re clinker grindability. some years ago i had some grindability testing done by magotteaux. two separate tests were performed, the first was the sgi test which assessed the number of revolutions within a test mill that were required to produce a surface area of 350 m2/kg. the second was a breakability test which assessed the height that a
portland cement clinker - overview. portland cement clinker is a dark grey nodular material made by heating ground limestone and clay at a temperature of about 1400 °c - 1500 °c. the nodules are ground up to a fine powder to produce cement, with a small amount of gypsum added to control the setting properties.
2re: clinker factor. the majority of portland cement clinker manufactured around the world has a lime saturation of between 90 and 100%. this means that c.1.55 tonnes of raw mix are required and c.0.55 tonnes of co2 are lost due to calcination of the caco3 in the raw material.
clinker is a nodular material produced in the kilning stage during the production of cement and is used as the binder in many cement products. the lumps or nodules of clinker are usually of diameter 3-25 mm and dark grey in color. it is produced by heating limestone and clay to the point of liquefaction at about 1400°c-1500°c in the rotary kiln.