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Use of Montana chromite as a foundry molding material.

Authors
Sanders-SD; Sullivan-GV
Source
Trans Am Foundrymen's Soc 1976 Jan; 52:65-72
NIOSHTIC No.
10009916
Abstract
An investigation was conducted by the federal Bureau of Mines to determine the feasibility of using domestic chromite as a molding material for ferrous castings. A submetallurgical-grade chromite was obtained from a stockpile near Nye, Montana, and characterized with respect to grain size and chemical and mineralogical composition. Tests indicated that the cr2o3 content of the material could be increased from 42 to 44 pct by high-tension electrostatic separation. This upgraded material approached the Steel Founders' Society of America (SFSA) molding material specifications with respect to chemical composition, ph, acid demand and loss on ignition. Comparisons of the thermal expansion and fusion points of the upgraded material with a commercial sample were found to be essentially identical.
CODEN
TAFOA6
Publication Date
19760101
Document Type
OP; Journal Article
Fiscal Year
1976
NTIS Accession No.
NTIS Price
Identifying No.
OP 51-76
ISSN
0065-8375
NIOSH Division
TURC
Source Name
Transactions of the American Foundrymen's Society
State
MT; AL
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