Preparation method of ferro-vanadium alloy

A vanadium ferroalloy and alloy technology, which is applied in the field of preparation of vanadium ferroalloy, can solve the problems of reducing vanadium content, reducing vanadium loss in slag and unit aluminum loss, and thermodynamic conditions need to be improved, so as to reduce vanadium loss and improve reaction power. The effect of learning conditions

Active Publication Date: 2021-03-19
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ZL201510496769.1 proposes a metal aluminum as reducing agent, with V 2 o 3 and V 2 o 5 Mixed vanadium oxides as raw materials, a multi-phase aluminothermic reduction ferrovanadium preparation method with a large electric furnace with slag and iron functions as the main equipment, under the premise that the comprehensive aluminum distribution coefficient is ≤ 1.05, the gradient is adopted according to the smelting period The smelting operation with decreasing aluminum ratio can greatly reduce the vanadium content in slag in the early stage of smelting, and realize the reduction of vanadium loss in slag and unit aluminum consumption, but the thermodynamic conditions of this method need to be improved

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

preparation example Construction

[0029] Concrete, a kind of preparation method of ferrovanadium alloy, comprises the following steps:

[0030] aUsing vanadium-containing materials as raw materials, the smelting process is divided into N phases, and the mixture is prepared according to each phase, and the 1~N-1 phase mixture is divided into two batches for smelting, and the N-1 phase smelting is completed. After the slag is discharged, the N-phase mixture is added to the furnace at one time for smelting pre-reduction;

[0031] Among them, the aluminum distribution coefficient of the first batch of mixtures from 1 to N-1 is 1.0 to 1.1, the aluminum distribution coefficient of the second batch of mixtures from 1 to N-1 is 1.0 to 1.4, and the aluminum distribution coefficient of the N phase mixture is The coefficient is 0.2 to 1.0, and the comprehensive aluminum distribution coefficient of the total charge is 1.00 to 1.08;

[0032] b. After the reduction, the molten slag gold is poured into the refining furnace ...

Embodiment 1

[0047] Smelting conditions: smelting raw material is V 2 o 5 , V 2 o 3 And vanadium-containing dedusting ash (vanadium mass fraction 36.2%), the weight ratio is 2:6:2. It is smelted in 3 phases. The aluminum ratio of the first batch of mixture in the first and second phases is 1.0, the aluminum ratio of the second batch of the first and second phases is 1.05, and the aluminum ratio of the third phase of the mixture is 1.0. Single furnace The comprehensive aluminum distribution coefficient is 1.02. The weight ratio of the vanadium-containing materials in the first phase to the second phase (in terms of vanadium content) is 1:1, and the weight ratio of the total vanadium-containing materials in the first and second phases to the vanadium-containing materials in the third phase (in terms of vanadium content) is 20:2. The pre-reduction time of the third phase of smelting is 1min / ton of alloy, and then the molten slag gold is dumped into the refining furnace for refining opera...

Embodiment 2

[0050] Smelting conditions: smelting raw material is V 2 o 5 , V 2 o 3 And vanadium-containing dedusting ash (vanadium mass fraction 36.3%) and vanadium-containing fine powder (vanadium mass fraction 50.5%), the weight ratio is 2:6:1:1. It is smelted in 3 phases, the aluminum ratio of the first batch of mixture in the first and second phases is 1.0, the aluminum ratio of the second batch of the first and second phases is 1.1, and the aluminum ratio of the third phase of the mixture is 0.4, single furnace The comprehensive aluminum distribution coefficient is 1.05. The weight ratio of the vanadium-containing materials in the first phase to the second phase (in terms of vanadium content) is 1:1, and the weight ratio of the total vanadium-containing materials in the first and second phases to the vanadium-containing materials in the third phase (in terms of vanadium content) is 20:3. The pre-reduction time of the third phase of smelting is 1min / ton of alloy, and then the mol...

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 discloses a method for preparing a vanadium-iron alloy, which belongs to the technical field of metallurgy and comprises the following steps: a. Using vanadium-containing materials as raw materials, the smelting process is divided into N phases, and mixed materials are respectively configured according to each phase, and 1-N- Phase 1 mixture is put into the furnace for smelting in two batches. After the slag is discharged at the end of N-1 phase smelting, the N-phase mixture is added to the furnace at one time for smelting pre-reduction; among them, the 1-N-1 phase The aluminum distribution coefficient of a batch of mixtures is 1.0-1.1, the aluminum distribution coefficient of the second batch of mixtures from 1 to N-1 is 1.0-1.4, and the aluminum distribution coefficient of the N-phase mixture is 0.2-1.0. The comprehensive aluminum matching coefficient is 1.00-1.08; b. After the reduction, the molten slag gold is poured into the refining furnace for refining; The method of the invention not only helps to improve the thermodynamic conditions of the smelting process, but also greatly reduces the loss of vanadium in the slag.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a preparation method of vanadium-iron alloy. Background technique [0002] Vanadium-iron alloys are widely used in vanadium-containing micro-alloyed steels. It has a dual strengthening mechanism of fine-grain strengthening and precipitation strengthening, thereby reducing overheating sensitivity and improving the strength and wear resistance of steel. Widely used in construction, aerospace, road and bridge industries. The production of ferro-vanadium alloy mainly includes thermal reduction methods such as silicothermal reduction method, aluminothermic reduction method and carbothermal reduction method. Due to the strong reduction activity of aluminum and the high calorific value of the reduction process, aluminothermic reduction is the most widely used. At present, ferro-vanadium production enterprises mainly smelt vanadium-containing raw materials with V 2 o 5...

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): C22C35/00C22B4/06
CPCC22C35/00C22B4/06
Inventor 余彬景涵陈海军师启华
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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