Abstract: A method for measuring the softening and melting performances of iron ore in blast furnace is disclosed, which is implemented by a device including a high temperature furnace, gas supply system, a loading system and a weighing system. The method includes: step 1: the dried coke and iron ore specimen are placed in the graphite crucible in a specified way; step 2: the graphite crucible is placed in the high temperature furnace, and N2 is continuously fed into the high temperature furnace to reach an airtightness requirement; step 3: a vacuum pump is used to extract mixed gas in a hearth of the high temperature furnace and heating process is started; step 4: both the composition of mixed gas and pressure imposed on the iron ore are controlled according to the designed temperature variation; step 5: data are acquired to calculate.

Abstract: The present invention discloses a device and method for measuring the softening and melting performances of iron ore in blast furnace under a reducing condition. The device includes a high temperature furnace, a gas supply system, a loading system and a weighing system, where the high temperature furnace is provided with a hearth, which is provided therein with a graphite crucible and a temperature acquisition device; the gas supply system is used to inject a reducing gas including N2, H2, CO2 and CO into the hearth; the gas supply system includes a gas storage device and a gas mixing device; the loading system includes a loading rod; an upper end of the loading rod is connected with a loading device and a displacement sensor, and a lower end of the loading rod is provided with a loading head; the weighing system is used to weigh a droplet and iron ore specimen.