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Online continuous treatment method for molten titanium-containing blast furnace slag

A treatment method and technology of blast furnace slag, which is applied in the field of online continuous processing of molten titanium-containing blast furnace slag, can solve the problems of increasing processing procedures, waste of heat, and large water consumption, so as to solve large-area accumulation and pollute the environment, and avoid occupying land The effect of large area and reduced energy consumption

Active Publication Date: 2021-02-05
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process provides a cooling method for hot high-titanium blast furnace slag, but on the one hand, it needs to transfer the slag during the slag turning process, which increases the treatment process; Large, and the heat in the slag will be completely wasted
[0005] It can be seen from the above that the current method of preparing construction gravel by cooling the hot titanium-containing blast furnace slag has some shortcomings in terms of processing procedures, energy consumption, and crystallization behavior control.

Method used

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  • Online continuous treatment method for molten titanium-containing blast furnace slag
  • Online continuous treatment method for molten titanium-containing blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (1) The high-temperature liquid molten titanium-containing blast furnace slag discharged from the blast furnace 1 enters the quenching and tempering furnace body 21 through the slag ditch 5;

[0060] (2) In the quenching and tempering furnace body 21, 6% quartz sand, 3% alumina powder, 0.5% fluorite tailings and 0.5% ferrochrome slag are added by the feeding pipe 22 in a top-blown manner, while the gas spray gun 23 is heated by combustion and heated to 1450°C;

[0061] (3) The titanium-containing blast furnace slag after quenching and tempering enters the crystallization control furnace body 31 through the guide pipe 6, and the thickness of the titanium-containing blast furnace slag is controlled by the roll 32, and the thickness of the titanium-containing blast furnace slag is controlled to be 10 mm, and is transported The roller 35 drives the bearing plate 36 to transport the titanium-containing blast furnace slag;

[0062] (4) In the process of passing through the r...

Embodiment 2

[0066] (1) The high-temperature liquid molten titanium-containing blast furnace slag discharged from the blast furnace 1 enters the quenching and tempering furnace body 21 through the slag ditch 5;

[0067] (2) In the tempering furnace body 21, 13% quartz sand, 5% alumina powder, 1% fluorite tailings and 1% ferrochrome slag are added by the feeding pipe 22 in a top-blown manner, while the gas spray gun 23 is heated by combustion and heated to 1500°C;

[0068] (3) The titanium-containing blast furnace slag after quenching and tempering enters the crystallization control furnace body 31 through the guide pipe 6, and the thickness of the titanium-containing blast furnace slag is controlled by the roll 32, and the thickness of the titanium-containing blast furnace slag is controlled to be 30 mm, and is transported The roller 35 drives the bearing plate 36 to transport the titanium-containing blast furnace slag;

[0069] (4) In the process of passing through the roll 32, the slow ...

Embodiment 3

[0073] (1) The high-temperature liquid molten titanium-containing blast furnace slag discharged from the blast furnace 1 enters the quenching and tempering furnace body 21 through the slag ditch 5;

[0074] (2) In the tempering furnace body 21, 16% of quartz sand, 7% of alumina powder, 1% of fluorite tailings and 1% of ferrochrome tailings are added by feeding pipe 22 in a top-blown manner, and gas The spray gun 23 is heated by combustion and heated to 1550°C;

[0075] (3) The titanium-containing blast furnace slag after quenching and tempering enters the crystallization control furnace body 31 through the guide pipe 6, and the thickness of the titanium-containing blast furnace slag is controlled by the roll 32, and the thickness of the titanium-containing blast furnace slag is controlled to be 50mm, and is transported The roller 35 drives the bearing plate 36 to transport the titanium-containing blast furnace slag;

[0076] (4) In the process of passing through the roll 32, ...

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Abstract

The invention discloses an online continuous treatment method for molten titanium-containing blast furnace slag. The method comprises the following steps of: quenching and tempering high-temperature liquid molten titanium-containing blast furnace slag; cooling and molding the quenched and tempered titanium-containing blast furnace slag; carrying out crystallization regulation and control on the cooled and molded titanium-containing blast furnace slag; carrying out cracking treatment on the titanium-containing blast furnace slag subjected to crystallization regulation and control to obtain slagblocks; and screening the cracked slag blocks. By utilizing the strong self-crystallization capacity of the titanium-containing blast furnace slag, the molten titanium-containing blast furnace slag is subjected to component regulation and control, cooling temperature system control, crystallization optimization, stress excitation and the like, so that the energy consumption in the process of cooling the molten titanium-containing blast furnace slag is reduced, the crystalline phase composition of condensed slag blocks is improved, the content of a glass phase is reduced, meanwhile, the energyconsumption during slag block crushing is also reduced, the occupied area is small, the labor force loss is small, the titanium-containing blast furnace slag blocks used as building concrete aggregate are obtained, and therefore bulk online treatment of the molten titanium-containing blast furnace slag is achieved.

Description

technical field [0001] The invention relates to the technical field of blast furnace slag processing, in particular to an on-line continuous processing method for molten titanium-containing blast furnace slag. Background technique [0002] Titanium-containing blast furnace slag is a high-TiO produced by the smelting of vanadium-titanium magnetite in my country. 2 content of solid waste, compared with ordinary blast furnace slag, titanium-containing blast furnace slag, especially high-titanium blast furnace slag due to high TiO 2 The content makes it impossible to use it as a cement production additive for large-scale processing, resulting in a large amount of accumulation. With the increasingly stringent environmental protection requirements, the large-scale titanium-containing blast furnace slag accumulated in the ravines and forest edges urgently needs to be treated, and the newly produced titanium-containing blast furnace slag also urgently needs to be treated "online" t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/06C04B5/00C21B3/08C21B3/06
CPCC04B5/06C04B5/00C21B3/08C21B3/06Y02W30/50
Inventor 闫炳基黄晓峰赵伟李鹏国宏伟杨墨瞳
Owner SUZHOU UNIV
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