Original document(11 pages) Authorized document(10 pages) 中文版
    A process for preparing Cr2O3 by continuous thermodecomposition of chromic acid includes such steps as proportionally mixing chromic acid, coarse Cr2O3 as returning charge and additive chosen from boric acid (preferable), ammonium chloride, starch and saw dust; after uniformly mixing under a computer control, parallel-flow combustion of the said mixture and liquefied gas as fuel in an insulated rotary furnace, thermodecomposition reaction to generate Cr2O3, keeping the temp. for a certain time, cooling and pulverizing to obtain the product. The unpulverized material is used as the said returning charge.
Application Number
申请号		 02119561 Application Date
申请日		 2002.05.25
Title 名称 Method of producing dichromium trioxide using chromic acid thermal decomposition continuous method
Publication Number
公开号		 1459419 Publication Date
公开日		 2003.12.03
Approval Pub. Date Granted Pub. Date 2005.01.26
International Classification 分类号 C01G37/033
Applicant(s) Name
申请人		 Minyue County Chemical Plant
Address 地址 734500
Inventor(s) Name 发明人 Han Denglun, Zhang Zhongyuan
Attorney & Agent 代理人 zhang keqi

  
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