1、煤源煤质.doc

神火集团梁北矿井及选煤厂改扩建可行性研究报告（选煤厂部分） 煤源和煤质1煤源和煤质1.1 煤源概况梁北选煤厂入洗原煤主要为梁北井田的二1煤，二1煤为中低灰、低硫、特低磷、高发热量、中等粘结的瘦煤，选煤厂入洗原煤包括梁北矿井来煤2.40Mt/a；边沟煤矿0.45Mt/a，昌龙煤矿0.60Mt/a，收购地方煤矿煤炭0.55Mt/a。1.1.1 煤层梁北井田含煤地层为晚石炭系太原群，早二迭系山西组、晚期下石盒子组及晚二叠系早期上石盒子组，共划分八个煤组。总厚约717m，含煤12层，煤层总厚12.5m，含煤系数为1.75%。井田内可采和局部可采煤层为五层，其中：二1煤基本全区可采，六4煤层在F1断层以北大部可采，二3、三14、四7煤局部可采。可采煤层的总厚约7.0m，可采系数为0.98%，其中二1煤占0.58%，占可采煤层一半以上。二1煤层赋存于山西组底部，是本矿井的主要开采煤层，上距香炭砂岩27m，距砂锅窑砂岩62.8m 。煤层0-10.79m，平均4.18m ，一般厚3-6m，倾角为815。煤层结构简单，在025-019线之间有少数点含1-2层炭质泥岩和黑色泥岩夹矸。二1煤具有东厚西薄特点，属较稳定型煤层。直接顶板主要是大占沙岩，区内稳定，厚度0.49-36.29m，岩性为中-粗粒砂岩，岩石坚硬，岩体稳定性较好，抗压强度849-888kg/cm2。在虎头山断层以北，顶板多属泥岩、砂质泥岩，局部有薄层炭质泥岩，厚度0.1-24.95m，节理、裂隙发育，易风化碎裂，岩体稳定性差。底板多为泥岩，砂质泥岩、炭质泥岩或细砂岩，泥岩互层，岩体稳定性差。井田可采煤层特征见表1-1-1，可采煤层主要煤质指标见表1-1-2。1-23中煤国际工程集团武汉设计研究院 煤 层 特 征 表 表1-1-1序号煤层名称煤层厚度（m）间距（m）容重（t/m2）可采程度稳定性煤层结构煤层顶底板岩性顶板底板1六40-1.421.01160.4077.9166.013.01.48大部可采较稳定简单砂质泥岩或粉砂岩砂质泥岩或粉砂岩2四70-1.800.591.52局部可采不稳定较简单泥岩或砂质泥岩泥岩或砂质泥岩3三40-2.240.621.52局部可采不稳定简单砂质泥岩或细-中粒砂岩泥岩或砂质泥岩4二30-2.510.321.34局部可采不稳定简单泥岩大占砂岩5二10-10.794.181.37主要可采稳定020勘探线以西煤层有分岔大占砂岩或泥岩砂岩、泥岩互层可采煤层主要煤质指标一览表表1-1-2煤 层指 标类 别原 煤精 煤煤种名称Ag%SgQ%Pg%QgDT卡/克Ag%Vt%Ymm回收率%六4两极值20.72-43.160.29-1.100.003-0.0104530-68207.77-14.7018.74-24.5719.0-27.080.0-59.0肥焦焦常见值25.72-36.360.41-0.840.004-0.0085120-64909.02-12.9519.8820.0-23.510.0-25.0平均（点数）30.72(22)0.62(22)0.006(22)5760(22)11.18(21)22.30(21)21.5(10)17.9(20)四7两极值28.32-48.140.19-0.550.005-0.0174220-603010.95-14.9220.30-23.004.0-9.0焦煤常见值35.11-43.220.29-0.340.007-0.0084450-537011.89-13.9521.25-22.57平均（点数）39.37(10)0.33(9)0.008(7)4980(10)13.10(7)21.64(7)焦值特征6-76.0(6)三14两极值23.24-48.680.25-1.320.002-0.0104750-6530845-24.2017.64-24.1715.5-24.53.0-29.0焦煤常见值25.31-39.610.38-0.900.003-0.0085080-62509.14-15.5818.05-21.1817.5-22.010.0-23.0平均（点数）31.63(28)0.62(24)0.005(11)5630(27)12.13(25)20.50(25)20.0(7)16.2(21)二3两极值6.21-41.880.26-1.200.003-0.0174710-82003.79-12.2114.62-21.505.5-16.514.0-81.0瘦焦瘦常见值10.39-24.450.32-0.480.004-0.0086260-79505.28-9.4215.39-18.428.0-14.028.0-67.0平均（点数）18.97(23)0.41(20)0.007(16)6940(21)7.69(22)17.11(22)11.5(20)43.0(23)二1两极值8.94-40.150.26-1.640-0.0794840-79704.53-13.6714.45-18.910-14.515.0-76.4瘦煤常见值10.14-20.870.3-0.670.003-0.0405980-79805.95-9.9115.04-17.444.0-12.030.0-64.0平均（点数）15.70(132)0.50(116)0.015(101)5910(123)7.98(129)16.44(128)8.5(121)44.4(116)备 