Production online flotation arsine-reduction method for high arsenic-containing copper concentrate
A technology of copper concentrate and flotation, which is applied in the direction of solid separation, etc., can solve the problems of large metal loss, increased sorting cost, and high labor intensity of copper concentrate, and achieves the reduction of arsenic content, treatment cost, and operating cost low effect
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[0029] Example 1
[0030] Yunnan Gejiu Yunxikafang Branch 600 tons / day tin, copper, sulfur, and arsenic symbiotic polymetallic sulfide ore, copper concentrate production line of the symbiotic sulfide ore process reduces arsenic. The raw ore composition of the symbiotic sulfide ore is shown in Table 1:
[0031] Table 1. Multi-element analysis (%)
[0032] nameCuS As grade(%) 2.08318.811.090
[0033] The method for reducing arsenic by the online flotation of the copper concentrate is as follows:
[0034] (1) The copper-sulfur-arsenic mixed flotation process is used to produce mixed flotation high-arsenic copper coarse concentrate, and the tailings enter the heavy separation tin process; the copper-sulfur-arsenic mixed flotation process includes rough separation and second sweep For selection and detinning flotation, the reagent system is as follows:
[0035] Rough selection: mixed base xanthate 120g / t, 2# oil 45g / t;
[0036] One sweep selection: mixed base xanthate 80g / t, 2# oil 30g / ...
Example Embodiment
[0048] Example 2
[0049] The copper concentrate production of the copper sulfide ore process of the copper street concentrator of Wenshan Hualian Zinc Indium Company in Yunnan reduces arsenic on-line. The composition of the copper sulfide ore is shown in Table 3:
[0050] Table 3. Multi-element analysis (%)
[0051]
[0052]
[0053] The copper oxidation rate of this mine is as high as 24.95%.
[0054] The arsenic reduction method for the production of single copper sulfide ore on-line flotation is as follows:
[0055] (1) The copper-sulfur-arsenic mixed flotation process is used to produce mixed flotation high-arsenic copper coarse concentrate, and the tailings enter the heavy separation tin process; the copper-sulfur-arsenic mixed flotation process includes rough separation and second sweep For selection and detinning flotation, the reagent system is as follows:
[0056] Rough selection: mixed base xanthate 150g / t, 2# oil 60g / t;
[0057] One sweep selection: mixed base xanthate 60g / t,...
Example Embodiment
[0069] Example 3
[0070] The method of reducing arsenic by flotation in the production of high-arsenic copper concentrate is as follows:
[0071] (1) The copper-sulfur-arsenic mixed flotation process is used to produce mixed flotation high-arsenic copper coarse concentrate, and the tailings enter the heavy separation tin process; the copper-sulfur-arsenic mixed flotation process includes rough separation and second sweep For selection and detinning flotation, the reagent system is as follows:
[0072] Rough selection: mixed base xanthate 60g / t, 2# oil 25g / t;
[0073] One sweep selection: mixed base xanthate 40g / t, 2# oil 20g / t;
[0074] Second sweep selection: mixed base xanthate 25g / t, 2# oil 5g / t;
[0075] Tin removal flotation: blank;
[0076] (2) The high arsenic copper coarse concentrate of mixed flotation is classified by a long cone cyclone, small steel forging and fine grinding, and the grinding fineness is r -200 Items> 90%, grinding concentration is 45%; add lime 2000g / t and s...
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