Method for directly smelting ferrovanadium nitride or ferrovanadium with high-temperature vanadium slag without chemical process

A ferrovanadium nitride and chemical process technology, applied in the field of vanadium metallurgy, can solve the problems of insufficient utilization of physical heat, low ferrovanadium grade, and inability to produce ferrovanadium nitride, and achieves no consumption of chemical raw materials, reduced investment, vanadium The effect of small loss

Active Publication Date: 2022-06-24
张计辉
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method further shortens the technological process, the grade of ferrovanadium is low, and the grade of vanadium is generally about 20%, and ferrovanadium nitride cannot be produced, and the physical heat of vanadium-vanadium slag is not fully utilized.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Vanadium-containing molten iron contains 0.45% V; 0.23% Si; 0.25% Mn; 0.18% Ti; 0.06% Cr. At the end of vanadium extraction in a 150-ton converter, carbon powder is sprayed to the bottom of the furnace. The amount of carbon powder added is 25% of the total iron mass in the vanadium slag, and the iron oxide in the slag is reduced to obtain V in the high-temperature vanadium slag. 2 o 5 content 22.52%, TFe content 9.67%, SiO 2 、TiO 2 Content 17.95%, MnO content 4.26%, the rest is Al2O 3 , MgO, CaO, etc.

[0029] (2) Add blue charcoal particles from the top of the vanadium extracting converter after the semi-steel has been removed for reduction, and the amount of blue charcoal particles added is 25% of the mass of vanadium slag.

[0030] (3) Pour the high-temperature vanadium slag into a 20-ton electric arc furnace through an insulating slag tank. By controlling the reduction temperature to 1600°C, the vanadium in the vanadium slag is deeply reduced, and at the sam...

Embodiment 2

[0034] (1) Vanadium-containing molten iron contains 0.42% V; 0.24% Si; 0.26% Mn; 0.18% Ti; 0.06% Cr. At the end of vanadium extraction in the 150-ton converter, natural gas is sprayed to the bottom of the furnace, and the natural gas flow rate is 300m 3 / min, reduce the iron oxide in the slag, and get V in the high-temperature vanadium slag 2 o 5 content 21.76%, TFe content 9.58%, SiO 2 、TiO 2 Content 17.93%, MnO content 5.42%, the rest is Al 2 o 3 , MgO, CaO, etc.

[0035] (2) Add blue charcoal particles from the top of the vanadium extracting converter to reduce after the semi-steel is produced, and the amount of blue charcoal particles added is 20% of the mass of vanadium slag.

[0036] (3) Pour the high-temperature vanadium slag into a 20-ton intermediate frequency furnace through the heat preservation slag tank. By controlling the reduction temperature to 1550°C, the vanadium in the vanadium slag is deeply reduced. The intermediate frequency furnace is covered and s...

Embodiment 3

[0040] (1) Vanadium-containing molten iron contains 0.45% V; 0.20% Si; 0.25% Mn; 0.18% Ti; 0.06% Cr. At the end of vanadium extraction in a 150-ton converter, coke oven gas is sprayed to the bottom of the furnace. The coke oven gas feed rate is 50m3 / min, and the iron oxide in the slag is reduced to obtain V in the high-temperature vanadium slag. 2 o 5 content 21.55%, TFe content 11.74%, SiO 2 , TiO2 content 19.32%, MnO content 4.46%, the rest is Al 2 o 3 , MgO, CaO, etc.

[0041] (2) Add coke particles from the top of the vanadium extracting converter for reduction after the semi-steel has been removed, and the amount of coke particles added is 15% of the mass of the vanadium slag total iron.

[0042](3) Pour the high-temperature vanadium slag into a 20-ton intermediate-frequency induction furnace. By controlling the reduction temperature to 1550°C, the vanadium in the vanadium slag is deeply reduced. The intermediate-frequency induction furnace is covered and sealed, and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for directly smelting ferrovanadium nitride or ferrovanadium with high-temperature vanadium slag without chemical process, which includes blowing vanadium-containing molten iron from the bottom or side of the furnace when it is close to the end point of vanadium extraction in the process of blowing vanadium in the converter Reductant, iron oxide in the reduction slag; after the semi-steel is produced, add the reducing agent from the top of the vanadium extraction furnace to continue reducing the iron oxide in the vanadium slag, and pour the high-temperature vanadium slag directly into the intermediate frequency induction furnace or electric arc furnace or through the heat preservation slag The tank is poured into the intermediate frequency induction furnace or electric arc furnace, and the vanadium and beneficial metal elements in the vanadium slag are deeply reduced by controlling the reduction temperature in the intermediate frequency induction furnace or electric arc furnace, and ferrovanadium nitride or ferrovanadium is obtained by controlling the amount of nitrogen blown at the bottom . The present invention uses high-temperature vanadium slag as raw material to directly produce ferrovanadium nitride, and can also produce ferrovanadium alloys of different grades, without the need for chemical land, and the production process is green and environmentally friendly, does not produce chemical waste water, and the energy consumption is significantly lower than that of traditional vanadium chemical processes. The process is short.

Description

technical field [0001] The invention relates to the technical field of vanadium metallurgy, in particular to a method for directly smelting ferrovanadium nitride or ferrovanadium with high-temperature vanadium slag without chemical process. Background technique [0002] The traditional preparation process of ferrovanadium nitride is that vanadium slag is used as raw material to enter the chemical plant, and ferrovanadium is produced through multiple complex chemical processes, and then ferrovanadium is used as raw material for solid-state nitriding. The energy consumption and cost of the production process are relatively high. . In order to shorten the process flow, some researchers directly use pure vanadium oxide produced by vanadium chemical plant as raw material, iron powder as iron source, carbon powder as reducing agent, and nitrogen gas to prepare ferrovanadium nitride. In this method, vanadium oxide is produced in a chemical process, which produces a large amount of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/00C22C35/00C22C33/04C21C7/06C22B7/04C22B34/22C22B5/10C22B5/12C22C1/10C22C1/02C22C27/02
CPCC22C33/006C22C35/00C22C33/04C21C7/0025C21C7/06C22B7/04C22B34/22C22B7/001C22B5/10C22B5/12C22C1/1036C22C27/025Y02P10/20
Inventor 张计辉
Owner 张计辉
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap