Introduction of flotation column

The classification, working principle and technical parameters of the flotation column are briefly introduced. The development of the flotation column equipment is emphasized, including the key components of the flotation column---bubble generator and cylinder, and their superiority is compared. Disadvantages; Finally, the future development direction of the flotation column is pointed out: the automation control system, the development of the new bubble generator, the mathematical simulation of the flotation column and the flotation column sorting process of the short process are the research of the flotation column technology and equipment in the future. Focus.
Key words: flotation column; equipment; bubble generator; development; trend

Since its invention in the 1960s, the flotation column has undergone a 40-year twist. At the beginning, the flotation column promoted the world's first research boom with its simple structure, small footprint and good quality of concentrate. At that time the election of dozens of plants and coal beneficiation plants have been installed flotation column, but due to the bubble generator easy to plug, easy to wear and other shortcomings led to the flotation column did not continue to promote; in the 1980s, with the bubble generator problem The solution, the second research boom of flotation columns [1], appeared a large number of unique flotation columns, such as the Canadian CFCC flotation column, Germany's KHD flotation column, the US Flota ir flotation Column, VPI microbubble flotation column, MTU filling medium flotation column and Wemco Leeds flotation column, Ukrainian flotation column of the former Soviet Union, Jameson flotation column of Australia. While also absorbing the experience of foreign flotation columns, China has also developed several flotation columns, including the filling medium flotation column of China University of Mining and Technology (Beijing) and the cyclone-static microbubble flotation column of China University of Mining and Technology. At present, the various technologies and design concepts of flotation columns tend to be mature and have been widely used in the sorting of various ores. The flotation column exhibits an unparalleled advantage in conventional flotation machines in handling very fine materials.

1 Classification and characteristics of flotation columns

1.1 Classification

Flotation columns can be divided into different types according to different classification methods: 1 According to the direction of slurry and bubble motion, they can be divided into countercurrent, cocurrent and countercurrent-cocurrent hybrids. Countercurrent flotation column such as flotation column developed by Gintsvetmet Institute of Russia; same type flotation column, such as JB Rubinstein, etc., with separator-type stirring flotation column; countercurrent-cocurrent mixed flotation column such as jet floating Column selection; 2 According to the tank division, it can be divided into single-slot column and multi-slot column. Single-slot columns are widely used; multi-slot columns such as the multi-tank flotation column designed by Russia IOTT; 3 can be divided into high-column type and short-column type according to the height of the column. High column type flotation column such as Canada Boutin flotation column, Flota ire flotation column, Poland KFP flotation column, Leeds flotation column, MTU filling flotation column, electric flotation column and magnetic flotation column; Short column type flotation column such as full foam flotation column, Wemco /Leeds flotation column, cyclone flotation column (USA), Jameson flotation column, LH J flotation column (Beijing University of Science and Technology) and swirling static Microbubble flotation column (FCSMC), etc.;

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