A　sinter＇s　density,　porosity　and　equivalent　thermal　conductivity　were　measured.　The　variation　of　equivalent　thermal　conductivity　with　temperature　was　studied.　The　results　showed　that　equivalent　thermal　conductivity　increased　with　temperature　during　323~750　K　and　reached　a　peak　near　750　K.　After　the　temperature　rised　above　750　K,　part　of　sinter　melted　with　equivalent　thermal　conductivity　reduced.　The　temperature　of　sinter　at　actual　cooling　process　was　below　723　K.　Simulated　results　showed　that　with　the　rising　of　temperature　solid　thermal　conductivity　increased　linearly　from　323　K　to　723　K,　Numerical　simulation　of　equivalent　thermal　conductivity　validated　by　experimental　measurement　were　better　than　the　experience　value.　©　2017,　Science　Press.　All　right　reserved.