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Vanadium-silicon alloy, and preparation and application thereof

A technology of silicon alloy and vanadium slag, applied in vanadium silicon alloy and its preparation and application fields, can solve problems such as unseen reports, achieve high research value, shorten process flow, and reduce metal loss.

Inactive Publication Date: 2009-01-28
PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the vanadium-silicon (SiV) alloying process technology has not been reported in the alloy production industry and in the steel production industry as a substitute for ferrovanadium and ferrosilicon for the alloying of vanadium-containing and silicon-containing steels

Method used

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  • Vanadium-silicon alloy, and preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, the converter containing V 2 o 5 The 14.48% primary vanadium slag is finely ground and magnetically separated to remove iron through a grinding magnetic separator to obtain V-containing slag. 2 o 5 15%, TFe30%, SiO 2 Refined vanadium slag of 14.78%, MnO7.24%, MFe8.7% and other impurities (above are weight percent). Next, mix the refined vanadium slag, coke (with a particle size of 3mm-10mm, fixed carbon (C) content of 84%) and silica with a silicon content of 98% in a mass ratio of 7:7:6. , and the prepared material is sent to the mixer to mix evenly, and then smelted and reduced through a 3200kVA semi-closed submerged thermal electric furnace. While smelting and reducing, a total of 8% lime and 3% Fluorite, so that while ensuring the basicity of the slag, the slag has a certain fluidity, which promotes the reaction and smooth out of the furnace; after the charge is melted, add 0.08% of the total charge to the furnace and the particle size is 3mm-10mm coke, ...

Embodiment 2

[0025] First, the converter containing V 2 o 5 The 15.8% primary vanadium slag is finely ground and magnetically separated to remove iron through a grinding magnetic separator to obtain V-containing slag. 2 o 5 16.2%, TFe29.7%, SiO 2Refined vanadium slag of 14.8%, MnO7.56%, MFe9.1% and other impurities (the above are weight percentages). Next, mix the refined vanadium slag, coke (with a particle size of 3mm-10mm, fixed carbon (C) content of 84%) and silica with a silicon content of 96.63% in a mass ratio of 12:8:5. , and the prepared material is sent to the mixer to mix evenly, and then smelted and reduced through a 3200kVA semi-closed submerged thermal electric furnace. While smelting and reducing, a total of 5% lime and 4% Fluorite: After the furnace charge is melted, add 0.05% of the total charge and coke with a particle size of 3mm-7mm to the furnace, control the reduction time at 170min, and control the end point temperature at 1630°C, and obtain vanadium-silicon allo...

Embodiment 3

[0028] First of all, after extracting vanadium in the converter to obtain V-containing 2 o 5 The primary vanadium slag of 19.42% is crushed and magnetically separated by a grinding magnetic separator to obtain V-containing slag. 2 o 5 20%, TFe22%, MnO6.58% and other impurity refined vanadium slag. Next, mix the refined vanadium slag with the above-mentioned composition and content, pulverized coal coke (with a particle size of 1mm-3mm, fixed C content of 82%) and mountain sand with a silicon content of 92% in a mass ratio of 2:1:1 , send the prepared material into the mixer to mix evenly, and then pass through a 3200kVA semi-closed submerged thermal electric furnace for smelting and reduction. While smelting and reducing, add 10% lime and 5% fluorite as auxiliary materials. Material: After the charge is melted, add 0.1% of the total amount of coal powder with a particle size of 1mm-3mm to the furnace, control the reduction time at 150min, and release the furnace at the end ...

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Abstract

The invention provides a V-Si alloy, a preparation method and an application method thereof. The preparation method of the V-Si alloy comprises the following steps: rough vanadium slag is smashed and magnetic separated to obtain fine vanadium slag containing 15 to 20 percent of V2O5 and 22 to 30 percent of TFe, and the fine vanadium slag and silicon material and a reducing agent are used as the materials and evenly dosed according to a certain proportion, and then mixed pellets are obtained; the obtained pellets and a slag modifier agent are reduced by melting in an ore-smelting electric furnace for 150 to 180 min, with the final temperature of 1630 to 1680 DEG C, and finally the V-Si alloy with 8 to 15 percent of vanadium and 30 to 50 percent of vanadium silicon is obtained. By using the V-Si alloy of the invention as the alloying material for the smelting alloy steel containing vanadium and silicon, the technological process is shortened, and the production cost and the energy consumption are reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, and more specifically relates to a vanadium-silicon alloy and a preparation and application method thereof. Background technique [0002] Vanadium (V)-containing silicon (Si) alloy steel has a wide range of applications due to its good compressive properties and telescopic properties. It is mainly used in various fields such as heavy rail steel, transportation pipeline steel, and automobile girder plates. . In the prior art, there are two types of vanadium-based alloys: iron-based series and non-ferrous-based series. Alloys include vanadium-silicon-calcium, vanadium-manganese-ferro, vanadium-iron nitride, vanadium-titanium-silicon, etc. The vanadium-containing alloys of non-ferrous series mainly include vanadium-aluminum alloy, vanadium-nitrogen, vanadium-carbon alloy, etc. At present, two iron-based alloys, ferrovanadium and ferrosilicon, are mainly used as alloying materials for vanadium-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C35/00C22B1/24C22C1/02
Inventor 何为王建戈文荪李安林
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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