Rotational flow nickel smelting method and rotational flow nickel smelting device
A smelting method and technology for a smelting device are applied in the field of rotary floating nickel smelting device and rotary floating nickel smelting, which can solve the problems of pollution treatment capacity, large energy consumption, insufficient reaction, etc., achieve high oxygen utilization rate and improve direct yield. , good heating effect
Active Publication Date: 2017-03-22
YANGGU XIANGGUANG COPPER
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Problems solved by technology
In the above method, because the nozzle of the flash blowing adopts Venturi and central diffusion nozzle, it has segregation and insufficient reaction, and the generated slag contains Fe 3 o 4 and high copper-nickel, low-grade nickel matte and other issues; using PS converter blowing, there is low SO 2 The disadvantages of serious pollution and limited processing capacity; and the method of blowing the top blowing molten pool has the disadvantages of low production efficiency and large energy consumption.
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[0047] The invention provides a rotary floating nickel smelting device, which can further improve the smelting effect of nickel sulfide.
[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0049] Such as Figure 1-Figure 4 As shown, the rotary-floating nickel smelting device provided in the embodiment of the present invention mainly includes a feed pipe 3, a smelting furnace 4 (in this embodiment, the smelting furnace 4 is specifically a flash furnace) and a feed pipe 3 connected to the smelting furnace 4 Th...
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The invention discloses a rotational flow nickel smelting method. The rotational flow nickel smelting method comprises following steps: a mixed material is delivered into a reaction tower through a material channel; reaction gas is converted into rotational flow, and is delivered into the reaction tower through a rotational flow channel and a Venturi channel; a solid reducing agent is sprayed into a settling pond so as to form a reducing agent floating layer; the rotational flow processed via high speed expansion is subjected to contact reaction with the mixed material in the reaction tower; obtained molten drops are subjected to reaction with the reducing agent floating layer so as to obtain nickel and slag, and nickel matte is obtained via separation; generated high temperature gas is ignited by a burning gun in an uptake flue, and residual gas is discharged from a smelting furnace into a heat recovery boiler. The rotational flow nickel smelting method possesses following advantages: full smelting reaction is realized, oxygen utilization rate is high, reaction gas with an oxygen-enriched concentration can be adopted, requirements of large fluctuation of feeding amount are satisfied, and energy yield is increased obviously. The invention also provides a rotational flow nickel smelting device suitable for the rotational flow nickel smelting method.
Description
technical field [0001] The invention relates to the technical field of pyrometallurgy of non-ferrous metals, in particular to a method for smelting rotary-floating nickel. The invention also relates to a device for smelting rotary-floating nickel suitable for the above-mentioned method for smelting nickel. Background technique [0002] Nickel sulfide concentrate generally contains 1% nickel, and the grade of nickel sulfide concentrate can reach 6% to 12% after beneficiation and enrichment, and is also rich in a certain amount of other valuable metals, such as copper, cobalt, gold, silver and other precious metals , while also containing higher levels of iron and magnesium oxide. [0003] At present, the nickel sulfide concentrate matte smelting process is the main method of nickel pyrometallurgy at present, and there are three main operation forms: 1. Flash smelting-flash blowing to obtain high-nickel matte; 2. Flash smelting- PS converter blowing to obtain high-nickel matt...
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Login to View More IPC IPC(8): C22B23/02
CPCC22B23/02
Inventor 周松林葛哲令王志普
Owner YANGGU XIANGGUANG COPPER