注四7煤的煤种牌号据其煤质指标及六14煤的变质程度推断1.2 煤质特征根据河南省煤炭质量监督检验站提供的煤质检验报告，梁北矿井二1煤的煤质特征见表1-2-1。梁北二1煤层煤质特征表表1-2-1产品名称及序号检验项目计量单位检验结果备注名称符号原煤浮煤煤生产煤样堆密度Ds,art/m0.78/块煤最大粒度长mm401/宽mm224/厚mm109/质量kg7.350安息角度45/摩擦角度34/全水分Mt%6.3/水 分Mad%0.360.44灰 分Ad%14.916.69挥发分Vd%15.6815.71焦渣特征CRC66固定碳FCd%69.4177.60发热量Qgr,v,dMJ/kg30.26/Cal/g7236/全 硫St,d%0.60/浮煤回收率%/38浮煤比重液密度Kg/L/1.4梁北二1煤层煤质特征表续表1-2-1产品名称及序号检验项目计量单位检验结果备注名称符号原煤浮煤煤生产煤样硫化铁硫Sp,d%0.28/硫酸盐硫Ss,d%0/有机硫So,d%0.32/碳Cd%75.93/氢Hd%3.71氧Od%3.51/氮Nd%1.34/碳酸盐CO2CO2，ad%1.20/抗碎强度SS%53.5/可磨性指数HGI142/真相对密度TRD1.46/燃点氧化样384/原煤样392/还原样395/灰熔融性变形温度DT1400/软化温度ST1400/半球温度HT1400/流动温度FT1400/梁北二1煤层煤质特征表续表1-2-1产品名称及序号检验项目计量单位检验结果备注名称符号原煤浮煤煤生产煤样粘结指数G/41自由膨胀序数/3胶质层Xmm/34.5Ymm/9.8曲线形状/平滑下降融合情况/部分熔合葛金干馏焦油产率Tar%/2.78半焦产率CR%/90.38干馏总水分Water%/1.25损失量%/5.59焦型/F奥亚膨胀性软化温度T1/454膨胀温度T2/固化温度T3/496最大收缩度a/24最大膨胀度b/仅收缩根据特征表对二1煤的主要煤质特征分析如下：（1）灰分：二1煤灰分Ad 14.91%，属低中灰煤。（2）水分：二1煤内在水分（Mad）低，为0.36%，原煤全水（M t）为6.3%，亦不高。原煤转运途中应注意防尘。（3）挥发分：二1煤挥发分为15.68%，属低挥发分煤。梁北二1煤层煤质特征表续表1-2-1 产品名称及序号检验项目计量单位检验结果备注名称符号原煤矸石煤生产煤样灰成分SiO2%43.0659.38Al2O3%32.3221.82TiO2%1.050.68Fe2O3%6.827.28CaO%8.004.36MgO%0.490.66SO3%6.030.41P2O5%0.400.18K2O%0.673.76Na2O%0.180.46微量元素F%5/Cl%0.029/P%0.026/As10-64/Ga10-68/Ge10-61/U10-62/Pb10-614/Cr10-68/腐植酸HA%0.13/透光率Pm%100/（4）硫分：二1煤全硫含量（Std）为0.60%，属低硫分煤。其中无机硫（Spd）为0.28%，有机硫（Sod）为0.32%。洗精煤含硫将会低于0.5%，属特低硫精煤。（5）磷分：二1煤含磷（Pd）为0.026%，属特低磷煤。（6）发热量：二1煤高位发热量（Qgrvd）为30.26MJ/kg，按经验公式计算其应用基低位发热量（Qnetar）约为27MJ/kg。属高发热量煤。（7）粘结指数：二1煤粘结指数（G）为41，属中粘结煤。（8）煤灰熔融性：二1煤的煤灰软化温度（ST）大于1400，属高熔灰煤。综上所述，入洗二1煤属低中灰，低水、低挥发分、低硫特低硫、特低磷、高热值、高熔灰、中粘结性瘦煤。经过洗选加工后，将是优质的炼焦配煤和高炉喷吹用煤。1.3 煤质资料综合与可选性分析1.3.1 煤质资料的来源与代表性本设计所用煤质资料为河南省新龙矿业有限责任公司2002年3月委托河南省煤炭质量监督检验站所做梁北生产煤样筛分浮沉实验报告。该资料对本设计具有可靠性和代表性。