Nu-Iron Technology, LLC.

Mark M Brandon

Bradford G True

Rodney L Bleifuss

Iwao Iwasaki

David J Englund

Donald Fosnacht

Robert Mcginnis

Demrey G Brandon

Stanley James Ponce

John Daniel Feyrer

Rodney Bleifuss

A hearth furnace for producing metallic iron material has a furnace housing having a drying/preheat zone, a conversion zone, a fusion zone, and optionally a cooling zone, the conversion zone is between the drying/preheat zone and the fusion zone. A moving hearth is positioned within the furnace housing. A hood or separation barrier within at least a portion of the conversion zone, fusion zone or both separates the fusion zone into an upper region and a lower region with the lower region adjacent the hearth and the upper region adjacent the lower region and spaced from the hearth. An injector introduces a gaseous reductant into the lower region adjacent the hearth. A combustion region may be formed above the hood or separation barrier.

System and method for producing metallic iron

A hearth furnacefor producing metallic iron material has a furnace housingwith a drying/preheat zonecapable of providing a drying/preheat atmosphere for reducible material, a conversion zonecapable of providing a reducing atmosphere for reducible material, a fusion zonecapable of providing an atmosphere to at least partially reduced metallic iron material, and optionally a cooling zonecapable of providing a cooling atmosphere for reduced material containing metallic iron material. A hearthis movable within the furnace housingin a direction through the drying/preheat zone, then the conversion zone, then the fusion zone, and then the cooling zone. A separation barrieris positioned within at least a portion of the conversion zone, the separation barrierseparating the conversion zoneinto a combustion regionand a reducing regionwith the reducing regionadjacent the hearthand the combustion regionadjacent the reducing regionand spaced from the hearth

System and method of producing metallic iron

A multiple moving hearth furnace () having a furnace housing () with at least two moving hearths () positioned laterally within the furnace housing, the hearths moving in opposite directions and each moving hearth () capable of being charged with at least one layer of iron oxide and carbon bearing material at one end, and being capable of discharging reduced material at the other end. A heat insulating partition () is positioned between adjacent moving hearths of at least portions of the conversion zones (), and is capable of communicating gases between the atmospheres of the conversion zones of adjacent moving hearths. A drying/preheat zone (), a conversion zone (), and optionally a cooling zone () are sequentially positioned along each moving hearth () in the furnace housing ().

Multiple hearth furnace for reducing iron oxide

A hearth furnacefor producing metallic iron material has a furnace housinghaving a drying/preheat zone, a conversion zone, a fusion zone, and optionally a cooling zone, the conversion zoneis between the drying/preheat zoneand the fusion zone. A moving hearthis positioned within the furnace housing. A hood or separation barrierwithin at least a portion of the conversion zone, fusion zoneor both separates the fusion zoneinto an upper region and a lower region with the lower region adjacent the hearthand the upper region adjacent the lower region and spaced from the hearth. An injector introduces a gaseous reductant into the lower region adjacent the hearth. A combustion region may be formed above the hood or separation barrier.

Growing community of inventors

Charlotte, NC, United States of America

Mark M Brandon