TY - JOUR ID - TI - Studying the Factors effect on Separation of Two Solid Equivalent Particle According to Density and Determination the best Separation Point AU - Suha Mahdi Salih PY - 2022 VL - 13 IS - 2 SP - 22 EP - 35 JO - Anbar Journal of Engineering Sciences مجلة الأنبار للعلوم الهندسية SN - 19979428 27067440 AB - Density separation has many applications in metallurgy, medicine, clinical chemistry, microbiology,and agriculture. This study investigates the factors' effects on density separation in order tobenefit from this technique. The separation quality depends on the velocity of particles becauseas the velocity of particles increases, the mean separation needs less time so it gives better separation,so the parameter effect on the value of the velocity is studied. These parameters werevolume fractions, the diameter of the sphere, the density of the sphere, and the viscosity of thefluid. Each parameter was studied by calculating the velocity of particles using Stokes' law. Thevelocity of particles is directly proportional to some properties of particles. These properties arethe diameter and density of a particle because as these properties increase, the mass of particlesincreases, which leads to increased kinetic energy, which increases turbulence. Turblance's velocityis increasing. The volume fraction of spheres is another property of particles' effects ondensity separation. This parameter is inversely proportional to velocity because a collision betweenparticles increases, which decreases turbulence. Fluid properties also have an impact ondensity separation. This property is viscosity. Its effect deteriorates the efficiency of separationbecause viscosity is the resistance of the fluid to flow that serves to displace the particle, whichleads to a reduction in the velocity of the particle. The maximum separation happens when thesink and float particles separate at the same time. That happens when the sink and float particleshave the same velocity in the opposite direction. That means when the sum of velocities equalszero. In this research, the maximum separation was derived when the sum of velocities equaledzero.

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