高碳铬铁中铬、硅、磷的含量联合测定

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COMBINEDDETERMINATIONOFCHROMIUM. SILICONANDPHOSPHORUSINHIGHCARBON FERROCHROME

Liu Caiping Xi Chongzhao Qin Long （Guangxi Shenglong Metallurgical Co.，Ltd.Fangchenggang ，China）

Abstract：Analysis ofthekeyof highcarbon iron chromium isthedissolutionofsample processing，highcarboniron chromium，chromium mainlychromium carbide，itspropertyis stable，withacid isdificult tocompletelydecompose， generallyadopt the way of sodium peroxide alkali melting，but also affcted bythequalityofsodium peroxide，sodium peroxide poor，sample melting is notthorough，cause the test result is low，therefore put forward secondary melting sampleprocesing method.Through theexperiment，themethodof secondary melting issummarized under theactual situation，and two high carbon ferrochromium standard substances are determined bythis method.The measurement results show thatthe method hasgood accuracyand precision，which mets the requirements ofdaily analysis in he laboratory of iron and steel enterprises.

KeyWords：high carbon ferrochrome;alkali meltinganalysis;combined determinatior

0前言

高碳铬铁的铬含量有 50% 以上，其碳含量一般有 5%～10% 。（剩余3578字）