US 2022/0106235 A1

Classification and recombination of different SCM and cement fractions to efficiently manufacture cement-SCM compositions

(22) 16.12.2021

(43) 07.04.2022

(57) Methods and systems for efficiently manufacturing particu-late blending materials for use in making particle size optimized cements, SCMs, blended cements and cement-SCM blends. An initial hydraulic cement or SCM having an initial particle size distribution (PSD), an initial d10, and an initial d90 is processed using one or more air classifiers, and optionally one or more mills, to yield a plurality of hydraulic cement or SCM fractions having desired particle size distributions (PSDs). The hydraulic cement fractions can be blended with SCMs to form binary and ternary cement-SCM blends. The SCM fractions can also be used to make binary and ternary blends. A surplus fine cement fraction can be used to raise the fineness and/or reactivity of a less fine and/or less reactive hydraulic cement. A surplus fine SCM can be used as a silica fume substitute.

(71) Roman Cement, LLC, Salt Lake City, UT (US)

x

Related articles:

Issue 2023-3 US RE49 415 E

(22) 06.03.2019 (45) 14.02.2023 (57) Cement-SCM blends employ particle packing principles to increase particle packing density and reduce interstitial spacing between the cement and SCM particles....

more
Issue 2015-10 US 9 102 567 B1

(22) 30.05.2013 (45) 11.08.2015 (57) Engineered cements are described that include an engineered clinker fraction designed for use with one or more supplementary cementitious material (“SCM”)...

more
Issue 2020-3 US 10 494 298 B1

(22) 24.10.2016 (45) 03.12.2019 (57) Cement-SCM compositions have improved strength compared to cement-SCM compositions made using conventional blended cements and methods. The cement-SCM compositions...

more
Issue 2020-11-12 EP 3 718 985 A1

(22) 14.04.2011 (43) 07.10.2020 (57) Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S),...

more
Issue 2012-11

1 Introduction Granulated blast furnace slag (GBFS) is an industrial byproduct of the iron production and a valuable mineral raw material. It is used in the production of different building materials....

more