Siemens-Martin process

Siduron [1982-49-6] Siegemte Siemens-Martin process Siemens process... 

The first gas producer making low heat-value gas was built in 1832. (The product was a combustible carbon monoxide—hydrogen mixture containing ca 50 vol % nitrogen). The open-hearth or Siemens-Martin process, built in 1861 for pig iron refining, increased low heat-value gas use (see Iron). The use of producer gas as a fuel for heating furnaces continued to increase until the turn of the century when natural gas began to supplant manufactured fuel gas (see Furnaces, fuel-fired). 

Martin-. (Zron) Martin, open-hearth, -fluss-eisen, n. open-hearth iron, -fluss-stahl, m. open-hearth steel, -ofen, m. Martin furnace, open-hearth furnace, -ofenschlacke,/. open-hearth slag, -roheisen, n. open-hearth pig (iron). -Stahl, m. Martin steel (open-hearth steel). -stahlofeQ, m. open-hearth steel furnace. -verfahren, n. (Siemens-)Martin process, open-hearth process. 

These combustion developments were first tested for steelmaking in 1863 in France, under license from Siemens, by a father and son team, E. Martin and P. Martin. Siemens himself tested the furnace for this purpose in Wales, 3 years later, and both operations were pronounced a success. These are now often referred to as the Siemens-Martin process after their joint development. 

Open-Hearth Process Method of steelmaking in which pig iron and scrap in a hearth are alternately heated by waste gases and then by incoming air and fuel gas also known as the Siemens-Martin process. 

SM Siemens-Martin process, LD Linz-Donawitz process... 

Iron is converted into steel by the Bessemer, Siemens-Martin or electrical processes. Iron can be rendered passive by contact with con-... 

Pig and scrap A colloquial name for the Siemens-Martin Open Hearth process. 

Siemens-Martin A predecessor of the Siemens Open Hearth process. See Open Hearth. 

Yaws, C.L. and Hopper, J.R., in Chemical Processing Handbook, Marcel Dekker, New York, 1993, 939. Siemens-Martin A predecessor of the Siemens Open Hearth process. See Open Hearth. Siemens Open Hearth See Open Hearth. 

The second forerunner (and competitor for some time) of the basic oxygen furnace was the open hearth furnace [Siemens-Martin (SM) process], where the oxidative effect was achieved by addition of scrap, iron ore, lime, and some air, which release oxygen into the iron melt. 

Acid Open Hearth The original version of the Open Hearth process for steelmaking in which the hearth is made of a silica refractory. The process does not remove phosphoms or sulfur, the acid impurities in the iron, so the raw materials must be relatively free from these. Pioneered by C. W. Siemens and F. M. E. and P. Martin at Sireuil, France, in 1864. 

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