A kind of porphyry copper-molybdenum ore collector and its preparation method and application

Abstract

The invention belongs to the technical field of ore dressing, and specifically relates to a porphyry copper-molybdenum ore collector, and a preparation method and an application thereof. The porphyrycopper-molybdenum ore collector provided by the invention comprises the following components in parts by volume: 5 to 25 parts of phthalic acid ester of diol or ether, 15 to 35 parts of heavy oil, 15to 40 parts of hydrocarbon oil and 5 to 25 parts of thiocarbamate. The porphyry copper-molybdenum ore collector provided by the invention has the following advantages: the phthalic acid ester of diolor ether facilitates activating and efficiently exerting ore-dressing performance of the heavy oil and the hydrocarbon oil in the ore-dressing process of an ore pulp; the thiourethane has excellent ore-dressing power and is non-condensing at a low temperature; and through synergistic effect a plurality of components, the solubility and low-temperature property of the heavy oil are improved, and the surface activity of the collector is reinforced. Embodiment results show that the porphyry copper-molybdenum ore collector has the following advantages: the grade of molybdenum and the recovery rates of copper and molybdenum are significantly improved; the viscosity of the ore pulp is significantly decreased; and the porphyry copper-molybdenum ore collector is non-viscous, does not adhere to a wall and ores, and has excellent ore-dressing performance.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a collector for porphyry copper-molybdenum ore, a preparation method and application thereof. Background technique [0002] Collectors are the most important type of flotation agents that change the hydrophobicity of the mineral surface and make the floating ore particles adhere to the air bubbles. It has two basic properties: (1) It can be selectively adsorbed on the mineral surface; (2) It can improve the hydrophobicity of the mineral surface, making it easy to adhere to the air bubbles, thereby improving the buoyancy of the mineral. Among the different types of copper-molybdenum ores, porphyry-type copper-molybdenum ores account for the largest proportion, so porphyry copper-molybdenum ore collectors are the most widely used type of collectors. In the prior art, as patent CN101844107 discloses a kind of porphyry copper-molybdenum ore collector, but this...

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Problems solved by technology

In the prior art, as patent CN101844107 discloses a kind of porphyry copper-molybdenum ore collector, but this scheme has used a large amount of heavy oil, high-carbon hydrocarbon, and many materials (such as alkyl naphthalene etc. ) is in a condensed state in the pulp (especially the low temperature pulp at 15°C), and cannot diffuse in the form of a single molecule, and cannot realize the role that the pharmaceutical molecule should play at the molecular level. The dosage is increased; there will also be collector adhesion on the flotation equipment and the selected copper-molybdenum ore particles, and the excess agent adhering to the copper-molybdenum ore particles will have an adverse effect on the subsequent separation of copper and molybdenum; At the same time, thick oil clusters or turbidity also appear in the mineral processing backwater, which is not conducive to the reuse of backwater

[0003] In the porphyry copper-molybdenum ore collector disclosed in patent CN101844107, phthalic acid diesters (dimethyl ester, diethyl ester, dibutyl ester, dioctyl ester) that account for the mass fraction of the collector up to 35% are used. Phthalic acid diesters are beneficial to the activation and development of heavy hydrocarbon substances and other chemicals in the mineral processing performance of ore pulp, but the phthalic acid diesters used in them have great environmental hazards and have been listed in mining academic journals. It is a substance of high concern in mining chemicals (Chen Caixia, Luan Helin. Concerned about toxic and harmful substances in dressing and smelting chemicals [J]. Mining and Metallurgy, 2016 (2) 67-70); recent regulations in Europe and the United States include the above eight Newer and more stringent restrictions on phthalate diesters (Zheng Ninglai. Stricter restrictions on phthalate plasticizers in the United States and Europe [J]. Plastic Additives, 2018 (3): 54), that is, the above-mentioned current The phthalic acid diesters (dimethyl ester, diethyl ester, dibutyl ester, dioctyl ester) in the existing technology are already banned chemicals, which are extremely harmful to the protection of the mine environment and ecological safety

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