Device and method for assessing reduction degree of iron ore in a mixed reducing atmosphere

A device for assessing reduction degree of iron ore in a mixed reducing atmosphere, comprising:

• a hermetic heating device configured to heat a reaction sample;
• an air intake device connected to the hermetic heating device, and configured to introduce an inert gas and/or a reducing gas into the hermetic heating device;
• a gas analysis device configured to analyze a part of exhaust gas produced by the hermetic heating device;
• a thermogravimetric analysis device configured to analyze a weight change of the hermetic heating device caused by reduction;
• a gas convection buffer section disposed between the hermetic heating device and the thermogravimetric analysis device, and configured to mitigate disturbance caused by gas reflux on measurement of the thermogravimetric analysis device;
• and
• a gas split device disposed between the hermetic heating device and the gas analysis device, and configured to split the exhaust gas produced by the hermetic heating device, thereby maintaining the part of exhaust gas introduced into the gas analysis device at a constant flow rate or a constant flow,
• wherein a reduction degree of iron ore of the reaction sample in different reducing atmospheres is respectively assessed according to a measured value of the gas analysis device and a measured value of the thermogravimetric analysis device.