Combined collector for floatation of porphyry copper-molybdenum mine and floatation method thereof
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A combined collector and porphyry copper technology is applied in the combined collector and flotation field of porphyry copper-molybdenum ore flotation, which can solve the problems of molybdenite loss and the like
Active Publication Date: 2010-09-29
CENT SOUTH UNIV
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[0005] The purpose of the present invention is to provide a combined collector for flotation of porphyry copper-molybdenum ore and its flotation method, in order to overcome the lime high-alkali environment existing in the existing porphyry copper-molybdenum ore flotation process The defect of severe loss of molybdenite in the middle is to provide a new and efficient flotation reagent and flotation method for the efficient recovery of molybdenite and copper minerals in porphyry copper-molybdenum ore
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Embodiment 1
[0031] at 1m 3 Add 650 parts of diethyl phthalate into the reaction kettle, add 350 parts of N-ethoxycarbonyl-N'-propylthiourea under stirring, and stir at room temperature for 30 minutes to obtain a light yellow oily liquid, which can be used directly Copper flotation collector for porphyry copper-molybdenum ore, code name BS-1.
Embodiment 2
[0033] at 1.5m 3 Add 380 parts of diethyl phthalate and 600 parts of diesel oil to the reaction kettle, add 20 parts of N-ethoxycarbonyl N'-propylthiourea under stirring, and stir at room temperature for 60 minutes to obtain a light yellow oily liquid, the product It can be directly used as a collector for molybdenum-copper flotation of porphyry copper-molybdenum ore, code name BSH-2.
Embodiment 3
[0035] A large porphyry copper-molybdenum deposit, the main metal sulfide minerals in the ore are chalcopyrite, bornite, molybdenite, pyrite and a small amount of pyrrhotite. Gangue minerals mainly include quartz, juan mica, chlorite, water muscovite, illite, biotite and so on. The raw ore contains 0.44% copper, 0.0077% molybdenum, 1.21% sulfur, and the copper oxidation rate is 4.52%.
[0036] The ore sample is crushed to -2mm into a ball mill, the grinding concentration is 62%, and the grinding fineness is -200 mesh, accounting for 65%. The concentration of the flotation pulp is 30%, the pH value is adjusted to 7.5 with lime, and a collector is added for a rough separation. The flotation test conditions and results are shown in Table 1.
[0037] Table 1 Comparison test results of flotation collectors for porphyry copper-molybdenum ore
[0038]
[0039] * BSH-2 is the combination collector of embodiment 1 of the present invention
[0040]It can be seen from Table 1 that...
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Abstract
The invention discloses a combined collector for floatation of a porphyry copper-molybdenum mine and a floatation method thereof. The combined collector is characterized by at least comprising phthalate and carboalkoxy (aryloxy)-thiourea. The combined collector is used in a process of the floatation of the porphyry copper-molybdenum mine and the method comprises the following steps of: performing the floatation on molybdenum, copper and the like in which the molybdenum is as a majority; floating molybdenite and part of copper sulfide minerals with high floatability so as to obtain a molybdenum and copper mixed concentrate with high a molybdenum recovery rate; and enhancing the recovery of the copper sulfide minerals with poor floatability. Due to the adoption of the combined collector and the method, the problem of strong inhibiting effect on the molybdenite caused by a high-alkali environment of lime in a conventional mixed floatation process of the porphyry copper-molybdenum mine is solved effectively; and the method has the characteristics of simple and reasonable flow, high molybdenum recovery rate and the like.
Description
[technical field] [0001] The invention relates to the technical field of mineral flotation, in particular to a combined collector used for flotation of porphyry copper-molybdenum ore and a flotation method thereof. [Background technique] [0002] Porphyry copper deposits are usually associated with abundant molybdenum resources. Currently, more than 30% of the world's molybdenum comes from porphyry copper-molybdenum deposits. Molybdenum in porphyry copper-molybdenum ore usually exists in the form of molybdenite, and the common metal sulfide minerals mainly include chalcopyrite, chalcocite, bornite, pyrite and so on. [0003] Metal minerals such as copper and molybdenum are usually recovered from porphyry copper-molybdenum ore by flotation. At present, most porphyry copper-molybdenum ores at home and abroad generally adopt mixed flotation process, such as Copperton copper concentrator in the United States, Collahasi copper concentrator in Chile, Erdennet in Mongolia, etc. L...
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