The Bessemer process was the first inexpensive industrial process Industrial processes are procedures involving chemical or mechanical steps to aid in the manufacture of an item or items, usually carried out on a very large scale for the mass-production of steel Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese, chromium, vanadium, and tungsten. Carbon and other elements act as a hardening agent, preventing from molten pig iron Pig iron is the intermediate product of smelting iron ore with coke, usually with limestone as a flux. Pig iron has a very high carbon content, typically 3.5–4.5%, which makes it very brittle and not useful directly as a material except for limited applications. The process is named after its inventor, Henry Bessemer Sir Henry Bessemer , was an English engineer and inventor. Bessemer's name is chiefly known in connection with the Bessemer process for the manufacture of steel, who took out a patent on the process in 1855. The process was independently discovered in 1851 by William Kelly William Kelly , born in Pittsburgh, Pennsylvania, was an American inventor. Kelly studied metallurgy at the Western University of Pennsylvania. Instead of getting a job as a scientist, Kelly, his brother, and his brother-in-law started a dry goods and commission business, which they called McShane & Kelly. After a fire destroyed their.[1][2] The process had also been used outside of Europe for hundreds of years, but not on an industrial scale.[3] The key principle is removal of impurities Steelmaking is the second step in producing steel from iron ore. In this stage, impurities such as sulfur, phosphorus, and excess carbon are removed from the raw iron, and alloying elements such as manganese, nickel, chromium and vanadium are added to produce the exact steel required from the iron Iron is a metallic chemical element with the symbol Fe (Latin: ferrum) and atomic number 26. Iron is a group 8 and period 4 element and is therefore classified as a transition metal. Iron and iron alloys (steels) are by far the most common metals and the most common ferromagnetic materials in everyday use. Fresh iron surfaces are lustrous and by oxidation Redox describes all chemical reactions in which atoms have their oxidation number (oxidation state) changed. This can be either a simple redox process such as the oxidation of carbon to yield carbon dioxide or the reduction of carbon by hydrogen to yield methane (CH4), or it can be a complex process such as the oxidation of sugar in the human body with air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it molten.
Bessemer converter, schematic diagram
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by what is called the Bessemer process it has been found very convenient to judge as to the state of the molten metal by such an analysis of the flame which comes forth from it Seal Rocks near San Francisco California showing slight effect of waves where there is no beach No sooner was the spectroscope invented than astronomers hastened by its aid to
