Novel Materials and Directed Crystal Engineering for Continuous Eutectic Freeze Crystallization (EFC) Applications
COALTECH Project Number: E2022-1
By Department of Chemical Engineering, University of Cape Town | December 2025
R1500,00
Description
The study evaluates eutectic freeze crystallization (EFC) as a treatment technology for hypersaline industrial brines, focusing on mitigating ice scaling and improving ice–salt separation. It demonstrates that polypropylene graphite (PP-GR) significantly reduces ice scaling particularly in MgSO₄-rich and concentrated brines enabling longer, continuous ice production and outperforming stainless steel. While operating conditions such as increased mixing intensity and heat transfer improved ice recovery, ice purity remained limited due to fine crystal formation, requiring post-washing for meaningful purity enhancement.
Related Products
Dry Screening Tests Conducted With a Bivi-tec Screen
2008
Screening trials at two South African collieries, one on a small test unit and one on a full scale installation, for plant staff handling fine, damp coal.
What this report foundFine coal was screened at small apertures while surface moisture stayed below about 5 per cent.
R1500,00
200820 pages
Fine coal was screened at small apertures while surface moisture stayed below about 5 per cent. Above that, fines adhered to the coarser particles and screening became very difficult. The dual vibrating polyurethane mats stopped blinding and clogging, so screening area stayed available, but the screen action still could not dislodge fines from very damp coal.
Evaluation of Ground Geophysical Techniques on the Waterberg Coal Fields
2008
Interim account of trial ground surveys along a profile in the Waterberg coalfield, for exploration geologists weighing survey cost against the structural detail mine planning needs.
What this report foundElectrical and electromagnetic ground surveys were run over a Waterberg profile with borehole logs and three dimensional seismic data as control, to test...
R1500,00
Electrical and electromagnetic ground surveys were run over a Waterberg profile with borehole logs and three dimensional seismic data as control, to test whether cheaper methods can match seismic reflection for locating coal and faults. Resistivity tomography at two electrode spacings, frequency and time domain electromagnetics, controlled source audio magnetotellurics and magnetics were all acquired. Results are preliminary.