US 12,241,684 B2
Direct reduction shaft furnace with probe for measuring interior gas analysis
Mahdi Farahani, Munster, IN (US); Justin Farley, Sorel-Tracy (CA); George Tsvik, Valparaiso, IN (US); and Gabriel Jesus Lucena Mogollon, Saint-Hubert (CA)
Assigned to ArcelorMittal, Luxembourg (LU)
Appl. No. 17/292,512
Filed by ArcelorMittal, Luxembourg (LU)
PCT Filed Nov. 13, 2018, PCT No. PCT/IB2018/058888
§ 371(c)(1), (2) Date May 10, 2021,
PCT Pub. No. WO2020/099908, PCT Pub. Date May 22, 2020.
Prior Publication US 2021/0396469 A1, Dec. 23, 2021
Int. Cl. F27B 1/28 (2006.01); C21B 13/02 (2006.01); F27D 21/00 (2006.01); G01K 13/024 (2021.01); H01J 49/04 (2006.01)
CPC F27B 1/28 (2013.01) [C21B 13/02 (2013.01); F27D 21/0014 (2013.01); G01K 13/024 (2021.01); H01J 49/0422 (2013.01); F27D 2021/0007 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for the direct reduction of metal ore, the apparatus comprising:
a vertical shaft furnace for the direct reduction of metal ore, the vertical shaft furnace having a metal ore reduction zone in an upper region of the vertical shaft furnace and a cooling zone in a lower region of the vertical shaft furnace;
at least one probe for sampling gas from within the reduction zone of said vertical shaft furnace;
the at least one probe being disposed vertically within the reduction zone and extending through the entire reduction zone;
the probe comprising a plurality of sampling pipes, each sampling pipe having an upper portion and an end portion, the sampling pipes being disposed within at least one support pipe;
wherein the plurality of sampling pipes are concentrically nested, wherein a first sampling pipe of the plurality of sampling pipes has a first length and each subsequent one of the plurality of sampling pipes being concentrically nested within a previous one of the sampling pipes and being longer than the previous sampling pipe so as to have an end portion protruding from the previous sampling pipe.