GB/T 37428-2019Methods of determination and calculation of thermal balance in electric arc furnace (English PDF)

3.1 Smelting cycle taptotaptime

The time from the completion of the tapping of the electric arc furnace to the completion of the tapping of the furnace.

3.2 Non-contact temperature measurement

Using the throat of the electric arc furnace wall as the measuring window of the infrared temperature measuring device, and using the electric arc furnace wall spray gun to spray the temperature measuring gas a raw supersonic gas jet that vents the soot containing gas in the furnace, penetrates the layer of foamed slag on the surface of the molten steel, and establishes between the molten steel and the sensor

The stable molten steel temperature characteristic signal transmission channel realizes continuous or intermittent on-line measurement of the molten steel temperature in the furnace of the electric arc furnace steelmaking process.

4.1 Heat Balance Test Benchmark

4.1.1 Reference temperature

The temperature at 1 m around the furnace is used as the reference temperature.

4.1.2 Heat Balance Test Range

Covers all facilities from the addition of raw materials to the production of molten steel, including scrap preheating equipment, electric arc furnace body and flue gas waste heat recovery equipment.

Wait.

4.1.3 Test conditions and frequency

The test was carried out under normal production conditions and tested continuously for 3 times, one test per test cycle.