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Internal-internal fly ash multi-stage flotation separation system

A separation system and fly ash technology, applied in flotation, solid separation and other directions, can solve the problems of poor flotation effect, waste of energy consumption, etc., to improve the flotation rate, strengthen the effect of turbulent flow, and improve the flotation effect Effect

Inactive Publication Date: 2011-12-21
FUJIAN LONGYAN LONGNENG FRYASH COMPREHENSIVE UTILIZATION
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Problems solved by technology

[0008] The disadvantages of the above-mentioned technical solution are: usually swirling gas or laminar gas is used to push the air bubbles upward, the trajectory of the fly ash particles is spiral upward or straight upward, and the flotation effect is poor; no reflective surface is set, and the falling air bubbles and particles Directly enter the tail ash outlet, wasting energy

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  • Internal-internal fly ash multi-stage flotation separation system
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Embodiment Construction

[0035] Such as figure 1 As shown, a specific embodiment of the present invention includes a two-stage flotation separation device.

[0036] Among them, the first flotation separation device includes: a material storage device 1, a distribution device 2, a vertical cylinder 3, a cone-shaped air diffuser 4, a multi-layer flotation plate 5, an air supply device 6, and a physical separation device Such as ultrasonic separation device 8 , discharge pipe 7 , filter plate 9 , overflow collection section 301 , tail ash collection section 305 .

[0037] The cylinder body 3 arranged vertically can be divided into three parts, from top to bottom: the first flotation section 302 , the diffusion cone section 303 , and the second flotation section 304 . Wherein, the first flotation section 302 is relatively thin, and a layer of flotation plates 5 is arranged inside it. The second flotation section 304 is relatively thick, and an air diffuser 4 and a layer of flotation plates 5 are arrange...

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Abstract

The invention discloses an internal-internal fly ash multi-stage flotation separation system. The system comprises at least two flotation separation devices, wherein each flotation separation device comprises a barrel, an overflow collection section, a tail ash collection section, a gas dispersing device, a plurality of layers of flotation plates, a distribution device and a gas supply device; a first flotation separation device also comprises a storage device; the storage device is provided with a feeding pipeline which is communicated with the distribution device of the first flotation separation device; and a discharge hole of the first flotation separation device is communicated with the distribution device of a second flotation separation device through a discharge pipeline. The gas dispersing device is arranged in each flotation separation device, and a plurality of gas holes of the gas dispersing device point to an upper inclined side at different angles, so that a material in the barrel forms turbulent current, and a better flotation effect is achieved; and the surface of the gas dispersing device has a reflecting effect, so that the turbulent current effect can be enhanced, bubbles and particles can rebound and move upward again, and the flotation rate can be effectively improved.

Description

technical field [0001] The invention relates to the production of activated carbon by using fly ash, more specifically, the invention relates to an internal-internal fly ash multistage flotation separation system. Background technique [0002] Fly ash is one of the largest industrial wastes in my country, and the annual slag discharge in China has reached 30 million tons at this stage. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. Fly ash contains a large amount of unburned carbon particles, which can be used as a raw material for the manufacture of activated carbon after flotation. [0003] Chinese patent 200810031474.7 discloses a special flotation column for fly ash. A slurry distributor is installed on the top of the flotation column cylinder. Multi-layer bubbling plates are arranged inside the cylinder. The ash overflow hole, the pulp distribution pipe is installed around the pulp distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/14
Inventor 许闽清
Owner FUJIAN LONGYAN LONGNENG FRYASH COMPREHENSIVE UTILIZATION
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