四氧化三锰中锰的存在价态及浆状试样的分析方法.PDF

24 1 矿　冶　工　程 Vol.24 №1 200402 MINING AND M TALLURGICAL NGIN RING February 2004 余侃萍, 黄宝贵 (, 410012) 　:Mn O , Mn O 2MnO·MnO 。 Mn O Mn 3 4 3 4 2 3 4 。 , 、、。 :;; :O655.5 :A :0253-6099(2004)01-0058-03 Valence State of Manganese in Mangano-manganic Oxide and Analytical Method for Its Paste Sample YU Kan-ping, HUANG Bao-gui (Changsha Research Institute of Mining and Metallurgy , Changsha 410012, Hunan, China ) Abstract:By deter ining availableoxygen in pureMn O , its structural for ula is confir ed to be 2MnO·MnO .The deter- 3 4 2 inating ethods for deter inating the valance state ratio of Mn(Ⅱ)toMn(Ⅳ)in paste Mn3O4 in investigated.The produc- tion practice has indicated that the ethods have the advantages of si ple and fast operation and accurate date. Key words: angano- anganicoxide;available oxygen;valence state analysis 　　(Mn3O4 ), Mn(TMn), Mn3O4 Mn , , 。 , Mn(Ⅳ) Mn , 。 Cr(Ⅵ ), TMn 。 Mn O Mn , 、、。 3 4 [ 1～5] 。 , Mn 1　 Mn , Mn O 3 4 , Mn 1.1　 , 。 FeSO4 ·(NH4 )2SO4 ·6H2O (0.1 ol L 0.05 Mn3O4 Mn , ol L, (1+7)H2SO4 );K2Cr2O7 。 (c (1 6K2Cr2O7 )=0.1000 ol L 0.0500 ol L);MnO (H MnO , Mn);MnO ( Mn3O4 () 2 2