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1、=一產(chǎn)品重介質(zhì)選煤工藝在唐山春澳選烽廠昀應(yīng)用白景啟,邢玉梅,陳艷春(天地科技股份有限公司唐山分公司,河北唐山063000)摘要:針對唐山春澳選煤廠煤源復(fù)雜、煤質(zhì)波動大等特點(diǎn),為了最大程度地回收精煤產(chǎn)率,通過分析重介與跳汰、預(yù)先脫泥入選與不脫泥入選、有壓給料與無壓給料的優(yōu)缺點(diǎn),確定選煤廠主選方法為不脫泥無壓入料的三產(chǎn)品重介質(zhì)旋流器分選工藝。通過對螺旋分選機(jī)、干擾床分選機(jī)(TBS)及煤泥重介質(zhì)旋流器等粗煤泥分選工藝的對比,確定采用煤泥重介分選工藝分選粗煤泥。最終確定唐山春澳選煤廠采用無壓給料三產(chǎn)品重介質(zhì)旋流器+煤泥重介+浮選分選工
2、藝。尾煤煤泥水濃縮壓濾,全廠洗水實(shí)現(xiàn)閉路循環(huán),整個分選工藝具有產(chǎn)品系統(tǒng)及煤泥水處理靈活可變的特點(diǎn)。唐山春澳選煤廠試車結(jié)果表明:三產(chǎn)品重介質(zhì)旋流器的重介懸浮液入口壓力達(dá)到0.2MPa,矸石帶煤率小于1%,分選效果良好;精煤灰分在1O%以下,中煤灰分約為35%,矸石灰分在70%以上;介耗較低,處理量穩(wěn)定在160t/h,也可達(dá)到200t/h。關(guān)鍵詞:三產(chǎn)品重介質(zhì)旋流器;粗煤泥分選;煤泥重介分選;浮選;介耗中圖分類號:TD942.7文獻(xiàn)標(biāo)識碼:A文章編號:1006-6772(2013)03-0026-04Applicationofth
3、reeproductsheavymediumcoalpreparationprocessinTangshanChun'aocoalpreparationplantBAIJingqi.XINGYumei.CHENYanchun(TangshanBranch,TiandiScience&TechnologyCo.,Ltd.,Tangshan063000,China)Abstract:ComplexcoalresourcesandwidecoalqualityfluctuationinTangshanChunaocoalprepar
4、ationplantledtolowercleancoalyield.Analysetheadvantagesanddisadvantagesofdense—mediumseparationandjigging,pre—deslimingandundeslimingseparation,pressurizedfeedingandunpressurizedfeeding,thendeterminethemainpreparationprocessisthreeproductsheavymediumcycloneprocess,w
5、hichisundeslimingandunpressurizedfeeding.Bycomparingspiral,TBSanddensemediumcyclone,adoptthelastonetoprepareslime.Atlast,combiningtheabovetwotechniquesastheproperpreparationtechnologyofTangshanChunaocoalpreparationplant.Theslimewateroftailingsisconcentratedbyfilters
6、,thewashingwaterisrecycled.Theadjustmentofproductsandslimewatertreatmentsystemisflexible.Theresultsshowthat,theinletpressureofthreeproductsdensemediumcyclonecanreachupto0.2MPa,thecoalmixedingangueislessthan1percent,theashofcleancoalandgangueisre—spectivelylessthan10
7、percentand70percent,theashofmiddingsis35percent,thehandingcapacitystabilizearound160t/h,sometimescanreachupto200t/h.Keywords:threeproductsdensemediumcyclone;coarseslimepreparation;dense—mediumseparation;flotation;mediumconsumption收稿日期:2013—02—19責(zé)任編輯:白婭娜作者簡介:白景啟(198O
8、一),男,黑龍江肇東人,學(xué)士,工程師,研究方向?yàn)榈V物加工。E-mail:bai_5957165@163com。引用格式:白景啟,邢玉梅,陳艷春三產(chǎn)品重介質(zhì)選煤工藝在唐山春澳選煤廠的應(yīng)用[J].潔凈燥技術(shù),2013,19(3):26—2926《沽凈煤技術(shù))2013年第19卷第3