RU95109586A - Method of smelting cast-iron in hot-blast cupola
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Method of smelting cast-iron in hot-blast cupola
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Publication number
RU95109586A
RU95109586ARU95109586/02ARU95109586ARU95109586ARU 95109586 ARU95109586 ARU 95109586ARU 95109586/02 ARU95109586/02 ARU 95109586/02ARU 95109586 ARU95109586 ARU 95109586ARU 95109586 ARU95109586 ARU 95109586A
Пензенский государственный технический университет
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Publication of RU2092569C1publicationCriticalpatent/RU2092569C1/en
FIELD: mechanical engineering. SUBSTANCE: smelting is started at maximum temperature of blast air equal to 450-550 C which is maintained for 75-85% of total smelting time, after that supply of gas for heating the air heater is discontinued and smelting is completed at blast temperature within 150-200 C and preheating is effected due to heat accumulated by refractory lining of air preheater. EFFECT: saving of fuel; preheating of blast at enhanced efficiency of smelting. 2 cl
Claims (1)
Использование: выплавка чугуна для отливок в вагранках с подогревом дутья. Цель: экономия топлива на процесс плавки и подогрев дутья при эффективности плавки на всем ее протяжении, Сущность изобретения: плавку начинают при максимальной температуре дутьевого воздуха, равной 450 - 550oС, которую поддерживают в течение 75 - 85% общего времени плавки, затем подачу газа на разогрев воздухоподогревателя прекращают и плавку заканчивают при температуре дутья в пределах 150 - 200oC, осуществляя подогрев за счет тепла, аккумулированного огнеупорной футеровкой воздухоподогревателя.Usage: smelting cast iron for castings in cupola furnaces with heated blast. Purpose: saving fuel on the melting process and heating the blast with the efficiency of melting throughout its entire length, Summary of the invention: melting is started at a maximum temperature of blast air equal to 450 - 550 o C, which is maintained for 75 - 85% of the total melting time, then supply gas for heating the air heater is stopped and the melting is completed at a blast temperature in the range of 150 - 200 o C, carrying out heating due to the heat accumulated by the refractory lining of the air heater.
RU95109586A1995-06-071995-06-07Method for smelting cast iron in cupola
RU2092569C1
(en)