31. Based on the sedimentation data of limestone particles, plot a settling curve and determine the range of particle sizes.
Settling time, sec 15 40 60 120 240 360 600
Amount of settled suspension, mg 27 43 53 63 70 73 74
Experimental conditions: settling height – 19*10-2, dispersed phase density – 2720 kg/m3; dispersion medium (water) density – 1000 kg/m3, medium viscosity – 1*10-3.

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