New Process of Making Steel.

Manawatu Herald, Volume III, Issue III, 28 November 1891, Page 3

New Process of Making Steel.

™ * '- The first practical results of a new process of steelmaking have just been veach"d by the running of the first heat from a new experimental open hearth furnace at the • heftield Technical School. The process is the outcome of the ' researches of Professor Arnold, and consists in removing all the impurities from Swedish pig iron with the exception of the exact proportion of carbon required lor a given purpose, thus obtaining the ideal carbon and iron steel, homogeneous in structure and free from blow boles. These results are said to be obtained without the manganese and silicon, and also without the use of iron ore. he average time occupied by the process in the converson of a ton of pig iron into the highest class of steel yet made will be about three hours, the fuel used consisting of about half a ton ot rough slack. The run is stated to have been perfectly successful, the ingots showing a very high quality steel. It is anticipated that the range of the metal produced will vary from what will be practically wrought iron tool steel. The new furnace, together with the general plant, was designed to Prof. Arnold's specifications by Mr B. H. Thwaite, C.E., and is intended to produce three, tons of steel in 24 hours. j