Report of Investigations 8958: Recovery of Zircon from Investment Casting Molds

Llewellyn, Thomas O.; Smith, Carl W.

i

Report of Investigations 8958: Recovery of Zircon from Investment Casting Molds

Public Domain

1985/01/01
By Llewellyn, Thomas O. ; Smith, Carl W.
Series: NIOSH Numbered Publications

File Language:

English

Details

Journal Article:

MISSING
Personal Author:

Llewellyn, Thomas O. ; Smith, Carl W.
Description:

The Bureau of Mines conducted physical and chemical beneficiation studies on three samples of waste investment casting molds to devise a method to liberate and recover zircon. Rod mill grinding, autogenous attrition grinding, and caustic leaching were liberation methods investigated. Flotation, gravity separation, and caustic leaching and sizing were recovery methods investigated. Flotation techniques produced concentrates containing up to 74.2 pct zircon with a zircon recovery of 53.4 pct. Gravity concentration produced concentrates containing up to 98.6 pct zircon; however, recovery of the zircon was only 57 pct. Caustic leaching and sizing produced concentrates containing up to 98 pct zircon with attendant recoveries of 81 pct. This report is based upon work done under a memorandum of agreement between the Bureau of Mines, U.S. Department of the Interior, and the University of Alabama. [Description provided by NIOSH]
Subjects:

Metals Mining Occupational Health Safety Waste Management
Source:

MISSING :9 pages
Series:

NIOSH Numbered Publications ; Mining Publications
Subseries:

Report of Investigations
Document Type:

Text
Genre:

Report
Place as Subject:

Alabama ; OSHA Region 4
CIO:

National Institute for Occupational Safety and Health (NIOSH)
Division:

TURC - Tuscaloosa Research Center
Topic:

Workplace Safety & Health
Location:

North America
Pages in Document:

14 pdf pages
NIOSHTIC Number:

nn:10004547
Federal Fiscal Year:

1985
Peer Reviewed:

False
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

urn:sha-512:fc76780a97412595b88c8605bebbc5a511c6975d2ae3e0e6e7ed90bce7f42aba33eb0e2849d677a6473e3041a0c9b71ef6bd18539022933261bc9fe94ed2df6a
Download URL:

https://stacks.cdc.gov/view/cdc/10673/cdc_10673_DS1.pdf
File Type:

[PDF - 3.59 MB ]

File Language:

English

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