Process of enriching noble metal from sulfide copper nickle mineral
A copper-nickel sulfide ore and precious metal technology, applied in chemical instruments and methods, process efficiency improvement, solid separation and other directions, can solve the problems of complicated, lengthy, low recovery rate, etc., to prevent dispersion loss, short process flow, The effect of improving the recovery rate
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[0032] Example 1
[0033] The nickel sulfide concentrate with 8% nickel, 4% copper, 2g / t precious metal content and 100t mass is smelted in an electric furnace at a temperature of 1200-1300°C, and then subjected to converter blowing to control the iron content of the melt at the end of blowing. 0.8% high nickel matte with 8% sulfur content. The high-nickel matte was slowly cooled in the heat preservation pit for 72 hours. After crushing and grinding, a magnetic separator with a field strength of 1800Oe was used for ore dressing to obtain a 1.2t nickel-copper alloy containing 78% nickel, 16% copper and 4% sulfur. , precious metal 160g / t. The nickel-copper alloy is melted at a temperature of 1300 ° C and quenched with water to form metal particles of 1-15 mm. The alloy particles after water quenching are loaded into the synthesis reactor, and carbon monoxide gas with a purity of 80% is continuously introduced from the lower part of the synthesis reactor. Nickel reacts with ca...
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[0034] Example 2
[0035] The nickel sulfide concentrate with 12% nickel, 5% copper, 5g / t precious metal content and 100t mass is smelted in an electric furnace at a temperature of 1200-1300 ℃, and then subjected to converter blowing to control the iron content of the melt at the end of blowing. 0.4% high nickel matte with 7% sulfur content. The high-nickel matte was slowly cooled in the heat preservation pit for 80 hours, and after crushing and grinding, the ore was processed by a magnetic separator with a field strength of 2000Oe to obtain 1.4t nickel-copper alloy, which contained 80% nickel, 14% copper, and 3% sulfur. , precious metal 350g / t. The nickel-copper alloy is melted at a temperature of 1350 ° C and quenched with water to form metal particles of 1-15 mm. The alloy particles after water quenching are loaded into the synthesis reactor, and carbon monoxide gas with a purity of 86% is continuously introduced from the lower part of the synthesis reactor, and the press...
Example Embodiment
[0036] Example 3
[0037]The nickel sulfide concentrate with 16% nickel, 6% copper, 10g / t precious metal content and 100t mass is smelted in an electric furnace at a temperature of 1200-1300°C, and then subjected to converter blowing to control the iron content of the melt at the end of blowing. 1.0% high nickel matte with 10% sulfur content. The high-nickel matte was slowly cooled in the heat preservation pit for 72 hours. After crushing and grinding, a magnetic separator with a field strength of 2400Oe was used for ore dressing to obtain 1.8t nickel-copper alloy containing 68% nickel, 18% copper and 8% sulfur. , precious metal 550g / t. The nickel-copper alloy is melted at a temperature of 1400 ° C and quenched with water to form metal particles of 1-15 mm. The alloy particles after water quenching are loaded into the synthesis reactor, and carbon monoxide gas with a purity of 90% is continuously introduced from the lower part of the synthesis reactor. Nickel reacts with ca...
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