A flotation machine for flotation of coarse-grained materials

Abstract

The invention relates to a flotation machine for coarse-grain material flotation. The flotation machine comprises a support and a flotation tank, wherein an overflow weir for foam overflowing is arranged on one side of the flotation tank. The flotation machine is characterized by further comprising a stirring mechanism and a circulating tank, the stirring mechanism comprises a stirring rod extending into the flotation tank, the upper end of the stirring rod is connected with a driving device, and a stirring assembly is mounted at the lower end of the stirring rod; the stirring rod is sleeved with a sleeve, an annular chamber formed between the sleeve and the stirring rod is used for conveying air and ore pulp into the flotation tank, the top end of the sleeve is connected with the support, and at least one pulp inlet is formed in the lower part of the sleeve; the circulating tank is arranged below the overflow weir, used for recovering the ore pulp flowing back from the overflow weir and communicated with the annular chamber. A good fluid environment is provided for separation of coarse-grain materials, the chance of adhesion of ore to bubbles is greatly increased, and the condition that fine-grain ore is not mineralized or mechanical entrainment occurs is effectively eliminated.

Description

technical field [0001] The invention relates to a flotation machine for ore separation, in particular to a flotation machine for coarse-grained material flotation. Background technique [0002] According to the mineral processing theory, the optimal particle size of flotation is 0.019~0.15mm. At present, most of the flotation machines developed in China are mainly for the separation of this particle size range, but some ores (such as coal mines, potassium rock salts, etc.) ore, etc.) can basically achieve monomer dissociation at a coarser particle size (0.3~1.5mm), and can be directly fed into the flotation machine for sorting. To adapt to the flotation particle size of the conventional flotation machine, you need Continue to grind, which will cause additional energy consumption for ore sorting, and will reduce the dehydration efficiency of the final fine tailings. If a conventional flotation machine is used to process ores within the size range of 0.3~1.5mm, there will be f...

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Problems solved by technology

[0002] According to the mineral processing theory, the optimal particle size of flotation is 0.019~0.15mm. At present, most of the flotation machines developed in China are mainly for the separation of this particle size range, but some ores (such as coal mines, potassium rock salts, etc.) ore, etc.) can basically achieve monomer dissociation at a coarser particle size (0.3~1.5mm), and can be directly fed into the flotation machine for sorting. To adapt to the flotation particle size of the conventional flotation machine, you need Continue to grind, which will cause additional energy consumption for ore sorting, and will reduce the dehydration efficiency of the final fine tailings. If a conventional flotation machine is used to process ores within the size range of 0.3~1.5mm, there will be flotation The stirring force of the machine is too small, the flotation cell is easy to press the cell, and the recovery rate of the concentrate is low. In order to solve the problem of poor separation effect of the conventional flotation machine in processing coarse-grained materials, the present invention designs a low energy consumption, A flotation machine specially designed for the separation of coarse-grained materials with good separation effect

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