The scrap bucket bottom usually is a clam shell design-i.e. the bucket opens up by retracting two segments on the bottom of the bucket.Some large-tonnage bottom-opening OEM furnace parts do not match the ferroalloy melting fumace incaliber, resulting in more material perpendicular to the opening direction and uneven fabric. Uneven fabric sometimes causes scrap to stick to the lining, affecting the life of the lining; sometimes it will cause the scrap to fall on the under-railrail, affecting the normal operation of the under-vehicle, increasing the workload of the operator.