Vol.53 No.12 铸 造
Dec.2004 垒 FOUNDR丫 1035
乞进鳗竺
铸造工艺和型砂对环境的影响
胡建人，，何芝梅2
(1.杭州电子科技大学理学院，浙江杭州310018;2.浙江省机电设计研究院有限公司铸造研究所，浙江杭州 310009)
摘要:从厌氧燃烧、富氧燃烧、金属催化剂和飞灰触煤、温度等角度讨论铸造对二恶英循环和生成的影响，分析铸
造过程二恶英生成机理及防止措施，提出控制砂中含盐量，可减少生成二恶英的必要条件氯的参与，通过钝化铸造飞
灰的活性、控制型砂及旧砂中的残碳量、缩短铸造冷却过程在300-500℃温度段的逗留时间可大幅度减少二恶英重
新合成的数量。统计表明铸造过程微粒释放数量与型砂所含苯一碳量呈正相关。
关键词:持久性有机污染物;铸造;二恶英;吠喃;氯化物;有机氯化物;环境污染
中图分类号:TG242;X503.1;X506 文献标识码:A 文章编号:1001-4977(2004)12-1035-05
ResearchofFoundryTechniqueandSand,ItsWastesto
EnvironmentalEffect
HUJian-ren'，HEZhi-mei2
(1.SchoolofScience,HangzhouElectronUniversity,Hangzhou310018,Zhejiang,China;
2.ResearchInstituteofFoundry,ZhejiangResearchInstituteCompanyLimitedofMechanics
andElectricity,Hangzhou310009,Zhejiang,China)
Abstract:Thereismuchemissionofdioxins,furanandbenzopyrene,etc.，whiletheyareinhotcondi-
tionsornotburningenoughlikethatbenzeneringorcarbon.Itsmisfortune,therearelargenumbersof
multi-benzeneringmaterials,mucilageglue,undry.Itiscommentedthattheinfluenceto
producedioxinsandtheirrecycleswithmetalactivator,dustaccelerant,burningwithfullorlackoxide
infoundryprocess.Itisanalyzedhowdioxinsproducedinfoundryandwhichwaytopreventit.Itisthe
mostimportantthatchlorideisthekeyfactoraboutdioxins.Thesandsfromfreshwatercandecrease
saltorchlorideespeciallyathightemperature.Itislesscompoundsfordioxinsnewly,withshorttime
stayingat3000to5001C，tobecomeunactivatedstatetomotebyfoundry,controlremnantscarbonin
sandmold.Itispertinencetoamountsofmoteandremnantscarbonbystatistics.
Keywords:Persistentorganicpollutants(Pops);foundry;dioxins(PCDDs);PCDFs;chloride;
Organo-chloridepesticide;environment
