In the flotation process, the flotation separation effect of the target mineral is affected by many factors. This paper mainly introduces the influence of pulp concentration, flotation particle size and flotation machine speed on the flotation efficiency of chalcopyrite copper ore and pyrite.
Proper pulp concentration is very important in the flotation process. Pulp concentration has varying degrees of influence on reagent consumption, pulp aeration and flotation machine production efficiency, thus affecting mineral flotation efficiency.
Within a certain range, as the concentration of the ore pulp increases, the minerals and chemicals become more likely to collide and contact, and the minerals float faster per unit time. Therefore, high pulp concentration is beneficial to the rapid flotation separation of chalcopyrite and pyrite, and the fast and preferential flotation of chalcopyrite can be realized by adjusting the pulp concentration. However, if the pulp concentration is too high, it will increase the consumption of chemicals, deteriorate the aeration effect, and then affect the mineral flotation speed.
That is to say, an appropriate increase in pulp concentration can inhibit the floating of chalcopyrite and pyrite, thereby relatively improving the kinetic parameters of chalcopyrite and realizing rapid flotation of chalcopyrite and pyrite. Therefore, it is necessary to comprehensively consider factors such as beneficiation cost and flotation index, and select a suitable slurry concentration, so that chalcopyrite and pyrite can achieve better flotation separation effect.
There is a certain relationship between mineral particle size and flotation speed. For different minerals, the particle size at which the flotation rate occurs is different. Therefore, the mineral particle size also has an important influence on the flotation efficiency of chalcopyrite copper ore and pyrite.
Fine-grained minerals have small mass and low momentum, resulting in low collision energy between particles, thereby reducing the probability of collision. Moreover, the collision probability of mineral particles decreases with the decrease of particle size, thus affecting the flotation speed of minerals. Therefore, too fine mineral particle size will deteriorate the rapid separation effect of chalcopyrite and pyrite.
Appropriate increase in mineral particle size is beneficial to improve the flotation effect of coarse copper minerals. When the mineral particle size is too fine, the flotation effect will be poor at high concentration and high flotation machine speed. Therefore, the rapid flotation of chalcopyrite and pyrite can only be realized under the condition of suitable mineral particle size.
Therefore, considering factors such as grinding cost and grinding time, choosing a coarser particle size is beneficial to the flotation separation of chalcopyrite and pyrite, and can realize early and multiple harvesting of coarse-grained copper minerals under appropriate conditions.
Flotation equipment is an important factor affecting the flotation effect. Since the speed of the flotation machine determines the stirring intensity of the pulp, it has an important influence on the flotation effect of chalcopyrite and pyrite.
The speed of the flotation machine will affect the stirring intensity of the pulp, thus determining the turbulent velocity of the pulp in the flotation tank. Within a certain speed range, increasing the speed of the flotation machine can increase the amount of aeration and change the motion state of mineral particles, which is conducive to the effective dispersion of mineral particles, thereby increasing the collision probability of minerals and chemical molecules, and is conducive to improving the mineral flotation speed.
However, when the speed of the flotation machine is too high, the mineralized particles will fall off with the increase of pulp turbulence and turbulence intensity, and the flotation rate will reach the saturation value, and continuing to increase the speed will reduce the mineral flotation speed. This means that the speed of flotation machine is too low or too high to be conducive to the rapid separation of minerals, so choosing an appropriate speed of flotation machine is conducive to achieving better flotation separation effect for chalcopyrite and pyrite.
Above introduces the three important factors affecting chalcopyrite copper ore, pyrite flotation separation dynamics, due to the different mineral properties differences, suggest to choose a qualification of mineral processing factory first dressing test, choose the appropriate pulp concentration, mineral particle size and flotation machine speed, improve the flotation speed of chalcopyrite, pyrite, finally achieve good flotation index.
