Journal
CHIMIA
Volume 71, Issue 7-8, Pages 451-460Publisher
SWISS CHEMICAL SOC
DOI: 10.2533/chimia.2017.451
Keywords
Agglomeration energy; Ball mill; Clinker; Comminution; Grinding aids; Molecular dynamics; Polycarboxylate ether (PCE); Sieve residue
Categories
Funding
- Sika Technology AG
- ETH Zurich Foundation
- University of Akron
- National Science Foundation [DMR 0955071]
- Petroleum Research Fund of the American Chemical Society [54135-ND10]
- Swiss Commission for Technological Innovation [KTI 13703.1 PFFLR-IW]
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We present our research findings related to new formulations of the organic additives (grinding aids) needed for the efficient grinding of inorganic solids. Even though the size reduction phenomena of the inorganic solid particles in a ball mill is purely a physical process, the addition of grinding aids in milling media introduces a complex physicochemical process. In addition to further gain in productivity, the organic additive helps to reduce the energy needed for grinding, which in the case of cement clinker has major environmental implications worldwide. This is primarily due to the tremendous amounts of cement produced and almost 30% of the associated electrical energy is consumed for grinding. In this paper, we examine the question of how to optimize these grinding aids linking molecular insight into their working mechanisms, and also how to design chemical additives of improved performance for industrial comminution.
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