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Nickel smelting device and nickel smelting method

A technology of nickel matte and smelting zone, which is applied in the field of nickel smelting equipment, can solve the problems of adding large vulcanizing agent, poor dilution effect, complicated process, etc., and achieves the effects of good environmental protection conditions, stable production, and simple operation

Active Publication Date: 2021-06-22
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to provide a nickel smelting device and a nickel smelting method to solve the problems of complex process, poor depletion effect, high energy consumption, and the need to add a large amount of vulcanizing agent in nickel smelting in the prior art.

Method used

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  • Nickel smelting device and nickel smelting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] use figure 1 The shown nickel smelting device processes nickel concentrate, and the structural parameters are as follows: Among them, L’ / L is 0.12; L 1 : L 2 :L 3 It is 18: 6: 9 (the definitions of each letter are the same as above). The nickel smelting steps are as follows:

[0064] S1, dry and finely grind nickel concentrate (containing Ni8.91%, containing Cu 5.35%, containing 0.35% Co, containing Fe35.77%, containing MgO7.89%), quartz sand flux, soot and launder shell After being mixed, it is used as nickel-smelting raw material, sprayed into the furnace through the concentrate nozzle, the particle size of the raw material is ≤1mm, and the ratio is concentrate: flux: return material = 100: 26: 7.6.

[0065] S2, nickel smelting raw materials enter the flash smelting reaction tower, and undergo flash smelting reaction in the presence of the first oxygen-enriched air (oxygen volume content is 80%) to generate smelting products and smelting flue gas, flash smelting r...

Embodiment 2

[0072] use figure 1 The shown nickel smelting device processes nickel concentrate, and the structural parameters are as follows: Among them, L’ / L is 0.14; L 1 : L 2 :L 3 It is 18: 8: 9 (the definitions of each letter are the same as above). The nickel smelting steps are as follows:

[0073] S1, dry and finely grind nickel concentrate (containing 13% Ni, 1.35% Cu, 0.4% Co, 37% Fe, 1.3% MgO), quartz sand flux, and system return materials to be used as nickel smelting The raw material is sprayed into the furnace through the concentrate nozzle, the particle size of the raw material is ≤1mm, and the ratio is concentrate: flux: return material = 100: 28: 7.5.

[0074] S2, nickel smelting raw materials enter the flash smelting reaction tower, and undergo flash smelting reaction in the presence of the first oxygen-enriched air (oxygen volume content is 80%) to generate smelting products and smelting flue gas, flash smelting reaction tower The temperature of the inner cavity is 14...

Embodiment 3

[0081] use figure 1 The shown nickel smelting device processes nickel concentrate, and the structural parameters are as follows: Among them, the sedimentation tank does not have a spray gun, and L1:L2:L3 is 18:6:9 (the definitions of each letter are the same as above). The nickel smelting steps are as follows:

[0082] S1, dry and finely grind nickel concentrate (containing 5.25% Ni, 4.6% Cu, 0.34% Co, 41% Fe, 7.85% MgO), quartz sand flux, and system return material to be used as nickel refining The raw material is sprayed into the furnace through the concentrate nozzle, the particle size of the raw material is ≤1mm, and the ratio is concentrate: flux: return material = 100: 33: 7.5.

[0083] S2, nickel smelting raw materials enter the flash smelting reaction tower, and undergo flash smelting reaction in the presence of the first oxygen-enriched air (oxygen volume content is 80%) to generate smelting products and smelting flue gas, flash smelting reaction tower The temperatu...

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Abstract

The invention provides a nickel smelting device and a nickel smelting method. The nickel smelting device is an integrated equipment, which includes a smelting zone, a depletion zone and a settling zone connected horizontally in sequence, wherein the smelting zone includes a flash smelting reaction tower and a Sedimentation tank; flash smelting reaction tower is used for flash smelting nickel-smelting raw materials under the action of the first oxygen-enriched air to produce high-nickel matte, smelting slag and smelting flue gas containing 20-75wt% nickel; depletion The zone communicates with the sedimentation tank, the depleted zone has a plurality of first spray holes, and the depleted zone is also equipped with a plurality of first spray guns corresponding to the first spray holes. The invention can simultaneously take into account the excellent performances of short process flow, good dilution effect, low energy consumption and no need to add a large amount of vulcanizing agent in the nickel smelting process.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a nickel smelting device and a nickel smelting method. Background technique [0002] The pyrometallurgy process commonly used for nickel sulfide concentrate is as follows: the nickel concentrate is sent to the smelting furnace for smelting after material preparation and batching, the low-nickel matte produced by smelting is sent to the blowing furnace for blowing, and the high-nickel matte produced by blowing is cooled and used as Final product, or sent to wet process for further processing. The smelting slag produced by smelting is depleted by the electric furnace or the electrode area is depleted to produce waste slag. The blowing slag produced by blowing can be returned to the smelting furnace for treatment, or returned to the smelting electrode area or the settling electric furnace, or can be treated in a separate depletion electric furnace. If blowing slag is depleted alone, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B23/02C22B5/10C22B5/12
CPCC22B5/10C22B5/12C22B23/025
Inventor 陆金忠万爱东李晓霞齐红斌吴玲杨贵彦刘恺刘诚黎敏李建辉李海春
Owner CHINA ENFI ENGINEERING CORPORATION
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