阅读说明：本技术 一种液态锡快速降温装置和方法 (Liquid tin rapid cooling device and method ) 是由 宋兴诚 李正永 于 2020-06-23 设计创作，主要内容包括：一种液态锡快速降温装置和方法,所述装置由锡锅和搅机组成,锡锅为钢制锡锅,在锡锅外壁焊接有多组冷却管束,冷却管束底部端口为软化水进水口,冷却管束顶部端口为汽水混合物出口；软化水进水口与软化水连通,汽水混合物出口连接至蒸汽系统的汽水分离器；搅机是通过搅机安装脚架安装在锡精炼锅一侧、且能围绕搅机旋转装置旋转将搅桨放入或移出锡精炼锅内锡液层中的由搅机传动电机传动的电动一体化锡液搅机。本发明既不需要向锡液表面喷水降温,也不需要长时间自然降温,缩短了作业时间,提高了工效；同时避免了把水直接浇到锡液表面降温而产生大量含粉尘的水蒸气,也防止了高温锡液直接遇水爆炸的风险,安全和环保效果显著。(A liquid tin rapid cooling device and a method are disclosed, the device comprises a tin pot and a stirring machine, the tin pot is a steel tin pot, a plurality of groups of cooling tube bundles are welded on the outer wall of the tin pot, ports at the bottom of the cooling tube bundles are softened water inlets, and ports at the top of the cooling tube bundles are steam-water mixture outlets; the softened water inlet is communicated with softened water, and the steam-water mixture outlet is connected to a steam-water separator of the steam system; the stirring machine is an electric integrated tin liquid stirring machine which is arranged on one side of the tin refining pot through a stirring machine mounting foot stand and can rotate around a stirring machine rotating device to place or remove a stirring paddle into or out of a tin liquid layer in the tin refining pot and is driven by a stirring machine transmission motor. The invention does not need to spray water on the surface of the molten tin for cooling, and does not need natural cooling for a long time, thereby shortening the operation time and improving the work efficiency; meanwhile, the phenomenon that a large amount of water vapor containing dust is generated due to the fact that water is directly poured on the surface of the tin liquid to be cooled is avoided, the risk that the high-temperature tin liquid directly meets water for explosion is also avoided, and the safety and environment-friendly effects are obvious.)

1. The utility model provides a liquid tin rapid cooling device which characterized in that: the device consists of a tin pot (1) and a stirring machine (2); wherein the content of the first and second substances,

the tin pot (1) is made of steel, a plurality of groups of cooling tube bundles (5) are welded on the outer wall of the tin pot (1), the port of the bottom of each cooling tube bundle (5) is a softened water inlet (6), and the port of the top of each cooling tube bundle (5) is a steam-water mixture outlet (7); a softened water inlet (6) is communicated with softened water, and a steam-water mixture outlet (7) is connected to a steam-water separator of the steam system;

the stirring machine (2) is an electric integrated tin liquid stirring machine which is arranged on one side of the tin refining pot (1) through a stirring machine mounting foot stand (8) and can rotate around a stirring machine rotating device (9) to place or remove the stirring paddle (4) into or out of a tin liquid layer (3) in the tin refining pot and is driven by a stirring machine driving motor (10).

2. The liquid tin rapid cooling device according to claim 1, characterized in that: the cooling tube bundles (5) are arranged in four groups and are arranged on the outer wall of the tin pot (1) at equal intervals.

3. A method of using the cooling device of claim 1 or 2, characterized by the steps of:

1) when the tin liquid in the tin pot (1) needs to be cooled, a softened water inlet (6) of a cooling tube bundle (5) is respectively opened to inject softened cooling water into the cooling tube bundle (5);

2) softened cooling water absorbs heat of a tin liquid layer in a tin pot in a cooling tube bundle (5) and is vaporized into steam, the steam is discharged to a steam-water separator of an external steam system from a steam-water mixture outlet (7), and the steam and the water are respectively recovered;

3) the rotary stirring machine (2) is used for placing the stirring paddle (4) into the tin liquid layer (3) in the tin pot (1) for stirring, so that the temperature of the tin liquid layer (3) in the tin pot (1) is uniform; and when the temperature of the tin liquid layer (3) is reduced to the required target temperature, the softened water inlet (6) is closed.

Technical Field

The invention belongs to the technical field of nonferrous metal metallurgy equipment, and particularly relates to a liquid tin rapid cooling device and a method.

Background

In the refining process of tin, the temperature of molten tin needs to be increased or decreased according to the requirements of impurity removal, casting and the like, and the method of burning or electric heating under a tin pot is generally adopted for increasing the temperature of the molten tin.

