Device and method for detecting reducibility of iron ore

Abstract

The invention provides a device and a method for detecting reducibility of iron ore. The device comprises an air supply system, a thermogravimetric scale, a tail gas treatment system, a temperature control system, a gas control system and a compute data processing system. In the test process, a test sample 5 is placed in a crucible; a contrastive empty crucible is placed at the other end, and temperature is raised according to a predetermined temperature raising system. The method comprises the following steps: detecting by using a differential thermal scale device mainly based on a thermogravimetry theory; collecting temperature data and quality data in real time in the reaction process; and recording a thermogravimetric curve in the test where weight changes along with the temperature. The device provided by the invention is convenient to operate, small in volume and good in safety because harmful gases produced in the reduction process are discharged after being treated by the tail gas treatment system.

Description

technical field [0001] The invention relates to a device and a method for testing iron ore, more specifically to a device and a method for measuring the reducibility of iron ore. Background technique [0002] Reduction performance indicates the ease of removing iron-bound oxygen from iron ore with a reducing agent. The calculation of the degree of reduction is based on the state of ferric iron (that is, it is assumed that all the iron in the iron ore is Fe 2 o 3 The form exists, and these Fe 2 o 3 The oxygen in it is counted as 100%), and the degree of deoxygenation achieved after reduction for a certain period of time is expressed in mass percent. The reducibility of iron ore is usually studied by the national standard GB / T13241-91 "Measurement method for reducibility of iron ore". The experimental operation is complicated, the amount of iron ore required is large, and the human factors in the test process are greatly affected. [0003] CN201464316 discloses a novel i...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art that use the national standard GB / T13241-91 method to study iron ore reducibility, the test process is complicated, requires a large amount of iron ore, and produces more harmful gases during the test process, the present invention provides an iron ore reduction It is a device and method for property determination. The device is compact in layout, simple in operation and easy to master. The amount of sample and gas required for the test is far less than that of the national standard GB / T13241-91

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