Coke Strength after Reaction (CSR) refers to coke "hot" strength, generally a quality reference in a simulated reaction condition in an industrial blast furnace . The test is based on a procedure developed by Nippon Steel Corp in the 1970s as an attempt to get an indication of coke performance and is used widely throughout the world since then. It is one of the major considerations when blending coking coal for export sale.
5-416: The coke sample is first tested for its reactivity (CRI), then the same sample is tested for strength (CSR). A 200 g sample of 19–21 mm particle range coke is heated at 1100°C under 1 atmosphere pressure of carbon dioxide for 2 hours. Next, the coke is cooled under nitrogen and the weight loss resulting from reaction is measured. The percentage weight loss is known as reactivity (CRI). The reacted coke
10-434: Is placed in an I-type drum (no lifters) and subjected to 600 revolutions in 30 minutes. The percent of carbon material removed from the drum that is ≥10 mm is known as the coke strength after reaction (CSR). This material -related article is a stub . You can help Misplaced Pages by expanding it . Atmosphere (unit) The standard atmosphere (symbol: atm ) is a unit of pressure defined as 101 325 Pa . It
15-423: Is sometimes used as a reference pressure or standard pressure . It is approximately equal to Earth 's average atmospheric pressure at sea level . The standard atmosphere was originally defined as the pressure exerted by a 760 mm column of mercury at 0 °C (32 °F) and standard gravity ( g n = 9.806 65 m/s ). It was used as a reference condition for physical and chemical properties, and
20-408: The definition of the centigrade temperature scale set 100 °C as the boiling point of water at this pressure. In 1954, the 10th General Conference on Weights and Measures (CGPM) adopted standard atmosphere for general use and affirmed its definition of being precisely equal to 1 013 250 dynes per square centimetre ( 101 325 Pa ). This defined pressure in a way that is independent of
25-459: The properties of any particular substance. In addition, the CGPM noted that there had been some misapprehension that the previous definition (from the 9th CGPM) "led some physicists to believe that this definition of the standard atmosphere was valid only for accurate work in thermometry ." In chemistry and in various industries, the reference pressure referred to in standard temperature and pressure
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