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Coolant for dephosphorizing and extracting vanadium of converter, production method thereof, and method for dephosphorizing and extracting vanadium of converter

A production method and coolant technology, applied in the manufacture of converters, etc., can solve problems such as complex steps, and achieve the effects of simple operation, high dephosphorization efficiency, and low-cost converter steelmaking

Inactive Publication Date: 2012-11-28
PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the existing process technology including converter fire method vanadium extraction and subsequent steelmaking process has the disadvantage of complex steps

Method used

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  • Coolant for dephosphorizing and extracting vanadium of converter, production method thereof, and method for dephosphorizing and extracting vanadium of converter
  • Coolant for dephosphorizing and extracting vanadium of converter, production method thereof, and method for dephosphorizing and extracting vanadium of converter
  • Coolant for dephosphorizing and extracting vanadium of converter, production method thereof, and method for dephosphorizing and extracting vanadium of converter

Examples

Experimental program
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Effect test

example 1

[0038] Vanadium is extracted in a 120-ton converter in a steel plant, and the molten iron charge is 140 tons. During the process of vanadium extraction in the converter, chilled pellets with the function of simultaneous dephosphorization and vanadium extraction are added for simultaneous dephosphorization and vanadium extraction in the converter. For this smelting furnace, the components of vanadium-containing molten iron and semi-steel at the end of blowing and the temperature are shown in Table 1. The remaining components of vanadium-containing molten iron and pig iron block semi-steel are Fe.

[0039] Table 1 Composition of vanadium-containing molten iron and semi-steel composition and temperature at the end of blowing

[0040]

[0041] The ratio of the cold solidified pellet finished product composition with simultaneous dephosphorization and vanadium extraction function is (mass percentage): Na 2 CO 3 : 42%; FeO: 25%; Fe 2 o 3 : 25%; SiO 2 : 4%; Al 2 o 3 : 4%. T...

example 2

[0044] Vanadium is extracted in a 120-ton converter in a steel plant, and its molten iron load is 145 tons. During the process of vanadium extraction in the converter, cold solidified pellets with the function of simultaneous dephosphorization and vanadium extraction are added for simultaneous dephosphorization and vanadium extraction in the converter. For this smelting furnace, the composition and temperature of the vanadium-containing molten iron and semi-steel at the end of blowing are shown in Table 2. The remaining components of the vanadium-containing molten iron and pig iron block semi-steel are Fe.

[0045] Table 2 Composition of vanadium-containing molten iron and semi-steel composition and temperature at the end of blowing

[0046]

[0047] The ratio of the cold solidified pellet finished product composition with simultaneous dephosphorization and vanadium extraction function is (mass percentage): Na 2 CO 3 : 45%; FeO: 20%; Fe 2 o 3 : 30%; SiO 2 : 2%; Al 2 o ...

example 3

[0050] Vanadium is extracted in a 120-ton converter in a steel plant, and its molten iron load is 135 tons. During the process of vanadium extraction in the converter, cold solidified pellets with the function of simultaneous dephosphorization and vanadium extraction are added for simultaneous dephosphorization and vanadium extraction in the converter. For this smelting furnace, the components of the vanadium-containing molten iron and the composition and temperature of the half-steel at the end of blowing are shown in Table 3. The remaining components of the vanadium-containing molten iron and pig iron block semi-steel are Fe.

[0051] Table 3 Composition of vanadium-containing molten iron and semi-steel composition and temperature at the end of blowing

[0052]

[0053] The ratio of the cold solidified pellet finished product composition with simultaneous dephosphorization and vanadium extraction function is (mass percentage): Na 2 CO 3 : 35%; FeO: 30%; Fe 2 o 3 : 25%;...

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Abstract

The invention discloses a coolant for dephosphorizing and extracting vanadium of a converter, a production method of the coolant, a method for dephosphorizing and extracting vanadium of the converter by using the coolant. The production method of the coolant for dephosphorizing and extracting vanadium of the converter comprises the following steps of: mixing sodium salt particles, oxidized iron sheet particles, bauxite fine powder and water, so that mixture can be formed; pressing the mixture into small balls by a ball press; and baking the small balls to remove moisture, so that a cold solid pellet final product can be obtained. The coolant, the production method of the coolant, and the method for dephosphorizing and extracting vanadium of the converter have the advantages that the dephosphorization and the vanadium extraction can be simultaneously realized when the vanadium is extracted in the converter; the operation is simple; the influences on the existing vanadium extracting technology and the quality of semisteel are small; the dephosphorizing efficiency is high, and the production efficiency of the vanadium extracting converter can be guaranteed. Furthermore, according to the invention, part of the dephosphorizing task of the steel converter can be forwarded to the vanadium extracting converter, so that the semisteel low-cost converter steelmaking can be realized, and the molten steel with eligible ingredients and temperature can be conveniently obtained.

Description

technical field [0001] The invention relates to the technical field of vanadium extraction in a converter, more specifically, to a coolant for dephosphorization and vanadium extraction in a converter, a production method thereof, and a method for dephosphorization and vanadium extraction in a converter using the coolant. Background technique [0002] Generally, converter blowing vanadium slag is a widely used method for extracting vanadium from molten iron. The molten iron at about 1400℃ is blown by oxygen or air in the converter to oxidize vanadium and other elements into slag. The semi-steel is used for steelmaking, and the vanadium slag is used for the extraction of vanadium by water method. [0003] In actual production, in addition to Fe, C, V, the main components of vanadium-containing molten iron include Ti, Cr, Si, Mn, P and other elements, which can be oxidized to form oxides in an oxidizing atmosphere, but at a certain temperature The affinity of each component to...

Claims

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Application Information

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IPC IPC(8): C21C5/28C21C5/36C21C7/064
Inventor 曾建华陈永梁新腾陈均李扬洲杨森祥王二军龚洪君杨晓东何为
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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