Safety process for preventing desilicication slag and dephosphorization slag contained in converter slag pot from splashing

Abstract

The invention discloses a safety process for preventing desilicication slag and dephosphorization slag contained in a converter slag pot from splashing. The safety process comprises the steps that firstly, dry aluminum ash in an aluminum electrolysis plant is pulled and transported to a steel slag pot stockpiling area of a steel works; secondly, after converter desilicication slag is poured, a slag pot car is driven out, according to the proportion that 100 to 300 kg of aluminum ash is added in each ton of converter steel slag, operation is carried out, the aluminum ash is added, according tothe converter tapping amount, and the 100 kg slag amount of a ton of steel, the converter dephosphorization steel slag amount is calculated, the slag pot is used for continuously containing converterdephosphorization slag, and after converter deslagging is finished, according to the normal slag treatment process, steel slag is treated; thirdly, under the condition that the above operation condition is not allowable, the slag pot is used for containing the desilicication slag firstly, after the dephosphorization slag is contained, the slag pot car is driven out of the slag pot stockpiling area, and the aluminum ash is added from the upper portion of the slag pot; and fourthly, according to the manner of adding the aluminum ash into the slag pot, a loading machine loads the aluminum ash todirectly add the aluminum ash into the slag pot or ton bags are adopted for packaging the aluminum ash, a traveling crane is used for lifting the ton bags, the ton bags are added into the slag pot, orthe injection manner is used.

Description

technical field [0001] The invention relates to a safety technology for preventing desiliconization slag and dephosphorization slag contained in a converter slag tank from splashing. Background technique [0002] High-silicon molten iron is used in the converter steelmaking process, the amount of slag is large, the temperature is difficult to control during the smelting process, and the splashing phenomenon is frequent during the blowing process. Therefore, most of the current steel mills use the double slag smelting process to smelt high-silicon hot metal. Double slag smelting usually refers to pouring high-silicon molten iron into the converter, adding iron ore and blowing oxygen to remove silicon from the molten iron, then pouring out the steel slag produced in this process into the slag tank, and then adding slag The material completes metallurgical reaction processes such as decarburization, dephosphorization, and degassing. After the steelmaking task is over, the sme...

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Problems solved by technology

(2) Huang Zhiyong, Yan Genfa, and Zuo Duwei published a paper titled "Mechanism and Preventive Measures of Converter Slag Splashing" in the third issue of "Metal Materials and Metallurgical Engineering" in 2008. The description of the slag splash in the middle section does not mention the cause analysis of the slag splash in the slag pot after the slag is poured out of the converter

Aluminum ash is listed as hazardous waste by the country and cannot be transported out of the aluminum electrolysis plant, but each aluminum electrolysis plant produces a small amount of aluminum ash during the production of metal aluminum, and if it is processed, it will greatly increase the production cost

[0005] According to the above literature descriptions, it can be seen that there are few studies on the slag splashing process in the slag pot, and there is basically no introduction to the steel slag splashing problem that occurs when the slag pot contains desiliconization slag and decarburization slag at the same time.