NAICS Code 33131: Alumina Refining and Primary Aluminum Production

The NAICS code for Alumina Refining and Primary Aluminum Production is 33131.

Alumina Refining and Primary Aluminum Production establishments convert bauxite into alumina via the Bayer process and smelt alumina into primary aluminum via electrolytic reduction.

Alumina Refining and Primary Aluminum Production (NAICS 33131) is part of NAICS 3313 — Alumina and Aluminum Production, which contains 3 industries.