LOW HOOD OF AN OPEN ORE REGENERATING ELECTRIC FURNACE Russian patent published in 2006 - IPC F27D1/00 C22C33/04 

FIELD: the invention refers to metallurgy namely to elements of construction of an open ore regenerating furnace for preliminary production of crystal silicon and ferrosilicon.

SUBSTANCE: the low hood of an open ore regenerating electric furnace has a lid, lateral walls and a mobile screen. On the lid it has openings for current inputs and leaking pipes. On lateral walls it has intaking windows of gas conduits and branch pipes for feeding blast-furnace gases with overlapping of the gap between the flange of the furnace and the lateral windows of the hood with a mobile screen. The hood is fulfilled in the shape of a stepped pyramid with lateral walls of a smaller diameter and a mobile screen of a larger diameter; the intaking windows of the gas conduits of rectangular cross-section are placed tangentially and directed relatively to each other at 180⁰.

EFFECT: the invention allows to reduce volume of withdrawing gases, reduce ejections from the hood due to organization of directed flow of gases under the hood.

2 cl, 3 dwg