Continuous casting and rolling method and device for producing glass ceramics by utilizing blast-furnace slag

A technology of blast furnace slag and glass ceramics, applied in the fields of metallurgy and inorganic non-metallic materials, to reduce excessive consumption, increase economic profits, and reduce waste water

Active Publication Date: 2014-02-05
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patents disclosed above indicate that the raw materials of glass-ceramics are mainly tailings and blast furnace slag. Among the production methods, the calendering method is a relatively common production process, but the general high-temperature slag is used as the raw

Method used

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  • Continuous casting and rolling method and device for producing glass ceramics by utilizing blast-furnace slag
  • Continuous casting and rolling method and device for producing glass ceramics by utilizing blast-furnace slag
  • Continuous casting and rolling method and device for producing glass ceramics by utilizing blast-furnace slag

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Embodiment 1

[0079] The blast furnace slag provided by the present embodiment prepares glass-ceramic comprising the following steps:

[0080] (1) The 1500°C molten slag flowing out of the blast furnace is transferred to the composition stirring pool through the iron mixing furnace for heating and heat preservation;

[0081] (2) Add the component modifier into the component stirring tank, blow inert gas and coal powder from the top and bottom to mix the components evenly and keep the temperature at 1450-1500°C for 1 hour;

[0082] (3) The slag enters the primary cooling zone, spraying high-pressure cooling water on both sides of the roller table to quickly cool the shell to below 900°C for vitrification, and enter the nucleation zone before the surface of the shell is not lower than 500°C;

[0083] (4) Raise the temperature of the product to 800°C at a heating rate of 10°C / min, and keep it warm for 2.5 hours before entering the crystallization zone;

[0084] (5) Raise the temperature of th...

Embodiment 2

[0089] The blast furnace slag provided by the present embodiment prepares glass-ceramic comprising the following steps:

[0090] (1) The 1500°C molten slag flowing out of the blast furnace is transferred to the composition stirring pool through the iron mixing furnace for heating and heat preservation;

[0091] (2) Add component modifiers, nucleating agents, etc. into the component stirring tank, blow inert gas and coal powder from the top and bottom to mix the components evenly and keep the temperature at 1450-1500°C for 1 hour;

[0092] (3) The slag enters the primary cooling zone, spraying high-pressure cooling water on both sides of the roller table to quickly cool the shell to below 900°C for vitrification, and enter the nucleation zone before the surface of the shell is not lower than 500°C;

[0093] (4) Raise the temperature of the product to 780°C at a heating rate of 10°C / min, and keep it warm for 2 hours before entering the crystallization zone;

[0094] (5) Raise t...

Embodiment 3

[0099] The blast furnace slag provided by the present embodiment prepares glass-ceramic comprising the following steps:

[0100] (1) The 1500°C molten slag flowing out of the blast furnace is transferred to the composition stirring pool through the iron mixing furnace for heating and heat preservation;

[0101] (2) Add component modifiers, nucleating agents, etc. into the component stirring tank, blow inert gas and coal powder from the top and bottom to mix the components evenly and keep the temperature at 1450-1500°C for 1 hour;

[0102] (3) The slag enters the primary cooling zone, spraying high-pressure cooling water on both sides of the roller table to quickly cool the shell to below 900°C for vitrification, and enter the nucleation zone before the surface of the shell is not lower than 500°C;

[0103] (4) Raise the temperature of the product to 740°C at a heating rate of 10°C / min, and keep it warm for 1.5 hours before entering the crystallization zone;

[0104] (5) Raise...

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Abstract

The invention belongs to the fields of metallurgy and inorganic nonmetal materials, and provides a continuous casting and rolling method and device for producing glass ceramics by utilizing blast-furnace molten slag. The method comprises the following steps of (1) transferring a temperature interval when the blast-furnace molten slag is maintained in a blast-furnace tapping hole to a component tempering mixing pool, adding and uniformly stirring corresponding modifiers, coloring agents and nucleating agents, and ensuring that the molten slag stays in a high-temperature interval; (2) driving the molten slag to enter a rolling forming area through a slag port and then enter a primary cooling area, and ensuring that the molten slag enters a nucleating area before the temperature of the surface of a shell is not lower than 500DEG C; (3) continuously heating to a crystallization area; (4) entering a cooling area, and cooling the molten slag to obtain a formed product; (5) cutting the formed product in a fixed size and polishing the surface of the formed product to obtain finished product glass ceramics. By adopting the continuous casting and rolling method and the device, the blast-furnace slag and solid waste resource are utilized, the produced glass ceramics have the advantages of high strength and acid and alkali corrosion resistance, and the economic benefit and the environment-friendly benefit are obvious.

Description

technical field [0001] The invention relates to the fields of metallurgy and inorganic non-metallic materials, and provides a continuous casting and rolling process and equipment for producing glass-ceramic by using blast furnace slag. Background technique [0002] According to the data released by the World Iron and Steel Association, the world’s pig iron production in 2012 was 1.1 billion tons, of which the country with the highest output was China, with an annual output of 650 million tons in 2012. The output of slag is also as high as nearly 200 million tons. How to efficiently utilize these high-temperature slags has gradually become a focus of attention. The current blast furnace slag treatment process basically adopts the water flushing slag process, and the obtained products are basically used in cement production, and the blast furnace slag used as raw material for cement production has almost no profit at all. At the same time, every ton of high-temperature slag ...

Claims

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Application Information

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IPC IPC(8): C03B13/01C03B32/02C03C10/04
Inventor 国宏伟张建良郭建刘峰
Owner UNIV OF SCI & TECH BEIJING
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