120萬噸礦井型選煤廠設(shè)計(jì)-選礦專業(yè)畢業(yè)設(shè)計(jì)-畢業(yè)論文

內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì)說明書（畢業(yè)論文）1.2Mt/a礦井型選煤廠設(shè)計(jì)摘要摘要：本文主要敘述了1.2Mt/a礦井型選煤廠初步設(shè)計(jì)。入洗的原煤為四六兩礦按6：4的比例混合后的煤。原煤的灰分為28.18%，是強(qiáng)粘結(jié)性的良好的煉焦配煤。設(shè)計(jì)任務(wù)要求精煤產(chǎn)品灰分小于9.0%,水分小于12%。精煤產(chǎn)品作為煉焦煤，中煤銷售，矸石外運(yùn)。根據(jù)原煤的性質(zhì)及精煤質(zhì)量要求等,在進(jìn)行選煤方案比較的基礎(chǔ)上，確定出最佳的工藝流程和產(chǎn)品結(jié)構(gòu)。即該廠為重介質(zhì)選煤廠。經(jīng)過工藝流程計(jì)算、設(shè)備選型等，對主廠房和總平面進(jìn)行布置。同時做出了該廠的經(jīng)濟(jì)技術(shù)分析。關(guān)鍵詞：選煤廠設(shè)計(jì)重介質(zhì)分選技術(shù)經(jīng)濟(jì)關(guān)鍵詞:工藝流程,重介質(zhì)分選,技術(shù)經(jīng)濟(jì),選煤廠設(shè)計(jì)內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì)說明書（畢業(yè)論文）abstractThedesignof1.5Mt/apithedcoalpreparationplantabstract:Thethesismainlystatesthecourseofprimerdesigningonpithedcoalpreparationplantwhichproduces2.4milliontonsperyear.ThefeedingrawcoalwasAmixedwithBbytheproportion6：4.Theashcontentofrawcoalis28.18%,itsviscosityisstrong,itisagoodcoalforcokingmanufacture.Thedesigningtaskoftheashcontentofthecleancoalnomorethan9.0%anditsmoistureislessthan12%.Accordingtothenatureofrawcoalandthequalityrequestofcleancoal,onthebasisofthecomparisonofcoalpreparationplan,Itconfirmstheoptimaltechnologicalprocessandthestructureofproducts.That’stosay,itisthedensemediumseparationplant.Bythecalculationofprocessionandtheequipmentsselection.Itarrangesthemainworkshopandthetotalflat,thenanalysisontechnologyandeconomy.keywords:thecoalpreparationplantdesign，densemediumseparation，theanalysisontechnologyandeconomy，thecoalpreparationplantdesign前言本次設(shè)計(jì)的選煤廠是一座年處理量為1.2萬噸的礦井型選煤廠。遵循選煤廠有關(guān)規(guī)范，條例等國家各項(xiàng)方針政策。產(chǎn)品要求精煤灰分小于9%，做為煉焦用煤，中煤就地代銷，矸石外運(yùn)。其中精煤水分不超過12%，硫分不超過0.5%。設(shè)計(jì)力求達(dá)到工藝先進(jìn)，技術(shù)合理，工程量省，投資少的效果。選煤工藝采用50——0mm原煤不分級，不脫泥進(jìn)入無壓三產(chǎn)品重介旋流器，煤泥采用浮選的聯(lián)合流程。設(shè)備選型盡量考慮采用國內(nèi)技術(shù)成熟，處理能力大，效率高的設(shè)備。工藝布置按單系統(tǒng)布置，充分考慮系統(tǒng)的靈活性，在滿足工藝要求的前提下，簡化生產(chǎn)環(huán)境，減少占地面積，在方便檢修的前提下，盡量壓縮主廠房建筑體積。實(shí)現(xiàn)洗水閉路循環(huán)，宜采用洗水凈化再生系統(tǒng)。內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì)說明書PAGEPAGE26目錄摘要 Iabstract II前言 III第一章設(shè)計(jì)概要 11.1項(xiàng)目背景 11.2可行性研究概要 11.2.1原煤資料分析 11.2.2選煤產(chǎn)品組成 11.2.3選煤廠設(shè)計(jì)生產(chǎn)能力 11.2.4選煤廠位置與交通 11.2.5選煤方案的擬定 11.2.6工藝流程 11.2.7設(shè)備選擇 2第二章設(shè)計(jì)前提條件及規(guī)模 3第三章煤源及煤制特征 43.1煤源概況 43.1.1原料煤供應(yīng)情況 43.1.2主要煤源 43.2煤質(zhì)特征 43.2.1煤的物理性質(zhì)： 43.2.2煤的化學(xué)性質(zhì) 43.3煤的可選性 53.3.1資料分析 63.3.2浮沉資料分析： 6第四章選煤工藝 274.1選煤方法的確定 274.1.1煤的可選性 274.1.2入選方式 274.1.3選煤方法的比較 274.1.4工藝流程的確定 404.2工藝流程的簡述 414.2.1工藝流程說明 414.2.2工藝流程的特點(diǎn) 414.3工藝流程的計(jì)算 424.3.1準(zhǔn)備作業(yè)的計(jì)算 424.3.2分選作業(yè)的計(jì)算： 444.4工藝設(shè)備的選型與計(jì)算 634.4.1工藝設(shè)備選型與計(jì)算的原則和規(guī)定 634.4.2篩分設(shè)備的選型與計(jì)算 634.4.3破碎設(shè)備的選型與計(jì)算 644.4.4分選設(shè)備選型與計(jì)算 644.4.5脫水設(shè)備 654.4.6.