The new stora process for ironmaking

Abstract

The new Stora ironmaking process is described and compared with other ironmaking processes; the process has several distinct advantages where, for example, there is a supply of high-grade ore and a shortage of metallurgical coke. A liquid product of controlled composition and temperature is produced. This provides an ideal feed material for oxygen steelmaking processes or foundry application. Low Phosphorous pig iron can be produced from high phosphorous ore when basic linings are used and little or no preparation of the fuel and ore is required prior to reduction. Low-grade carbonaceous fuels, such as coke-breeze and certain types of coal can be used, and the total fuel consumption is low. Early indications are that for small-scale operations for example upto 1,50,000 tons of pig iron a year, the process is cheaper both in capital and operating costs than other ironmaking processes. (Mr. A.N. Whiting, General Manager, and Dr. A.G.Raper, Metallurgical and Technical Manager of Steel Processes Division, Davy and United Engineering Company Limited, Sheffield, England)