This　is　anarticle　in　the　field　of　process　mineralogy.　The　grade　of　gold　and　sulfur　in　a　gold　mine　from　Shandong　Province　was　2.0　g/t　and　1.56%　respectively,　which　was　a　typical　gold　bearing　ore　with　low　sulfur.　There　covery　of　gold　was　made　by　flotation　process　in　dressing　mill,　the　gold　recovery　rate　was　90%,　the　gold　grade　of　tailings　was　0.17　g/t.　To　reduce　the　loss　of　gold,　and　improve　the　flotation　performance,　MLA（Mineral　Liberation　Analyser）combined　with　frequently　used　process　mineralogy　method　was　used　to　ascertain　the　reasons　for　the　loss　of　gold.　The　study　show　edpyrrhotite　and　pyritewere　main　metal　licminerals,　feldspar　and　quartz　were　a　primary　gangue　miner.　The　gold　locked　to　gangue　and　gold　included　with　gangue　accounted　for　77.29%,　of　which　the　size　distribution　was　below　0.01　mm,　were　difficult　to　recovered　by　flotation　process.　The　gold　locked　or　included　by　metal　sulfides　and　monomer　gold　accounted　for　22.71%,　were　unreasonable　loss.　Based　on　the　analysis　of　process　mineralogy　of　tailings:grinding　and　classification　were　the　key　to　further　work,　which　aimed　to　reduce　degree　of　over　grinding　of　useful　minerals,　achieve　the　improvement　of　beneficiation　results.　©　2024　Editorial　Department　of　Multipurpose　Utilization　of　Mineral　Resources.　All　rights　reserved.