The bottom of the converter in our steelmaking plant has dropped too much. What methods can make the bottom of converter rise? Urgent! ! !

The simplest and most effective way is to be at the bottom. I don't know how big your stove is. I'm in a 50-ton furnace, so I just add ordinary burden directly to the furnace with a scrap bucket, and then shake the furnace on the small surface. It is estimated that when the material is almost flat, I will shake the furnace directly, blow it with nitrogen when I get off the gun, and then blow it with small oxygen. The flow rate is best not to exceed 1000. By the way, one ton of that charging material is enough, but it's too much to make up. Blow oxygen for a few minutes and let it stand for about 30 minutes. You can find out how much material to add and how long to leave it. If it doesn't work this time, add more material next time and let it stand for a while. This is used when the bottom of the furnace is eaten too hard. If you don't eat too hard, you can gradually increase it through surgery. The key point is to improve the basicity of the final slag, operate at low gun position, make the final slag thicken and pour clean, leave a part in the furnace, first add scrap steel, and shake the furnace directly to the small surface to make the bottom of the furnace rise faster.

Design basis of steelmaking plant

The basis of steel plant design is the design project proposal put forward by Party A or the manufacturer and approved by the relevant government departments, which can be a part of the design content of the whole steel enterprise or a single steel plant. In addition, some facilities in the steelmaking plant, such as steelmaking furnace and continuous casting machine, can also be designed separately. In addition, in addition to the project proposal, some bases for steel plant design need to be provided by adjacent disciplines. For example, for the design of steel casting plants connected with converters, they mainly include:

(1) The production scale of steelmaking should indicate the first and second phases, or whether there is room for future development.

(2) Product variety, including steel grade and product size form (this item can be called by the steel rolling specialty according to the general task book).

(3) Composition of molten iron, including the contents of elements such as C, Si, Mn, P and S, and the contents of trace elements such as V, Ti and Nb (this item can be transferred by the ironmaking specialty according to the general task book).

(4) The capacity and quantity of oxygen converters (it should be explained when entrusting a single converter design, and it can also be explained when designing the whole workshop; If the converter is a reconstruction project in an existing factory building, the dimensions and drawings of the factory building around the converter shall be provided).

(5) The section size of various continuous casting billets cast by the continuous casting machine, the single machine production capacity, the number of continuous casting machines required, and the type of continuous casting machines required (such as arc multi-point straightening, vertical bending arc multi-point straightening, etc.). ) and basic radius. If the continuous caster is an expansion or reconstruction project of the existing workshop, the dimensions and drawings of the workshop around the continuous caster shall be provided.

(6) For the overall design of converter continuous casting steelmaking plant, it is necessary to provide the composition and particle size of basic raw materials (lime, fluorite, iron-rich ore, iron oxide scale, etc.). ) Arriving at the workshop, the types and quality of scrap steel (especially supplied scrap steel), the status of various available energy sources, the types and quality of refractory materials (mainly furnace lining materials), etc. , and put forward the mode of transportation of these items.

(7) For the overall design of converter continuous casting steelmaking plant, the specific requirements of Party A or the manufacturer, such as the level of adopting new technology, the utilization of existing auxiliary equipment, the use and limitation of investment, the required supporting equipment, such as the capacity of iron mixer and the type of refining outside the furnace, and the relevant customs and habits in this area.

(8) China's current laws, systems and regulations on industrial construction and production, especially the provisions of steel quality and variety standards, environmental protection law, energy policy, labor protection law, metallurgical construction, etc. , must strictly abide by, seriously implement.