Method for enriching gold and platinum group metal in process of melting copper-nickel sulfide ore
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A technology for copper-nickel sulfide ore and platinum group metals, which is applied in the direction of improving process efficiency, can solve the problems of effective recovery, permanent loss, waste of rare and precious metal resources, etc., and achieves the effect of shortening the extraction process and reducing the loss of dispersion.
Inactive Publication Date: 2013-07-17
JINCHUAN GROUP LIMITED
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[0003] In the current production process, the primary and secondary nickel concentrates are melted and cast into nickel anode plates through nickel reverberatory furnaces, and electrolytically extracts electrolytic nickel from nickel soluble anodes, and the gold and platinum group metals are dispersed into reverberatory furnace slag, soot, and nickel electrolytic anodes. Gold and platinum group metals in these intermediate products or wastes and waste water have not been effectively recovered , or even permanent loss, resulting in wasted loss of expensive rare metal resources
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Embodiment 1
[0029] Pressure leached iron slag, its chemical composition is: Ni3.59%, Cu1.07%, Fe44.20%, Co0.12%, S4.22%, SiO 2 9.01%, Au99.2g / t, Pd91.3g / t, Pt124g / t, Rh+Ir+Os+Ru79g / t;
[0030]Nickel concentrate, its chemical composition is: Ni65.05%, Cu3.05%, Fe1.85%, Co1.12%, S22.22%,, SiO 2 1.61%, Au+Pd+Pt=8g / t;
[0031] The mass fraction of each material: 100kg (%) of pressure leached iron slag, 20kg (%) of nickel concentrate, 25kg (%) of quartz powder, 10kg (%) of borax, 15kg (%) of soda ash, 8kg (%) of coke powder;
[0032] Chemical composition of precious metal matte: Ni56.31%, Cu6.87%, Fe5.00%, Co0.30%, S20.87%, SiO 2 4.30%, Au309g / t, Pd222g / t, Pt316g / t, Rh+Ir+Os+Ru215g / t;
[0033] Chemical composition of smelting slag Ni1.25%, Cu0.16%, Fe19.40%, Co0.13%, S0.30%, SiO 2 30.02%, Au2.31g / t, Pd1.65g / t, Pt2.15g / t, Rh+Ir+Os+Ru7g / t
Embodiment 2
[0035] Pressure leached iron slag, its chemical composition is: Ni2.48%, Cu2.26%, Fe48.70%, Co0.11%, S3.02%, SiO 2 12.01%, Au109.2g / t, Pd97.3g / t, Pt138g / t, Rh+Ir+Os+Ru87g / t;
[0036] Nickel concentrate, its chemical composition is: Ni65.77%, Cu3.23%, Fe2.05%, Co1.13%, S22.26%, SiO 2 1.35%, Au+Pd+Pt=11g / t.
[0037] The mass fraction of each material: 100kg (%) of pressure leached iron slag, 12kg (%) of nickel concentrate, 20kg (%) of quartz powder, 6kg (%) of borax, 10kg (%) of soda ash, 10kg (%) of coke powder;
[0038] Chemical composition of precious metal matte: Ni53.49%, Cu6.34%, Fe7.45%, Co0.35%, S21.17%, SiO 2 4.11%, Au863g / t, Pd745g / t, Pt1110g / t, Rh+Ir+Os+Ru368g / t;
[0039] Chemical composition of smelting slag Ni1.33%, Cu0.19%, Fe25.83%, Co0.17%, S0.42%, SiO 2 24.84%, Au4.50g / t, Pd2.25g / t, Pt3.25g / t, Rh+Ir+Os+Ru8g / t.
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Abstract
The invention provides a method for enriching gold and platinum group metal in the process of melting copper-nickel sulfide ore, relating to the method for enriching the gold and platinum group metal in the process of melting rare noble metal-containing copper-nickel sulfide ore. The method is characterized by comprising the following steps of: performing magnetic separation to a nickel ore concentrate to obtain fine sulfur grain-containing alloy; then performing two-stage atmospheric pressure leaching and one-stage pressure leaching to the fine sulfur grain-containing alloy to obtain gold and platinum group metal-containing pressure leached iron cake; then mixing the pressure leached iron cake and the nickel ore concentrate for performing concentration smelting and water quenching to obtain the gold and platinum group metal-containing water-quenched noble metal sulfonium; and finally delivering the obtained water-quenched noble metal sulfonium to a platinum group metal production line for performing concentration purification procedures, and delivering the smelt slag to perform nickel fire metallurgy-process smelting treatment. The method is simple in technique, the concentration ratio and the recovery rate of the noble metal are high, no environmental pollution exists, the smelting point is low, the energy consumption is less, and the production cost is low.
Description
technical field [0001] A method for enriching gold and platinum group metals in the smelting process of copper-nickel sulfide ore relates to a method for enriching gold and platinum group metals in the metallurgical process of copper-nickel sulfide ore containing rare and precious metals. Background technique [0002] In the metallurgical production process of nickel-copper pyro-wet joint extraction of copper-nickel sulfide ore concentrate containing rare precious metal elements, about 20g / t copper containing gold and platinum group metals is obtained through flash smelting and converter blowing slow cooling After crushing, grinding, grading, magnetic separation, flotation and other processes, the high-nickel matte block can obtain primary alloys, primary nickel concentrates and primary copper concentrates with coarse particle size and low sulfur content. The primary alloy undergoes alloy vulcanization treatment and produces secondary high matte, and the secondary high matte...
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