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

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 ...

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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 material and the calendering method is used to produce microcrystalline glass. There are still few processes for crystal glass, and there is no production process for rapid cooling and vitrification that is sprayed with high-pressure cooling water during the rolling process.

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