Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Evaluation of commercial U.S. grinding balls by laboratory impact and abrasion tests.

Authors
Blickensderfer-RA; Tylczak-JH
Source
Miner Metall Process 1989 May; :60-66
Link
NIOSHTIC No.
10007199
Abstract
Impact and abrasion properties of various commercial grinding balls were evaluated and compared by the U.S. Bureau of Mines. Laboratory tests were conducted on balls obtained from eight major U.S. manufacturers. The balls included forged steel, cast steel, and alloyed white cast iron and were subjected to repeated impacts until they broke or until 300,000 impacts were exceeded. Pin abrasion tests also were conducted. The results showed wide differences in impact lives, ranging from a few thousand to over 500,000 impacts. The life of inferior commercial balls was increased five to six times by a laboratory tempering heat treatment. For balls that did not break, the major impact wear mode was spalling and ranged from an average rate of 0.28 to 4.46 Mg per impact. The softest balls (steel) had excellent impact resistance but low abrasion resistance. The abrasion resistance of the steel balls generally increased with hardness. The alloyed white cast irons had about twice the abrasion resistance of the steel balls. Users should become aware of the wide variations among commercial balls, and ball manufacturers should be aware that their product can be improved.
CODEN
MMPRE8
Publication Date
19890501
Document Type
OP; Journal Article
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Identifying No.
OP 149-89
ISSN
0747-9182
NIOSH Division
ALRC
Source Name
Minerals & Metallurgical Processing
State
OR
TOP