Copper smelting continuous blowing furnace oxygen lance nozzle

Abstract

The invention relates to a copper smelting continuous blowing furnace oxygen lance nozzle. The nozzle comprises an oxygen lance nozzle shell and an oxygen lance nozzle core body and is characterized in that the oxygen lance nozzle core body is of a three-layer concentric sleeve structure, an annular area defined between a central pipe and an inner drainage pipe and an annular area defined betweenthe inner drainage pipe and an outer drainage pipe are both provided with partition walls in the circumferential direction at equal intervals, the partition walls divide the space between the centralpipe and the inner drainage pipe and the space between the inner drainage pipe and the outer drainage pipe into spray holes which are distributed at equal intervals and are provided with fan-shaped sections, and based on a cross section of the oxygen lance nozzle shell, the hole opening rate of the oxygen lance nozzle ranges from 38.5%-38.8%. The oxygen lance nozzle has the advantages that an oxygen lance with the oxygen lance nozzle is used for a copper smelting continuous blowing furnace, the oxygen supply intensity is large, the speed of desulfurization and deferrization is high, the blowing time is short, oxygen can be sufficiently utilized, the amount of SO3 generated by excess oxygen can be reduced, the amount of dilute acid treated for production of one ton of copper is reduced by 0.1kg, the oxygen of the oxygen lance is sufficiently combusted, and the yield can be increased by 10%.

Description

technical field [0001] The invention relates to an oxygen lance nozzle of a copper smelting continuous blowing furnace, belonging to the technical field of oxygenation equipment for copper matte blowing by fire method in nonferrous metal smelting. Background technique [0002] With the globalization of the economy, my country's copper smelting technology is rapidly updating and developing. Among various technical updates, copper smelting adopts oxygen-enriched bottom-blown smelting + oxygen-enriched bottom-blown continuous blowing + refining rotary furnace smelting process (referred to as triple furnace) is an advanced and practical process. Oxygen-enriched bottom-blown continuous blowing oxygen lance is the key equipment in the copper smelting process of three continuous furnaces. It is related to the expansion of production capacity, the improvement of oxygen utilization rate, the improvement of product quality, the reduction of production costs, safety and environmental p...

AI Technical Summary

Problems solved by technology

This design nozzle has only 5-6 nozzle holes, the ratio of oxygen to air is not appropriate, the distribution density of oxygen is not enough, the utilization rate of oxygen is low, the time of iron removal and sulfur removal is long, the blowing time is prolonged, and the output per unit time is also reduced.

This kind of oxygen lance can not achieve the purpose of energy saving and emission reduction, except cost

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