分級和濃縮設(shè)備 674.4.7.輔助設(shè)備 694.5工藝布置圖 714.6主廠房工藝布置圖 724.6.1主廠房結(jié)構(gòu)特點(diǎn) 724.6.2產(chǎn)品倉 744.6.3煤泥壓濾車間 74第五章生產(chǎn)輔助設(shè)施 755.1設(shè)施概況 755.1.1機(jī)電修理車間 755.1.2空壓機(jī)車間 765.1.3浮選藥劑站 765.1.4介質(zhì)庫 765.1.5材料庫 765.2生產(chǎn)技術(shù)檢查 765.3給排水 775.3.1用水量及水壓 785.3.2給水系統(tǒng) 785.3.3排水系統(tǒng) 795.3.4濃縮機(jī) 795.4電氣 805.4.1供配電 805.4.2供配電系統(tǒng) 815.4.3主要電氣設(shè)備選型 825.4.4防雷及接地 825.4.5工藝系統(tǒng)設(shè)備的控制 825.4.6自動化 835.5檢測、計(jì)量、保護(hù)裝置 845.5.1檢測 845.5.2計(jì)量 845.5.3保護(hù)裝置 855.6生產(chǎn)管理系統(tǒng)及通信 855.6.1行政電話 855.6.2生產(chǎn)調(diào)度電話 855.6.3直通電話 855.6.4微機(jī)監(jiān)控與管理 855.7采暖、通風(fēng)及供熱 865.7.1采暖 865.7.2通風(fēng)除塵 865.7.3熱水及開水 875.7.4鍋爐房 875.7.5供熱管網(wǎng) 87第六章環(huán)境保護(hù) 886.1環(huán)境保護(hù) 886.1.1主要污染源和污染物 886.1.2防治措施 896.1.3污染防治措施的預(yù)期效果 906.2消防工業(yè)衛(wèi)生 906.2.1消防 906.2.2電器設(shè)備防火措施 916.2.3勞動安全 916.2.4工業(yè)衛(wèi)生 93第七章節(jié)能措施綜述 947.1耗能指標(biāo)及分析 947.1.1項(xiàng)目耗能指標(biāo): 947.1.2節(jié)能分析 947.2節(jié)能措施綜述 94第八章 生產(chǎn)組織和勞動定員 958.1勞動定員 95第九章職業(yè)安全與工業(yè)衛(wèi)生 97第十章技術(shù)經(jīng)濟(jì) 9810.1勞動定員及勞動生產(chǎn)率 9810.2透支估算及投資籌措 9810.2.1投資估算 9810.2.2選煤廠設(shè)計(jì)主要技術(shù)經(jīng)濟(jì)指標(biāo) 101致謝 103主要參考文獻(xiàn) 104 第一章設(shè)計(jì)概要1.1項(xiàng)目背景近年來，市場對煤質(zhì)要求越來越高，焦炭的形勢看好，該公司的焦炭生產(chǎn)規(guī)模擴(kuò)大，原選煤廠生產(chǎn)能力已不能滿足焦炭生產(chǎn)需要，直接購買精煤不利于企業(yè)在市場的競爭和經(jīng)濟(jì)效益的提高，因此需要新建一座年處理量為120萬噸的選煤煤廠，建設(shè)選煤廠，可以提高煤質(zhì)，增強(qiáng)企業(yè)的競爭能力，提高企業(yè)的經(jīng)濟(jì)效益這已是勢在必行。1.2可行性研究概要1.2.1原煤資料分析選煤廠主要入洗沙曲離柳礦區(qū)的北翼四號和南翼四號原煤，資源可靠，穩(wěn)定。所產(chǎn)煤種為極低硫煉焦煤，為國家環(huán)保型奇缺煤種。精煤灰分要求為9%時，其可選性為中等選煤。1.2.2選煤產(chǎn)品組成推薦的產(chǎn)品結(jié)構(gòu)為精煤、中煤、矸石、煤泥。1.2.3選煤廠設(shè)計(jì)生產(chǎn)能力選煤廠設(shè)計(jì)規(guī)模與焦化廠生產(chǎn)能力相配套，為年處理原煤120萬噸。1.2.4選煤廠位置與交通選煤廠水源取自地下水，電源自設(shè)變電所，交通運(yùn)輸便利。1.2.5選煤方案的擬定為了確定適合本廠入洗原煤的合理洗選加工，本次設(shè)計(jì)分別對不同的選煤方法進(jìn)行比較，為了保證生產(chǎn)出高質(zhì)量的精煤，使精煤的產(chǎn)量達(dá)到最大的回收率，滿足產(chǎn)品結(jié)構(gòu)多元化的要求，確定本次設(shè)計(jì)推薦的選煤方法為50-0mm三產(chǎn)品重介旋流器分選，洗煤泥浮選聯(lián)合工藝。1.2.6工藝流程工藝流程共包括50-0mm不脫泥、不分級無壓三產(chǎn)品重介旋流器分選及洗煤泥浮選和煤泥水處理環(huán)節(jié)四大部分。該工藝流程系統(tǒng)簡單靈活適應(yīng)性強(qiáng)，效率高。產(chǎn)品滿足設(shè)計(jì)的要求，洗水閉路循環(huán)。1.2.7設(shè)備選擇設(shè)備選型全采用國內(nèi)設(shè)備。全廠集控和自動化程度高，介質(zhì)密度控制手段先進(jìn)，調(diào)節(jié)快捷，精確度高。第二章設(shè)計(jì)前提條件及規(guī)模1、選煤廠生產(chǎn)小時能力為227.27噸，當(dāng)工作制度為年工作330天；每天工作16小時，選煤廠年處理能力為120萬噸。2、產(chǎn)品方案為：精煤、中煤、矸石、煤泥。3、原煤采用直接礦井給煤，精煤運(yùn)至精煤倉，中煤和尾煤運(yùn)至混煤倉，矸石進(jìn)裝車倉，裝車外運(yùn)。4、精煤產(chǎn)率按50%~70%計(jì)算，精煤水分≤12。噸原煤生產(chǎn)介耗≤2.5kg。5、新建選煤廠，包括膠帶機(jī)走廊、準(zhǔn)備車間、主廠房和濃縮機(jī)。第三章煤源及煤制特征3.1煤源概況3.1.1原料煤供應(yīng)情況原煤均是從礦井直接運(yùn)到選煤廠的，選煤廠的交通便利，運(yùn)輸方便，有可靠穩(wěn)定的原煤3.1.2主要煤源本廠入選煤層為北區(qū)4號、南區(qū)4號煤層，北區(qū)4號、南區(qū)4號煤層都屬于低灰,低硫,低磷,高發(fā)熱量,為很好的煉焦配煤。