煤粉主要参数.doc

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1、1矿石在回转窑内进行预还原，可减少电炉的电力负荷。回转窑内镍、铁、钴的还原程度见表2-15。表2-15回转窑内镍、铁、钴的还原程度表Nioi/总Ni,目标20%Feo/总Fe,目标1.3%Fe2+/总Fe,目标40%或更高Fe3+/总Fe,目标0%Coo/总Co,合计目标6%烟煤的成分和发热值固定C/%挥发份/%灰份/%水分/%发热值/kcal·kg-150.0025.0016.009.005671无烟煤的成分和发热值固定C/%挥发份/%灰份/%水分/%发热值/kcal·kg-165.006.5023.505.005661煤粉消耗参数单位操作值干燥窑(作业率75

2、%)t/h3.18回转窑(作业率82.2%)t/h10.71煤粉制备(作业率75%)t/h0.43煤粉消耗总计t/h14.32煤粉年额定消耗量在水分为1%时估算为t，其中干燥窑消耗20860t，回转窑焙烧消耗77153t,煤粉制备消耗块煤：3127t/a。用于燃料的块煤总量为t/a（湿基）。本项目采用无烟煤作还原剂，还原剂无烟煤的消耗量为54854t/a（湿基）。外部运输量表序货物名称单位数量交接点运输方式说明运入1红土矿t/a临时堆场汽车运输外委2烟煤t/a煤库汽车运输外委3柴油t/a5588柴油间汽车运输外委4耐火材料t/a2162耐火材料库汽车运输外委5电

3、极糊t/a3703电极糊库汽车运输外委6电极壳t/a370综合维修车间汽车运输外委7黄土t/a200熔炼车间汽车运输外委8氧枪个6000综合仓库汽车运输外委9探棒个800综合仓库汽车运输外委10脱硫剂t/a2800精炼车间汽车运输外委11保温剂t/a240综合仓库汽车运输外委12石灰t/a2507.6脱硫车间汽车运输外委小计t/a运出1镍合金产品t/a77420厂外汽车运输外委2电炉渣t/a厂外汽车运输外委3干燥煤灰t/a1815厂外汽车运输外委4石膏渣t/a7259.2厂外汽车运输外委5精炼渣t/a4500厂外汽车运输外委小计t/a.2合计t/a.2干燥物料平

4、衡表名称数值数值含水率温度成分WT%(干基t/h)(湿基t/h)湿基(℃)NiFeCaOCr2O3SiO2MgOAl2O3PSLOIOC其他加入湿矿量:55.1583.5634%251.8014.002.00.539.5021.092.500.0080.02011.006.49101.091煤粉1.591%25合计55.15产出干矿量:51.31214.3520%801.78013.7912.0070.50239.64821.1692.5090.0080.03311.0756.3950.9980.084烟尘量：3.311702.0716.801.900.4737

5、.5220.032.370.0080.01910.007.760.301.04损失0.532.0716.801.900.4737.5220.032.370.0080.01910.007.760.301.04合计55.15干燥窑热平衡表名称数值比例名称数值比例*1000kcal/h*1000kJ/h*1000kcal/h*1000kJ/h热收入热支出1.入窑物料显热1462.246112.167.641.水蒸发消耗热10019.2341880.3852.332.煤粉燃烧显热9794.3140940.2251.162.出窑物料显热897.913753.264.693

6、.兑冷空气显热5232186.142.733.窑体散热损失1317.035505.186.884.焙烧烟气显热7366.5130792.0138.484.出窑烟气显热6911.8928891.7036.10合计19146.0680030.53100.00合计47451.45.70100.00焙烧物料平衡名称数量数量数量含水率温度.成分WT%(干基t/h)(湿基t/h)Nm3/h湿基(℃)NiFeCaOCr2O3SiO2MgOAl2O3PSLOIOC其他加入干矿37.7447.1720.0%25.001.78013.7912.0070.50239.64821.16

7、92.5090.0080.03311.0756.3950.9980.084烟尘粒料22.5730.0925.0%25.002.0015.481.990.5039.3621.022.490.0080.0258.5127.180.6691.45煤粉5.361.00%25.00还原煤3.815.00%25.00空气25.00合计60.31产出焙砂47.88850.001.8914.712.240.5343.6822.393.500.0080.090.504.514.411.52烟尘9.66300.002.1617.501.960.4938.7620.692.450.0

8、080.026.508.