公开(公告)号：US20220323898A1

公开(公告)日：2022-10-13

申请号：US17642548

申请日：2020-08-13

Applicant: JFE STEEL CORPORATION

Inventor： Ryota MURAI ,  Goro OKUYAMA ,  Shunsuke OURA ,  Reo FUJIMURA ,  Tomomichi NAKAMURA ,  Shinichi SUEJIMA

IPC: B01D53/00 ,  B01D5/00

Abstract: An exhaust gas treatment method by which mercury contained in exhaust gas can be separated and removed efficiently and inexpensively. The method includes cooling an exhaust gas containing mercury in metal vapor phase by spraying water or other methods to condense mercury in the exhaust gas from metal vapor phase into metal liquid and thus to separate and remove mercury from the exhaust gas. When the exhaust gas is cooled by spraying water, the sprayed water is collected and separated into separated water and a solid containing mercury that has condensed to metal liquid, and mercury is recovered from the solid. The metal mercury particles that have condensed to metal liquid are dispersed in cooling water. The metal mercury particles can thus be easily separated and recovered by using a suitable separation device.

公开(公告)号：US20200040427A1

公开(公告)日：2020-02-06

申请号：US16490240

申请日：2018-04-20

Applicant: JFE STEEL CORPORATION

Inventor： Masato KUROIWA ,  Shunsuke NONAKA ,  Yukimasa HORIKAWA ,  Shunsuke OURA ,  Tetsuya JINNO

IPC: C22B1/16

Abstract: Uneven sintering is prevented in a sintering machine, and thus sintered ore having high strength and a high lump yield rate is manufactured. A method for manufacturing sintered ore comprising: charging sintering raw material comprising fine ore and carbon material on a circulatively moving pallet to form a raw material layer; igniting the carbon material on a surface of the raw material layer and sucking air from above the raw material layer down to below the palette so that the air is introduced into the raw material layer; and combusting the carbon material in the raw material layer to thereby manufacture sintered ore, wherein fuel gas is discharged from a nozzle at a flow speed of 40 Nm/s or more, the discharged fuel gas is combusted to generate combustion gas, and the combustion gas is used for the igniting the carbon material.