3.2煤質(zhì)特征3.2.1煤的物理性質(zhì)：該礦北區(qū)4#、北區(qū)5#煤層的顏色均呈黑色,玻璃光澤斷口處為階梯狀,條帶結(jié)構(gòu),及層裝結(jié)構(gòu)。3-1原煤的物理性質(zhì)煤樣名稱安息角摩擦角散密度抗碎強(qiáng)度度度Kg/m3SS%北區(qū)4#353188053.7南區(qū)4#342991258.293.2.2煤的化學(xué)性質(zhì)1、灰分分析:北區(qū)4#煤灰分為23.1%，南區(qū)4#煤灰分為21.65%，均屬于中灰煤，一般生產(chǎn)8-10級精煤。2、揮發(fā)分:北區(qū)4#煤的揮發(fā)分平均為23.58%屬中揮發(fā)分煤。南區(qū)4#煤的揮發(fā)分平均為17.42%屬低揮發(fā)分煤。3、有害物質(zhì)和元素分析:硫分分析:北區(qū)4#煤硫分平均為0.4%,為特低硫煤。南區(qū)4#煤硫分平均為0.5%,按比例6:4混合入洗，原煤為特低硫煤。元素分系:北區(qū)4#煤內(nèi)固定碳含量平均值為66.15%含量較高,南區(qū)4#內(nèi)固定碳含量穩(wěn)定,平均值為60.93%含量較高。3-2篩分總樣工業(yè)分析結(jié)果煤樣名稱全水%水分Mad%灰分Ad%揮發(fā)分vd%焦渣特征固定炭FCd%全硫St，d%發(fā)熱量QgrMJ/kg北區(qū)4#9.20.7223.123.58666.150.426.65南區(qū)4#6.10.721.6517.42760.930.528.1893-3結(jié)焦特性分析結(jié)果煤樣名稱.粘結(jié)指數(shù)GRI自膨系數(shù)CSN焦質(zhì)層厚度X值Y值北區(qū)4#91829.011.5南區(qū)4#8683314.5按中國煤炭分類標(biāo)準(zhǔn)（GB5751-86）劃分，一精煤揮發(fā)分（900℃Vdaf%）和粘結(jié)指數(shù)（GR。I。）為主要分類指標(biāo)，嬌質(zhì)層厚度（Ymm）、奧亞膨脹度（b%）為輔助指標(biāo)進(jìn)行。選煤廠入選的南、北區(qū)4#煤層都屬主焦煤。3.3煤的可選性煤質(zhì)資料主要是篩分、浮沉試驗(yàn)資料，應(yīng)用在工藝流程設(shè)計(jì)之前，經(jīng)過審查、考證、調(diào)整和綜合。3.3.1資料分析該選煤廠設(shè)計(jì)資料為華晉焦煤有限責(zé)任公司沙曲選煤廠提供，資料內(nèi)容如下：華晉沙曲北區(qū)4#煤原煤篩分浮沉實(shí)驗(yàn)報(bào)告1-1——1-6華晉沙曲南區(qū)4#煤原煤篩分浮沉實(shí)驗(yàn)報(bào)告2-1——2-6北區(qū)4#、南區(qū)4#原煤篩分資料分析篩分試驗(yàn)綜合表將兩煤層校正后的生產(chǎn)大樣篩分試驗(yàn)報(bào)告表中產(chǎn)率分別按配比9：1相加得到綜合產(chǎn)率，灰分加權(quán)平均，得到篩分試驗(yàn)綜合表。自然級，破碎級，自然級與破碎級綜合煤篩分綜合表將兩種煤的自然級+破碎級占50-0.5的數(shù)量表中各粒級占50-0.5的產(chǎn)率換算為占50-0.0mm的產(chǎn)率后與各種的-0.5mm小篩分試驗(yàn)報(bào)告表綜合，產(chǎn)率分別按配比想加，灰分加權(quán)平均，分別計(jì)算自然級和破碎級，最后兩級相加，得到自然級與破碎級50-0mm篩分綜合表，且灰分按大篩分表中灰分校正。見表1-2，2-2，3-2小篩分試驗(yàn)綜合表將兩層的“-0.5mm小篩分試驗(yàn)報(bào)告表”中自然級和破碎級的各網(wǎng)目的占全樣產(chǎn)率按配比相加得到綜合產(chǎn)率，灰分加權(quán)平均。灰分按各表2中-0.5mm級的校正后得到小篩分綜合試驗(yàn)表。見表1-6，2-6，3-6。綜合煤樣篩分資料分析：根據(jù)優(yōu)化計(jì)算結(jié)果，方案選取比較有代表性的配煤比例，北煤/南煤=4/6，作為最終配比。綜合煤樣篩分資料見表3-1，3-2。3.3.2浮沉資料分析：將兩礦的“原煤50-0.5mm級浮沉實(shí)驗(yàn)綜合報(bào)告表”中各粒級。各密度占50-0.5mm的產(chǎn)率分別與各層50-0.5mm占50-0.5mm的產(chǎn)率，各級占帶煤泥的產(chǎn)率，配比三個參數(shù)相乘后得到綜合產(chǎn)率，灰分加權(quán)平均，并且按表2中50-0.5mm級的校正后灰分校正。并計(jì)算各密度級占50-0.5MM去煤泥后的產(chǎn)率，得到浮物累計(jì)，和±0.1含量。依次作出可選性曲線，分別見:表1-（3、4、5、8），2-（3、4、5、8），3-（3、4、5、8）。北區(qū)煤泥小浮沉試驗(yàn)資料見表1-7。南區(qū)曲煤泥小浮沉試驗(yàn)資料見表2-7。配煤比例4/6時，-0.5mm綜合煤樣小浮沉試驗(yàn)報(bào)告表見表3-7?？傊涿罕壤?/6時，50-0.5mm綜合級煤樣浮沉試驗(yàn)報(bào)告表見表3-5。3.3.3可選性分析：粒度產(chǎn)物名稱產(chǎn)率灰分占全樣校正前Ad%校正后Ad%+100煤0.7930.9431.62夾矸0.5651.4652.14矸石1.9476.1076.78小計(jì)3.2961.0261.7010050煤1.9321.5422.22夾矸0.6849.9850.66矸石2.1077.3378.01小計(jì)4.7150.5251.20+50mm合計(jì)8.0051.8652.545025煤7.2939.2439.922513煤8.6329.2329.91136煤16.5024.3425.0263煤18.1817.9818.6630.5煤27.7413.6814.370.50煤13.6613.2113.8950--0合計(jì)92.0019.8620.54總計(jì)100.0022.4223.10除去矸石后95.9620.1320.81從表3-8可以看出，煤綜合煤樣的分選密度大于1.50時可選性為中等可選，分選密度在1.40左右時為難選煤，所以此煤應(yīng)用重介質(zhì)分選比較好。