Flame guniting is based on the principle of interaction of the high-temperature refractory particles with the surface of the lining, the temperature of which is significantly lower than the temperature of the particles being applied and the gunited coating being formed. In such a process the temperature state of the coating--lining system satisfies the inequality to<~

The method of torch guniting is based on the creation of a high-temperature flame in the cavity of the converter in jet mixing and combustion of coke fines in a flow of oxygen. However, in such a method of combustion complete mixing of the components does not occur in the flame, as the result of which the guniting flow does not contain a stoichiometric mixture of fuel and oxygen.To provide complete combustion of the fuel, it is necessary to add an additional quantity of oxygen.Determination of the necessary quantity of oxygen to maintain rational guniting conditions in relation to the capacity of the guniting equipment, the chemical compositions of the guniting mixture and the coke fines, and the ratio of the initial velocities of the coke fines and oxygen is a complex and pressing problem.

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At present questions of the protection and repair of refractories in service in oxygen converters are inseparably related to the use of torch guniting.

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