New Magnetite PhD Study at University of Pretoria

New study launched: finding the optimum magnetite grade for cement replacement

A potential avenue for reducing environmental impact of magnetite processing

As a magnetite company, we are always excited about new magnetite-related discoveries and are therefore proud to sponsor PhD student, Megan Weyers, from the University of Pretoria, as she sets out to evaluate the influence of magnetite on the properties of modified cementitious composites.

One of the main focusses of her study is to determine the optimum percentage of fine magnetite particles that can be used as Portland cement replacement in concrete. Another area of Megan’s study, which we find particularly interesting, will be looking at an avenue that could potentially reduce the environmental impact of magnetite processing.

Good luck with the study Megan – we are looking forward to hearing about your findings! 🔬

mm	microns
1	1000
0.85	850
0.71	710
0.6	600
0.5	500
0.425	425
0.355	355
0.3	300
0.25	250
0.212	212
0.18	180
0.15	150
0.106	106
0.075	75
0.063	63
0.053	53
0.045	45
0.038	38
0.025	25
0.02	20

mm	microns
1	1000
0.85	850
0.71	710
0.6	600
0.5	500
0.425	425
0.355	355
0.3	300
0.25	250
0.212	212
0.18	180
0.15	150
0.106	106
0.075	75
0.063	63
0.053	53
0.045	45
0.038	38
0.025	25
0.02	20

inches	US Mesh	Tyler Mesh
0.0394	18	16
0.0335	20	20
0.028	25	24
0.0236	30	28
0.0197	35	32
0.0167	40	35
0.014	45	42
0.0118	50	48
0.0098	60	60
0.0083	70	65
0.0071	80	80
0.0059	100	100
0.0042	140	150
0.003	200	200
0.0025	230	250
0.0021	270	270
0.0018	325	325
0.0015	400	400
0.001	500	-
0.0008	635	-

inches	mm	microns	US Mesh	Tyler Mesh
0.0394	1	1000	18	16
0.0335	0.85	850	20	20
0.028	0.71	710	25	24
0.0236	0.6	600	30	28
0.0197	0.5	500	35	32
0.0167	0.425	425	40	35
0.014	0.355	355	45	42
0.0118	0.3	300	50	48
0.0098	0.25	250	60	60
0.0083	0.212	212	70	65
0.0071	0.18	180	80	80
0.0059	0.15	150	100	100
0.0042	0.106	106	140	150
0.003	0.075	75	200	200
0.0025	0.063	63	230	250
0.0021	0.053	53	270	270
0.0018	0.045	45	325	325
0.0015	0.038	38	400	400
0.001	0.025	25	500	-
0.0008	0.02	20	635	-