[Title 40 CFR 60.171]
[Code of Federal Regulations (annual edition) - July 1, 2009 Edition]
[Title 40 - PROTECTION OF ENVIRONMENT]
[Chapter I - ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)]
[Subchapter C - AIR PROGRAMS (CONTINUED)]
[Part 60 - STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--]
[Subpart Q - Standards of Performance for Primary Zinc Smelters]
[Sec. 60.171 - Definitions.]
[From the U.S. Government Printing Office]


40PROTECTION OF ENVIRONMENT62009-07-012009-07-01false60.171Sec. 60.171PROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCY (CONTINUED)AIR PROGRAMS (CONTINUED)STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--Standards of Performance for Primary Zinc Smelters
Sec. 60.171  Definitions.

    As used in this subpart, all terms not defined herein shall have the 
meaning given them in the Act and in subpart A of this part.
    (a) Primary zinc smelter means any installation engaged in the 
production, or any intermediate process in the production, of zinc or 
zinc oxide from zinc sulfide ore concentrates through the use of 
pyrometallurgical techniques.
    (b) Roaster means any facility in which a zinc sulfide ore 
concentrate charge is heated in the presence of air to eliminate a 
significant portion (more than 10 percent) of the sulfur contained in 
the charge.
    (c) Sintering machine means any furnace in which calcines are heated 
in the presence of air to agglomerate the calcines into a hard porous 
mass called sinter.
    (d) Sulfuric acid plant means any facility producing sulfuric acid 
by the contact process.