The Impact Of Air Pollution Laws On the Small Foundry

Abstract

The paper briefly describes the foundry industry and its basic place in the international economy. It compares various air pollution laws in the United States and Canada and the cost of compliance with them for the small foundry. Large foundries, usually captive ones, operated by large industries are not considered because the cost of control equipment for them does not present the serious financial problem confronting the small shop. The effluents from the gray iron cupola are the most difficult to control when one compares them with those from electric melting furnaces. The question of why gray iron foundries do not replace cupolas with electric melting furnaces is answered by presenting an analysis of cupola melting costs vs electric melting costs.it has to be cheaper to melt iron with a cupola than with electric furnaces. If a small foundry could afford the cost of electric furnaces, electric sub-station and increased melting costs, it could afford to continue using a cupola equipped with a bag house....