附表格1（1—8），2（1—8），3（1—8）表1—1四號北翼原煤篩分表表1—2四號北翼自然級與破碎級篩分綜合表密度級mm自然級Ka=92.00破碎級Kb=8.00綜合級K=100校正后數(shù)量灰分?jǐn)?shù)量灰分?jǐn)?shù)量灰分灰分占本級%占全樣%%占本級%占全樣%占本級%占全樣%%%123456789101150—257.937.2939.2463.675.0951.8812.3812.3844.4445.5425—139.388.6329.2312.931.0443.929.679.6730.8031.9013—617.9316.5024.349.600.7739.6817.2717.2725.0226.126—319.7618.1817.985.070.4135.0318.5918.5918.3519.453—0.530.1527.7413.696.200.4927.9628.2328.2313.9415.040.5—014.8513.6613.212.530.2022.4913.8613.8613.3514.45合計(jì)10092.0019.861008.0046.6010010022.0023.10表1—3四號北翼篩分浮沉實(shí)驗(yàn)綜合報(bào)告表篩分浮沉密度級kg/L50-25（mm）25-13(mm)13-6(mm)6-3(mm)3-0.5(mm)50-0.5(mm)產(chǎn)率9%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）<1.302.850.3473.773.890.3572.8018.493.1304.2126.484.6694.9440.9810.3963.5123.2518.8993.971.30-1.4021.742.6509.3134.773.1958.4632.655.5268.8236.286.3988.5224.186.1358.2829.4023.9048.611.40-1.507.940.96817.7711.691.07417.6510.281.74117.639.481.67217.9014.743.74017.0811.319.19517.471.50-1.604.910.59826.166.290.57827.286.281.06327.055.620.99125.843.02.0.76625.684.923.99626.391.60-1.708.831.07634.728.610.791035.127.561.33335.174.581.16131.686.855.57134.341.70-1.806.250.76242.427.520.69143.325.580.94543.362.910.51442.076.151.56142.165.504.47342.631.80-2.008.090.98650.954.840.44452.494.190.70952.793.750.66253.643.300.83654.254.473.63752.74>2.0039.394.80079.6222.392.05776.4015.372.60177.997.901.39477.873.050.77578.8014.3011.62778.42合計(jì)100.0012.1946.03100.009.1932.76100.0016.9226.30100.0017.6319.60100.0025.3714.97100.0081.3025.00煤泥1.600.2015.584.880.4715.321.980.3417.345.120.9516.7010.142.8615.665.604.8215.95總計(jì)100.0012.3945.54100.009.6631.91100.0017.2726.12100.0018.5919.45100.0028.2315.04100.0086.1224.49表1—4四號北翼小篩分實(shí)驗(yàn)表密度級綜合累計(jì)占本級灰分占本級灰分1234540-6042.9714.0942.9714.0960-8014.9716.9157.9414.8280-10025.3714.4483.3114.70100-120.13.4315.4196.7414.80120.003.2616.37100.0014.87合計(jì)100.0014.87表1-5四號北翼小浮沉實(shí)驗(yàn)表密度級綜合浮物累計(jì)占本級%占全級%灰分%產(chǎn)率%灰分%123456-1.38.911.234.328.914.321.3-1.433.814.697.8042.727.071.4-1.530.234.1912.1072.959.151.5-1.68.801.2212.3281.759.501.6-617.3087.9610.051.7--1.82.530.3522.6390.4910.401.8--2.06.000.8327.7296.4911.48>2.03.510.4975.36100.0013.72合計(jì)100.0013.8613.72

表1-6四號北翼浮沉實(shí)驗(yàn)綜合表密度級原煤浮物累計(jì)沉物累計(jì)鄰近密度物含量占本級%占全級%灰分%產(chǎn)率%灰分%產(chǎn)率%灰分%分選密度±0.1kg/l數(shù)量%—1.3021.1520.134.9421.154.94100.0023.561.351.191.30—1.4030.0428.598.4851.197.0278.8528.561.444.111.40—1.5014.0713.3915.7865.268.9148.8140.911.519.551.50—1.605.485.2223.0870.7410.0034.7451.091.612.241.60—1.706.766.4332.0777.5011.9329.2656.341.711.821.7—1.85.064.8241.2082.5613.7222.5063.631.89.761.8-2.04.704.4748.0687.2615.5717.4470.141.917.442.0012.7412.1278.28100.0023.5612.7478.28總計(jì)100.0095.1723.56

