Refining aluminum consumption control method based on remote infrared monitoring

Abstract

The invention discloses a refining aluminum consumption control method based on remote infrared monitoring. The method comprises the following steps: monitoring steel slag passing through the surface of steel stream from two directions to automatically judge tapping and finish of tapping; and continuously collecting steel slag flowing into a steel ladle during tapping; and accurately calculating the weight of aluminum added during actual refining according to the weight of the steel slag collected when tapping is finished, wherein the data can be used as the preparation of next stage, such asthe input data of a metal thread feeding machine or direct instructions for operators to prepare materials. The method can achieve the purpose of accurately controlling the refining aluminum consumption is achieved.

Description

technical field [0001] The invention relates to the technical field of modern steelmaking and refining, in particular to a method for controlling the amount of refined aluminum based on remote infrared monitoring. Background technique [0002] In the modern steelmaking operation process, the molten steel after being tapped from the converter generally needs to be refined through an out-of-furnace refining process. The molten steel is moved to another container with vacuum, inert gas or reducing atmosphere for degassing, deoxidation, desulfurization, removal of inclusions and fine-tuning of composition and other refining operations. It is also called secondary metallurgy. In the process, it is necessary to feed aluminum wire into the container (such as a ladle) through a wire feeder to perform deep desulfurization, calcium treatment, and fine-tune the carbon and aluminum components in the steel. At the same time, the molten steel is cleaned and the form of non-metallic inclus...

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Problems solved by technology

[0002] In the modern steelmaking operation process, the molten steel after being tapped from the converter generally needs to be refined through an out-of-furnace refining process. The molten steel is moved to another container with vacuum, inert gas or reducing atmosphere for degassing, deoxidation, desulfurization, removal of inclusions and fine-tuning of composition and other refining operations. It is also called secondary metallurgy. In the process, it is necessary to feed aluminum wire into the container (such as a ladle) through a wire feeder to perform deep desulfurization, calcium treatment, and fine-tune the carbon and aluminum components in the steel. At the same time, the molten steel is cleaned and the form of non-metallic inclusions is improved. Most of the silk fed in the refining process reacts with molten steel, which is called effective reaction, and a part of it reacts with steel slag in molten steel, called consumption reaction. The amount of silk fed in the refining process is determined by the amount of effective reaction and consumption reaction. The amount of effective reaction is given by the technological requirements of molten steel, and the amount of consumption reaction is estimated according to the amount of steel slag. At present, to know the amount of steel slag in molten steel, the molten steel in the ladle must be cleaned, and then the remaining steel slag Pour out and weigh. Obviously, such an operation cannot be carried out before refining, and the operation takes too long, which affects the production plan and cannot be carried out in the furnace. As a result, the current calculation of the amount of aluminum is based on the previous experience of the amount of steel slag. The estimated amount of slag is smaller than the actual demand, resulting in insufficient deoxidation accidents of molten steel. When the estimated amount of slag is larger than the actual demand, it will cause waste of materials. Therefore, the current aluminum consumption control is still an inaccurate operation method, which has a large the disadvantages of

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