The operator uses a motorized train system to move a deep tray on wheels, called a chill mold, to a hole position and an electric arc device to tap a drain hole through the solidified calcium carbide and other materials that plug the hole in the side of the furnace. The molten calcium carbide inside the furnace then drains from the tap hole into the chill mold. After filling multiple chill molds, the calcium carbide in that section of the furnace is drained, and the flow from the tap hole slows significantly. Operators then plug the hole with a mixture similar to mud and clay and move to tap the next location. Downstream units on-site dump the chill molds, grind and screen the calcium carbide, and package the product.
The calcium carbide remains in the molds until it cools to about 500°F.
The operator uses a motorized train system to move a deep tray on wheels, called a chill mold, to a hole position and an electric arc device to tap a drain hole through the solidified calcium carbide and other materials that plug the hole in the side of the furnace. The molten calcium carbide inside the furnace then drains from the tap hole into the chill mold. After filling multiple chill molds, the calcium carbide in that section of the furnace is drained, and the flow from the tap hole slows significantly. Operators then plug the hole with a mixture similar to mud and clay and move to tap the next location. Downstream units on-site dump the chill molds, grind and screen the calcium carbide, and package the product.The calcium carbide remains in the molds until it cools to about 500°F.
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