Unshaped Bottom Contact Blocks for Electric Furnace

Description

Unshaped bottom contact blocks are made to order rather than stocked in fixed sizes, so the block geometry is taken from the customer drawing and the material grade is agreed against the furnace bottom condition being worked on. The refractory body used for this part has an alumina content of 83 percent and a silica content of 6.3 percent. Bulk density is 2.72 grams per cubic centimeter and the material is rated for a maximum working temperature of 1650 degrees Celsius. Because the part is supplied as a formed block rather than a field poured mass, it arrives as a finished unit and is placed at the furnace bottom as a single piece, which is the reason shops order it when a formed part is preferred over site work. Thickness, contour and overall dimensions are all quoted case by case, and price follows the drawing and the chosen material grade. Shops sourcing formed parts for a melting line often order these blocks together with custom precast furnace mouth bricks, since both are produced on the same made to order basis and can be quoted as one package. For a complete view of formed parts, unshaped refractory precast shapes covers the family this block belongs to. Buyers also compare it against rammed and cast options, and the lining solution for induction melting furnaces page sets out where each approach fits. Supply is quoted per drawing, per quantity and per material grade, with delivery arranged around the agreed production slot.