Reducibility in metallurgy is the property of ore mass, pellets or sinter to give oxygen to the gaseous reducing agent bound by iron atoms.
Reducibility is measured either as the rate of loss of mass fraction of oxygen (% / min), or as a percentage of the mass of oxygen over a fixed period of time. Typically, this value is called the degree of recovery [ R ]. High reducibility of ore allows to reduce the period of its stay in the blast furnace , which can significantly increase the speed of smelting and reduces the needs of coke for smelting pig iron [1] .
The industrial method for measuring reducibility is regulated by GOST 21707-76 and consists in continuous monitoring of the change in the mass of the sample material during reduction with hydrogen at a temperature of 800 ± 10 ° C [2] .
See also
- Iron ore
Notes
- ↑ Processes for metal production Information portal "Engineering, mechanics and metallurgy"
- ↑ G.V. Korshikov. Recoverability // Encyclopedic Dictionary of Metallurgy. - Lipetsk: Lipetsk publishing house of the State Printing Committee of the Russian Federation, 1998. - P. 78-80. - ISBN 5-06-217-229-244.