Hydraulic additive as a new
“clinker substitute”

During the last four years, a hydraulic additive has been developed as a clinker substitute in the course of a research project at the Wopfinger Baustoffindustrie GmbH. The goals of the project were to provide the cement industry with an effective opportunity to  reduce its CO2-emissions, to achieve economic advantages and to be able to produce the new product in existing cement plants.

1 Introduction

There are three ways to reduce the total CO2 emission: Because of the energy-intensive decomposition of CaCO3, a reduction of the lime standard when burning clinker, to reduce the amount of fuel, and a lower power consumption for the subsequent grinding of cement. In addition to these significant ecologic and economic advantages, important primary raw material savings are realised thanks to the reduced limestone content. The burned clinker substitute contains a higher percentage of silicium- and aluminium-compounds compared with Portland cement clinker. These components often...

Related articles:

Issue 2018-10 KR101879727 (B1)

Eco-friendly low-active CSA-based cement to replace ordinary Portland cement (OPC)

(22) 06.07.2017 (43) 18.07.2018 (57) The present invention relates to an eco-friendly, low-activity CSA-based cement which can replace ordinary Portland cement using limestone and industrial by-...

more
Issue 2016-12 NATIONAL RESEARCH CENTRE EGYPT

Effect of oil shale additions on the raw mix and clinker for high belite cement

1 Introduction High belite cements are characterized by their relatively high content of belite and low content of alite without sacrificing the early strength in mortar and concrete. For high belite...

more
Issue 2011-10

Alternative fuels in the cement industry

In the following, concepts are introduced based on the mechanical, physical and thermal processing of substitute fuels. With increasing international cost pressures not only the applications of...

more
Issue 2020-10 KR20200076340 (A)

Low carbon low burning cement clinker and preparing method thereof

(22) 19.12.2018 (43) 29.06.2020 (57) The present invention is a low-temperature calcined cement clinker comprising Iimit and calcium silicate, the cement clincher is a low-grade limestone having a CaO...

more
Issue 2013-7-8

The future of cement and fossil fuel ­during the next 100 years

The indispensible energy resources for cement manufacturing are coal and electric energy. While electric energy is used to operate the machinery and equipment, coal energy is used as thermal energy....

more