Condition of successful removing the sulphur

___A shief engineer of «ТехноИнжениринг» company write: 
___In change from other deleted from metal of the admixtures, sulphur is contributed in open-hearth furnace by not only cast iron and scrap, but also fuel. In oxidation atmosphere to open-hearth furnace, sulphur from fuel moves over to SO2 and from it is absorbed of bath. Turning the sulphur from metal in slag possible to present in the manner of the following stage: 
—1.) [FeS] = (FeS) 
—2.) (FeS) + (CaO) = (CaS) + (FeO).
___Condition of successful removing the sulphur in slag under open-hearth smelting are: 
—1.) High maining of slag, reached additive in stove lime. 
—2.) The Lov\ concentration oxides ferric in shlag.
—3.) The Low concentration of the sulphur in shlag. 
___Last is reached of outswinging slag and aiming new or increase amount slag in stove. Besides, increase to velocities of the removing the sulphur from metal promote: 
—1.) The High temperature, promoting reduction to viscosity of shlag. 
—2.) Increase to surfaces of the section slag — a metal, reached mixing baths (basically forming bladder CO). 
___(P2O5) remains in slag at increasing of the temperature only at presence in it sufficient amount (CaO) for running reactions (3FeO*P2O5) + 4(CaO) = (4CaO*P2O5) + 3(FeO). Consequently, for successful of running process dephosphoratio necessary shaping the slag with raised contentses (FeO) and (CaO) and moderate temperatures. Practically, phosphorus try to delete from metal at period of the melting, when potting of cast iron with running down slag and in the first half of the period of the boiling, when metal not yet powerfully heated. A swinging of slag before beginning of the clean boiling reduces the possibility of the generation back phosphorus in metal by the end of melting trunks at increasing of the temperature of the bath. However under preliminary outtarting certain reconstruction of phosphorus can exist in consequence of introduction to metal element of outtarters (the manganese and silicon) with more high relationship to oxygen, than phosphorus. Under raised contents of phosphorus in the shicht, operations of outswinging of slag from stove happens to repeat two or three times.
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P.S.
___Уважаемый читатель!!! Уверен, что эта интересная информация будет очень полезна для Вас, избавив от множества проблем в повседневной жизни. В знак благодарности, прошу Вас поощрить скромного автора незначительной суммой денег.
___Конечно, Вы можете этого и не делать. В то же время подмечено, что в жизни есть баланс. Если сделать кому-то добро, то оно вернётся к Вам через определённое время в несколько большем количестве. А если сделать человеку зло, то оно возвращается в очень скором времени и значительно большим.
___Предлагаю сделать свой посильный вклад (сумму можно менять):
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