Portland Cement Clinker

Portland Cement Clinker

. . The cement clinker is a dark grey nodular material produced through heating the ground limestone and clay at a temperature range of 1400-1500 degrees of centigrade. The produced nodules are ground up to a fine powder to produce cement, with a small amount of gypsum included to control the properties. Nodules consist of…

History-of-Sulfuric-Acid

History of Sulfuric Acid

. At the present time, sulfuric acid (alternative spelling sulphuric acid) is one of the most highly consumed chemicals globally but it was probably not recognized before the 16th century. . First, sulfuric acid was invented by Johann Van Helmont (c.1600) through destructive distillation of green vitriol (ferrous sulfate) and by burning sulfur. The leading…

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