1.3.2 煤质资料综合梁北生产煤样筛分浮沉实验报告所提供的原煤筛分组成见表1-3-1，破碎后50-0mm级筛分组成见表1-3-2；-0.5mm自然级筛分组成见表1-3-3；50-0mm自然级+破碎级粒度组成见表1-3-4。由梁北生产煤样筛分浮沉实验报告所得50-0.5mm自然级密度组成综合结果见表1-3-5；50-0.5mm破碎级密度组成综合结果见表1-3-6；50-0.5mm自然级+破碎级密度组成综合结果见表1-3-7；50-0.5mm自然级+破碎级浮沉组成见表1-3-8；-0.5mm自然浮沉结果见表1-3-9，-0.5mm破碎级浮沉结果见表1-3-10；-0.5mm自然级+破碎级浮沉组成试验结果见表1-3-11。-0.5mm级浮选试验结果见表1-3-12。1.3.3 煤的可选性分析（1）粒度分析根据表1-3-1可知：原煤中+50mm级含量仅占1.97%，灰分高达41.02%；50-0.5mm级产率占65.53%，为主导粒级。而其中13-0.5mm级产率为58.03% 。设计在选择分选设备时，必须充分考虑到梁北煤的这一特殊性。-0.5mm级高达32.50%，说明煤的碎化非常严重，-0.5mm煤泥的分选亦是本选煤厂设计要考虑的重点。+50mm级灰分陡然增加，说明矸石的混入以较大块为主。煤中灰分随粒度下降而降低，说明矸石泥化不明显。由表1-3-3可知：原煤-0.5mm级中+0.125mm级含量为45.24% ，粗煤泥含量相对较多。-0.5mm各粒级灰分分布比较平均，各粒级均在12.5%左右，仅0.045mm级稍高。（2）密度分析及可选性分析由表1-3-8可知：梁北二1煤的主导密度级为1.30-1.40、1.40-1.50两级，含量分别为56.60%、21.48%。-1.30、1.30-1.40、1.40-1.50三个密度级含量累计为80.35%，累计灰分仅为8.83%。+2.0密度级含量为 6.53%，灰分为75.33%，数量不多，易于排除。其余密度级含量较少，对整个分选过程影响不大。由表1-3-8还可知：当理论分选密度为1.6时，理论精煤灰分为9.97%，产率为86.72%，0.1级含量为9.49%，属极易选煤。当理论分选密度p1.6时，梁北50-0.5mm级原煤均为极易选煤；当理论分选密度p1.5时，梁北煤为较难选至极难选煤。梁北50-0.5mm级原煤可选性曲线见图1-3-1。再由表1-3-9可知，-0.5mm煤泥的主导密度级与50-0.5mm级相同，-1.30、130-1.40、1.40-1.50三级占了 81.97%，其累计灰分仅为6.68%。其可选性也与50-0.5mm级相近。（3） 煤泥的可浮性分析由表1-3-12可知：当浮选精煤干基灰分为11.0%时，浮选精煤回收率在90%以上，其可浮性等级为极易浮，随浮选精煤灰分的降低，可浮性难度增大。二1煤筛分试验报告表1-3-1粒级mm产物名称筛分前煤样质量（kg）7088.4产 率煤质检验结果质量kg占全样%筛上累计%水分Mad%灰分Ad%全硫St,d%发热量Qgr,v,dMJ/kg100手选煤18.6570.2660.4214.760.5529.04夹矸煤19.8000.2820.3334.150.3517.42矸石12.7000.1810.5678.860.035.12硫铁矿0.8530.0120.1246.7426.31小计52.0100.7410.7410.4238.320.77100-50手选煤50.0050.7120.4218.640.5927.30夹矸煤9.6750.1380.4651.010.512.02矸石25.8000.3670.5685.540.163.68硫铁矿0.8750.0120.0457.8437.36小计86.3551.2291.9700.4642.650.8250合计138.3651.9701.9700.4441.020.8050-25煤222.303.1665.1360.4428.122.3524.2425-13煤304.204.3329.4680.4818.331.9628.6013-6煤333.194.74514.2130.4320.041.7427.746-3煤1071.815.25929.4730.3515.370.6729.783-0.5煤2670.3238.02967.5020.4613.720.4330.690.5-0煤2282.0032.4981000.4712.910.3230.9450-06883.4998.0300.4414.680.62毛煤总计7021.861000.4415.200.63原煤总计6981.6499.4270.4414.820.62破碎级筛分试验报告表1-3-2类 别破碎级筛分前质量（kg）70.35粒 级（mm）产 率 