Record number :
1175358
Title of article :
Separation of scrap polyethylene pellets by density
Author/Authors :
J Alrefai، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
7
From page :
328
To page :
334
Abstract :
A process is proposed for the separation of a mixture of polyethylene pellets scrap with different densities, contaminated with other impurities using a mixture of two or more miscible liquid components. The process is carried out at low pressure where one of these components is either a very volatile liquid (n-pentane) or a liquefied gas (n-butane, domestic gas) whilst the other component is a high density liquid such as glacial acetic acid or tetralin (1,2,3,4-tetrahydronaphthalene). The liquid mixture density can be decreased by increasing the concentration of the volatile component or gas pressure, or can be increased by aeration of the volatile liquid or lowering gas pressure. In this way all of the fractions of the polyethylene mixture can be separated according to their densities.
Keywords :
Separation by density , Liquefied gas , n-Pentane , Acetic acid , tetralin , Polyethylene pellets scrap
Journal title :
Journal of Materials Processing Technology
Link To Document :