粒度產(chǎn)物名稱產(chǎn)率灰分占全樣校正前Ad%校正后Ad%+100煤0.9128.8929.43夾矸0.6248.7349.27矸石1.7267.0967.63小計(jì)3.2552.8953.4310050煤1.6220.3220.86夾矸0.5748.7349.27矸石1.9872.4873.02小計(jì)4.1748.9749.51+50mm合計(jì)7.4250.6951.235025煤6.1346.6247.162513煤12.6830.3130.85136煤13.7721.4722.0163煤14.6715.5216.0630.5煤30.6212.6113.150.50煤14.7211.8712.4150--0合計(jì)92.5818.9519.49總計(jì)100.0021.3021.84除去矸石后96.3019.4319.97表2—1四號南翼原煤篩分表

表2—2四號南翼自級與破碎級篩分綜合表密度級mm自然級Ka=92.58破碎級Kb=7.42綜合級K=100數(shù)量灰分?jǐn)?shù)量灰分?jǐn)?shù)量灰分占本級%占全樣%%占本級%占全樣%占本級%占全樣%%1234567891050—256.626.1346.6249.333.6658.559.799.7951.0825—1313.7012.6830.3122.911.7056.0214.3814.3833.3513—614.8713.7721.479.570.7157.3614.4814.4823.236—315.8514.6715.529.030.6750.3215.3415.3417.043—0.533.0730.6212.617.010.5264.1131.1431.1413.470.5—015.8914.7111.872.150.1677.8614.8714.8712.58合計(jì)10092.5818.951007.4257.9110010021.84表2—3四號南翼篩分浮沉實(shí)驗(yàn)綜合報(bào)告表篩分浮沉密度級kg/L50-25（mm）25-13(mm)13-6(mm)6-3(mm)3-0.5(mm)50-0.5(mm)產(chǎn)率9%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）<1.301.950.1904.8821.643.0064.5733.324.5784.2941.275.6503.6155.2516.4713.6736.9629.8953.851.30-1.4011.221.09410.0326.273.65010.9426.883.6939.1030.524.1789.4324.407.2749.4824.5919.8899.741.40-1.504.360.42519.977.631.06019.549.501.30519.479.461.39518.807.192.14320.737.706.22819.811.50-1.603.970.38726.287.801.08429.215.650.77725.474.250.58227.172.910.86825.994.573.69827.041.60-1.707.530.73434.534.730.65736.372.970.40833.972.080.28536.091.190.35533.243.012.43435.001.70-1.809.150.89242.852.130.29743.401.670.23041.421.190.16343.340.770.22941.712.241.81142.661.80-2.0017.771.73249.732.460.34251.382.640.36348.821.610.22051.891.490.44547.303.843.10249.61>2.0044.044.29174.3227.343.79881.7117.372.38778.579.621.31780.376.802.02779.8217.0913.82078.47合計(jì)100.009.7451.23100.0013.8933.88100.0013.7423.80100.0013.7917.14100.0029.8113.43100.0080.8822.64煤泥0.430.0415.393.400.4918.055.130.7412.8110.741.6516.274.271.3314.444.994.2515.29總計(jì)100.009.7851.08100.0014.3833.35100.0014.4823.23100.0015.3417.04100.0031.1413.47100.0085.1323.80表2—4四號南翼小篩分實(shí)驗(yàn)表密度級綜合累計(jì)占本級灰分占本級灰分1234540-6035.3712.2235.3712.2260-8035.8211.6271.1911.9280-10015.9611.7487.1411.88100-120.3.8513.1291.0011.94120.009.0014.24100.0012.14合計(jì)100.0012.14表2-5四號南翼煤泥小浮沉實(shí)驗(yàn)表密度級綜合浮物累計(jì)占本級%占全級%灰分%產(chǎn)率%灰分%123456-1.313.321.981.4213.321.421.3-1.450.677.684.1363.993.571.4-1.523.053.4312.5687.045.951.5-1.64.760.7126.6191.817.021.6-1.82.630.3949.9494.448.22+-1.85.560.8378.63100.0012.14合計(jì)100.0014.8712.14

