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Alumina process feasibility study and preliminary pilot plant design. Task 1 final report. Comparison of six processes.

Authors
Bengtson-KB; Chuberka-P; Malm-LE; McLaughlin-AE; Nunn-RF; Stein-DL
Source
Reno, NV: U.S. Department of the Interior, Bureau of Mines, J0265048, 1977 Sep; :1-253
Link
NIOSHTIC No.
10011110
Abstract
This study compares six nonbauxitic alumina processes with the objective of selecting the two most promising candidate processes for further study. The comparisons cover both technical and economic aspects of alumina process plants of commercial size in the United States. The processes considered were hydrochloric acid-clay (evaporative and gas-induced crystallization), nitric acid-clay, sulfurous acid-clay, anorthosite-lime sinter, and alunite. Technical appraisals for each process complete with process descriptions, heat and material balances, flowsheets, and equipment lists have been prepared based on published information available through the Bureau of Mines miniplant program and other nonproprietary sources. Technical and economic comparisons are made from which conclusions can be drawn for selecting the two most promising processes. This is the first study of a three-part program. See also OFR's 49-78 and 122(1)-(6)-80.
Keywords
Aluminum; Extractive metallurgy; Clays; Economic analysis; Leaching; Nitric acid; Hydrochloric acid; Sulfuric acid; Sintering; Calcium oxides; Roasting; Reduction chemistry; Aluminum oxide; Precipitation chemistry; Capitalized costs; Mining; Assessments; Pilot plants; Process charting; Operating costs; Alunite; Anorthosite; Contingency planning
Publication Date
19770901
Document Type
CP; Final Contract Report
Fiscal Year
1977
NTIS Accession No.
PB-286638
NTIS Price
A13
Identifying No.
OFR 18-78; Contract-J0265048
NIOSH Division
RERC
Source Name
Reno, NV: U.S. Department of the Interior, Bureau of Mines, J0265048
State
NV; DC
Performing Organization
Kaiser Engineers, Inc., Oakland, CA
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