The feasibility of paigeite ore treatment with iron nugget making process is proved. The isothermal reduc- tion experiments at laboratory scale were carried out, using carbon bearing pellets which were made of boron contai- ning iron concentrate and pulverized coal mainly, from 1 623 to 1 723 K with different heating time. The results indi- cated that iron nugget making process depends mainly on heating time and temperature. And the iron nugget and slag can separate in a clean manner at 1 673 K for 15 min. For the iron nugget, the C content is 3.57% （mass percent） and B is 0. 065~ （mass percent）. The B203 content of slag is 20.01~/00, and the boron was concentrated into one phase which is identified as suanite （Mg2BaOs） during the solidification. With an extraction ratio of 80~ under the atmospheric conditions, the activity of boron in slag is good. The boron-rich slag can be used to extract boric or boric acid and alleviate the shortage of boron resource. Through series of calculation and analysis related, it can be conclu- ded that the recovery ratio of Fe and boron are about 98% and 97% respectively. The results show that this method is feasible and effective on the utilization of paigeite ore.
参考文献
| [1] | LIU Ran;XUE Xisng-xin;JIANG Tao.Comprehensive Utilization of Ludwigite and its Prospect (in Chinese)[J].Multipurpose Utilization of Mineral Resources,2006(02):33. |
| [2] | l.Sulan .Pyrometallurgical Separation of Boron from Iron in Ludwigite Ore[J].ISIJ International,1998(10):1077-1079. |
| [3] | ZHU Jian-hua;WEI Xin-ming;MA Shu-fen et al.Advancesin Boron Resources and Their Processing (in Chinese)[J].Modern Chemi- cal Industry,2005,25(06):26. |
| [4] | ZHAO Qing-jie;He Chang-qing;WANG Chang-ren et al.New Process of Multipurpose Utilization of Ludwigite[J].Journal of Northeastern University(Natural Science),1996,17(06):588. |
| [5] | ZHANG Xian-peng;LANG Jian-feng;CUI Chuan-meng et al.Comprehensive Utilization of Low Grade Ludwigite Ore With Blast Furnace Smelting (in Chinese)[J].Iron & Steel,1995,30(12):9. |
| [6] | Heinrich Wilhelm GUDENAU;Dieter SENK;Shaowen WANG;Karla DE MELO MARTINS;Christoph STEPHANY .Research in the Reduction of Iron Ore Agglomerates Including Coal and C-containing Dust[J].ISIJ International,2005(4):603-608. |
| [7] | K. Satoh;T. Noguchi;M. Hino .Reduction and Carburization of Iron Oxide by Carbonaceous Materials[J].Steel Research International,2010(10):834-840. |
| [8] | Sawa Y.;Takeda K.;Itaya H.;Yamamoto T. .New coal-based process to produce high quality DRI for the EAF[J].ISIJ International,2001(S.s):S17-S21. |
| [9] | Ko-ichiro OHNO;Takayuki MAEDA;Koki NISHIOKA .Effect of Carbon Structure Crystallinity on Initial Stage of Iron Carburization[J].ISIJ International,2010(1):53-58. |
| [10] | Matsumura T;Takenaka Y;Shimizu M et al.The Reduc- tion and Melting Behavior of Carbon Composite Iron Ore Pel- let on High Temperature (in Japanese)[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1998,84(06):405. |
| [11] | Michishita H;Tanaka H .Prospects for Coal Based Direct Re- duction Process[J].Kobelco Technology Review,2010,29:69. |
| [12] | Kikuchi S;Ito S;Kobayashi I et al.ITrnk3 Process[J].Kobelco Technology Review,2010,29:77. |
| [13] | Turkdogan E T.Physical Chemistry of High Temperature Technology[M].New York:Academic Press New York,1980 |
| [14] | YANG Zhong-dong,LIU Su-lan,LI Zhe-fu,XUE Xiang-xin.Oxidation of Silicon and Boron in Boron Containing Molten Iron[J].钢铁研究学报（英文版）,2007(06):32-36. |
| [15] | PEIXIN ZHANG;ZHITONG SUI .Effect of Factors on the Extraction of Boron from Slags[J].Metallurgical Transactions.B.Process Metallurgy,1995(2):345-351. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%