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Top-side composite smelting direct nickel smelting device

A direct, molten pool smelting technology, applied in the field of metallurgy, which can solve the problems of high energy consumption, low energy utilization rate, and high raw material feeding conditions

Inactive Publication Date: 2021-09-07
JINCHUAN GROUP LIMITED
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  • Abstract
  • Description
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Problems solved by technology

[0009] Aiming at the above-mentioned technical problems, the present invention provides a top-side compound smelting direct nickel smelting device, aiming at the high conditions for feeding raw materials into the furnace, high smelting slag containing valuable metals, high energy consumption, and energy utilization efficiency in the DON process in the prior art. low problem

Method used

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  • Top-side composite smelting direct nickel smelting device

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Embodiment 1

[0044] equipment such as figure 1 As shown, the specific process is as follows:

[0045] (1) Nickel sulfide concentrate ingredients: nickel sulfide concentrate (containing 6.52% Ni, 3.12% Cu, 0.20% Co, 30.8% Fe, 8.3% MgO), quartz flux, Reductant (lump coal), device return material (chute slagging, ladle slag, smoke) are batched by quantitative feeder, and the weight ratio of each material is about: nickel concentrate: quartz stone flux: first reducing agent = 100: 12.5:2.0, after batching, the mixed material is transported to the top of the melting furnace through the belt conveyor, and is fed into the furnace through the double-point feeding port 2 on the top of the furnace through the moving belt conveyor.

[0046] (2) After batching, the mixed concentrate undergoes a series of chemical events such as decomposition and oxidation with the oxygen-enriched air blown into the molten pool in the smelting zone 8 of the molten pool to generate high-nickel matte, smelting slag and ...

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Abstract

The invention discloses a top-side composite smelting direct nickel smelting device which comprises a furnace body. A secondary combustion area, a smelting reduction area and a molten pool smelting area are sequentially arranged in the furnace body from top to bottom, a double-point feeding port and a top blowing spray gun are arranged at the top of the furnace body, the double-point feeding port is correspondingly connected with a raw material conveying mechanism, a smoke treatment mechanism is arranged on a smoke outlet in the top of the furnace body, a nickel matte opening is formed in one side of the bottom of the furnace body, a slag discharging opening is formed in the other side of the bottom of the furnace body, and a side blowing spray gun is arranged on the side wall of the furnace body. The problems of high raw material charging condition, high valuable metal content in smelting slag, high energy consumption and low energy utilization rate in a DON process in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a top-side compound smelting direct nickel smelting device. 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 The final product, or sent to the wet process for direct 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 i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/02
CPCC22B23/02
Inventor 姚树明于英东孙治忠何强屈永保乐国斌刘想成王砚林王旭滨唐伟栋魏开栋杨晓祥
Owner JINCHUAN GROUP LIMITED
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