Converter refining furnace steel scrap Preheating equipment uses large vibration conveying, * * * combustion and dynamic seal up * * * * technologies such as heat energy conversion of high-temperature smoke and dust, system control, etc. can continuously transport and preheat scrap in front of the refining furnace, effectively increasing scrap addition and steel output of the steel plant, reducing production iron consumption, and improving enterprise benefits.
The scrap preheating equipment of converter refining furnace is divided into two sections: charging section and heating section. The feeding section is the part that receives scrap steel. The electromagnetic crane will lift the scrap steel to the feeding section, and the scrap steel it receives will be transported to the heating section under the vibration force. The heating section is a tunnel shaped channel with a square top, and its feed end is Dust removal pipe The tunnel is connected, the discharge end is connected to the refining ladle, and the upper part of the tunnel is equipped with a heating source to heat the scrap steel through an external heat source. The scrap steel before entering the ladle can be heated to 600~800 ℃ by using the surplus gas resources of the steel plant. The main process route is: scrap preheating equipment feeding section preheating section (burner baking) refining furnace ladle. The scrap preheating equipment of converter refining furnace has the following advantages: (1) Whole process variable frequency drive, equipment drive electric machinery Dynamic sealing motor, combustion supporting Fan The motor and other drive systems are all passed by the human-computer interaction system (HMI) Frequency converter Control can realize stepless speed regulation and dynamic control. The equipment can start and stop stably, operate reliably, and the heating capacity is controllable and adjustable, which is easy to match the existing production rhythm. (2) The scrap preheating equipment of converter refining furnace adopts the way of gas outlet from the bottom of the flue gas side to change the flow direction of the flue gas and evenly distribute the temperature of the heating section. At the same time, the dynamic seal is used to isolate the outside cold air from entering the heating section, which improves the scrap preheating degree and efficiency as a whole, reduces the smoke and dust overflow, and the site environment is clean. (3) Through the real-time detection of flue gas and material temperature in the heating section, the outlet material temperature is intelligently controlled to prevent the oxidation and burning loss of scrap steel Heat exchanger And other heat exchange measures, * * * reduce the temperature of discharged flue gas, improve gas efficiency and reduce * * *. (5) Various safety settings such as gas low-pressure alarm and interlock control are adopted to ensure the safe and effective operation of the equipment.
