转炉炼钢成本控制优化.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,炼钢成本控制优化,1,炼钢成本主要三部分：可变成本、固定成本和综合回收利用可变成本,是指随产量的变化升降的项目，包括：钢铁料消耗、合金料、辅料、动力等Key Point,钢铁料,原辅料,合金,脱氧剂,能源,燃料动力,一、炼钢降本构成,2,一、炼钢降本构成,（,1,）,铁水,(,自产,),（,2,）镍铁,（,3,）,铁块（自产）,（,5,）,废钢,（,6,）次坯,（,7,）渣盆,（,8,）,自循环,（,1,）石灰石,（,2,）外购石灰,（,3,）,自产石灰,（,4,）萤石,（,5,）轻烧镁球,（,6,）颗粒增碳剂,（,7,）白云石,(8),金属球,(9),烧结矿,(10),耐火材料其它,（,1,）,氧气,（,2,）氮气,（,3,）压缩空气,（,4,）,电,（,5,）水,（,6,）煤气,（,7,）氩气,（,8,）霞普气,（,1,）硅铁,（,2,）,硅锰,（,3,）,高锰,（,4,）铬铁,（,5,）,铝铁,（,6,）,硅铝钙钡,（,7,）电石,（,8,）其它,钢铁料,原辅料,合金,脱氧剂,能源,燃料动力,3,二、降低钢铁料消耗,钢铁料消耗,，每吨合格钢消耗的钢铁料量，主要包括铁水、铁块、废钢等。

钢铁料消耗是炼钢企业生产的一项重要综合性技术经济指标，也是,炼钢成本构成的主体,，占总炼钢成本的,75%,左右，在一定程度上反映了炼钢企业的技术操作和生产组织水平，也直接体现了企业的现代化程度和科学管理水平4,二、降低钢铁料消耗,公司考核,折算钢铁料消耗公式：当月实际钢铁料,+,（当月全铁,-,口径全铁）*,10+,（当月自循环,-,口径自循环）*,59%+,（当月烧结矿,-,口径烧结矿）*,33%+,（当月金属球,-,口径金属球）*,40%,；其中铁水,TFe 94.412%,，自循环,16Kg/t,、烧结矿及金属球各,27.5Kg/t,钢种,理论消耗,Q235B,1.0480,Q235A,1.0450,A36Cr,1.0520,Q235C,1.0520,Q235BM,1.0560,Q195,1.056,Q215B,1.052,Q345B,1.045,Q390B2,1.048,Q420B,1.045,CCSA,1.056,A36,1.044,Q345B(B),1.044,510L,1.059,考核标准：,一档,:1.5,，二档,:0.5,，,三档,:0,，四档,:-0.5,5,申请调理论值完成情况：,板材,1,月,2,月,3,月,4,月,5,月,6,月,7,月,8,月,9,月,10,月,11,月,12,月,累计,Q235B,1.0480,334310,317348,298802,244320,294470,311490,280522,283667,283029,239543,287908,315594,3491004,Q215B,1.052,12778,7436,18279,13853,11024,5507,6198,8339,5774,12055,11216,357,112817,Q345B,1.045,62012,91181,92905,93795,100209,82980,87723,65886,100882,68022,74612,89753,1009961,Q420B,1.045,295,209,222,60,1017,266,0,0,266,0,1204,622,4161,CCSA,1.056,29475,30497,48278,28597,29400,29842,6536,21156,12227,21841,20195,6262,284306,AB/A2,1.057,0,0,0,0,908,0,1099,1357,0,2103,175,1110,6753,A36,1.044,42795,33415,47120,46692,81691,46917,51936,74941,40014,85503,65970,46820,663813,Q345B(B),1.044,0,0,1419,0,0,2563,373,0,0,1519,3148,0,9021,SS400B,1.048,77017,47480,65603,61675,40602,87749,72151,107456,26853,63318,80259,63994,794156,SS400Crl,1.050,1357,1036,2881,2195,2624,326,0,1701,1871,0,191,6484,20666,SAE1017B3,1.050,2987,0,0,2592,6195,0,1033,9614,7001,4557,4259,5428,43665,09CuPCrNi-A,1.031,0,1410,0,0,1895,0,0,0,0,0,0,0,3305,SPA-H,1.040,17375,14873,24750,23907,22652,22784,31906,22094,17233,28552,37080,56705,319911,产量合计,673975,610751,686975,638815,700998,706440,686315,721759,650173,613764,664592,686450,8041007,理论钢铁料消耗,1050.65,1049.23,1050.25,1049.80,1050.52,1050.22,1049.74,1050.33,1050.22,1049.11,1048.97,1049.40,1049.89,当月全铁,94.31,94.33,94.50,94.42,94.49,94.51,94.50,94.46,94.33,94.41,94.22,94.24,94.39,实际钢铁料消耗,1051.95,1049.85,1049.95,1049.77,1049.71,1049.66,1049.91,1050.44,1051.64,1049.78,1049.78,1049.94,1050.20,自循环,16.89,15.37,15.77,17.49,15.14,14.51,16.33,17.51,19.73,21.92,20.92,18.76,17.55,烧结矿,25.81,27.56,26.97,26.80,30.97,34.73,33.81,33.62,41.33,26.57,27.68,26.79,30.29,金属球,27.18,28.37,29.37,29.89,23.90,20.04,21.75,23.02,13.17,28.36,27.25,28.09,24.96,折算实际钢铁料消耗,1050.78,1049.07,1051.24,1051.43,1049.66,1049.13,1050.77,1052.06,1051.82,1053.25,1050.74,1049.84,1050.83,折算实际钢铁料消耗与理论差,0.13,-0.16,0.99,1.63,-0.85,-1.10,1.03,1.73,1.60,4.14,1.78,0.44,0.94,6,二、降低钢铁料消耗,指标,2014,年平均,2015,年目标,措施,折算钢铁料消耗与理论消耗差值,1.7kg/t,（调整后,0.94,）,1.5kg/t,1,、稳定装入制度，,130+7,（,1,）吨；把握好,入炉金属料结构，继续烧结矿攻关，保证烧结矿（球团）消耗在,55kg/t,左右。