The temperature of the tin liquid is reduced, and the traditional operation method is that cold water is poured on the surface of the high-temperature liquid tin for cooling, so that the temperature of the high-temperature liquid tin is reduced to a target temperature, or the high-temperature tin liquid is naturally cooled to the target temperature for a long time. The method of pouring cold water on the surface of the high-temperature liquid tin for cooling to reduce the temperature of the high-temperature liquid tin to the target temperature needs to spray a large amount of cold water into a tin receiving pot for cooling. Cold water and high temperature liquid tin direct contact can produce a large amount of dust and vapor that contain harmful elements such as heavy metal, have the risk that high temperature liquid tin directly meets water explosion simultaneously, and environmental protection and safety problem are outstanding. The method for naturally cooling the high-temperature tin liquid to the target temperature for a long time needs long-time natural cooling, and has the advantages of slow cooling process, long operation time and low working efficiency. In some cases, the long-term cooling can also cause impurities in the tin liquid to rise, resulting in the condition of unqualified products. For example, the tin of the product with the residual aluminum removed is higher than the optimal casting temperature, and in the process of cooling and waiting for casting, if the cooling speed is too slow, the iron in a tin pot can be dissolved into tin liquid, so that the situation that the iron content of the refined tin product is increased to exceed the standard is caused.

By the two cooling methods, the energy released when the high-temperature liquid tin is cooled to a proper temperature is not utilized, but is wasted, and the energy utilization efficiency is poor.

Disclosure of Invention

The invention aims to solve the problems of the existing liquid tin cooling method, and provides a device and a method for rapidly cooling liquid tin, so as to achieve the purposes of improving the working efficiency and the heat utilization rate and reducing the safety and environmental protection risks.

The purpose of the invention is realized by the following technical scheme:

a liquid tin rapid cooling device is composed of a tin pot and a stirring machine; the tin pot is made of steel, a plurality of groups of cooling tube bundles are welded on the outer wall of the tin pot, ports at the bottoms of the cooling tube bundles are softened water inlets, and ports at the tops of the cooling tube bundles are steam-water mixture outlets; the softened water inlet is communicated with softened water, and the steam-water mixture outlet is connected to a steam-water separator of the steam system;

the stirring machine is an electric integrated tin liquid stirring machine which is arranged on one side of the tin refining pot through a stirring machine mounting foot stand and can rotate around a stirring machine rotating device to place or remove a stirring paddle into or out of a tin liquid layer in the tin refining pot and is driven by a stirring machine transmission motor.

Preferably, the cooling tube bundles are arranged in four groups and are arranged on the outer wall of the tin pot at equal intervals.

The invention also discloses a method for rapidly cooling liquid tin, which comprises the following steps:

1) when the tin liquid in the tin pot needs to be cooled, respectively opening a softened water inlet of the cooling tube bundle to inject softened cooling water into the cooling tube bundle;

2) softened cooling water absorbs heat of a tin liquid layer in the tin pot in the cooling tube bundle and is vaporized into steam, and the steam are discharged to a steam-water separator of an external steam system from a steam-water mixture outlet and are respectively recycled;

3) the stirring paddle is placed into the tin liquid layer in the tin pot to be stirred by the rotary stirring machine, so that the temperature of the tin liquid layer in the tin pot is uniform; and when the temperature of the tin liquid layer is reduced to the required target temperature, the softened water inlet is closed.

The invention has at least the following beneficial effects:

1) the invention can quickly cool the high-temperature tin liquid to the target temperature according to the requirement, does not need to spray water on the surface of the tin liquid for cooling, does not need to naturally cool for a long time, shortens the operation time and improves the work efficiency; meanwhile, the phenomenon that a large amount of water vapor containing dust is generated due to the fact that water is directly poured on the surface of the tin liquid for cooling is avoided, the risk that the high-temperature tin liquid directly encounters water for explosion is also avoided, and the safety and environmental protection effects are obvious;

2) the invention enables a large amount of heat in the high-temperature tin liquid to be efficiently recovered in the process of conducting to the cooling tube bundle on the outer wall of the pot, and the heat is converted into clean steam for a heat supply system, so that the heat utilization rate is greatly improved, and the energy-saving effect is good.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.

Referring to fig. 1, a liquid tin rapid cooling device is composed of a tin pot 1 and a stirring machine 2; the tin pot 1 is made of steel, and four groups of cooling tube bundles 5 are welded on the outer wall of the tin pot 1 at equal intervals; the port at the bottom of the cooling tube bundle 5 is a softened water inlet 6, and the port at the top of the cooling tube bundle 5 is a steam-water mixture outlet 7; a softened water inlet 6 is communicated with softened water, and a steam-water mixture outlet 7 is connected to a steam-water separator of the steam system;

the stirrer 2 is an electric integrated tin liquid stirrer which is arranged on one side of the tin refining pot 1 through a stirrer mounting foot stand 8 and can rotate around a stirrer rotating device 9 to place or move the stirring paddle 4 into or out of the tin liquid layer 3 in the tin refining pot through a stirrer driving motor 10.

The method for using the cooling device comprises the following steps:

1) when the tin liquid in the tin pot 1 needs to be cooled, respectively opening a softened water inlet 6 of the cooling tube bundle 5 to inject softened cooling water into the cooling tube bundle 5;

2) softened cooling water absorbs heat of a tin liquid layer in a tin pot in a cooling tube bundle 5 and is vaporized into steam, the steam is discharged to a steam-water separator of an external steam system from a steam-water mixture outlet 7, and the steam and the water are respectively recovered and utilized;

3) the stirring paddle 4 is placed into the tin liquid layer 3 in the tin pot 1 to be stirred by the rotary stirring machine 2, so that the temperature of the tin liquid layer 3 in the tin pot 1 is uniform; when the temperature of the tin liquid layer 3 is reduced to the required target temperature, the softened water inlet 6 is closed.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.