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针对炬钢厂转炉除法水处理系统存在的问题,提出了从水质净化、水质稳定流程选择等方面进行研究的试验工作方案,本文叙述了水质净化的工业试验的过程及结果。试验结果表明,用聚丙烯酰胺作絮凝处理后沉淀池出水悬浮浓度≤100mg/L。基本满足循环水水质要求,为水质稳定的开展创造了条件。 相似文献
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根据国家新的《生活饮用水水质卫生规范》 ,现有的给水处理设备已不能满足新的水质标准要求。因此有必要对其进行进一步的研究、改进 ,使三类水质的源水经过设备处理后的出水浊度在 1NTU以下 ,余氯合格率提高 ,符合新的水质卫生规范。 相似文献
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新钢轧钢区水处理工艺中存在药剂投加劳动强度大,污泥处理复杂,水量不稳定及出水水质超标等问题,通过实地调查与分析,对存在的问题进行有针对性研究,并做出了相应的改进措施。 相似文献
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介绍了高速线材浊环水处理物理法与化学法的原理及特点,并针对该项目确定了采用综合两种处理方法并引入稀土磁盘分离净化技术的工艺流程,最终该项目投产后,浊环水出水水质为SS≤25 mg/L、Oil≤5 mg/L,达到了设计要求。 相似文献
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文章叙述了某钢厂焦化废水的水处理情况,针对其废水的水质特点,及焦化废水回用的水质要求,确认了以反渗透技术为主的水处理技术. 相似文献
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脱盐水站反渗透水处理技术通过应用西门子PLC自动控制,实现了脱盐水系统全自动产水功能,主要有自控画面编程、逻辑控制、高压泵自动控制等,保证了反渗透制水工艺出水水质稳定,产水率高. 相似文献
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分析了八钢热电厂除盐水处理工艺流程。为确保日常运行达到设计出水水量,结合反渗透特点进行了改造及调整了运行管理,其中包括原水水质分析、运行数据分析及工艺设备、设施的合理使用等。 相似文献
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对高炉煤气洗涤水水处理药荆的配方进行了试验,试验成功后投入了应用。通过一年的运行,结果证明新药荆能满足高炉煤气洗涤水处理要求,水质均可达到控制指标。 相似文献
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针对承钢半钢炼钢的特点,在现有条件下开发出硬线钢的生产工艺流程,并通过采取冶炼造双渣操作、无铝脱氧、使用低氮增碳剂、LF炉精炼、连铸保护浇注及电磁搅拌等措施进行工艺优化,提高了钢水可浇性,降低了钢中气体含量及夹杂物含量,提高了铸坯内部质量,使成品性能和质量达到了硬线钢的要求,满足了用户对产品的需要。 相似文献
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张辅琪 《冶金设备管理与维修》2013,(6):56-57,60
电缆屏蔽层接地是抑制干扰信号的重要手段,是维持系统稳定运行的重要措施。其抑制干扰的能力除与屏蔽层本身质量有关外,还与屏蔽层接地方法密切相关。良好的屏蔽需选择正确的屏蔽层接地方式、接地点数及接地位置。 相似文献
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傅红华 《有色金属材料与工程》2014,(4):150-153
阐述了圆盘剪的内部结构和剪切功能,分析了铜带材裁剪和分切过程中常见的质量缺陷,提出了改善措施.在实际加工过程中,通过对刀刃侧间隙和重叠量的调节,刀具和刀垫的合理选配及生产现场的品质控制与规范操作,主要缺陷可以得到有效克服,产品质量可控,质量水平能更好地满足用户需求,同时也可以提高工序成材率,获取更多的效益. 相似文献
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Christie Juliette; Smith G. Rush; Williamson Gail M.; Lance Charles E.; Shovali Tamar E.; Silva Luciana C. 《Canadian Metallurgical Quarterly》2009,54(2):173
Purpose: To demonstrate that assessing quality of informal care involves more than merely determining whether care recipient needs for assistance with activities of daily living (ADLs) are routinely satisfied. We investigated the extent to which potentially harmful behavior (PHB), adequate care, and exemplary care (EC) are empirically distinct dimensions of quality of care. Design: 237 care recipients completed the quality of care measures, and their caregivers completed psychosocial measures of their own depression, life events, cognitive status, and perceptions of pre-illness relationship quality. Results: Although PHB was moderately related to EC, adequate care was not associated with PHB and was only slightly related to EC. Psychosocial variables were not related to adequate care but were differentially associated with PHB and EC, providing additional evidence for the distinction between these measures of quality of care. Conclusions: ADL assistance can be adequate in the presence of PHB and/or the absence of EC. Declines in EC may signal increases in PHB, independent of adequacy of care. These findings produce a brief, portable, and more comprehensive instrument for assessing quality of informal care. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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The aim of the study was to compare the quality of life (QOL) and needs of people with schizophrenia in comprehensive treatment systems in two countries. One hundred people with schizophrenia and schizoaffective disorder were randomly selected from the caseload of a community mental health center in Boulder, Colorado, and 70 were similarly selected from public psychiatric treatment services in and around Bologna, Italy. Subjects were interviewed with QOL and needs assessment instruments and rated with the Brief Psychiatric Rating Scale. Objective QOL measures favored Bologna subjects over Boulder subjects, particularly with respect to employment, accommodation, and family life. In a factor analysis, objective QOL variables sorted separately from subjective satisfaction ratings, suggesting that they measure different underlying constructs. Patient needs in both Boulder and Bologna samples were primarily psychological and social rather than basic survival issues. Boulder subjects were more likely to report accommodation needs. Many apparent QOL advantages for Bologna subjects could be attributed to the greater frequency with which the Italian patients lived with family of origin. Living with family also appeared to confer practical benefits in meeting needs. Objective QOL measures discriminated between patient populations better than subjective ratings of satisfaction and well-being. 相似文献
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我国钢铁企业市场营销正处于关键时期,需要从体制、策略、方法等方面探求好的方法和管理措施,保证各项工作能过按照现代市场营销方案推进。我国钢铁企业市场营销的现状还处于初级阶段,各种营销方法还不成熟,很难适应当前钢铁行业国内、国际市场的竞争需要,钢铁行业需要建立一支高素质的营销团队,保证行业取得又好又快的发展,为我国经济发展做出更大的贡献。 相似文献
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介绍45钢硬线盘条的生产工艺流程,通过采取双渣冶炼技术脱磷、LF炉精炼深脱硫、连铸全保护浇注及电磁搅拌等措施降低钢中气体含量及夹杂物含量,提高钢水可浇性,改善铸坯内部质量,使产品质量达到了45钢硬线盘条要求并满足用户需要。 相似文献
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炼钢过程中钢水氮含量控制 总被引:1,自引:0,他引:1
为控制钢中氮含量,提高产品的内在质量,通过对炼钢转炉—LF—连铸工艺的生产实践和研究,探讨影响钢中氮含量的因素和控制措施。通过生产实践数据和研究得到,要满足钢水质量对降氮要求应采取如下措施:转炉底吹氮氩气体切换时间应控制在11 min左右,避免补吹操作,加强出钢口的维护并及时更换出钢口;LF精炼时避免钢液裸露,采用大渣量埋弧操作;连铸采用保护浇注等。 相似文献