Title:
PREPARATION METHOD FOR FERROVANADIUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2021/175306
Kind Code:
A1
Abstract:
Disclosed is a preparation method for a ferrovanadium alloy, relating to the technical field of metallurgy. The method comprises the following steps: a, with a vanadium-containing material as a raw material, dividing a smelting process into N stages, separately preparing mixtures according to each stage, putting the mixtures from the 1st to (N-1)th stages into a furnace for smelting in two batches, discharging slag after the (N-1)th stage of smelting is finished, and adding the mixture from the Nth-stage into the furnace in one process for smelting and pre-reducing, wherein an aluminum preparation coefficient of the first batch of mixture in the 1st-(N-1)th stages is 1.0-1.1, an aluminum preparation coefficient of the second batch of mixture in the 1st-(N-1)th stages is 1.0-1.4, an aluminum preparation coefficient of the mixture in the Nth stage is 0.2-1.0, and a comprehensive aluminum preparation coefficient of the total furnace charge is 1.00-1.08; and b, after reduction is finished, overturning molten slag and metal into a refining furnace for refining; and after refining is finished, dismantling the furnace after the furnace body is naturally cooled, and then separating the slag and the metal to obtain the alloy. The method is beneficial for improving thermodynamic conditions during a smelting process, and can also greatly reduce the vanadium loss in the slag.
Inventors:
YU BIN (CN)
JING HAN (CN)
CHEN HAIJUN (CN)
SHI QIHUA (CN)
ZHANG LIN (CN)
LIANG BIN (CN)
JING HAN (CN)
CHEN HAIJUN (CN)
SHI QIHUA (CN)
ZHANG LIN (CN)
LIANG BIN (CN)
Application Number:
PCT/CN2021/079216
Publication Date:
September 10, 2021
Filing Date:
March 05, 2021
Export Citation:
Assignee:
PANGANG GROUP PANZHIHUA IRON & STEEL RES INSTITUTE CO LTD (CN)
International Classes:
C22C35/00; C22B4/06
Foreign References:
| CN111254344A | 2020-06-09 | |||
| CN105018828A | 2015-11-04 | |||
| CN102206754A | 2011-10-05 | |||
| CN107964599A | 2018-04-27 | |||
| CN110747359A | 2020-02-04 | |||
| RU2202646C1 | 2003-04-20 | |||
| SU1235968A1 | 1986-06-07 |
Attorney, Agent or Firm:
CHENGDU HONGQIAO PATENT LAW OFFICE (CN)
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