低贫化放矿在上青矿的应用分析

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1、东北大学硕士学位论丈ABSTRACTTheapplicationandresearchofthelowdilution—givingmineralinShangqingMiningAbstractThetheoriesandexperimentsstudyhaveindicatedthatundertheconditionthatthetotalorerateofrecoveryisstable，thedilutionrateoftheorecanbeloweredinalargedegreeafterusin

2、gthelowdilutionwaytomine．BecausetheproducingsystemoftheShangqingmininghasbeeninafullburdenstate，inordertoincreasetheeconomicbenefitsofthecompany，improvingthequantityoftheraworeistheimportantmethod．Thenwecontroltheminingfromusingthelowdilutionwayinthefitplace

3、basedonthegeologyandminingcondition．Theresearchofthisthesishasbeguninthesecondhalfof2002，thereareninesegmentsintheriverbedmineralpillarandfoursegmentsremainedoreinthenorthpitoneandpittwocanbeminedin2003，becausethehavingamountofmineralisample，webegantomineint

4、hewayoflowdilution．ThishashadallimportantroleinstablingtheoregradeintheconditionofincreasingtheyieldinShangqingmining．Atthesametimewehadallanalysisandcalculationaboutthedistricts，wediscoveredthatthereareonlytwoorthreesegmentscanbemined，iftheplanofminingisin2

5、008．thehavingamountisnotample，thefurtherminingwillmaketherawore、theconcentrateandtheeconomicbenefitslower，SOtheminingplanisdelayed．Thedeepopeningengineeringbeganin2003，itissurethattheopeningsystemin520—540levelwillbecompletedintoproducein2007，thetimewillbesh

6、ortedoneyear．AtthesametimetheShangqingmininghashadanadjustmentabouttheplanningyieldaboutthekindsofthesegments．Theyieldsoftheriverbedareenlargedandtheotherdistrictsarereduced．Iftheminingisinthecutoffgradethemineamountwillbeampleabovetheleveloftheopening．Thisw

7、illmakethelowdilutionbecomepossibleButhowtodecidethecutoffgradeisthequestion．Thiswillinfluencetherecoveryindex．Becauseoftheshortageoftheresourcematerials，webeganaspecializedresearch东北大学硕士学位论文ABSTRACTabouttheconditionofthemininginShangqingmimng．Thisthesishase

8、laboratedtherelatedorerecoveryindexinfluenceinvariouscutoffgradesfromtheexperimentsandresearches．Theresulthadindicatedthatiftheenteringdistanceislongerthanthesegmentsheightandtheminingdistanceis