Abstract
The bottleneck in the process for increasing production of low CO2 mineral binders, based on BCSA (belite sulfoaluminate) clinkers, is the availability of Al-rich raw materials. For that purpose, a new registry of Al-containing secondary mineral residues (industrial and mine waste) has been developed and is presented in this paper. The methodology of creating the registry consists of three main steps: Gathering ideas, consolidation of ideas, and implementation. In order to achieve this, the following methodology was adopted: Analysis of similar registries by potential end-users and seeking potential solutions and tools to be used, and conducting 3 rounds of stakeholder consultations via workshops in order to determine crucial parameters and features the registry needs to contain. The key discussion points were about which data the registry needs to contain, who shall be the potential users, and what are the stakeholder’s expectations from the registry’s portal. Potential individual registry variables were identified as being relevant/irrelevant or available/unavailable, and potential solutions for the registry’s sustainability were explored. Each Al-rich waste/residue data entry is divided into 10 slots, describing legal status, location, quantities, chemical (REE included), mineralogical, physical and radiological properties, life-cycle assessment, additional data, and data relevancy. The registry will act as a matchmaking tool between producers/holders of Al-rich secondary raw materials and potential producers of cement clinkers.
Highlights
The global cement consumption is expected to reach 4.42 billion tons in 2021, with a growth of 2.96% between 2018–2021 [1], or more than 500 kg per capita
The aim of this paper is to present the whole process of creating the registry of Al-rich wastes and by-products, which was designed in many stages, including organization of workshops, consultations with stakeholders, and registry implementation
At the project’s preparation stage, the following raw materials were considered as the primary target materials for the registry, and the steps were subordinated : Slags, ashes, construction and demolition wastes, wastes connected with the extraction and processing of mineral resources, and other wastes or by-products created at different industrial processes
Summary
The global cement consumption is expected to reach 4.42 billion tons in 2021, with a growth of 2.96% between 2018–2021 [1], or more than 500 kg per capita. The most used cements globally are based on Portland clinkers, which are synthesized at around 1450 ◦ C. CO2 emissions, which are released during the burning of fuels to reach sintering temperature and breakdown of carbonates in the process, are the ones worth mentioning. A lot of studies have been focused to reduce such footprints by using alternative cement binders. One of such binders are cements based on Al-rich belite sulfoaluminate (BCSA)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