普碳钢生白控制在,25kg/t,以内，低碳钢生白控制在,30kg/,以内，,2,、,合理控制炉型，尤其是出钢口位置厚度，保证钢水出净3,、,规范枪位、氧压、过程加料时机、终点压枪等操作，控制喷溅4,、,终点控制，普碳钢终点,C,控制在,0.0850.135%,，出钢温度在,16251645,，保证终渣流动性良好，钢,-,渣分离充分5,、提高矿回收率，常规操作下，终点前,3min,不允许加矿；双渣炉次前期带,2t,左右烧结矿起渣、尽可能不带球团矿普碳钢必须将出钢,C-T,提起来，创造矿还原条件,6,、保证钢水质量的前提下，严控大包注余7,、,人员管理，严格执行工艺纪律，违规责任人落实考核与检讨,8,、加强渣道管理，保证自循环回收力度，避免含铁物料外运7,二、降低钢铁料消耗,针对,Q235B,等普碳钢种随机抽取,26,个炉次不同终点,C,、终点温度的终渣进行研究，分析认为转炉在保证终渣流动性较好的前提下，拉碳,C 0.085-0.135%,、,T 1625-1645,时终渣含铁料总和较低，有利于提高钢水收得率，降低钢铁料消耗炉渣空冷研磨后，部分炉次有包裹钢珠出现，利用磁铁吸取含铁物料后，通过对比称重估算炉渣含铁物料,如何优化终点控制？,从终点渣入手？,8,转炉终点优化,炉号,毛重,g,去铁重,g,表观含铁率,%,Tfe%,碱度,R,拉碳,%,温度,总铁,(%),3812160,89.54,78.64,12.17,13.49,3.03,0.137,1616,25.66,3812162,77.57,66.18,14.68,16.53,3.27,0.083,1628,31.21,3613662,69.69,65.3,6.30,16.73,3.8,0.106,1635,23.03,3712482,75.97,68.95,9.24,11.97,2.24,0.129,1638,21.21,3513395,105.28,98.29,6.64,13.47,2.85,0.1248,1637,20.11,3613844,63.27,53.72,15.09,14.95,3.44,0.1083,1611,30.04,3712632,76.26,72.53,4.89,13.77,2.78,0.11,1631,18.66,3812347,88.01,70.06,20.40,10.43,2.62,0.10,1616,30.83,3513616,107.11,96.13,10.25,12.62,2.64,0.13,1634,22.87,3614019,105.71,102.64,2.90,13.39,3.19,0.102,1632,16.29,3712851,92.37,78.01,15.55,16.39,3.05,0.13,1649,31.94,3812534,89.98,74.92,16.74,18.91,2.72,0.043,1642,35.65,3812578,51.65,48.35,6.39,16.77,2.91,0.0951,1659,23.16,3712940,70.53,64.97,7.88,16.47,2.81,0.1118,1660,24.35,3614109,82.51,80.19,2.81,16.8,3.46,0.0999,1657,19.61,3712941,72.02,53.78,25.33,15.54,3.05,0.1645,1649,40.87,9,普碳钢终点,C,控制在,0.0850.135%,，出钢温度在,16251645,；有利于提高金属收得率。

转炉终点优化,10,三、原辅料消耗,转炉使用的辅料有活性石灰、白云石、镁球和球团矿转炉使用的造渣材料在炼钢成本中占有相当大的比例，特别是,石灰消耗,的高低对炼钢生产中的各项指标有重要的影响为降低石灰的消耗，转炉造渣操作上由,高碱度高,MgO,操作向低碱度低,MgO,操作的根本性转变；炉渣的碱度和,MgO,含量分别稳定在,2.8,、,8.2,；根据铁水,Si,及带渣量调整石灰消耗炉前加强管理，杜绝随意加料压渣的习惯原料方面：针对石灰石杂石较多情况，石灰石卸车时工长及料场接收工必须到现场监督,设备方面：根据设备影响情况调整工艺参数，避免石灰生过烧操作方面：看火工在异常操作下的应变能力。