公开(公告)号：US20170362680A1

公开(公告)日：2017-12-21

申请号：US15537708

申请日：2015-12-14

申请人： HATCH LTD.

发明人： Sina MOSTAGHEL ,  Matthew H. CRAMER ,  Santiago FAUCHER ,  Lai Chi SO ,  Johannes NELL

IPC分类号： C22B7/04 ,  C22B7/00 ,  C04B5/00 ,  B03C1/02 ,  B22F9/08 ,  C01B13/16 ,  C01G55/00 ,  G01N33/20 ,  C01B13/34

CPC分类号： C22B7/04 ,  B03C1/02 ,  B03C2201/20 ,  B22F9/082 ,  B22F2009/0824 ,  C01B13/16 ,  C01B13/34 ,  C01G55/004 ,  C01P2006/80 ,  C04B5/00 ,  C22B7/005 ,  G01N33/20 ,  Y02P10/212

摘要： A method for recovering metal values from a molten slag composition includes atomizing the slag with an oxygen-containing gas in a gas atomization apparatus, to produce solid slag granules. Oxygen in the atomizing gas converts metals to magnetic metal compounds, thereby magnetizing the metal-containing slag granules. These metal-containing slag granules are then magnetically separated. Larger amounts of metals may be removed by passing the molten slag through a pre-settling pan with an adjustable base, and/or discontinuing atomization where the metal content of the slag exceeds a predetermined amount. Solid slag granules produced by atomization may be charged to a recovery unit for recovery of one or more metal by-products. An apparatus for recovering metal values from molten slag includes a gas atomization apparatus, a flow control device for controlling the flow of atomizing gas, a control system, and one or more sensors to detect metal values in the slag.

公开(公告)号：US20180067201A1

公开(公告)日：2018-03-08

申请号：US15812462

申请日：2017-11-14

申请人： HATCH LTD.

发明人： Matthew H. CRAMER ,  Afshin SADRI ,  Jennifer ERSKINE ,  David CHATAWAY ,  Bert O. WASMUND ,  Terry GERRITSEN

IPC分类号： G01S13/08 ,  G01F23/284 ,  G01S13/88 ,  F27B3/28

摘要： A method for determining a length parameter of an electrode during operation of an electric arc furnace. An internal duct extends through the length of the electrode and is open at its lower end. A waveguide having a solid core is received in the internal duct and comprises a material having a low dielectric constant and high temperature resistance. The solid core of the waveguide includes at least one target. An electromagnetic radiation signal is emitted from a source and transmitted through the waveguide and the signal is diffracted and/or reflected from at least one target to produce at least one return signal which is transmitted back through the waveguide. A time or frequency difference between the emitted signal and the return signal is measured and the length parameter is calculated based on this difference.