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An Evaluation of Variables in Cupola Operation Using Prepared Automobile Scrap.

Authors
Spironello-VR
Source
For Reference Only At Bureau Libraries :28 pages
Link
NIOSHTIC No.
10009472
Abstract
This federal Bureau of Mines investigation was conducted to evaluate ironmaking variables in a cupola using prepared automobile scrap. This is in keeping with the Bureau goal of improving metal recovery from secondary domestic resources. The effects of 8 variables were determined for 27 responses using a fractional factorial design. The study showed which variables and levels were important for providing improved performance of the cupola and for improved chemistry of the iron. For example, the melting rate may be increased by using smaller coke and a higher airflow rate. Higher tapping temperature may be achieved by using smaller coke and continuous tapping. Carbon pickup may be enhanced by using high air rates, less charge silicon, and smaller coke. Higher limestone in the charge and high air preheat provide lower sulfur content in the metal. Lower addition of silicon, high limestone, and higher air preheat were only marginally effective in decreasing the phosphorus content of the metal. Efforts to verify selected responses of interest were successful.
Publication Date
19790101
Document Type
CP;
Fiscal Year
1979
NTIS Accession No.
NTIS Price
Identifying No.
OFR 8-79
NIOSH Division
TCRC;
Source Name
For Reference Only At Bureau Libraries
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