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Oil bubble-based column flotation device and method

An oil bubble and column technology, applied in flotation, solid separation, etc., can solve problems such as high oxygen content, waste of coal resources, and poor buoyancy

Inactive Publication Date: 2017-10-31
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low degree of metamorphism of low-rank coal, high oxygen content, and large surface porosity, it has poor buoyancy and low recovery rate of clean coal, resulting in waste of coal resources.

Method used

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  • Oil bubble-based column flotation device and method
  • Oil bubble-based column flotation device and method

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] A column flotation device based on oil bubbles, including an oil inlet valve 2, an oil discharge valve 1, an oil chamber 5, a sintered plate 8, a flange 7, a main inlet pipe 4, a branch inlet pipe 6, and an air inlet 9. Circulation pump 10, bubble generator 16, tailings port 3, overflow tank 17, concentrate discharge port 18, feed port 15, gas flow meter 14, air compressor 11, gas storage tank 13 and steam-water separation The device 12 is characterized in that the oil chamber 5 is arranged in the column type flotation equipment and is divided into a flotation section, a scavenging section and an oil chamber, the oil chamber is located at the lower part of the scavenging area, and the bottom of the column is fixed in the middle of the flange 7 The sintered plate 8 isolates the oil chamber 5 from the pulp in the flotation column; the gas storage tank 13 is connected w...

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Abstract

The invention discloses an oil bubble-based column flotation device and method. The device mainly comprises an oil chamber, a sintered plate, a flange, a main path inlet pipe, branch inlet pipes, a circulating pump, an air bubble generator and an overflow groove. The device is characterized in that the oil chamber is arranged at the bottom of a column body of the column flotation device; the oil chamber is separated from ore pulp of a flotation segment through the sintered plate fixed in the middle of the flange; an air inlet is connected with the main path inlet pipe through a pipe; the main path inlet pipe is arranged in a circle around the column body of a flotation column and connected with six branch inlet pipes; the six branch inlet pipes are uniformly arranged on the periphery of the bottom of the oil chamber; and an air outlet of each branch inlet pipe penetrates into the oil chamber for a proper length to ensure uniform distribution of the gas in the oil chamber. Separation of middings coal is strengthened by rotational flow formed by the circulating pump, suspension of mineral grains in the ore pulp is ensured, and the advantage conditions are created for implementation of mineralization of coal grains and oil bubbles.

Description

technical field [0001] The invention relates to a column type flotation device and method, in particular to a column type flotation device and method for oil bubble flotation of low-rank coal slime. Background technique [0002] According to the 2016 BP World Energy Statistical Yearbook, China remained the world's largest energy consumer in 2015, accounting for 23% of global energy consumption and 34% of the net increase in energy consumption. my country is rich in coal resources, accounting for 94% of my country's energy reserves, while oil and natural gas account for only 6%. Coal, as an important support of my country's energy and an important industrial raw material, provides an important guarantee for economic and social development and energy security supply. Coal, as the main fuel of my country's primary energy consumption, accounts for 64% of primary energy consumption. Although my country's energy structure has been continuously improving, according to forecasts, ...

Claims

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Application Information

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IPC IPC(8): B03D1/14
CPCB03D1/1418
Inventor 陈松降陶秀祥陈亮何环杨曌李路路唐龙飞郭季锋
Owner CHINA UNIV OF MINING & TECH
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