US 10,167,423 B2
Granulated slag products and processes for their production
Lai Chi So, Toronto (CA); and Santiago Faucher, Oakville (CA)
Assigned to HATCH LTD., Mississauga, Ontario (CA)
Appl. No. 15/315,766
Filed by HATCH LTD., Mississauga (CA)
PCT Filed Mar. 20, 2015, PCT No. PCT/CA2015/050209
§ 371(c)(1), (2) Date Dec. 2, 2016,
PCT Pub. No. WO2015/184532, PCT Pub. Date Dec. 10, 2015.
Claims priority of provisional application 62/007,180, filed on Jun. 3, 2014.
Prior Publication US 2017/0121595 A1, May 4, 2017
Int. Cl. C04B 5/00 (2006.01); C04B 5/06 (2006.01); C04B 20/10 (2006.01); C21B 3/08 (2006.01); C09K 8/80 (2006.01); B01J 23/78 (2006.01); C22B 7/04 (2006.01); C04B 18/14 (2006.01); C04B 103/00 (2006.01); C04B 111/00 (2006.01)
CPC C09K 8/805 (2013.01) [B01J 23/78 (2013.01); C04B 5/00 (2013.01); C04B 5/065 (2013.01); C04B 20/1029 (2013.01); C09K 8/80 (2013.01); C21B 3/08 (2013.01); C22B 7/04 (2013.01); C04B 2103/0062 (2013.01); C04B 2111/0081 (2013.01); C04B 2111/00586 (2013.01); Y02P 10/212 (2015.11); Y02W 30/94 (2015.05)] 28 Claims
OG exemplary drawing
 
1. A process for preparing solid slag granules from a molten slag composition, comprising:
(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, wherein at least one of the fractions produced by said sorting consists of said solid slag granules having an average sphericity of greater than 0.6, wherein at least one of the fractions produced by said sorting consists of said solid slag granules having an average sphericity of less than 0.6, and wherein a ratio of said solid slag granules having an average sphericity of greater than 0.6 to said solid slag granules having an average sphericity of less than 0.6 is controllable by adjustment of one or more of the following parameters:
(a) the temperature of the molten slag composition; and
(b) an angle between a gas stream and a falling stream of said molten slag composition, where the dispersion apparatus comprises an atomization apparatus.