Fused-magnetite smelting blowout prevention system and method for electric-arc furnace
An electric arc furnace and fused magnesium technology, which is applied in the field of electric arc furnace smelting electric fused magnesium prevention spray furnace system, can solve problems such as molten slurry burn and energy loss, and achieve the effects of reducing energy consumption, prolonging life, and protecting personal safety.
Inactive Publication Date: 2014-07-02
DALIAN UNIV OF TECH +1
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Problems solved by technology
[0002] In the process of smelting fused magnesium in the electric arc furnace, due to the large amount of water vapor generated by the heating of the wet ore and the large amount of gas generated by the decomposition of the ore, the gas is not discharged smoothly. Or the gap between the furnace cover and the electrode is sprayed out, which is called a spray furnace. The sprayed molten slurry carries a large amount of heat and causes energy loss. If the personnel on site do not evade in time, they will be burned by the sprayed molten slurry
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[0027] Such as figure 1 As shown, the whole system of the electric arc furnace smelting fused magnesium prevention method includes a current transformer 2, a power transmitter 8, a differential pressure transmitter 7, a programmable controller 9, an alarm mechanism 10 and an electrode adjustment mechanism. The current transformer senses the current on the three water-cooled busbars 1 of the electric arc furnace, and the induced current is transmitted to the power transmitter 8 through the signal shielding wire 6, and the power transmitter converts the sensed current signal into a standard power signal and sends it to the programmable control The analog-to-digital conversion process is performed in the device 9; the differential pressure transmitter 7 is arranged on the furnace cover 4 to measure the gas pressure difference inside and outside the furnace cover, and convert the pressure difference into a standard electric quantity signal and pass the signal shielding wire 6 is ...
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The invention relates to a fused-magnetite smelting blowout prevention system and method for an electric-arc furnace. The fused-magnetite smelting blowout prevention system is structurally characterized in that current transformers are connected with three water cooling buses of the electric-arc furnace; currents induced by the current transformers are transmitted to an electrical quantity transducer through signal shield lines, and the electrical quantity transducer converts induced current signals into standard electrical quantity signals and transmits the standard electrical quantity signals to a programmable logic controller; a pressure difference transmitter is used for measuring the gas pressure difference between the interior of a furnace cover and the exterior of the furnace cover and transmitting signals to the programmable logic controller; the programmable logic controller analyzes the magnitude of the currents on the three water cooling buses of the electric-arc furnace and the gas pressure value in the electric-arc furnace to obtain the result of whether furnace blowout will happen, then separates the result into two paths of switching signals, transmits one path of switching signals to an electrode adjusting mechanism and transmits the other path of switching signals to an alarm mechanism. By the trial running of the fused-magnetite smelting blowout prevention system and method, furnace blowout accidents can be effectively prevented, and personal safety of workers on site can be protected. The fused-magnetite smelting blowout prevention system is simple in design structure and can be obtained by directly carrying out transformation on the basis of an original fused-magnetite smelting electric-arc furnace device.
Description
technical field [0001] The invention relates to an electric arc furnace smelting electric fused magnesium prevention furnace spraying system and method, and belongs to the related technical field of electric arc furnace smelting electric fused magnesium. Background technique [0002] In the process of smelting fused magnesium in the electric arc furnace, due to the large amount of water vapor generated by the heating of the wet ore and the large amount of gas generated by the decomposition of the ore, the gas is not discharged smoothly. Or the gap between the furnace cover and the electrode is sprayed out, which is called a spray furnace. The sprayed molten slurry carries a lot of heat and causes energy loss. If the personnel on site do not evade in time, they will be burned by the sprayed molten slurry. Therefore, how to prevent blasting from occurring when the electric arc furnace smelts fused magnesium, reduce heat loss, and prevent on-site personnel from being burned by...
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IPC IPC(8): F27B3/28
Inventor 付友崔军崔俊峰王宁会
Owner DALIAN UNIV OF TECH