Method for smelting vanadium-rich pig iron from vanadium-containing steel slag

A technology of steel slag and pig iron, applied in the application field of metallurgical slag, to achieve the effects of low production cost, significant environmental benefits and important social benefits

Inactive Publication Date: 2014-01-01
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the patent is only the V in the vanadium slag 2 o 5 Vanadium-rich slag obtained by enrichment

Method used

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Examples

Experimental program
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Effect test

example 1

[0035] Composition of vanadium-containing steel slag: CaO: 42.6%, SiO 2 : 12.1%, Tfe: 21.6%, MgO: 10.2%, V 2 o 5 : 3.6%, P: 0.84%, MnO: 1.4%, Al 2 o 3 : 1.7%, TiO 2 : 0.41% etc. Add vanadium-containing steel slag, iron powder, silica, carbon powder and aluminum particles into the submerged arc furnace at a ratio of 65:16:10:5:4, heat to 1650°C, and continue heating treatment for 60 minutes, and then according to the density of slag and iron. The slag and iron are separated, and the pig iron is cooled in the air to obtain vanadium-rich pig iron. Take the vanadium-rich pig iron sample for analysis, the content of vanadium in it is 3.7%, the V in the slag 2 o 5 The degree of reduction is 85%. Take iron slag samples after smelting for analysis, V 2 o 5content of 0.63% and TFe content of 1.16%, this smelting method removes most of the V in vanadium-containing steel slag 2 o 5 And FeO reduction, so as to obtain vanadium-rich pig iron.

example 2

[0037] Composition of vanadium-containing steel slag: CaO: 43%, SiO 2 : 13.1%, Tfe: 22%, MgO: 11.1%, V 2 o 5 : 3.8%, P: 0.75%, MnO: 1.2%, Al 2 o 3 : 1.5%, TiO 2 : 0.52% etc. Put vanadium-containing steel slag, iron powder, silica, carbon powder and aluminum particles into the submerged arc furnace at a ratio of 63:16:10:6:5, heat to 1640°C, and continue heating treatment for 60 minutes, and then according to the density of slag iron The slag and iron are separated, and the pig iron is cooled in the air to obtain vanadium-rich pig iron. Take the vanadium-rich pig iron sample for analysis, the content of vanadium in it is 3.8%, the V in the slag 2 o 5 The degree of reduction is 86%. Take iron slag samples after smelting for analysis, V 2 o 5 content of 0.64%, TFe content of 1.01%, this smelting method will most of the V in the vanadium-containing steel slag 2 o 5 And FeO reduction, so as to obtain vanadium-rich pig iron.

example 3

[0039] Composition of vanadium-containing steel slag: CaO: 41%, SiO 2 : 12.1%, Tfe: 21%, MgO: 10.5%, V 2 o 5 : 3.9%, P: 0.78%, MnO: 1.1%, Al 2 o 3 : 1.4%, TiO 2 : 0.51% etc. Put vanadium-containing steel slag, iron powder, silica, carbon powder and aluminum particles into the submerged arc furnace at a ratio of 65:16:9:5:4, heat to 1640°C, and continue heating treatment for 60 minutes, and then according to the density of slag iron The slag and iron are separated, and the pig iron is cooled in the air to obtain vanadium-rich pig iron. Take the vanadium-rich pig iron sample for analysis, the content of vanadium in it is 4.0%, the V in the slag 2 o 5 The degree of reduction is 89%. Take iron slag samples after smelting for analysis, V 2 o 5 content of 0.61%, TFe content of 0.95%, this smelting method will most of the V 2 o 5 And FeO reduction, so as to obtain vanadium-rich pig iron.

[0040] In summary, the method for smelting vanadium-rich pig iron with vanadium-co...

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Abstract

The invention discloses a method for smelting vanadium-rich pig iron from vanadium-containing steel slag, which comprises the following steps: adding 63-67 parts of vanadium-containing steel slag, 14-18 parts of iron powder, 8-12 parts of silica, 4-6 parts of carbon powder and 3-4 parts of aluminum shot into a smelting furnace, and heating to melt the mixture; and after the reaction is finished, separating furnace slag from molten iron, and cooling the molten iron to obtain the vanadium-rich pig iron, wherein the vanadium-containing steel slag is slag left after smelting vanadium-containing molten iron in a converter. The method can enrich 85% of vanadium in the vanadium-containing steel slag into pig iron to obtain the vanadium-rich pig iron, well utilizes the steel slag, has the advantages of simple production technique, strong operability and low production cost, and is convenient for development in industrial production.

Description

technical field [0001] The invention relates to the application of metallurgical slag, in particular to a method for smelting vanadium-rich pig iron with vanadium-containing steel slag. Background technique [0002] 98% of the world's known vanadium reserves are derived from vanadium-titanium magnetite. In China, the Panxi region, Anhui Ma'anshan and Hebei Chengde are mainly using vanadium-titanium magnetite for smelting. [0003] At present, the smelting and extraction process of vanadium-titanium magnetite is: blast furnace smelting - vanadium-containing hot metal extraction of vanadium - wet treatment of vanadium slag to produce V 2 o 5 —Roasting furnace to process vanadium slag to produce vanadium, and the semi-steel after extracting vanadium from vanadium-containing molten iron still contains relatively high residual vanadium, and the V in the converter slag after smelting in the converter 2 o 5 The content is only 2-4%, while the amount of converter steel slag is ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B11/00C21B11/10
Inventor 陈路戈文荪陈永曾建华梁新腾
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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