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Titanium slag furnace by-product smelting industrial pure iron and its method

A technology of industrial pure iron and by-products, applied in the field of iron and steel smelting, to achieve the effects of saving production costs, solving the utilization of high added value, and reducing the consumption of iron oxide scale

Active Publication Date: 2019-02-15
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is how to use molten iron as a by-product of smelting high-titanium slag to smelt industrial pure iron

Method used

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Examples

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Effect test

Embodiment 1

[0036] Embodiment 1 Smelting industrial pure iron with the technical scheme of the present invention

[0037] After the molten iron is discharged from the titanium slag furnace, the molten iron is mixed into the electric furnace. After the electric furnace heats up the molten iron to a temperature of 1520°C, the furnace door oxygen lance is used to blow oxygen to decarburize, phosphorus, silicon, and manganese. The oxygen flow rate of the oxygen lance is controlled at 0.05Nm 3 / (t min), after blowing oxygen for 40 minutes, the carbon of the molten iron is reduced to 0.016%, and the phosphorus is 0.003%. Vacuuming, the vacuum degree is controlled below 16Pa, and the oxygen activity in the molten iron is used to carry out deep decarburization treatment for 10 minutes; after the vacuum treatment, the molten iron is transported to the LF furnace, and the high-basic calcium aluminate refining slag is used for deep desulfurization , After the sulfur content of the molten iron drops ...

Embodiment 2

[0038] Embodiment 2 Smelting industrial pure iron with the technical scheme of the present invention

[0039] After the molten iron is discharged from the titanium slag furnace, the molten iron is mixed into the electric furnace. After the electric furnace heats up the molten iron to a temperature of 1550°C, the furnace door oxygen lance is used to blow oxygen for decarburization, phosphorus, silicon, and manganese. The oxygen flow rate of the oxygen lance is controlled at 0.20Nm 3 / (t min), after blowing oxygen for 20 minutes, the carbon of the molten iron is reduced to 0.021%, and the phosphorus is 0.004%. Vacuuming, the vacuum degree is controlled below 16Pa, and the oxygen activity in the molten iron is used for deep decarburization treatment for 15 minutes; after the vacuum treatment, the molten iron is transported to the LF furnace, and the high-basic calcium aluminate refining slag is used for deep desulfurization , After the sulfur content of the molten iron drops below...

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Abstract

The invention belongs to the field of steel smelting, and particularly relates to titanium slag furnace byproduct smelted industrial pure iron and a method thereof. To solve the problem that in the prior art, byproduct molten iron obtained after smelting of high titanium slag is not utilized for smelting industrial pure iron, the method of smelting the industrial pure iron through titanium slag furnace byproducts is provided. An electric furnace is used for conducting temperature rise deoxygenating on the molten iron, after electric furnace tapping, the molten iron is arranged in a VD furnace to be subjected to vacuum deep decarburization, and the molten iron obtained after decarburization is subjected to LF deep desulfuration. By means of the titanium slag furnace byproduct smelted industrial pure iron and the method thereof, carbon, silicon, manganese, phosphorus and sulfur of the molten iron can be effectively removed, and the carbon content is stabilized at the low level. The production technology is simple, the equipment requirement is not high, the quality of obtained products is good, and the problem about utilization of the high added value of the titanium slag furnace byproducts is effectively solved.

Description

technical field [0001] The invention belongs to the field of iron and steel smelting, and in particular relates to a method for smelting industrial pure iron by a by-product of a titanium slag furnace. Background technique [0002] Pure iron is a very soft metal with a silver-white metallic luster. Industrial pure iron is a kind of steel. Its chemical composition is mainly iron, with a content of 99.50%-99.90%, a carbon content of less than 0.04%, and less other elements. the better. Because it is not actually pure iron, this kind of steel that is close to pure iron is called industrial pure iron. Generally, industrial pure iron is very soft in texture, extremely tough, and has good electromagnetic properties. There are two common specifications, one is used as a deep drawing material, which can be stamped into extremely complex shapes; the other is used as an electromagnetic material, which has high magnetic sensitivity and low magnetic resistance, and is widely used in e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/52C22C38/00
CPCC21C5/52C22C38/00Y02P10/20
Inventor 陈炼陈小勇戈文荪曾建华叶良宇张峰吴相权王建
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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