Device And Method For Measuring Softening And Melting Performances Of Iron Ore In Blast Furnace Under Reducing Condition

A device for measuring the softening and melting performances of iron ore in blast furnace under a reducing condition, comprising a high temperature furnace, a gas supply system, a loading system and a weighing system, wherein

• the high temperature furnace is provided therein with a hearth;
• the hearth is provided therein with a cylindrical graphite crucible (with an open upper end) and a temperature acquisition device for acquiring temperature data of the high temperature furnace;
• the gas supply system is used to inject a reducing gas comprising N2, H2, CO2 and CO into the hearth;
• the gas supply system comprises a gas storage device and a gas mixing device communicating with the gas storage device through a pipe;
• the gas storage device is used to store the components of the reducing gas separately and control flow rates of the components of the reducing gas according to the temperature of the high temperature furnace acquired by the temperature acquisition device;
• the gas mixing device is used to fully mix the components of the reducing gas and communicate with the hearth of the high temperature furnace through a pipe;
• the loading system comprises a loading rod, and an upper end of the loading rod extends out of the high temperature furnace;
• a portion of the upper end of the loading rod extending out of the high temperature furnace is fixedly connected with a loading device and a displacement sensor from bottom to top;
• the loading device drives the loading rod to move vertically according to the temperature of the high temperature furnace acquired by the temperature acquisition device;
• a lower end surface of the loading rod is provided with a loading head for applying a pressure to iron ore specimen in the graphite crucible;
• the loading head vertically moves in the graphite crucible to change the pressure applied to the iron ore specimen when the loading rod moves vertically;
• the weighing system comprises an electronic balance, a controller and a weight sensor;
• the electronic balance is placed in a sealed box at a lower part of the high temperature furnace to send a weight change to an external computer via the weight sensor;
• the controller is used to calibrate the electronic balance.