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Report saving strategy of high frequency furnace
A high frequency furnace, working principle and power link:
High frequency electric furnace is a coil which generates a magnetic field, the molten material is subjected to a magnetic field from outside to inside fever causes the melting material.
High frequency furnace electric energy consumption link mainly has four aspects:
1 melting raw materials
2 hot metal insulation
3 cold start
4 lining sintering
The principle of high frequency furnace
The main problem two, around the energy-saving point:
After a statistical survey with 10 year 5-8 month, one ton hot metal consumption is 817KWH, which molten iron thermal insulation material 729KWH, 56KWH, 26KWH cold lining sinteringfurnace, 6KWH. Melting raw materials and molten metal holdingthese two links consumption accounted for 96% of the most powerlink.
1 found no residual metal in the furnace under the condition of the material, under the situation of the same power of fullfurnace used time of about 70 minutes, beyond the design offeeding time.
2 that do not pay more attention to the relationship betweendensity is proportional to the speed of melting and chargeinduction furnace production operation process, the furnace rawspace gap is too large, resulting in melting speed increased power consumption phenomenon.
3 feeding machine often occurs the phenomenon of clamping material, and processing card material prolong the materialtime.
4 through careful observation, every card material position incharging car outlet baffle at.
The 5 operator in the soup hot metal work not grasping accurateweight, average every package than the prescribed weight 20kilograms, resulting in unnecessary waste.
6 because the field instrument set unreasonable, longer operation time of each package, the stove fire to pouring over12 minutes, prolonging the holding time of molten iron in the.
The implementation effect
High frequency furnace
The goal and effect, plans to solve the energy problem after the realization of the
The goal for the end of 10 tons of hot metal will power the realization theory of value, from 817KWH to 600KWH.
Two, methods and means to improve the:
1, in the high frequency furnace retained a ton of hot metalcase charging melting, melting time from 70 minutes to 61 minutes, one ton of hot metal consumption is reduced from 817KWH to 723KWH.
Pig iron and scrap steel block small first add 2, operation,finally adding recycled scrap, make the furnace feedstock gapsmall density increases, the melting time, lower power consumption, melt time from 61 minutes to 59 minutes, one tonof hot metal consumption is reduced from 723KWH to 702KWH.
3, the charging car outlet baffle demolition, finally put an end to the card material, melt time reduced from 59 minutes to50 minutes, one ton of hot metal consumption is reduced from 702KWH to 609KWH.
4, at the scene to observe the position operator increases theiron weight display a big screen, so the operator to controleach ladle weight, make one ton hot metal consumption is reduced from 609KWH to 596KWH.
5, as the holding time after hot metal melting further reduced,changed the original molten iron sampling sequence of operations, the previous 15 minutes before removing impurities from raw metal surface of the test block component detection,improve the first sampling of melting of raw iron, hot metal on the surface of impurities in waiting for the results of at the same time, clear, so each furnace can save time 5 minutes per ton iron, hot metal consumption is reduced from 596KWH to 594KWH.
Adjustment of 6, the station equipment location, each ladlecrane is reduced to an action, a decrease of 2 meters walking distance, operation time is reduced by 2 minutes; the operatorreduces an action, a decrease of 2 meters walking distance,operation time is reduced by 1 minutes. The single ton hot metal consumption is reduced from 594KWH to 592KWH.
The actual effect of three, eventually reaching the:
One ton of hot metal consumption dropped to 592KWH, to achieve the target. The average per ton of hot metal consumption fell 28%. Can save electricity 2530000 yuan per year, the productionefficiency is increased by 25%.
Industry to promote value
1, improve the way of saving energy and reducing consumption,namely from production of man, machine, material, method, every detail of the ring.
2, high frequency furnace molten iron retention part soupprocess, in order to reduce the burden of the clearance volume,shortening charging and melting time, so as to achieve the purpose of energy saving.
Tags: high frequency induction heating equipment