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1、趙各莊礦選煤廠技術(shù)改造實(shí)踐劉艷萍(開(kāi)灤集團(tuán)有限責(zé)任公司趙各莊礦業(yè)有限公司,河北唐山063102)摘要:趙各莊礦選煤廠原煤、煤泥篩分試驗(yàn)表明:原煤由難選煤轉(zhuǎn)化為極難選煤,原煤煤泥中細(xì)粒級(jí)含量較大,細(xì)粒級(jí)煤泥灰分較高。針對(duì)選煤廠存在的處理能力低、精煤產(chǎn)率低、介耗超標(biāo)和.y-藝系統(tǒng)復(fù)雜等問(wèn)題,采用了無(wú)壓給料三產(chǎn)品重介質(zhì)旋流器不脫泥不分級(jí)選煤工藝替換原跳汰一重介一浮選聯(lián)合分選工藝。從受煤系統(tǒng)及原煤準(zhǔn)備,分選、脫介及脫水作業(yè),煤泥重介分選,介質(zhì)回收,粗煤泥回收和煤泥水處理6個(gè)方面詳細(xì)介紹了選煤廠技術(shù)改造措施。最后對(duì)選煤廠技術(shù)改造效果進(jìn)行了分析,結(jié)果表明:技術(shù)改造后,趙各莊礦選煤廠簡(jiǎn)化了煤泥水系
2、統(tǒng)解決了選煤廠洗水濃度高的問(wèn)題;選煤系統(tǒng)最大處理能力由300t/h提高到450t/h,節(jié)省噸煤加工費(fèi)928.8萬(wàn)元/a,利潤(rùn)可達(dá)4500多萬(wàn)元/a。關(guān)鍵詞:重介;原煤性質(zhì);篩分試驗(yàn);煤泥水;技術(shù)改造;可選性中圖分類號(hào):TD94文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1006—6772(2012)01—0016—03TechnologicalreformofZhaogezhuangcoalpreparationplantLIUYan—ping(ZhaogezhuangMiningCo.,Ltd.,KailuanGroupLimitedLiabilityCompany,Tangshan063102,Ch
3、ina)Abstract:ThescreenexperimentsofrawcoalandslimeinZhaogezhuangcoalpreparationplantshowthat,whencoalwashabilityisconve~edfromdificultseparationtoultra—dificultseparation,fineparticlesizeislargerincoalslime,theashcontentishigher.Inordertosolvetheproblemsexistedinplantsuchaslowerprocessingcapaci
4、tyandyieldofcleancoa1.mediumconsumptionoutofstandardandcomplicatedtechnicalprocess,theoriginaljig—deucemedium—flotationcombinedseparationprocesswasreplacedbyungradedandundeslimingonewhichisdoneonunpreSSurizedfedthree.productdencemediumcyclone.Thereformmeasuresareintroducedfromsixaspectswhichare
5、receptioncoalsystemandrawcoalpreparation,separation,dewaterandde—medium,slimedensemediumseparation,mediumandcoarseslimerecovery,slimewatertreatment.Theanalysisofreformefectshowsthatslimewaterprocessingsystemhasbeensimplified,thewashingwaterconcentrationhasbeendecreased,themaximumcapacitvhasbeen
6、improvedfrom300t/hto450t/h,pertoncoalprocessingchargehasbeenreducedby9.288millionannually.a(chǎn)nnualreturnwouldreachupwardsof45millionyuan.Keywords:deucemedium;rawcoalproperties;screenexperiment;slimewater;techno10gicalreform;ashability趙各莊礦選煤廠是開(kāi)灤集團(tuán)所屬的礦井型煉為肥煤,主要人選趙各莊礦原煤和部分外購(gòu)原煤。焦煤選煤廠,原煤設(shè)計(jì)處理能力1.8Mt/a,
7、入選煤種原生產(chǎn)采用跳汰粗選一重介旋流器精選一煤泥浮收稿日期:201l一09—06責(zé)任編輯:白婭娜作者簡(jiǎn)介:劉艷萍(1979一),女,山西朔州人,工程師,現(xiàn)從事選煤技術(shù)管理工作?!稘崈裘杭夹g(shù)}2012年第18卷第1期r中國(guó)科技核,b~l'oJ全國(guó)中文核心期刊礦業(yè)類核心期刊j選的工藝流程。隨著礦井機(jī)械化開(kāi)采程度的提高2原工藝流程及開(kāi)采深度的增加,煤質(zhì)發(fā)生了重大變化¨j,且選煤廠投產(chǎn)運(yùn)行以來(lái),工藝系統(tǒng)也存在一系列問(wèn)題,選煤廠原工藝流程為:原煤經(jīng)篩孑L為50mm的