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High-titanium protection stove pellet ore and preparation thereof

A pellet and high-titanium technology, which is applied in the field of metallurgy, can solve problems such as low melting point, accidents, and no high-titanium furnace protection pellets, etc., and achieves uniform particle size, reduced transportation costs, and good reducibility.

Active Publication Date: 2009-01-14
攀枝花一立矿业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-melting 2FeO·SiO produced during pellet roasting 2 It is easy to react with these basic oxides to form substances with lower melting points, causing "sticky furnace" accidents in the production process
[0011] So far, there is no report on the production of high-titanium furnace-protected pellets (titanium dioxide content above 15%), let alone the use of high-titanium furnace-protected pellets in blast furnace smelting

Method used

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  • High-titanium protection stove pellet ore and preparation thereof
  • High-titanium protection stove pellet ore and preparation thereof
  • High-titanium protection stove pellet ore and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 Preparation of high-titanium furnace protection pellets of the present invention

[0035] The vanadium-titanium iron concentrate and titanium concentrate in Table 2 are used as raw materials for batching, and then roasted according to the method of the present invention, and the performance of the prepared high-titanium furnace-protected pellets is measured. See Table 3 for the specific ingredient ratio and performance measurement results of high-titanium furnace protection pellets.

[0036] Table 3 Raw material ratio and performance determination of high-titanium furnace protection pellets

[0037]

Embodiment 2

[0038] Example 2 Preparation of High Titanium Furnace Protecting Pellets of the Present Invention

[0039] The vanadium-titanium iron concentrate, titanium concentrate and titanium medium ore in Table 2 are used as raw materials for batching, and then roasted according to the method of the present invention, and the performance of the prepared high-titanium furnace-protected pellets is measured. See Table 4 for the specific ingredient ratio and performance measurement results of high-titanium furnace protection pellets.

[0040] Table 4 Raw material ratio and performance determination of high titanium furnace pellets (TiO 2 content is about 20%)

[0041]

Embodiment 3

[0042] Example 3 Preparation of High Titanium Furnace Protecting Pellets of the Present Invention

[0043] The vanadium-titanium iron concentrate, titanium concentrate and titanium medium ore in Table 2 are used as raw materials for batching, and then roasted according to the method of the present invention, and the performance of the prepared high-titanium furnace-protected pellets is measured. See Table 5 for the specific ingredient ratio and performance measurement results of high-titanium furnace protection pellets.

[0044] Table 5 Raw material ratio and performance determination of high titanium furnace pellets (TiO 2 content is about 16.5%)

[0045]

[0046] As can be seen from Tables 3, 4, and 5, the drum index (GB8209) of the high-titanium furnace-protected pellets of the present invention can reach more than 85%, the compressive strength is ≥ 1800N / ball, and the furnace does not stick to the furnace during production.

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Abstract

The invention relates to a high titanium furnace protecting pellet and the preparation method, which belongs to the metallurgical field. The invention solves the technical problem that a high titanium furnace protecting pellet with titanic oxide content of more than 15 percent and the preparation method thereof. The high purity titanium furnace protecting pellet of the invention comprises that, TiO2 content occupies 15 percent to 35 percent, TFe content occupies 35 percent to 50 percent, and the preparation method comprises the steps of raw materials mixing, pellet fabricating, roasting and cooling. When the high titanium furnace guarding pellet is used for high furnace ironmaking, the furnace protection effect is good, the service life of the high furnace can be effectively improved, and the application prospect is wide.

Description

technical field [0001] The invention relates to high-titanium furnace protecting pellets and a preparation method thereof, belonging to the field of metallurgy. Background technique [0002] With the development of my country's iron and steel industry, the blast furnaces of major iron and steel enterprises are developing towards the goals of large-scale, high efficiency, low consumption and long life. The adoption of advanced titanium protection furnace technology in blast furnace smelting is one of the important measures to achieve the above goals. [0003] The furnace protection mechanism of the titanium furnace protection technology is: the titanium-containing furnace charge is reduced to Ti, enters the molten iron, and the supersaturated molten iron precipitates Ti (CN), and the eroded part is the pit position, so that the molten iron flows smoothly, and Ti will remain (CN) grain, due to the temperature gradient, the recess is filled up, so that the refractory brick in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00
Inventor 沙立林赵一刚曾永福梅作涛
Owner 攀枝花一立矿业股份有限公司
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