Copper-molybdenum separation method for low-grade copper-molybdenum ore with consideration of backwater utilization
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A copper-molybdenum ore, low-grade technology, used in solid separation, flotation and other directions, can solve the problems of large process energy consumption, many chemical addition points, and large consumption.
Pending Publication Date: 2022-03-22
TIBET HUATAILONG MINING DEV
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In addition, the return water of ore dressing contains a large amount of metal ions. If it is directly used for flotation operations, it may disturb the flotation system and increase the consumption of reagents.
[0008] When the existing technology separates copper and molybdenum, the energy consumption of the process is relatively large, more equipment is used, the process is longer, the addition of agents is more, the consumption is large, and the cost pressure is high
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Embodiment 1
[0116] The copper-molybdenum ore is a porphyry-type copper-molybdenum ore in Tibet. The metal sulfides contained in the ore are mainly bornite, chalcopyrite, chalcocite, pyrite, and molybdenite; the gangue minerals are mainly garnet, Epidote, rhodoxene, wollastonite, diopside, calcite, plagioclase, quartz, etc.; copper molybdenum grade 0.95%, molybdenum grade 0.032%.
[0117] Copper-molybdenum ore undergoes copper-molybdenum mixed flotation (one-time roughing, two-time sweeping and three-time beneficiation) to obtain copper-molybdenum mixed concentrate; the copper grade in the copper-molybdenum mixed concentrate is 19.65%, and the molybdenum grade is 0.42%; The mixed concentrate yield was calculated to be 4.49%.
[0118] The copper-molybdenum mixed concentrate enters the thickener to concentrate, the concentrated concentration is 49%, and is pumped to the mixing tank 1 before the copper-molybdenum separation flotation, and the water in the aeration tank is used for pulping. Th...
Embodiment 2
[0138] A porphyry-type copper-molybdenum deposit in Tibet, the metal sulfides in the ore are mainly bornite, chalcopyrite, chalcocite, pyrite, molybdenite, and the gangue minerals are mainly garnet, epidote, rose Pyroxene, wollastonite, diopside, calcite, plagioclase, quartz, etc.; copper grade of copper molybdenum ore is 0.75%, and molybdenum grade is 0.026%.
[0139] Copper-molybdenum ore undergoes copper-molybdenum mixed flotation (one-time roughing, two-time sweeping and three-time beneficiation) to obtain copper-molybdenum mixed concentrate; the copper grade in the copper-molybdenum mixed concentrate is 18.12%, and the molybdenum grade is 0.37%; The mixed concentrate yield was calculated to be 3.77%.
[0140] The copper-molybdenum mixed concentrate enters the thickener to concentrate, the concentrated concentration is 48%, and is pumped to the mixing tank 1 before the copper-molybdenum separation flotation, and the water in the aeration tank is used for slurry adjustment....
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Abstract
The invention provides a low-grade copper-molybdenum ore copper-molybdenum separation method giving consideration to backwater utilization, which comprises the following steps: carrying out copper-molybdenum bulk flotation on copper-molybdenum ore to obtain copper-molybdenum bulk concentrate and tailings; the tailings are subjected to concentration and filter pressing, and low-water-content tailings are obtained; and the copper-molybdenum bulk concentrate is concentrated, pulp mixing is conducted, then copper-molybdenum separation operation is conducted, and molybdenum concentrate and copper concentrate are obtained. According to the invention, sodium hydrosulfide and sodium thioglycollate are combined for use, so that the use amount of sodium hydrosulfide is greatly reduced; a pulp mixing and stirring barrel is arranged before the copper-molybdenum separation operation, the concentration of floating pulp is stabilized, meanwhile, sodium hydrosulfide is adopted for adjusting the potential of the pulp, and through the modes of sodium hydrosulfide reagent removal, high-concentration concentration reagent removal, aeration reagent removal, stirring friction washing and the like, residual reagents in the copper-molybdenum mixing operation in the pulp are reduced. According to the method provided by the invention, copper and molybdenum can be well separated.
Description
technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for separating copper and molybdenum from low-grade copper-molybdenum ore with consideration of backwater utilization. Background technique [0002] my country's molybdenum resources are quite rich, mainly distributed in Henan, Jilin, Inner Mongolia, Heilongjiang, Shaanxi and other provinces and regions. The total reserves of these areas account for about 85% of the total reserves of molybdenum resources in the country. my country is not only a big molybdenum resource country, but also a big molybdenum producer, with annual output accounting for more than 36% of the global total. Copper-molybdenum mixed ore is the main source of copper and molybdenum, of which 75% of copper and 50% of molybdenum are produced in copper-molybdenum mixed ore. Copper and molybdenum in porphyry-type copper-molybdenum mixed ores mainly exist in the form of chalcopyrite ...
Claims
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Application Information
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