BF flotation machine is a self-priming mechanical stirring flotation machine, and its main features are as follows: (1) It adopts a unique closed impeller with double cone disks, which is novel in structure, and has the advantages of strong stirring, energy saving and large air intake, which is different from other flotation machines at home and abroad; (2) The strong circulation below the pulp in the lower part of the tank is beneficial to the suspension of coarse minerals, which can avoid the precipitation of coarse sand in the tank and improve the separation index; (3) It has the dual functions of pulp suction and flotation, and the intermediate products in the flotation loop are self-absorbed and circulated without auxiliary equipment; (4) The horizontal configuration between each operation section facilitates the renewal of the flotation machine in the old concentrator; (5) The impeller is made of ultra-high molecular weight polyethylene as a whole, and its service life can be twice as long as that of the original steel skeleton rubber-coated impeller. At present, the maximum specification is 24m3 and the power is 45kW. KYF flotation machine is a deep tank aeration mechanical stirring flotation machine, which adopts U-shaped tank and hollow shaft for aeration. It is unique in that it adopts the original single-wall backward-inclined blade inverted cone impeller, porous cylindrical gas disperser, smaller suspended stator and central movable foam pushing plate. The machine has the advantages of simple structure, convenient installation, reducing short circuit of pulp, preventing sand settling at tank bottom, effectively utilizing bubbles, saving fan air volume, low energy consumption, stable ore position, high recovery rate, no need to draw ore when stopping, etc. Its performance has reached and exceeded the level of advanced OK flotation machine abroad.
XCF flotation machine is a new, efficient and pulp-sucking aerated mechanical stirring flotation machine, which solves the problem that the aerated mechanical stirring flotation machine cannot suck pulp by itself, and its technical performance has reached the international advanced level. The equipment is mainly composed of impeller stator mechanism, central cylinder, cover plate, ore feeding pipe, intermediate ore pipe and tank body. When working, the impeller rotates, the upper blade sucks in the feed and middling, the pulp in the tank reaches the bottom of the tank from all sides, and then the impeller sucks in the lower blade from the lower part; At the same time, the low pressure air supplied by the blower also enters between the lower blades of the impeller through the distributor. The pulp and air are fully mixed between the lower blades of the impeller and then discharged by the lower blades of the impeller. Together with the pulp discharged by the blades on the impeller, it flows stably and directionally through the surrounding stator, and then enters the main pulp in the tank. Mineralized bubbles rise to the surface of the pulp in the tank to form a foam layer. Part of the pulp circulates back to the lower blade of the impeller, and the other part enters the next tank through the circulation hole on the partition wall of the tank for reselection. This kind of flotation machine can be used alone or in combination with KYF flotation machine without self-suction, so that the flotation operation in each stage is horizontally configured without other auxiliary equipment. Since 1980s, there has been a new upsurge in the research and application of flotation column in the world. These flotation columns have some different characteristics from the old ones, mainly including:
(1) The inflation methods and materials are diversified, the inflation performance is continuously improved, and the service life is gradually extended;
(2) Adopting various new flotation technologies and methods such as electricity, magnetism, vacuum and dissolved gas;
(3) Adopt a higher level of automatic control technology;
(4) The scope of application is constantly expanding.
At present, the largest equipment model put into use is -220, the volume of flotation machine is 220m3, the diameter of flotation machine is -4.5m, the height is 16m, and the production capacity is 30m3/min, making it the largest flotation column in the world. Large-scale flotation column can reduce basic investment, reduce production cost and improve technical indicators. For example, the full-face air-lift micro-bubble flotation machine with patented equipment of Yantai Xinhai Mining Machine adopts multi-directional aeration at the bottom, center and periphery and strong air stirring, which can keep solid particles suspended at low energy consumption. Equipment can be stopped and restarted with load, and the unit energy consumption decreases with the increase of equipment specifications.