Title:
INJECTION METHOD FOR IMPROVING HIGH-TITANIUM SLAG PROPERTY OF VANADIUM-TITANOMAGNETITE SMELTING
Document Type and Number:
WIPO Patent Application WO/2024/066378
Kind Code:
A1
Abstract:
The present invention relates to an injection method for improving a high-titanium slag property of vanadium-titanomagnetite smelting, comprising: adding ascharite and pulverized coal injection coal into a blast furnace pulverized coal injection coal pulverization system for pulverization, fully and uniformly mixing same, and then allowing uniformly mixed powder to enter a blast furnace pulverized coal injection system and to be injected into a blast furnace by means of a tuyere of the blast furnace so as to participate in a slagging reaction. The present invention mainly injects ascharite powder and the blast furnace pulverized coal injection coal simultaneously into the blast furnace; B2O3 in the ascharite is used as an acidic anion in slag, and has a greater capability to bind to calcium ions than TiO2
-3ions, so that the B2O3 component in the ascharite can reduce the amount of produced high-melting-point perovskite, and the reduction of the amount of the produced perovskite can further cause a reduction in the viscosity and the melting temperature of high-titanium blast furnace slag, thereby improving the smelting property of the high-titanium slag; in addition, the ascharite has a high content of MgO, and the increase of the content of MgO also helps to improve the property of the slag.
Inventors:
FU WEIGUO (CN)
ZHENG KUI (CN)
XIE HONGEN (CN)
HU PENG (CN)
ZHENG KUI (CN)
XIE HONGEN (CN)
HU PENG (CN)
Application Number:
PCT/CN2023/093814
Publication Date:
April 04, 2024
Filing Date:
May 12, 2023
Export Citation:
Assignee:
PANGANG GROUP PANZHIHUA IRON & STEEL RES INSTITUTE CO LTD (CN)
International Classes:
C21B5/04; C21B5/00
Foreign References:
| CN115418424A | 2022-12-02 | |||
| CN103276126A | 2013-09-04 | |||
| CN101033496A | 2007-09-12 | |||
| CN101608248A | 2009-12-23 | |||
| CN102071283A | 2011-05-25 | |||
| CN102864258A | 2013-01-09 | |||
| CN104060007A | 2014-09-24 | |||
| CN1228478A | 1999-09-15 | |||
| JP2002317216A | 2002-10-31 |
Other References:
ZHANG, YUZHU ET AL.: "Theory And Practice of Iron Ore Powder Agglomeration", METALLURGICAL INDUSTRY PRESS, 31 January 2012 (2012-01-31), pages 2
WANG, WENZHONG; YU KUN; XU JINDUO: "AN INVESTIGATION ON THE METALLURGICAL PROPERTIES OF B 2 O 3 -BEARING BLAST FURNACE SLAGS", GANGTIE - IRON AND STEEL, YENIN GONGYE CHUBANSHE, BEIJING, CN, vol. 15, no. 04, 31 July 1980 (1980-07-31), CN , pages 53 - 58, XP009553816, ISSN: 0449-749X, DOI: 10.13228/j.boyuan.issn0449-749x.1980.04.012
WANG, WENZHONG; YU KUN; XU JINDUO: "AN INVESTIGATION ON THE METALLURGICAL PROPERTIES OF B 2 O 3 -BEARING BLAST FURNACE SLAGS", GANGTIE - IRON AND STEEL, YENIN GONGYE CHUBANSHE, BEIJING, CN, vol. 15, no. 04, 31 July 1980 (1980-07-31), CN , pages 53 - 58, XP009553816, ISSN: 0449-749X, DOI: 10.13228/j.boyuan.issn0449-749x.1980.04.012
Attorney, Agent or Firm:
LIAN & LIEN IP ATTORNEYS (CN)
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