carbonsforsteelmaking-asburycarbons.ppt

来自 : max.book118.com/html/2016/0919 发布时间：2021-03-26

CARBONS FOR STEELMAKING CARBONS FOR STEELMAKING I.. Materials Used For Steelmaking a. Anthracite Coal b. Metallurgical Coke c. Calcined Petroleum Coke d. Fluid Coke e. Artificial/Synthetic Graphite II. Uses of Carbon in Steelmaking a. BOF b. Induction Furnaces c. Electric Arc Furnaces i. Charge Carbon ii. Injection Carbon iii. Recarburizer III. Company Details CARBONS FOR STEELMAKING Materials Used For Steelmaking a. Anthracite Coal b. Metallurgical Coke c. Calcined Petroleum Coke d. Fluid Coke e. Artificial/Synthetic Graphite CARBONS FOR STEELMAKING MATERIALS USED FOR STEELMAKING Anthracite Coal – Found around the world. Anthracite is formed when organic carbon, derived from ancient swamps, becomes emplaced in the earth’s crust and is subjected to heat and pressure. Coal type is a function how much heat, pressure, and time the the formation is exposed to. Anthracite is considered the highest of coal grades having been exposed to low grade metamorphism. Anthracite is mined from seam deposits. The seam is removed and brought to a “Breaker” who processes the Anthracite Coal to different sizes and removes impurities. In the USA the majority of commercially available Anthracite Coal is found in Pennsylvania. The Fixed Carbon Content of Pennsylvania Anthracite Coal is 66 – 87%, Volatile Content is 5 – 9% and Sulfur Content is 0.5 – 1%. There are 8 sizes that are of interest to the Steel Industry ranging in size from 2 5/8” down to – 16 mesh CARBONS FOR STEELMAKING MATERIALS USED FOR STEELMAKING Metallurgical Coke Carbon produced in Coke Ovens. Most Coke Ovens are located at Integrated Steel Mills for use in the Integrated Steel Making Process. Bituminous Coal is fed into the Coke Oven and heated in an oxygen free atmosphere and devolatized. The heating is done in various steps which subject the coal to different temperatures for varying time periods. During each step different volatile compounds are driven off. These compou