表2-6四號南翼浮沉實(shí)驗(yàn)綜合表密度級原煤浮物累計(jì)沉物累計(jì)鄰近密度物含量占本級%占全級%灰分%產(chǎn)率%灰分%產(chǎn)率%灰分%分選密度±0.1kg/l數(shù)量%—1.3033.2431.883.7033.243.70100.0022.031.361.991.30—1.4028.7527.578.1461.995.7666.7631.161.438.831.40—1.5010.089.6717.2172.077.3638.0148.571.514.681.50—1.604.604.4126.9676.678.5427.9359.80—1.702.532.4335.0079.209.3823.3366.381.74.821.7—1.82.292.2043.9781.4910.3520.8021.8-2.03.233.1049.6184.7211.8418.5173.441.918.512.0015.2814.6578.48100.0022.0315.2878.48總計(jì)100.0095.9122.03

表3—1南翼北翼兩礦原煤篩分表粒度產(chǎn)物名稱產(chǎn)率灰份占全樣Ad%+100煤0.8031.37夾矸0.5651.83矸石1.9275.97小計(jì)3.2860.9710050煤1.9022.11夾矸0.6750.54矸石2.0977.53小計(jì)4.6651.53+50mm合計(jì)7.9455.435025煤7.1740.542513煤9.0430.04136煤16.2324.7663煤17.8318.4530.5煤28.0314.240.50煤13.7613.7350--0合計(jì)92.0620.43總計(jì)100.0023.21

表3—2南翼北翼兩礦自然級與破碎級綜合篩分表粒度級mm自然級Ka=92.06Ka=92．06破碎級Kb=7.94Kb=7．94綜合級K=100.00K=100校正后數(shù)量灰分?jǐn)?shù)量灰分?jǐn)?shù)量灰分灰分占本級%占全樣%%占本級%占全樣%%占本級%占全樣%%%123456789101150-257.807.1839.8662.234.9452.4112.1212.1244.9845.9625~139.809.0229.3813.931.1145.9110.1310.1331.1932.1713~617.6316.2324.109.600.7641.4516.9916.9924.8825.866~319.3617.8217.785.470.4337.5718.2518.2518.2519.2330.530.4528.0413.576.280.5031.9928.5428.5413.8914.870.5014.9613.7713.072.490.2027.1613.9713.9713.2714.25合計(jì)10092.0619.771007.9447.7310010021.9922.97表3—3南翼北翼兩礦綜合篩分浮沉實(shí)驗(yàn)表篩分浮沉密度級kg/L50-25（mm）25-13(mm)13-6(mm)6-3(mm)3-0.5(mm)50-0.5(mm)產(chǎn)率9%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分產(chǎn)率（%）灰分占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）占本級（%）占全樣（%）灰分（%）<1.302.750.343.855.670.553.4819.983.334.2227.964.814.7442.4010.943.5324.5919.973.941.30-1.4020.692.479.3533.923.288.6532.075.328.8435.706.158.6024.206.258.4028.9023.478.691.40-1.507.590.9117.9011.281.0917.7810.211.6917.809.481.6317.9913.993.6117.2710.998.9317.631.50-1.604.810.5726.176.440.6227.516.211.0326.915.490.9425.943.010.7825.714.853.9426.431.60-1.708.701.0434.698.220.7935.226.731.1235.077.011.2136.284.241.0932.566.465.2534.781.70-1.806.550.7842.486.980.6743.325.190.8643.302.740.4742.135.621.45342.631.80-2.009.061.0850.714.610.4552.434.040.6752.523.540.6153.563.120.8153.924.463.6252.46>2.0039.854.7579.0322.882.2177.0315.572.5878.058.081.3978.173.420.8879.0014.5411.8178.34合計(jì)100.0011.9446.55100.009.6632.87100.0016.6030.96100.0017.2119.43100.0025.8114.85100.0081.2224.90煤泥1.480.1815.584.730.4715.522.290.3816.335.681.0316.629.562.7015.615.544.7615.88總計(jì)100.0012.1246.09100.0010.1332.07100.0016.9830.63100.0018.2419.27100.0028.5114.92100.0085.9824.40表3-4南翼北翼兩礦小浮沉綜合實(shí)驗(yàn)表密度級綜合浮物累計(jì)占本級%占全級%灰分%產(chǎn)率%灰分%123456-1.39.341.303.919.343.911.3-1.435.504.967.2844.846.581.4-1.529.514.1212.1474.358.791.5-1.68.401.1713.1482.759.231.6-1.75.720.8018.0488.479.801.7--1.82.410.3424.1090.8810.181.8--2.05.680.7930.2396.5611.36>2.03.440.4875.63100.0013.57合計(jì)100.0013.9613.57表3—5南翼北翼兩礦小篩分綜合實(shí)驗(yàn)表密度級綜合累計(jì)占本級灰分占本級灰分1234540-6042.2113.9342.2113.9360-8017.0515.8059.2614.4780-10024.4214.2683.6814.41100-120.12.4815.3496.1614.53120.003.8415.87100.0014.58合計(jì)100.0014.58

