IRON COMMERCIAL MANUFACTURING METHOD Russian patent published in 2012 - IPC C21B13/08 

FIELD: metallurgy.

SUBSTANCE: method involves loading of material containing iron oxide with particle-size distribution with ∂⁹⁰ of less than 2 mm, and excess carbon-bearing material with particle-size distribution with ∂⁹⁰ of less than 6 mm to inclined rotating cylindrical reactor with external heating or rotating furnace with capacity of at least 1000 kg of iron per hour. Material containing iron oxide and carbon-bearing material interact in rotating cylindrical reactor with external heating or rotating furnace at temperature of 900°C to 1200°C during the period of interaction of 30 to 360 minutes for recovery of iron oxide till iron powder is obtained. Feed rate of the material containing iron oxide and carbon-bearing material and operating temperature of reactor is chosen so that velocity of surface gas flow through the reactor, which is induced with gas liberation as a result of recovery, is less than 2 ms^-1. The obtained iron powder is separated from excess carbon-bearing material with magnetic separation.

EFFECT: invention allows obtaining the iron of high quality in the form of powder, as well as relatively pure gaseous carbon monoxide as by-product.

10 cl, 2 dwg, 2 ex