Novel flotation column and flotation method thereof

Abstract

The invention relates to a novel flotation column and a flotation method thereof. The novel flotation column comprises a column body and a stirring and foaming mineralization device. The stirring and foaming mineralization device comprises a shell and a stirring mechanism, wherein the shell with one end closed and the other end open is arranged on the outer side of the bottom of the column body and is communicated with the column body, the stirring mechanism is arranged in the shell, and the inside of the shell is communicated with air, a pulp mixing and stirring drum and a circular pulp outlet in the bottom of the column body through pipelines. The flotation method of the flotation column includes that the stirring mechanism moves to generate negative pressure, the air, the circular pulp and mixed fluids of pulp in the pulp mixing and stirring drum and chemicals are sucked into the shell, the air forms bubbles in the shell under the action of the stirring mechanism, the bubbles and hydrophobic mineral grains in the pulp collide sufficiently to form mineral laden bubbles, and the mineral laden bubbles are delivered into the column body to be subjected to static flotation separation. The novel flotation column and the flotation method thereof have the advantages that sufficient turbulent-state mineralization intensity before the bubbles enter the inside of the column body can be guaranteed, pipeline blockage can be avoided, and a good static separation environment is provided.

Description

technical field [0001] The invention relates to a novel flotation column, which is suitable for the flotation of fine-grained mineral particles such as collophosite. Background technique [0002] Flotation is a technical method for separating useful minerals from ores according to the physical and chemical properties of the surface of mineral particles. The nature of the ore is different, and the flotation devices and methods that should be used are also different. Taking collophanite as an example, the flotation of collophanite has the following characteristics: 1) The phosphorus-containing minerals of collophanite are "colloidal" and non-fine Granular aggregates and impurity minerals are closely symbiotic, and the grinding fineness must be very fine to dissociate their monomers. Fine-grained minerals have small mass and low momentum, and it is difficult to effectively collide with air bubbles during the flotation process, requiring strong turbulent flow Conditions promote...

AI Technical Summary

Problems solved by technology

However, the mechanical agitation flotation machine has the following problems: in order to generate more fine air bubbles and increase the probability and kinetic energy of the collision and mineralization of the air bubbles and the target minerals, the flotation machine needs to have a faster speed, and in order to ensure that the fine-grained minerals have A good static separation environment also requires the flotation machine to have a low speed and a small amount of air, which is a contradictory and unsolvable problem for the flotation of fine-grained minerals

[0006] The flotation column has simple structure, large processing capacity, small footprint, low investment cost, and short construction period. Granular materials have a relatively large room for development, but the existing flotation columns have the following problems: 1) For soluble salt minerals such as collophanite, the mineral components dissolved in the pulp are prone to calcium formation, The section of the pipeline (especially the throat) in the bubble generator is small, which is easy to cause pipeline blockage and affect the normal operation of the equipment; 2) The collision process between the bubble and the pulp depends entirely on its own gravity and kinetic energy, unlike the flotation machine that can have Mechanical agitation enhances the collision, so its turbulent mineralization is relatively weak. In order to allow the bubbles to have sufficient time to mineralize, it is often necessary to have a sufficient height of the mineralized area, which is not conducive to the flotation of collophosite and increases the manufacturing cost.

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