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.