DALMIA INSTITUTE

Cement quality control system: ­application of X-ray diffractometry

Microscopy has been widely used for phase identification and estimation in cement mineralogy. Over time, a few variations of microscopic methods particularly for strength predication have been reported by different laboratories. Recently attempts have also been made to utilize X-ray Diffractometry (XRD) for quality control in cement manufacturing process. This paper presents the salient points of these methods.

1 Introduction

The main features of a cement quality control system involve raw mix composition, burning of the cement clinker, fineness and finally the strength of the cement produced. The ultimate quality of cement primarily depends on the quantity and characteristics of different mineral phases present in it, which in turn are controlled by the raw mix composition and burning process. Identical raw mix compositions even with a more or less similar burning process may not be expected to produce the same mineral assemblages. Hence evaluation of the clinker mineral phases is regarded as very...

Related articles:

Issue 7-8/2017 WO 2017/080874 A1

Method for producing cement clinker

(22) 02.11.2016 (43) 18.05.2017 (57) In the method according to the invention, the cement clinker is produced by preheating, pre-calcinating and burning raw cement meal, wherein a portion of the raw...

more
Issue 12/2018 WO 2018/153678 A1

Installation for producing cement clinker and method for operating such an installation

(22) 08.02.2018 (43) 30.08.2018 (57) The invention relates to a method for operating an installation (10) for producing cement clinker, said installation having a pre-heater (12) for pre-heating...

more
Issue 6/2015 WO 2015/037594 A1

Method for producing Portland cement­ clinker

(22) 03.09.2014 (43) 19.03.2015 (57) In this method for producing a Portland cement clinker, the proportion of silico-manganese slag used in a starting-material mixture is set so as to be 2-10 mass%....

more
Issue 7-8/2016 WO 2016/082936 A1

Clinker substitute material made of aluminium silicate and dolomite

(22) 17.11.2015 (43) 02.06.2016 (57) The invention relates to a method for producing a clinker substitute material comprising the steps: providing a starting material containing dolomite and aluminium...

more
Issue 11/2018 WO 2018/147909 A1

Early strength enhancement of cements

(22) 25.10.2017 (43) 16.08.2018 (57) A method of making a cement composition, comprising grinding a cement clinker and a strength-enhancing agent, thereby producing a hydraulic cementitious powder,...

more