表3—6南翼北翼兩礦浮沉實(shí)驗(yàn)綜合表密度級Kg/L原煤累計(jì)分選密度浮物沉物±0.1kg/l產(chǎn)率%灰分%產(chǎn)率%灰分%產(chǎn)率%灰分%密度產(chǎn)率%12345678<1.322.364.7622.364.76100.0023.411.352.281.3--1.429.928.4552.286.8777.6428.781.443.591.4--1.513.6715.8965.958.7447.7241.531.519.061.5--1.65.3923.4171.349.8534.0551.821.611.721.6--1.76.3332.1977.6711.6728.6657.171.711.111.7--1.84.7841.3382.4513.3922.3331.8--2.04.5548.1787.0015.2117.5570.491.917.55>2.013.0078.30100.0023.4113.0078.30總計(jì)100.0023.41內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì)說明書PAGEPAGE101第四章選煤工藝4.1選煤方法的確定4.1.1煤的可選性給定灰分9％，水分12％，根據(jù)甲乙兩礦50—0.5粒級浮沉資料綜合繪制的可選性曲線得出當(dāng)要求精煤灰分為9%時，其分選密度為1.50<1.7g/cm3,即要以扣除沉矸（+2.00g/cm3）為100%計(jì)算δ±0.1含量，根據(jù)可選性曲線查得δ±0.1=19.80根據(jù)中國煤炭可選性評定標(biāo)準(zhǔn)8（GB/T16147-1996）對照可得出此混合煤為中等選煤。4.1.2入選方式在混合礦的H-R曲線上查得=68.8λ=21.5據(jù)精煤高產(chǎn)率原則選其元灰分為時21.5，甲、乙兩礦的H-R曲線上查得：δ甲=1.52，δ乙=1.，f=|δ甲-δ乙|=0.03<0.05所以可以混合入選。4.1.3選煤方法的比較一、跳汰分選指標(biāo)計(jì)算1.方案（1）由可選性確定理論分選密度δp1°=1.70，δp2°=1.50?？蛇x性評定為中等選，確定實(shí)際分選密度δp1=1.80，δp2=1.55。按不分級跳汰選煤取矸石段I1=0.17，I2=0.19。每個密度級取密度的平均值。用跳汰近似公式計(jì)算t值，并查附表，得到分配率ε%。1.跳汰分選指標(biāo)計(jì)算a.矸石段將δp1=1.80，I1=0.17代入查表得ε值密度級-1.3（取1.25）t===-4.613ε=0密度級1.3-1.4（取1.35）t===-3.280ε=0.02密度級1.4-1.5t===-2.283ε=1.12密度級1.5-1.6t===-1.487ε=6.84密度級1.6-1.7t===-0.824ε=20.50密度級1.7-1.8t===-0.256ε=39.90密度級1.8-2.0t===0.467ε=69.97密度級+2.0（取2.2）t===1.609ε=94.61中煤段將δp1=1.55，I1=0.19代入密度級-1.3t==-2.799ε=0.25密度級1.3-1.4t==-1.605ε=5.43密度級1.4-1.5t==-0.712ε=23.83密度級1.5-1.6t==0ε=50.00密度級1.6-1.7t==0.593ε=72.34密度級1.7-1.8t==1.101ε=86.45密度級1.8-2.0t==1.748ε=95.98密度級+2.0（取2.2）t==2.770ε=99.724-1跳汰產(chǎn)品設(shè)計(jì)指標(biāo)計(jì)算表密度級入料洗矸二段入料中煤精煤γ,%A,%ε,%γ,%A,%γ,%A,%ε,%γ,%A,%γ,%A,%12345678910111213-1.322.364.760.000.004.7622.364.760.250.054.7622.314.761.3-1.429.928.450.020.018.4529.918.455.431.628.4528.298.451.4-1.513.6715.891.120.1515.8913.5215.8923.833.2215.8910.3015.891.5-1.65.3923.416.840.3723.415.0223.4150.002.5123.412.5123.411.6-1.76.3332.1920.501.3032.195.0332.1972.343.6432.191.3932.191.7-1.84.7841.3339.901.9141.332.8741.3386.452.4841.330.3941.331.8-2.04.5548.1769.973.1848.171.3748.1795.981.3148.170.0648.17+2.013.0078.3094.6112.3078.300.7078.3099.720.7078.300.0078.30合計(jì)100.023.4119.2264.9480.7813.5215.5329.8865.259.682.方案（2）由可選性確定理論分選密度δp1°=1.70，δp2°=1.50?？蛇x性評定為中等選，確定實(shí)際分選密度δp1=1.80，δp2=1.52。按不分級跳汰選煤取矸石段I1=0.17，I2=0.19。每個密度級取密度的平均值。用跳汰近似公式計(jì)算t值，并查附表，得到分配率ε%。1.跳汰分選指標(biāo)計(jì)算a.