iron and slag in carbon composite iron ore pellets has been investigated experimentally using an electric resistance furnace simulating a rotary hearth furnace process. The factors that affect the formation of iron nuggets, such as temperature, holding time, molecular ratio of C/O and basicity, are discussed.
High Quality Iron Nuggets Using a Rotary Hearth Furnace. The Mesabi Nugget Project is a large scale pilot project which successfully demon strates the innovative ITmk3® ironmaking technology developed by Kobe Steel for the North American scenario. The ITmk3® pro cess uses a rotary hearth furnace to turn iron ore fines and pulverized coal into high
A variety of methods are emerging.13 Rotary hearth furnaces , direct reduction processes using carbon containing pellet feeds, with its improved environmental footprint, extensive raw material and, flexible operating performance, are developing rapidly around the world.46 In addition, the rotary hearth furnace iron nuggets process is preferred by the domestic and international metallurgical workers due to the advantages of the final product.7,8
Ironmaking in Rotary Hearth Furnace. Ironmaking in the rotary hearth furnace is a direct reduction process which utilizes non coking coal for the reduction of iron ore. The RHF is the process reactor which consists of a flat, refractory hearth rotating inside a stationary, circular tunnel kiln.
One element that is also considered undesirable for zinc recyclers is iron , and contamination by this element is much more closely tied to the manner in which a rotary hearth furnace is operated. Poor mechanical strength of pellets and fines generation during processing are the major contributors to iron contamination ...
ITmk3: High Quality Iron Nuggets Using a Rotary Hearth Furnace Steelmaking Process with a One step Furnace Operation Uses Less Energy The industrial sector consumes 30% of all U.S. energy consumption, of which about half is consumed by iron and steel production.
The pellets are charged into a rotary hearth furnace , heated to 1350 deg C, reduced, melted and separated into metal and slag. The molten iron is solidified into nuggets inside the furnace, discharged after cooling and separated from the slag.