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Double rotational flow premix type metallurgical nozzle

A flow pre-mixing and pre-mixing technology, which is applied in the direction of lighting and heating equipment, furnaces, furnace components, etc., can solve the problem that it is difficult to fully mix the gas with the mineral material, and achieve good fluidity and separation effect, low wear and tear. The effect of improving the thermal efficiency of reaction

Active Publication Date: 2012-07-11
JINLONG COPPER
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Problems solved by technology

[0005] The nozzles disclosed in the above-mentioned patent documents all have the problem that the gas is difficult to fully mix with the mineral material. Therefore, the development of a metallurgical nozzle technology and device with a simple structure, good controllability, and uniform and sufficient gas-particle two-phase mixing has good economical, energy-saving and environmental protection. and social benefits

Method used

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  • Double rotational flow premix type metallurgical nozzle
  • Double rotational flow premix type metallurgical nozzle
  • Double rotational flow premix type metallurgical nozzle

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Embodiment Construction

[0017] Such as figure 1 As shown, the double-swirl premixed metallurgical nozzle includes a feed pipe 8 and a central cylinder 4 located in the center of the feed pipe 8 for air intake. The end of the central cylinder 4 is connected with a swirl injector 6 , the gas enters from the central cylinder 4 and is discharged from the end air outlet of the swirl injector 6. The swirl injector 6 is as image 3 shown. The outside of the feed pipe 8 is successively fitted with a partition pipe 3 with an increased diameter and an air cavity pipe 1, the partition pipe 3 is an annular channel, and the front end of the feed pipe 8 is provided with a swirl mixer 5, such as figure 2 As shown, the swirl mixer 5 is provided with several deflectors 51 arranged circumferentially between the two concentric rings 52, 53, so that the air flow between the feed pipe 8 and the dividing pipe 3 is discharged in a swirling flow, and the swirling The deflector 51 of the flow mixer 5 is inclined along...

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Abstract

The invention discloses a double rotational flow premix type metallurgical nozzle which solves the problem that a material in the metallurgical nozzle is not mixed fully with a gas. The double rotational flow premix type metallurgical nozzle comprises a central cylinder of a feed pipe, wherein the feed pipe is externally and sequentially provided with a separating pipe having an increasing diameter and an air cavity pipe in a sleeved manner; a rotational flow mixer is arranged at the front end of the feed pipe; the rotational flow mixer is provided with a plurality of flow guide sheets which are arranged circumferentially between two concentric rings; and the inner wall of the end of the air cavity pipe which enters into a furnace cavity is tapered, so that the gas flowing out rushes to the material which comes from the feed pipe. According to the nozzle disclosed by the invention, the material and the gas are mixed for the second time, so that the mixing is ensured to be sufficient, generation of raw material stack and furnace accretion is avoided, stability of furnace conditions is enhanced, overhaul loss of the furnace conditions is reduced, heat efficiency of the reaction is improved, temperature at the upper part of a reaction tower is improved, and a chassis of a rotational flow type sprayer has low abrasion and no water leakage fault.

Description

technical field [0001] The invention relates to a nozzle for mixing ore material and gas used in the metallurgical industry. Background technique [0002] Flash smelting copper-lead-nickel sulfide ore concentrate powder has remarkable economic, energy-saving and environmental protection benefits. Metallurgical nozzle is the key core equipment of flash smelting process. Nozzles meet the needs of flash smelting with a large amount of feed and give full play to the production potential of existing flash smelting equipment, which is the key for today's enterprises to improve their market competitiveness. Under the production conditions of large feed volume, traditional nozzles (Venturi nozzles and central diffuse nozzles) need to solve the uneven mixing and dispersion of process air and concentrate powder, uneven temperature distribution of reaction tower, low local temperature, and insufficient smelting reaction , low oxygen utilization efficiency, and even abnormal furnace c...

Claims

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Application Information

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IPC IPC(8): C22B15/00F27D3/18
Inventor 宋修明赵荣升刘安明艾元方黄光存戴升弘陈卓
Owner JINLONG COPPER
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