Adaptive control system and method for mechanical centrifugal pelletization of blast furnace slag

Abstract

The invention provides an adaptive control system and method for mechanical centrifugal pelletization of blast furnace slag. The adaptive control system for the mechanical centrifugal pelletization ofthe blast furnace slag comprises a sag taking mechanism that comprises a sag taking tray; one end of the sag taking tray is fixed on a rotation shaft, and connected with a driving mechanism; the driving mechanism is connected with a lower computer; the sag taking tray is rotated around the rotation shaft under the driving of the driving mechanism, and the other end of the sag taking tray is extended into a palletization cabin to sample blast furnace slag particles, and the sag taking tray is rotated to the position of a limit switch after sampling; the limit switch is connected with the lowercomputer; the lower computer is used for receiving signals transmitted by the limit switch, and thus controlling the sag taking mechanism to stop rotating, and controlling an image collection deviceto collect a blast furnace slag particle image on the sag taking tray; the image collection device is connected with an industrial personal computer, and the industrial personal computer is used for receiving the blast furnace slag particle image, acquiring particle diameters after processing, and analyzing the particle diameters by using a fuzzy neural network PID algorithm; and the lower computer adjusts the flow or rotation speed of the hydraulic slag palletization device, and thus the purpose of adaptively controlling the particle diameters is achieved.

Description

technical field [0001] The disclosure belongs to the technical field of mechanical centrifugal granulation of blast furnace slag, and in particular relates to an adaptive control system and method for mechanical centrifugal granulation of blast furnace slag. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] During the ironmaking process, the sintered iron ore will produce a large amount of blast furnace slag by-products. According to research, about 0.3-0.4 tons of blast furnace slag is produced for every ton of pig iron produced. The temperature is about 1500 ° C, which has large output and high heat specialty. At the same time, the main component of blast furnace slag is SiO 2 , CaO, MgO, Al 2 o 3 , is the raw material for cement production. [0004] The inventors found that 1) the traditional blast furnace slag treatment process is ...

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Problems solved by technology

[0004] The inventors found that 1) the traditional blast furnace slag treatment process is processed by water quenching. After the liquid slag and molten iron are separated, a large amount of tap water is used to wash the blast furnace slag. This process not only wastes a lot of water resources, It also caused a large loss of heat resources in the blast furnace slag, and produced a large amount of SO 2 , H 2 S polluting gas has brought a great impact on environmental governance;

[0005] 2) After the liquid slag and molten iron are separated, the liquid slag forms particles under the action of centrifugal granulation through a centrifugal device. The size of the particles greatly affects the recovery of heat, the efficiency of heat recovery and the diameter of blast furnace slag particles. There is a direct connection, the smaller the particle diameter, the higher the heat recovery efficiency, but if the particle size is too small, it is easy to pull into silk and form slag cotton, which is not conducive to subsequent recovery; in order to improve the processing efficiency and ensure a certain heat recovery efficiency, The particle diameter after granulation needs to be controlled below 2mm

[0006] 3) The traditional particle size detection methods mainly include screening method, sedimentation method, microscope method and electric induction method, all of which have their own application fields, but in the field of mechanical centrifugal granulation of blast furnace slag, the granulation particle diameter of blast furnace slag Real-time monitoring does not meet the requirements

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