煤质检验结果质量（kg）占本级（%）占全样（%）筛上累计（%）水分Mad(%)灰分Ad(%)50-2534.75049.6320.9780.9780.3850.4125-1311.70016.7110.3291.3070.4243.4613-67.54010.7690.2121.5190.5039.026-36.3809.1120.1801.6990.4830.693-0.56.4759.2480.1821.8810.4621.640.5-03.1704.5280.0891.9700.4618.40合计 70.0151001.970自然级-0.5mm筛分试验报告表1-3-3类 别自然级筛分前质量（kg）200.00粒 级（mm）产 率 煤质检验结果质量（kg）占本级（%）占全样（%）筛上累计（%）水分Mad(%)灰分Ad(%)0.500-0.25061.6531.03310.08510.0850.6412.480.250-0.12528.2314.2104.61814.7040.6412.240.125-0.07549.3824.8578.07822.7820.6012.310.075-0.04525.4612.8164.16526.9470.6212.850.04533.9417.0845.55232.4990.6313.75合计198.6610032.49950-0mm自然级+破碎级粒度组成综合表表1-3-4粒度（mm）自 然 级破 碎 级综 合 级校 正 级r本 % r全 %Ad %r本 % r全 %Ad %r本 % r全 %Ad %r本 % r全 %Ad %50-25 3.233.16628.12049.630.9850.414.144.1433.384.144.1433.3625-134.424.33218.33016.710.3343.464.664.6620.104.664.6620.0813-64.844.74520.04010.770.2139.024.964.9620.854.964.9620.836-315.5715.25915.3709.110.1830.6915.4415.4415.5515.4415.4415.523-0.538.7938.02913.7209.250.1821.6438.2138.2113.7638.2138.2113.73-0.533.1532.49812.9104.530.0618.4032.5932.5912.9332.5932.5912.90合级100.0098.0314.68100.001.9742.12100.00100.0015.22100.00100.0015.2050-0.5mm自然级密度组成综合表表1-3-5密度级50-25mm级25-13mm级13-6mm级6-3mm级3-0.5mm级综合级校正综合级r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%-1.301.030.032.923.140.123.064.430.213.321.550.232.262.290.853.322.261.433.122.261.433.121.30-1.4042.521.248.0253.392.017.5252.132.437.5156.698.486.6560.7122.456.6857.8536.616.8257.7236.526.821.40-1.5018.660.5514.9120.150.7614.5020.320.9515.0923.363.4914.4221.818.0614.7821.8213.8114.7021.7713.7814.701.50-1.604.970.1520.725.460.2122.845.810.2723.456.490.9724.306.572.4325.016.364.0224.476.344.0124.471.60-1.704.170.1226.862.790.1029.082.420.1129.933.020.4532.753.101.1533.983.061.9432.743.051.9332.741.70-1.803.380.1034.161.460.0535.672.010.0936.381.550.2339.671.430.5342.241.591.0139.951.591.0139.951.80-2.003.900.1140.882.090.0844.561.750.0845.991.620.2449.911.330.4950.651.591.0148.511.591.0148.51+2.0021.380.6377.0311.530.4373.7211.140.5271.945.710.8572.672.761.0273.765.463.4573.805.673.5973.80小 