Carbon Anode Baking Technology, Innovative Applications

The local traditional pre-baked anode baker was investigated and improved in detail, including the furnace structure, auto-control and unit assembling of carbon block, by adopting the advanced technology abroad, which aims at solving the existing problems, such as high energy consumption, short life span and low automation. The technical system of the innovative anode baker is reasonable, in adoption of local advanced furnace mould, while more than 80% of the furnace equipments are homemade. The heavy oil 200# was used as the fuel for the first time (as the first local smelter). All the operations of anode blocks in and out of the furnace, and tidy up are mechanized. In respect that various requirements of load and temperature on different parts of the baker, firebrick lining was chose reasonably, and the dosage of light heat preservation brick is in enlargement. As a result of that, the weight of the furnace was decreased, and increased its performance of heat preservation and cumulation was increased consumedly. With the use of "W" type fire tunnel and straight-through dilatation joint, and two enlargement of the perpends on the wall appropriately, all the problems of heat preservation in the anode baker, uniform temperature in the tunnel, and its life span were solved effectively. In the research of anode blocks in and out of the furnace, and of tidying it up, the multi-function crane clamps was alented and the assembling unit was reconstructed, which made it easy to automatic ally assemble the carbon blocks of various specifications with only one set of assembling unit (as the first local smelter).In the aspects of automation, a new type pulse combustor and solid thermocouple, as a result of that, not only the control accuracy of the fire tunnel'stemperature was increased, but also the system function was improned to be more dependable, safe and practicable. All the technical conditions were tested after the new type load baker was operated, with the testing data followed. The temperature difference between the practical and curvilinear theoretical temperature of fire tunnel is ±3°C. The baking curve could be optimized to 168 hours. The unit consumption of heavy oil was lowed to 65.2kg/t-c. The quality of the pre-baked anode after baking reached to the stand of TY-1 in YS/T 285-1998. All the technical terms have attained the advanced local level, which is highly valuable to be popularly applied.