| A Comparative Study of some Methods of Compaction
of Mixes of Dry Press Consistency |
H. P. S. MURTHY, M. C. KUNDRA AND H. V. BHASKAR RAO
Pages : 35-44
DOI : 10.1080/0371750X.1965.10855516 |
| Abstract |
| Compaction f!f clay grog mix of dry press consistency studied by (i) bumping under the mixs
own weight, (ii) ramming with low load rammer, (iii) pressing in a die in a hydraulic press and
(iv) by impacts from aforge hammer. Tamping with a low load rammer improves the bulk density
by two per cent on that obtained by the method (i). By employing the methods (iii) and (iv), the
bulk density increased by 19 and 25 per cent respective!)! over that obtained by the method (i).
The rate of increase of bulk density with the work factor p is,
dBD
dp-=K(BD00 -BDp),
where BD00 is the maximum possible increment in bulk density, BDp is the increment in bulk
density under work factor p and K is a proportionality constant. In all the methods of compaction
studied, the mechanism can be assumed to be the same as those operating in the compaction of dry
powders studied earlier and their relative importance varies with the method of compaction adopted. |
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