Hydrocyclone separator

A hydrocyclone separator for size classifying solid material in liquid suspension, comprising:

• a head part having an inlet conduit configured to lead a suspension including the solid material into the head part, and having an overflow discharge tube arranged axially in the head part,
• a tapered separation part, and
• an apex discharge part for underflow discharge,
• the tapered separation part being arranged between the head part and the apex discharge part with a wide opening end face aligned and arranged to the head part and a narrower opening end face aligned and arranged to the apex discharge part,
• wherein the apex discharge part has a first opening aligned and attached with the narrower opening end face of the tapered separation part, and has a second opening for underflow discharge in a surface opposite to the first opening, the first opening being larger than the second opening, and an inner surface of the apex discharge part has a curvature extending from the first opening to the second opening, wherein the tapered separation part and the apex discharge part has a common symmetry axis, and
• wherein the apex discharge part at the second opening ends in a curvature in a tangential angle, β, within the range of 0°<β<40° from a reference plane defined transverse to the common symmetry axis,
• wherein the inner surface of the apex discharge part has a curvature shaped such that a ratio between an inside radius R(x) of the inner surface of the apex discharge part as defined from a common symmetry axis A of the apex discharge part and a distance xmax starting at the first opening and extending towards the second opening, R(x)/xmax, falls within the following ranges for varying relative distance x/xmax from the first opening to the second opening along the common symmetry axis:
• x/xmax
• R(x)/xmax
• 0.000000
• 0.625000 +/− 0.02
• 0.050000
• 0.620419 +/− 0.02
• 0.100000
• 0.615341 +/− 0.02
• 0.150000
• 0.609660 +/− 0.02
• 0.200000
• 0.603270 +/− 0.02
• 0.250000
• 0.596067 +/− 0.02
• 0.300000
• 0.587972 +/− 0.02
• 0.350000
• 0.579073 +/− 0.02
• 0.400000
• 0.569334 +/− 0.02
• 0.450000
• 0.558396 +/− 0.02
• 0.500000
• 0.546047 +/− 0.02
• 0.550000
• 0.532202 +/− 0.02
• 0.600000
• 0.516762 +/− 0.02
• 0.650000
• 0.499447 +/− 0.02
• 0.700000
• 0.479712 +/− 0.02
• 0.750000
• 0.456803 +/− 0.02
• 0.800000
• 0.429828 +/− 0.02
• 0.810000
• 0.423859 +/− 0.02
• 0.820000
• 0.417667 +/− 0.02
• 0.830000
• 0.411224 +/− 0.02
• 0.840000
• 0.404498 +/− 0.02
• 0.850000
• 0.397460 +/− 0.02
• 0.860000
• 0.390081 +/− 0.02
• 0.870000
• 0.382330 +/− 0.02
• 0.880000
• 0.374163 +/− 0.02
• 0.890000
• 0.365522 +/− 0.02
• 0.900000
• 0.356343 +/− 0.02
• 0.910000
• 0.346533 +/− 0.02
• 0.920000
• 0.335982 +/− 0.02
• 0.930000
• 0.324567 +/− 0.02
• 0.940000
• 0.312151 +/− 0.02
• 0.950000
• 0.298507 +/− 0.02
• 0.960000
• 0.283146 +/− 0.02
• 0.970000
• 0.265319 +/− 0.02
• 0.980000
• 0.243758 +/− 0.02
• 0.990000
• 0.216214 +/− 0.02
• 1.000000
• 0.162500 +/− 0.02.