The invention relates to a special flotation column of
coal fly ash, an ore pulp
distributor is arranged at the top part of a cylinder body of the special flotation column, a plurality of
layers of bubble plates are arranged in the cylinder body, a multi-point rotary flow device and a multi-point
fly ash overflow hole are arranged at the lower part of the cylinder body, an ore pulp distributing
pipe is arranged at the periphery of the ore pulp
distributor, a circulating pipeline is arranged at the periphery of the cylinder body, the upper end of the circulating pipeline is connected and communicates with the ore pulp distributing
pipe, the lower end is connected and communicates with the rotary flow device, an interface of the ore pulp distributing
pipe and a feed and
discharge port are respectively connected with the both ends of a
circulating pump, a
high carbon ash balance overflow plate and a
high carbon ash overflow collection port are further arranged at the upper part of the flotation column, and the
fly ash overflow hole is provided with a fly ash automatic regulation box by the connection of the pipeline. The special flotation column is applicable to various requirements, the
decarburization effect is good, the
continuous operation is stable and reliable, the quality of fine
coal is high and the
processing ability is great, thus saving energy, increasing efficiency and saving investment.