In the converter steel-making processing , a lot of steel-slag in melting state is produced when furnance is smelting . Traditional slag-stopping technology used the slag-stopping ball to come out steel . Because of the ball go adrift to the steel-tapping hole , at the same time , as the plug is very viscosity , slag-stopping ball cant come out to the hole . Or it cant blank off the steel-tapping hole effectively while the liquid steel drains away . The efficiency of the slag-stopping ball is less than 70% . Using the slag stopping plug to come out steel , it efficiency can raise 96% , plug level less than 40mm . This new technology reduced the energy consumption , reduced temperature loss of the molten steel , increased the steel-making operation security . The volume and density of slag-stopping plug according to the user requirements to operate . At the same time , the length and the size of the defor med steel bars of Guide pole , according to the user drawing to operate .