Recrystallization　is　simulated　for　a　material　containing　both　fine　and　coarse　particles.　A　deterministic　expression　is　developed　for　describing　the　heterogeneous　distribution　of　the　stored　energy　density　that　arises　due　to　the　presence　of　coarse　particles.　The　effect　of　recovery　reducing　the　stored　energy　density,　and　the　different　effects　of　coarse　and　fine　particles　on　recrystallization　are　quantified.　The　criteria　for　nucleation　and　growth　of　the　recrystallizing　grains　are　given　in　energy　balances.　With　3D　Monte-Carlo　simulations,　various　stable　recrystallized　microstructures　are　generated　by　applying　different　combinations　of　parameters　of　the　two　size　classes　of　particles.　In　a　quantitative　study,　the　effects　of　recovery　and　varying　volume　fractions　of　the　two　particle　types　on　the　recrystallization　kinetics　are　investigated.　The　simulation　calculations　are　compared　with　experimental　results　obtained　with　Al-Zr　alloys.　The　model　is　verified　concerning　microstructural　morphology　and　recrystallized　volume　fraction.　(c)　2006　Elsevier　B.V.　All　rights　reserved.