Settling cyclonic micro-bubble flotation column separation unit and method

Abstract

The invention discloses a settling cyclonic micro-bubble flotation column separation unit and method. The unit mainly comprises a spray water pipe, a froth concentration collection tank, an inclined column, a vertical column, a high ash content fine slime discharge pipe, an intercepting plate, an ore feed pipe, a circulating pulp pipe, and a tailing pipe. Inclination of the inclined column, length proportion of the vertical column and area of the intercepting plate can be adjusted to adapt to changes in ore floatation performance. The column is inclined, the intercepting plate and the high ash content fine slime discharge pipe are added, the principle of compound settling and column flotation are combined organically, and accordingly multi-stage continuous concentration of concentrate is achieved, mechanical entrapment pollution of high ash content fine slime is avoided, and the quality of clean coal and tailings is guaranteed; product structure of production intermediates can be adjusted flexible according to the product quality, so that floatation process is simplified; settling area is enlarged, column height is reduced, and investment of capital construction is reduced; extra power and drugs to be consumed are not required, and the contradiction between separation efficiency and energy-drug consumption is well solved.

Description

Technical field [0001] The invention relates to a separation device and method for a sedimentation cyclone microbubble flotation column, and is particularly suitable for the separation of coal slime, metal ores and non-metal ores. Background technique [0002] With the improvement of coal mining mechanization, the proportion of fine and ultra-fine slime in the raw coal increases; the depth of coal mining continues to deepen, and the quality of raw coal deteriorates; the change of gravity separation equipment and technology leads to secondary pulverized coal content More and more and the sorting is more difficult; coupled with the increasingly stringent requirements of the market for the quality of clean coal, the proportion of difficult to be sorted and extremely difficult to be sorted increases, and sorting becomes more and more difficult. Therefore, the global problem of effective separation of high-ash fine-grained slime has become a bottleneck restricting the improvement of c...

AI Technical Summary

Problems solved by technology

However, when dealing with the floating coal slime when the amount of fine coal slime with a particle size of -0.074mm exceeds 50%, there are high ash content in the clean coal due to hydraulic entrainment and interception of the high-ash fine slime in the process of lifting the clean coal, and even Unqualified; tailing coal running coarse phenomenon is serious, resulting in a serious waste of clean coal resources; too much chemical consumption, greatly increasing costs; too fine particle size, subsequent filter press dehydration operations are difficult to carry out

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