矸石段將δp1=1.80，I1=0.17代入查表得ε值密度級-1.3（取1.25）t===-4.613ε=0密度級1.3-1.4（取1.35）t===-3.280ε=0.02密度級1.4-1.5t===-2.283ε=1.12密度級1.5-1.6t===-1.487ε=6.84密度級1.6-1.7t===-0.824ε=20.50密度級1.7-1.8t===-0.256ε=39.90密度級1.8-2.0t===0.467ε=69.97密度級+2.0（取2.2）t===1.609ε=94.61中煤段將δp1=1.52，I1=0.19代入密度級-1.3t==-2.600ε=0.47密度級1.3-1.4t==-1.405ε=8.01密度級1.4-1.5t==-0.513ε=30.40密度級1.5-1.6t==0.199ε=57.89密度級1.6-1.7t==0.792ε=78.58密度級1.7-1.8t==1.300ε=90.32密度級1.8-2.0t===1.947ε=97.42密度級+2.0（取2.2）t===3.027ε=99.874-2跳汰產(chǎn)品設(shè)計(jì)指標(biāo)計(jì)算表密度級入料洗矸二段入料中煤精煤γ,%A,%ε,%γ,%A,%γ,%A,%ε,%γ,%A,%γ,%A,%12345678910111213-1.322.364.760.000.004.7622.364.760.470.114.7622.254.761.3-1.429.928.450.020.018.4529.918.458.012.408.4527.518.451.4-1.513.6715.891.120.1515.8913.5215.8930.404.1115.899.4115.891.5-1.65.3923.416.840.3723.415.0223.4157.892.9123.412.1123.411.6-1.76.3332.1920.501.3032.195.0332.1978.583.9532.191.0832.191.7-1.84.7841.3339.901.9141.332.8741.3390.322.5941.330.2841.331.8-2.04.5548.1769.973.1848.171.3748.1797.421.3348.170.0448.17+2.013.0078.3094.6112.3078.300.7078.3099.870.7078.300.0078.30合計(jì)100.023.4119.2264.9480.7813.5218.1028.0362.689.34二．重介（三產(chǎn)品）分選指標(biāo)計(jì)算1.方案（1）由可選性曲線確定理論分選密度δp1°=1.50，δp2°=1.70，可選性評定為較難選，確定實(shí)際分選密度δp1=1.55，δp2=1.80。按三產(chǎn)品重介分選設(shè)備取可能偏差E1=0.05，E2=0.08，每個密度級取密度的平均值，用重介選近似公式計(jì)算t值a.主選段將δp1=1.55，E1=0.05代入密度級-1.3t===-4.050ε=0密度級1.3-1.4t==-2.700ε=0.35密度級1.4-1.5t==-1.350ε=8.85密度級1.5-1.6t==0.00ε=50.00密度級1.6-1.7t==1.35ε=91.15密度級1.7-1.8t==2.70ε=99.65密度級1.8-2.0t==4.725ε=100密度級+2.0t==8.775ε=100b.再選段δp2=1.80，E2=0.08代入密度級-1.3t==-4.641ε=0密度級1.3-1.4t==-3.797ε=0.01密度級1.4-1.5t==-2.953ε=0.16密度級1.5-1.6t==-2.109ε=1.75密度級1.6-1.7t==-1.266ε=10.27密度級1.7-1.8t==-0.422ε=33.65密度級1.7-1.8t==0.844ε=80.06密度級+2.0（取2.2）t==3.375ε=99.964-3重介旋流器三產(chǎn)品設(shè)計(jì)指標(biāo)計(jì)算表密度級入料精煤二段入料中煤矸石γ,%A,%ε,%γ,%A,%γ,%A,%ε,%γ,%A,%γ,%A,%12345678910111213-1.322.364.76022.364.7604.76004.7604.761.3-1.429.928.450.3529.828.450.108.450.0108.450.18.451.4-1.513.6715.898.8512.4615.891.2115.890.161.2115.89015.891.5-1.65.3923.4150.002.6923.412.7023.411.752.6523.410.0523.411.6-1.76.3332.1991.150.5632.195.7732.1910.275.1832.190.5932.191.7-1.84.7841.3399.650.0241.334.7641.3333.653.1641.331.6041.331.8-2.04.5548.17100048.174.5548.1780.060.9148.173.6448.17+2.013.0078.30100078.3013.0078.3099.960.0178.3012.9978.30合計(jì)10023.4167.919.3432.0913.1232.2618.9767.452.方案（2）由可選性曲線確定理論分選密度δp1°=1.50，δp2°=1.70，可選性評定為較難選，確定實(shí)際分選密度δp1=1.52，δp2=1.80。按三產(chǎn)品重介分選設(shè)備取可能偏差E1=0.05，E2=0.08，每個密度級取密度的平均值，用重介選近似公式計(jì)算t值a.主選段將δp1=1.52，E1=0.05代入密度級-1.3t===-4.320ε=0密度級1.3-1.4t==-2.295ε=0.16密度級1.4-1.5t==-0.945ε=17.23密度級1.5-1.6t==0.405ε=65.72密度級1.6-1.7t==1.755ε=96.83密度級1.7-1.8t==3.105ε=99.90密度級1.8-2.0t==5.13ε=100密度級+2.0t==9.18ε=100b.再選段δp2=1.80，E2=0.08代入密度級-1.3t==-4.641ε=0密度級1.3-1.4t==-3.797ε=0.01密度級1.4-1.5t==-2.953ε=0.16密度級1.5-1.6t==-2.109ε=1.75密度級1.6-1.7t==-1.266ε=10.27密度級1.7-1.8t==-0.422ε=33.65密度級1.7-1.8t==0.844ε=80.06密度級+2.0（取2.2）t==3.375ε