Efficient and energy-saving tin smelting furnace high-temperature crude tin cooling device and method

Abstract

The invention discloses an efficient and energy-saving tin smelting furnace high-temperature crude tin cooling device and method. The device is a rapid cooling chute which is formed between a crude tin discharge port in a smelting furnace and a tin receiving pot and is an arc-groove-shaped tin-plated chute made of boiler steel; a water inlet header made of boiler steel, a heat exchange tube bundlemade of boiler steel and a steam-water mixture header made of boiler steel are sequentially welded at the bottom of the rapid cooling chute along the radian of the rapid cooling chute; the water inlet header communicates with the steam-water mixture header through the heat exchange tube bundle; the water inlet header is provided with a water inlet, and the steam-water mixture header is provided with a steam-water mixture outlet; the water inlet, a water inlet pump and make-up water are sequentially connected, the steam-water mixture outlet communicates with a steam-water separator, and the water inlet pump communicates with the steam-water separator; and a steam discharge pipeline is arranged at the top of the steam-water separator, and a valve is arranged at the water inlet. According tothe device and method, the operation time can be shortened, the work efficiency can be improved, the generation of a large amount of dust and water vapor containing arsenic and other harmful elementsis avoided, and the safety and environment protection effects are obvious.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal metallurgy, and in particular relates to a high-efficiency and energy-saving tin smelting furnace high-temperature crude tin cooling device and method. Background technique [0002] The temperature of crude tin smelted by tin smelting furnaces is generally above 1000°C, and its composition includes lead, arsenic, iron, copper, antimony, lead, bismuth, gold, silver, indium, etc. in addition to tin. [0003] The traditional operation method is to flow the high-temperature crude tin into the tin receiving pot through a heat preservation chute made of refractory material, and in the tin receiving pot, pour cold water on the surface of the high-temperature liquid crude tin above 1000°C to cool it, so that the high-temperature coarse tin The temperature is lowered to about 500°C, so that the crude tin containing arsenic, iron and other impurities in it forms ethyl tin and floats on the crude t...

AI Technical Summary

Problems solved by technology

Direct contact between cold water and high-temperature crude tin will generate a large amount of dust and water vapor containing harmful elements such as arsenic. At the same time, there is a risk of explosion of high-temperature crude tin directly in contact with water, and environmental protection and safety issues are prominent.

At the same time, the cooling process is slow, the operation time is long, and the work efficiency is low

The poured water directly turns into dust-containing steam, which not only requires dust collection and other treatment, but also wastes the heat in the crude tin, which increases the energy consumption of tin smelting

At the same time, since the temperature of the high-temperature crude tin directly flowing into the tin pot is above 1000°C, the requirements for the material of the tin pot are high, and some tin pots even need to be lined with heat-resistant materials, and it is difficult to avoid the impact of high temperature Damaged, the service life of the tin pot is short, and frequent maintenance is required, which increases the cost of production and reduces the work efficiency.

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