石煤提釩新工藝研究.pdf

1、湘潭大學(xué)碩士學(xué)位論文石煤提釩新工藝研究姓名：鄭祥明申請學(xué)位級別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：田學(xué)達20030501!!塑蘭塑i塑蘭些壟墨：!型莖生塑塹三苧!墮：ABSTRACTV205wasseparatedfromstonecoalbyroastingwithsodiumsaltinconventionaltechnologyAlotofharmfulwastedustsuchasC1，HClandhightemperaturedus

2、twereproducedintheprocess，what’Smore，therecoverywasoftenlowerthan50％ItiSnecessarytodevelopaDewtechniqueinwhichtherecoveryofV，OEiSsatisfactoryandthereisnoairpollutionWetchemicaIseparationmethodwasusedtoseparateV205fromsto

3、necoalinthisPaDerThemineralsamplewasgroundto0074mmwithaporcelainmillWith160eeLoforeconcentrationand5minutesofaerationtheresultsofflotationwerethatthegradeofV20；wasimprovedfrom05％to07％andtherecoveryofcarbonwasalmostl00％Fr

4、omthestudyofthermodynamicanddynamicprocessitwasfoundthatleachingprocesswaspossibleandtheequilibriumconstantwasobtainedExperimentsshowedthatsoliddiffusioncontrolledthe1eachingspeedLeachingprocessparameterswereofarationlO：

5、1ofliquidtosolid，leachingpH1，temperature95。C，leachingtime2hoursTherecoveryofV205was80％inleachingprocessKIV[n04wasusedafterthefilterofleachingS01lJtionThisreactionwasoverwhenblueliquorturnedintoyellowBPHAwasdissolvedintoC

6、HCl3TheextractionprocessparameterswereBPHAconcentration39／L，extractionsolutionpH1Therecoveryofextractionwas995％witbablackredsolid(V02)2S04whichwaspouredintoH2S04solutionwithpH15to22TherecoveryofVanadiumwasmorethan95％With

7、outroastingoperationwithsodium，thechemicaIseparationmethoddidnotproduceC12，HClandotherwastedustTherecoveryofvanadiumwasmorethan75％，thewastesolutioncaneasilybetreatedbyusingCaC03orCaOKeywords：Vanadium；Stonecoal；Leaching；艙