共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
在脱磷理论分析基础上,采用低枪位冶炼和低终点氧出钢,增大出钢口直径和降低终点温度,并优化底吹工艺降低碳氧积,取得了较好的脱磷效果。生产应用结果表明:采用增大出钢口和优化底吹工艺后,300t转炉出钢时间缩短至5.1 min,缩短了1.9 min;IF钢终点温度降低至1 670.6℃,降低了17.4℃;碳氧积降低至13.3,降低了8.9;终点氧降低至422.5×10-6。在铁水磷升高0.010%,枪位降低30 cm,终点氧降低153.3×10-6的条件下,工艺优化后的平均终点磷含量为0.012 4%,能够满足转炉冶炼IF钢对脱磷效果的要求。 相似文献
6.
为了提高高炉喷煤比、降低焦比,攀铜l群高炉进行了喷吹煤粉助燃剂的试验研究。结果表明添加煤粉助燃剂后高炉取得了较好的技术经济指标;随着助燃剂用量的增加,燃料比降低的幅度增大;高炉喷吹添加使用助燃剂后,焦炭负荷增加,焦比降低,炉顶煤气温度降低,煤气利用率提高。添加助燃剂后焦比降低了9.3kg/t,煤比降低了0.9kg/t,综合焦比降低了10.1kg/t。 相似文献
7.
在钢铁工业中,炼钢是中间工序,处于承前启后的地位。因此炼钢节能不仅是降低炼钢工序能耗,即直接节能,还更多地关系到整个钢铁工业能耗的降低。比如多用废钢、降低钢铁料消耗、降低铁钢比、节约原材料从而降低造渣料、铁合金等消耗、提高 相似文献
8.
降低槽电压是当前铝电解行业实现节能生产的主要途径.通过对某企业240kA系列电解槽电压平衡进行分析,指出槽电压下降的潜力主要在于电解质压降的降低;而降低电解质压降的主要途径是降低极距及提高分子比.经过一年的生产实践,该系列平均电压降低至3.915V,2011年每吨铝直流电耗相比2010年降低了170kW·h,节电效果明显. 相似文献
9.
10.
阐述了唐山建龙利用传统中宽带生产线进行低碳钢铁素体轧制的过程,并对产品进行力学性能、金相和组织结构分析.结果表明,铁素体轧制组织为铁素体+少量珠光体+三次渗碳体,相对于奥氏体轧制,铁素体轧制屈服强度降低28%,抗拉降低13%,延伸率降低23%,冷轧屈服降低23%,抗拉降低12%,延伸率增加2%,n值增加7%,冷轧轧制力平均减小一半,r值降低25%,并对r值降低的原因进行了分析.经过客户多次实际应用,铁素体轧制实际应用效果良好. 相似文献
11.
“十三五”期间,为实现我国铅锌硫化矿的高效选别、选矿过程的节能降耗、废水废渣的循环利用,我国选矿工作者进行了大量研究工作,并取得了较大的进展。本文通过梳理“十三五”期间我国铅锌硫化矿选矿新技术进展,系统地论述了铅锌硫化矿的高效选别技术、清洁选矿技术和节能降耗技术等。相关新技术的应用,解决了我国铅锌矿产资源主金属回收率与伴生资源综合利用率低、选矿成本与设备能耗高、选矿废水治理与回用困难等问题,全面提高了我国铅锌硫化矿资源的开发利用水平,具有良好的应用推广价值。 相似文献
12.
13.
介绍了九十年代世界铝工业的概况,着重叙述了以法国彼涅“AP-30”为代表的300kA槽的电解工艺,该技术被认为是世界上最先进的,其技术指标,平均电流效率达94.9%,能耗约为13000kwh/t左右,投资和成本均有明显下降。 相似文献
14.
《Baosteel Technical Research》2010,(Z1):128
This paper shall show an economic feasible approach to implement greenhouse gas(GHG) reduction measures into steel companies. The goal to improve energy consumption is directly linked to the reduction of GHG emissions and therefore directly in correlation with the economic viability. A baseline scenario of the considered reference system and of the respective reference year has to be defined, mapped and analysed. In a second step an analysis of the same operation using available and prospected best available technology (BAT) processes is carried out to generate a basis for a benchmark system. The identified reduction potentials are reported and the GHG emission reductions are put into relation to the investment cost of the new process technologies/process adaption to be implemented.This economic feasibility calculation is necessary to realise a cost efficient GHG reduction roadmap implementation into the company’s business operations. The GHG reduction roadmap is developed using the abatement curve concept to get an indication of " low hanging fruits" and for establishing a sequence for implementing carbon emission reductions measures. The scope of that approach can be extended by including further important environmental parameters like NOx, SO2,CO,dust,heavy metal emissions in air as well as production residues.That gives in the end a broader picture and more starting points to improve the overall environmental performance of steel producing companies beyond the GHG emissions and energy consumption. 相似文献
15.
16.
轧板厂通过对3号加热炉水冷梁的改造,提高了加热炉的使用率,减少了耐材用量和检修费用,达到了节能降耗的目的,降低了生产成本。 相似文献
17.
钢铁企业能耗水平及节能效果与经济效益的关系,可以通过建立能耗总费用、能耗费用成本率和单位能源费用三个指标来评价。12年来,鞍钢公司的能耗总费用增加了5.2倍;能耗费用成本率在27%与37%之间变化,1996年已达到35.53%,且有继续上升的趋势。降低能耗总费用是降低产品成本,提高企业经济效益的重要工作,一是要降低综合能耗,二是要注意能源结构。 相似文献
18.
介绍了电热法生产铸造用铝硅合金的工艺流程,同时对兑掺法和电热法生产铸造用铝硅合金的能耗进行了分析,结果表明:电热法生产共晶铝硅合金与兑掺法相比可节能5%以上,成本可降低700元以上。 相似文献
19.
R. Zmeureanu 《Canadian Metallurgical Quarterly》2000,6(3):87-90
In a cold climate such as of Montreal, the air infiltration through the exterior envelope of a house has a significant impact on the heating energy consumption and cost. The renovation of existing houses for increasing the airtightness up to the level of new, well-built houses can lead to the reduction of heating energy cost. This paper estimates the cost-effectiveness of this type of renovation by considering (1) the life-cycle energy consumption; (2) the initial cost of renovation; and (3) the CO2 tax credits, which take into account the environmental impact of increasing the airtightness of existing houses. The results show that the increase of airtightness of existing houses is not always cost-effective in the Montreal area. 相似文献