A suspension melting furnace nozzle

Abstract

The invention provides a suspension melting furnace nozzle, comprising a central oxygen pipe, a premixing wind annular pipe and a discharging elephant trunk which sleeve in sequence from inside to outside. The length of the remixing wind annular pipe is 1 / 3-1 / 2 of that of the central oxygen pipe; the length of the discharging elephant trunk is 1.1-1.6 times that of the premixing wind annular pipe; a premixing wind cyclone device is arranged at the inside of the lower end of the premixing wind annular pipe; the premixing wind cyclone device comprises a plurality of first flow guide blades connected to the inner wall of the premixing wind annular pipe; the included angles between the first flow guide blades and the tangent line of the inner wall of the premixing wind annular pipe are 120-160 degrees. The suspension melting furnace nozzle adopts a wind material interlayer layout mode, and has the beneficial effects of good control property and gas and particle two-phase mixing uniformity. Rotary gas flows and concentrate particles sprayed from the premixing wind annular pipe and the discharging elephant trunk are premixed before entering the furnace, the gas and particle two-phase mixture system entering the reaction furnace is uniform, the ignition position of the concentrate particles is heightened, the conduction of melting reaction is accelerated, and the melting efficiency is improved.

Description

Technical field [0001] The invention relates to the field of metallurgical industrial equipment, in particular to a suspension smelting furnace nozzle. Background technique [0002] Suspension smelting is mainly to make full use of the huge active surface of the finely ground material, so that the dry solid material particles are in contact with oxygen in the reaction furnace. Under high temperature conditions, the controllable oxidation reaction is completed at a very high speed, releasing a lot of heat, and realizing self-heating. Smelt. Suspension smelting has the advantages of high productivity and significant environmental benefits, and its typical representatives are the flash smelting process of copper and nickel metals and the lead smelting process of Kiefset. [0003] Metallurgical nozzles are the core equipment of the suspension smelting process, mainly including Venturi type concentrate nozzles and central jet type concentrate nozzles. At present, most of the suspensio...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a suspension smelting furnace nozzle to solve the above-mentioned technical problem of uneven mixing of concentrate and oxygen

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