The flotation machine was successfully developed by the North Mine Institute in the first half of the 1980s, and its structure is shown in Figure 1.
The machine has a new double-sided impeller (Fig. 2). The impeller and other spindle components form the upper and lower impeller chambers. Air is filled between the main shaft and the center cylinder, a part of the air is filled into the upper impeller chamber, and another part of the air is filled into the lower impeller chamber through the trapezoidal hole, and the upper and lower impeller chambers simultaneously draw the circulating slurry in both directions, so that the impeller can simultaneously perform the two-way inflation and Two-way loop. The stator blade is composed of two sections, one section of the impeller is turned at a 4 degree angle to the radial direction, and the other section is arranged in a radial direction, and the two sections are transitioned by a circular arc. The stator blade of the cross-sectional shape overcomes the swirling phenomenon of the slurry after the air bubbles dispersed by the turbulent flow out of the stator together with the slurry and enter the turbulent flow zone of the flotation tank in the radial direction.
The flotation machine mainly has a specification, and its technical performance is: the effective volume of the trough is 5.18m 3 , the length of the trough is × the width × the height = 1.8m × 1.8m × 1.6m, and the production capacity according to the slurry is 2~10m 3 /min, spindle speed 191, 208r/min, impeller peripheral speed 5.5, 6m / s, spindle motor model JO 2 -71-8, power 13kW, maximum charge 2.08 3 / m 2 • min, inflation pressure 16kPa.
   Figure 1, 2
Benzene plate
Benzene board generally refers to EPS board. EPS board (expandable polystyrene board) has the advantages of light weight, low cost, low thermal conductivity, low water absorption, good electrical insulation performance, sound insulation, shockproof, moisture-proof, and simple molding process. Therefore, it is widely used as insulation, sound insulation, and seismic resistant materials for buildings, ships, automobiles, trains, refrigeration, and refrigeration.
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