共查询到20条相似文献,搜索用时 152 毫秒
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为了实现多金属地下矿山生产计划编制的动态性和科学有效性,以开采过程中技术经济要求和空间序列关系为约束条件,以利润最大化为目标构建多金属地下矿山生产计划动态优化模型.模型将采准、切割、爆破、回采和充填过程抽象为基本作业单元并加以模型化处理,将地下开采的均衡性要求和接续性问题转化为空间约束条件,以开采状态作为决策变量,构建生产计划优化的0-1整数规划模型,并给出基于人工蜂群模型的求解算法.以西藏某铜钼矿的生产计划动态编制为应用案例,优化解算出矿山未来3年的生产计划,并给出矿床开采时序的三维可视化展示.优化结果表明,通过开采区域的动态调整,在有效保证生产连续性的同时,提升了矿山开采的经济效益. 相似文献
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介绍了天津钢管集团股份有限公司ERP系统中生产计划模块的管体长度计算的基础数据内容及相互之间的关系.论述了ERP生产计划中的执行过程,管体生产长度的优化计算方法及该计算方法在ERP系统中实现的关键技术和解决方案. 相似文献
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利用工单在生产过程中相同或相似特性组批生产,优化批次生产顺序以减少生产过程中品种及规格的切换,可以提高生产效率和产品质量稳定性。针对冷轧带钢产品生产过程,研究冷轧精整并行机调度优化方法,建立了多目标优化数学模型,设计了多目标迭代贪心算法(multi-objective interated greedy algorithm, MOIGA),通过实际案例对模型和算法进行了验证。试验结果表明模型和算法有效,多目标优化算法求得的Pareto解集优于采用目标加权方式求得的Pareto解集,便于决策者决策。 相似文献
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提出了一种将遗传算法用于热送热装生产计划优化的方法.与MTSP方法不同,该方法在优化时不需预先确定轧制单位的数目,它充分利用了轧制单位的结构特点,在对轧制计划优化的同时,优化了轧制单位的数目.仿真结果表明,该方法可在大量的生产合同中很快找出满足各种生产约束条件的热送热装生产计划的可行解,以提高热送热装率. 相似文献
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论文提出研究钢铁生产结构优化问题的工艺结构分析法,用该方法研究了工艺结构参数(废钢比、连铸比、电炉钢比等)对企业吨钢综合能耗的影响。 相似文献
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Grate kiln is the major production process of oxidized pellets in China, its pellet output accounts for more than 60% of the total. However, some state parameters cannot be detected directly due to the continuous, closed, and high temperature characteristics of the production process, which brings difficulties to the process optimization. A soft measurement model for pellet temperature was established via dynamic modeling methods based on the principles of mass and heat equilibrium. And a thermal parameters optimization model, combined with the exergy balance analysis method, was proposed to optimize the operation parameters with the goal of minimizing the system wide exergy loss. The optimization results of practical cases show that the optimized thermal parameters are conducive to reducing the total exergy loss and fuel consumption and bring significant energy saving effects. A software system of thermal parameters optimization is developed via C#, which can show the energy distribution status in real time, estimate the energy consumption level, and provide operational guidance. This system has been applied in a domestic pellet plant and has played an important role in optimization guidance. 相似文献
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摘要:链箅机-回转窑是中国氧化球团生产的主要工艺,其产量约占球团总产量的60%以上,但由于其连续、封闭、高温的特点,生产过程部分参数无法实时检测,给工艺优化带来困难。因此,应用动态建模的方法,建立了基于物热平衡原理的球团温度软测量模型,再结合平衡分析方法构建了热工参数优化模型,以系统总损失最小为目标进行了参数优化。结果表明:采用优化后的热工参数,系统总损失和燃料消耗量降低,节能效果显著。通过C#语言开发了链箅机-回转窑热工参数优化软件,可实时呈现系统能量分布状态,评价能耗指标,指导生产操作。所开发的软件系统在国内某球团厂获得了应用,取得良好效果。 相似文献
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现代钢铁生产流程进入新世纪后正加快优化的进程.紧凑、高效和智能化是主要发展方向;新流程发展和现有流程的改造相结合,是流程变革的主要特点;与多学科新技术的结合,将成为发展的主要特征;符合社会可持续发展的要求是钢铁流程优化最重要的目标. 相似文献
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LI Jia-dong LI Yong ZHAO Da-dong FU Tian-liang WANG Zhao-dong WANG Guo-dong 《钢铁研究学报(英文版)》2012,19(12):1-7
To ensure plate heating quality and reduce energy consumption in heat-treatment process, optimal heating for plates in a roller hearth furnace was investigated and a new strategy for heating procedure optimization was developed. During solving process, plate temperature forecast model based on heat transfer mechanics was established to calculate plate temperature with the assumed heating procedure. In addition, multi-objective feature of optimal heating was analyzed. And the method, which is composed of asynchronous particle swarm optimization and grey relational analysis, was adopted for solving the multi-objective problem. The developed strategy for optimizing heating has been applied to the mass production. The result indicates that the absolute plate discharging temperature deviation between measured value and target value does not exceed ± 8 ℃, and the relative deviation is less than ± 0. 77%. 相似文献