Cupola is the main melting equipment in the domestic and foreign foundry production. The energy consumption of the melting industry accounts for about 70% of the total energy consumption of the castings. In the cupola smelting process, the use of microcomputer control and the use of manual control can save 10%-15% of coke, and can obtain pure hot metal and suitable hot metal overheating temperature. Microcomputer control series of products are used in a number of foundry manufacturers, achieving significant energy savings. The use of high-pressure centrifugal blowers dedicated to cupolas saves 50% to 60% of electricity compared to the use of Roots blowers. At present, the thermal efficiency of cupolas is generally 24%-34%.
The energy consumption of the Zibo electric roller in the foundry furnace is second only to the melting furnace, which is about 20% of the total energy consumption. Various furnaces, drying ovens, and annealing furnaces were reformed, from the furnace structure to the combustion technology, as well as the adoption of new processes and new technologies.
Fire-resistant fiber is a new type of energy-saving material that has been popular for more than a decade. The use of fire-resistant fibers has made it easy to retrofit existing industrial kilns with low investment and significant energy savings. Fire-resistant fiber has a series of excellent properties such as high temperature resistance, low thermal conductivity, small thermal capacity, good thermal insulation performance and good chemical stability. Using it can reduce the lining heat loss and heat storage loss, energy saving 20% ​​-40%.
In addition, for the addition of coal to coal-fired industrial furnaces, the use of mechanical coal addition and manual coal addition for oil-cooled electric drums is more regular and uniform, reducing the heat loss from incomplete combustion of gases and solids, saving 20%. . Far-infrared drying technology is used for heating furnaces such as core drying ovens. The drying speed is fast, the baking quality is good, and power saving can be about 30% to 40%.
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