Ferroalloy casting modeling device and ferroalloy casting modeling process in front of furnace

Abstract

Provided are a ferroalloy casting modeling device and a ferroalloy casting modeling process in front of a furnace. The ferroalloy casting modeling device is composed of a ladle, a slag ladle, a ladle tip-over device, a slag and iron separating device, a casting tundish device and a cast iron car. The slag and iron separating device is composed of a slag and iron separating ladle and a tip-over device. A slag overflow port is arranged in the upper portion of the slag and iron separating ladle, a tap hole which is lower than the slag overflow port is arranged in the front portion of the slag and iron separating ladle, and a slag blocking wall is arranged inside the slag and iron separating ladle. The casting tundish device is composed of a casting tundish and a hydraulic cylinder. When the ferroalloy casting modeling device is used for conducting ferroalloy casting, firstly, the ladle and the slag ladle are used for conducting one-time slag removing to tap-off ferroalloy, secondly, the ladle is hoisted on the tip-over device, and the slag and iron separating device, the casting tundish device and a pig casting machine are used for carrying out secondary slag removing and casting modeling. According to the ferroalloy casting modeling process, through two times of slag removing, the effect of slag and iron separating is greatly improved, and not only is iron losing avoided, but also the slag content in the ferroalloy is lowered. Manual drossing is of no need, and labor power and cost are saved. Meanwhile, the granular size of the ferroalloy can be formed at one time according to the demands of users, and secondary processing and crushing are of no need.

Description

technical field [0001] The invention relates to metal casting, in particular to a ferroalloy front pouring molding equipment and a process for using the equipment to carry out ferroalloy front pouring molding. Background technique [0002] The existing casting and forming equipment in front of the ferroalloy furnace includes molten iron ladles containing liquid ferroalloys, slag ladles, ladle tipping devices, manual slag removal and skin pushing tools, ferroalloy ingot moulds, manual or mechanical crushing tools; some ferroalloy product varieties (such as nickel Iron, high-carbon ferrochrome alloy) is cast iron machine instead of ferroalloy ingot mold for casting. [0003] Use above-mentioned equipment to carry out ferroalloy casting in front of furnace, the technology commonly used at present is to cast with ferroalloy ingot mould, and cast with cast iron machine. [0004] The process of adopting ferroalloy ingot mold casting is as follows: pull the molten iron ladle to th...

AI Technical Summary

Problems solved by technology

[0007] 1. After the molten iron ladle and slag ladle car is pulled to the ingot casting process, the operator in front of the furnace and the bridge crane operator will carry out preliminary slag removal based on their experience and operating level. If they are inexperienced or improperly operated, it is easy to produce iron in the slag

[0008] 2. It is labor-intensive to carry out the first and second slag removal manually, and the working conditions of the workers are poor and the labor intensity is high

[0009] 3. Relying on manual slag removal, the quality is difficult to guarantee, and there are often excessive slag removal and dirty slag removal

Excessive scraping of slag will cause iron in the slag, especially in the second scraping process, iron in the slag cannot be avoided, which will reduce the recovery rate of the main elements of the alloy. In order to improve the recovery rate of the main elements, generally the slag in the second scraping process All of them are returned to the furnace, which will lead to an increase in the unit power consumption of ferroalloy products; if the slag removal is not clean, it will increase the slag content in the ferroalloy and affect the product quality. Therefore, it is necessary to push the skin after pouring and before the ferroalloy liquid is solidified. process, the residue is pushed away, and then a small part of the ferroalloy is pushed into the tail mold together with the residue, which increases the loss of the finished ferroalloy

[0010] 4. Because the ferroalloy ingots produced by this process are relatively large, in order to meet the requirements of ferroalloy users on the block size, the ferroalloy ingots with large block sizes must be crushed by manpower or machinery for secondary processing before delivery, which requires a lot of Labor, Equipment and Site

[0011] 5. In the process of manpower or mechanical crushing, according to different types of ferroalloy products, more than 6.5% of small-sized unqualified products will be produced, which cannot be used directly. They can only be returned to the furnace or sold at a reduced price, causing large economic losses.

[0012] 6. Ferroalloy blocks broken by manpower or machinery have different shapes and sizes, which may easily cause segregation of ferroalloy product components and affect the use effect of iron and steel smelting

[0013] Although the above-mentioned casting molding process using a cast iron machine overcomes the above-mentioned defects 4 to 6, several other defects still exist

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