calcined lime and clay. Alumina, silica and iron oxide are the main... | Find, read and cite all the ...X, · Determination of an unknown requires: the material, an instrument for grinding, and a sample holder. Obtain a few tenths of a gram (or more) of the material, as pure as possible Grind the sample to a fine powder, typically in a fluid to minimize inducing extra strain (surface energy) that can offset peak positions, and to randomize orientation.Iron ore, · Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe 3O 4, 72.4% Fe), hematite (Fe 2O 3, 69.9% Fe), goethite (FeO(OH), 62.9% Fe ...Finding the Sweet Spot in Vertical Machining Centers, · The 40/20 vertical machining center platform is rightly regarded as the workhorse of job shops. To help their customers deal with increased competitive pressures, machine tool builders are improving on this established 40 × 20" design, relying on advanced spindle technologies, fourth and fifth axis table-on-table configurations and high-speed, high-efficiency machining strategies.Mineral processing, · This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources.Unsourced material may be challenged and removed. In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the process of separating commercially valuable minerals from their ores.