The author investigated the properties of the metallurgical coke manufactured in our country, from point of its relative re ctivity for carbon dioxide.
For determination of the relative reactivity, a definit volume of coke crushed into pieces of a uniform size, was taken in the reaction tube and heated at constant temperature of 1000°C, passing through the current of carbon dioxide at constant velocity and the gas leaving the tube was analysed every 10 or 20 mins.
The reactivity of coke was measured by the amount of carbon monoxide in the gas.
To measure the relative reactivity of the coke substance, coke was crushed as fine as possible and heated in the sealed reaction tube with carbon dioxide at constant temperature of 900°C. After 7 hours heating the gas in the reaction tube was taken out and analysed, The reactivity of coke substancewas measured by the amount of carbon monoxide in the gas.
The equilibrium between coke, carbon monoxide and carbon dioxide at high temperatures above 900°C, was practically determined by the method of reaction velocity between coke and carbondioxie and by heating coke & carbondioxide in the sealed reaction tube. Finally, evaporation test of water saturated in coke was done to see the permeability of coke for gases. A piece of coke of a definite size saturated with water, was hanged from an arm of a balance in the bottle containing calcium chloride. The apparatus was kept at constant temperature, weighing at proper intervals, obtained the evaporation curve.
The author investigated the physical and metallurgical properties of coke from the results of these experiments.

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