计（去煤泥）100.012.9327.59100.013.7619.04100.014.6618.7699.9914.9615.31100.0036.9713.36100.0063.2815.22100.0063.2815.35小计（带煤泥）92.452.9327.5986.973.7619.0498.124.6618.7698.0514.9615.3197.2236.9713.3696.5615.2296.5663.2815.35浮沉煤泥7.550.2412.8313.130.5712.961.880.0918.911.950.3016.922.781.0618.473.442.2521.323.442.2521.32 合 计100.003.1726.47100.004.3318.24100.004.7518.77100.0015.2615.35100.0038.0313.51100.0065.5315.43100.0065.5315.5650-0.5mm破碎级密度组成综合表表1-3-6密度级50-25mm级25-13mm级13-6mm级6-3mm级3-0.5mm级综合级校正综合级r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%r本%r全%Ad%-1.300.910.012.701.570.012.822.760.012.712.760.002.239.840.022.422.250.042.552.190.042.551.30-1.406.510.067.8021.990.078.1528.190.067.7440.150.076.9648.410.086.7218.820.357.4318.370.347.431.40-1.5011.000.1114.779.600.0314.9814.600.0315.2115.220.0315.0712.870.0215.4311.740.2214.9711.460.2114.971.50-1.606.950.0720.2111.170.0418.787.130.0121.365.830.0122.295.150.0123.697.430.1420.347.250.1320.341.60-1.706.350.0626.124.980.0226.304.590.0126.644.100.0127.443.220.0129.285.400.1026.475.270.1026.471.70-1.807.660.0731.714.280.0131.113.120.1132.012.700.0032.693.080.0134.585.650.1031.845.510.1031.841.80-2.0019.140.1937.2810.690.0337.465.270.0137.604.100.0138.102.440.0040.1213.080.2437.3913.080.2437.39+2.0041.480.4084.5835.810.1283.8734.340.0782.0025.150.0479.4414.990.0378.6435.620.6683.5936.860.6883.59小计（去煤泥）100.000.9749.87100.090.3342.01100.000.2138.36100.010.1830.00100.000.1721.47100.001.8642.26100.001.8543.47小计（带煤泥）99.062.9349.8798.870.3342.0198.730.2138.3698.930.1830.0095.520.1721.4798.631.8642.6298.631.8543.61浮沉煤泥0.940.0115.731.130.0011.821.270.0012.231.070.0015.454.480.0125.691.370.0317.941.370.0317.94 合 计100.000.9849.55100.000.3341.67100.000.2138.03100.000.1829.84100.000.1821.66100.001.8842.29100.001.8843.2650-0.5mm自然级+破碎级粒度组成综合表表1-3-7粒度（mm）50-0.5mm自然级50-0.5mm破碎级综 合 级校 正 综 合 级r本 % r全 %Ad %r本 % r全 %Ad %r本 % r全 %Ad %r本 % r全 %Ad %-1.302.261.433.122.250.042.552.261.473.102.261.473.101.30-1.4052.7236.526.8218.820.357.4356.6136.876.8356.6036.876.831.40-1.5021.7713.7814.7011.740.2214.9721.4913.9914.7021.4813.9914.701.50-1.606.344.0124.477.430.1420.346.374.1524.336.374.1524.331.60-1.703.051.9332.745.400.1026.473.122.0332.433.122.0332.431.70-1.801.591.0139.955.650.1031.841.701.1139.191.701.1139.191.80-2.001.591.0148.5113.080.2437.391.921.2546.361.921.2546.36+2.005.673.5973.8035.620.6683.596.534.2575.336.534.2675.33小计（去煤泥）100.0063.2815.35100.001.8642.62100.0065.1316.13100.0065.1316.14小计（带煤泥）96.5663.2815.3598.631.8642.6296.6265.1316.1396.6265.1316.14浮沉煤泥3.442.2521.321.370.0317.943.382.2821.283.382.2821.28合 计100.0065.5315.56100.001.8842.29100.0067.4116.31100.0067.4116.3150-0.5mm自然级+破碎级浮沉组成表表1-3-8密度级综合级校正浮物累计沉物累计r本 %r全 %Aad %r本 %Ad %r本 %Ad %-1.302.261.473.102.263.10100.0016.141.30-1.4056.6036.876.8358.866.6897.7416.441.40-1.5021.4813.9914.7080.358.8341.1429.661.50-1.606.374.1524.3386.729.9719.6546.021.60-1.703.122.0332.4389.8410.7513.2856.421.70-1.801.701.1139.1991.5411.2810.1663.791.80-2.001.921.2546.3693.4712.008.4668.75+2.006.534.2675.33100.0016.146.5375.33小计（去煤泥）100.0065.1316.14小计（带煤泥）96.6365.1316.14浮沉煤泥3.382.2821.28合 计100.0067.4116.31自然级-0.5mm浮沉试验报告表1-3-9浮沉试验编号Z0.50试验日期2002年01月煤样粒级（mm）0.50类 别自然级本级占全样产率（%）32.498灰分Ad(%)12.91试验前煤样质量（g）100密度级(kg/L)产 率灰分Ad(%)累 计质量（kg）占本级（%）占全样（%）浮 物沉 物产率（%）灰分Ad(%)产率（%）灰分Ad(%)1.302.1442.160.703.522.163.5210012.911.30-1.4052.74953.0417.244.5055.194.4697.8413.121.40-1.5026.62826.778.7011.2681.976.6844.8123.331.50-1.607.9798.022.6124.5289.998.2718.0341.231.60-1.702.9342.950.9635.7892.949.1410.0154.631.70-1.801.3671.370.4544.2094.319.667.0662.501.80-2.001.9171.930.6354.9296.2410.565.6966.932.003.7383.761.2273.0910012.913.7673.09合 计99.45610032.5012.91破碎级-0.5mm浮沉试验报告表1-3-10浮沉试验编号P0.50试验日期2002年01月煤样粒级（mm）0.50类 别自然级本级占全样产率（%）0.089灰分Ad(%)18.40试验前煤样质量（g）100.000密度级(kg/L)产 率灰分Ad(%)累 计质量（kg）占本级（%）占全样（%）浮 物沉 物产率（%）灰分Ad(%)产率（%）灰分Ad(%)1.3010.64010.860.0102.8710.862.8710018.091.30-1.4048