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针对煤泥矿化程度低导致的浮选效率低等问题,提出一种新型反击式环空喷射吸气搅拌器。利用水力反击原理,设计了新型反击式环空喷射吸气搅拌器以及30°、45°、90°3种喷嘴角度,利用FLUENT软件对3种喷嘴角度时搅拌器内压力及速度分别进行了二维数值计算,并对比分析了3种喷嘴角度在不同的射流速度下的流场分布特征,以及压力、速度等流体力学参数。研究表明,当喷嘴角度为45°时,搅拌区域内压力和速度云图分布合理,相邻喷嘴及叶轮叶片之间负压较低,利于空气相吸入;由于漩涡的存在,在一定程度上提高矿化效果,漩涡也使得矿浆形成死循环,可进一步试验进行研究。
In view of the low flotation efficiency caused by the low degree of mineralization of slime, a new type of counter-type annular jet suction blender is proposed. Using the hydraulic counterattack principle, a new type of counter-type annular jet suction blender and three kinds of nozzle angles of 30 °, 45 ° and 90 ° were designed. The pressure and speed of the mixer in the three nozzle angles were respectively calculated by using FLUENT software. Dimensional numerical calculation, and compared the flow characteristics of three nozzle angles under different jet velocities, as well as the hydrodynamic parameters such as pressure and velocity. The results show that when the nozzle angle is 45 °, the distribution of pressure and velocity in the agitation region is reasonable, and the negative pressure between adjacent nozzles and impeller blades is low, which is conducive to the air phase suction. Due to the existence of vortex, the ore is increased to a certain extent The effect of vortex also makes the pulp form an infinite loop, which can be further tested.