US 2021/0094876 A1

Cement production

(22) 20.12.2018

(43) 01.04.2021

(57) The present invention provides a method and system for manufacturing cement wherein ground particles of cement and calcium sulfate are subjected to infrared sensors, laser sensors, or both, so that emanated, irradiated, transmitted, and/or absorbed energy having wavelengths principally within the range of 700 nanometers to 1 millimeter can be monitored and compared to stored data previously obtained from ground cement and sulfate particles and preferably correlated with stored strength, calorimetric, or other data values, such that adjustments can be made to the mill processing conditions, such as the form or amounts of calcium sulfate (e.g., gypsum, plaster, anhydride), or cement additive levels. The strength and other properties of cement can be thus adjusted, and its quality can be more uniform.

(71) GCP Applied Technologies Inc., Cambridge, MA (US)

x

Related articles:

Issue 2020-9 WO 2020/091821 A1

Cement production

(22) 20.12.2018 (43) 07.05.2020 (57) The present invention provides a method and system for manufacturing cement wherein ground particles of cement and calcium sulfate are subjected to infrared...

more
Issue 2019-1-2 US 2018/0305257 A1

Gypsum set accelerator and method of preparing same

(22) 12.03.2018 (43) 25.10.2018 (57) A modified gypsum set accelerator and a method of preparing the same is provided, which includes dry loose finely ground particles of a mixture of ground dry...

more
Issue 2021-6 US 2021/0179492 A1

Method for preparing an ettringite binder for producing construction materials

(22) 07.11.2018 (43) 17.06.2021 (57) A method for preparing an ettringite binder from an aluminosilicate source, a calcium sulfate source and a calcium hydroxide (or slaked lime, CH) source, the...

more
Issue 2021-8 US 2021/0269321 A1

Systems and methods to recover value-added materials from gypsum

(22) 15.05.2021 (43) 02.09.2021 (57) Disclosed herein are systems and methods from processing flue gas desulfurization (FGD) gypsum feedstock and ash feedstocks, either separately or together. FGD...

more
Issue 2021-8 WO 2021/180594 A1

Slag-based hydraulic binder, dry mortar composition comprising same and system for activating a slag-based binder

(22) 05.03.2021 (43) 16.09.2021 (57) The aim of the invention is to provide a hydraulic binder based on ground granulated blast-furnace slag, devoid of Portland cement, which enables improved setting...

more