公开(公告)号：US10174403B2

公开(公告)日：2019-01-08

申请号：US15537708

申请日：2015-12-14

Applicant: HATCH LTD.

Inventor： Sina Mostaghel ,  Matthew H. Cramer ,  Santiago Faucher ,  Lai Chi So ,  Johannes Nell

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

Abstract: 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：US20170121595A1

公开(公告)日：2017-05-04

申请号：US15315766

申请日：2015-03-20

Applicant: HATCH LTD.

Inventor： Santiago Faucher ,  Lai Chi So

IPC: C09K8/80 ,  B01J23/78 ,  C04B5/06 ,  C04B20/10 ,  C21B3/08 ,  C04B5/00

CPC classification number: C09K8/805 ,  B01J23/78 ,  C04B5/00 ,  C04B5/065 ,  C04B20/1029 ,  C04B2103/0062 ,  C04B2111/00586 ,  C04B2111/0081 ,  C09K8/80 ,  C21B3/08 ,  C22B7/04 ,  Y02P10/212 ,  Y02W30/94 ,  C04B18/141

Abstract: A process for preparing solid slag granules from a molten slag composition comprises: (a) providing the molten slag composition; (b) converting the molten slag composition into the solid slag granules in a dispersion apparatus; and (c) sorting the solid slag granules by shape in a separator to produce a plurality of fractions having different sphericities. Granular slag products comprise one or more fractions of solid slag granules produced by the process, and include proppants, roofing granules, catalyst supports, which may be porous or non-porous, and coated or uncoated.

公开(公告)号：US20170297113A1

公开(公告)日：2017-10-19

申请号：US15512955

申请日：2015-09-21

Applicant: HATCH LTD.

Inventor： Santiago Faucher ,  Sina Mostaghel ,  Lai Chi So ,  Matthew Cramer

IPC: B22F9/08

CPC classification number: B22F9/082 ,  B01J2/04 ,  B22F2009/0832

Abstract: Metallurgical processes and systems for gas atomization of molten slag and/or molten metals from a metallurgical furnace are integrated with off-gas handling processes and equipment, such that the off-gases are fed to the gas atomization plant for atomizing the molten slag and/or molten metal. The use of by-product off-gases for atomizing molten slag and/or molten metals provides a number of benefits, including elimination of off-gas handling and treatment equipment, centralization and upgrading of heat via atomization to improve heat recovery, prevention of oxidation of granular products of atomization, and reduction of CO2 emissions. A process for preparing a granular product comprises: feeding a molten material and a by-product off-gas to a dispersion apparatus; and contacting the gas with the molten material in the dispersion apparatus, whereby the molten material is dispersed and solidified by contact with the gas to form the granular product.

公开(公告)号：US10167423B2

公开(公告)日：2019-01-01

申请号：US15315766

申请日：2015-03-20

Applicant: HATCH LTD.

Inventor： Lai Chi So ,  Santiago Faucher

IPC: C04B5/00 ,  C04B5/06 ,  C04B20/10 ,  C21B3/08 ,  C09K8/80 ,  B01J23/78 ,  C22B7/04 ,  C04B18/14 ,  C04B103/00 ,  C04B111/00

Abstract: A process for preparing solid slag granules from a molten slag composition comprises: (a) providing the molten slag composition; (b) converting the molten slag composition into the solid slag granules in a dispersion apparatus; and (c) sorting the solid slag granules by shape in a separator to produce a plurality of fractions having different sphericities. Granular slag products comprise one or more fractions of solid slag granules produced by the process, and include proppants, roofing granules, catalyst supports, which may be porous or non-porous, and coated or uncoated.

公开(公告)号：US20170137912A1

公开(公告)日：2017-05-18

申请号：US14915451

申请日：2015-03-20

Applicant: HATCH LTD. ,  ECOMAISTER CO., LTD.

Inventor： Santiago Faucher ,  Sang-Yoon Oh ,  Sina Mostaghel ,  Lai Chi So ,  Victor Hernandez ,  Maurizio Darini ,  Darryl Robert Metcalfe ,  Tom Rafferty

IPC: C22B7/04 ,  C04B5/00 ,  C21B3/08

CPC classification number: C22B7/04 ,  C04B5/00 ,  C04B28/02 ,  C04B2111/0081 ,  C21B3/08 ,  C21B2400/024 ,  C21B2400/052 ,  C21B2400/062 ,  Y02P10/212 ,  Y02W30/94 ,  C04B18/141

Abstract: A process for producing substantially dry slag granules comprises adding a controlled amount of water to a molten stream of slag, and granulating the slag to produce solidified slag comprising substantially dry slag granules and slag wool. An apparatus for producing substantially dry slag granules comprises: (a) an inclined surface having an upper and lower ends for receiving and discharging the stream of slag; (b) a dispersion device at the lower end of the inclined surface for dispersion of the molten slag; (c) one or more water addition devices for adding a controlled amount of water to the molten slag; and (d) a collection area adjacent to the dispersion device for deposition of solidified slag produced by the dispersion. The quantity of slag wool produced by the process and apparatus is less than that which would be produced without the addition of water.