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Olivine Foundry Sand from North Carolina Dunite by Differential Grinding.

Authors
Lamont-WE; Sullivan-GV; Davis-EG; Sanders-SD
Source
Fall Mtg & Exh Soc Min Eng AIME October 19-21, 1977, St. Louis Missouri. SME Preprint 77-H-369 :22 pages
Link
NIOSHTIC No.
10009675
Abstract
As part of its program to minimize mineral and metal needs, the federal Bureau of Mines conducted investigations to determine the feasibility of producing foundry-sand-grade olivine concentrates from low-grade sources. Using a Bureau-patented attrition-grinding technique, concentrates meeting Steel Founder's Society of America (SFSA) specifications for loss on ignition (loi) were prepared. Studied showed that green strengths and tensile strengths of the attrition-ground olivine were equivalent or superior to those of commercial materials. Metal-casting studies showed that molds of attrition-ground olivine produced better surface finishes. The improved surface finishes were attributed in part to increased grain sphericity.
Publication Date
19770101
Document Type
OP;
Fiscal Year
1977
NTIS Accession No.
NTIS Price
Identifying No.
OP 107-77
NIOSH Division
TURC;
Source Name
Fall Mtg. & Exh., Soc. Min. Eng., AIME, St. Louis, Missouri, 10/19-21/77, SME Preprint 77-H-369
State
MO; NC;
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