Oxygen-rich redox furnace

Abstract

The invention discloses an oxygen-rich redox furnace which is divided into an oxidation furnace body (1) and a reducing furnace body (2), wherein independent furnace bases (3, 3'), furnace hearths (4, 4'), a water jacket, air nozzles (5, 5'), a siphon port, feed ports (6, 6'), discharge ports (7, 7') and flue ports (8, 8') are arranged on the two furnace bodies; safety ports (9, 9') are arranged at the lowest positions of the furnace hearths (4, 4') in the two furnace bodies; the foundation surfaces of the furnace foundations (3, 3') higher than the part of the reducing furnace body (2) are arranged on the foundation surfaces of the furnace foundations (3, 3') of the part of the oxidation furnace body (1); the discharge port (7) of the oxidation furnace body part is connected with the feed port (6') of the reducing furnace body part through a chute (10); and a viscous slag port (11) is formed on the outer side surface of the furnace hearth (4) of the part of the oxidation furnace body (1). The oxygen-rich redox furnace disclosed by the invention can solve the problems or defects of inconvenience in terms of equipment manufacturing, transportation, mounting and operation, and also can make use of the heat energy generated by an oxidation reaction to reduce the consumption of energy and accessories; and meanwhile, the oxygen-rich redox furnace also has the advantages that high-concentration smoke is used for preparing acid, the furnace accretion is convenient to dispose and the like.

Description

technical field

[0001] The invention is a smelting equipment for processing bismuth concentrate, lead concentrate or lead-bismuth mixed concentrate, especially an oxygen-enriched redox furnace. Background technique

[0002] In the field of bismuth smelting, reverberatory furnaces, blast furnaces and converters are currently used. The above-mentioned equipment has problems such as high energy consumption, large consumption of auxiliary materials, high cost, and inability to produce acid from flue gas. The smelting process of lead concentrate includes oxygen-enriched bottom blowing, oxygen-enriched top blowing, QLS oxygen bottom blowing furnace lead smelting, etc. instead of the traditional sintering-blast furnace lead smelting process. The QLS oxygen bottom-blown furnace lead smelting method is to put lead-containing materials directly into the cylindrical furnace, and obtain high-lead slag through 90% industrial oxygen oxidation and smelting, and the high-lead slag flows int...

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