First, in the kiln is ply straighten out fools gold ( iron pyrite ), where it is burned-over , and it emits southward dioxide . and so mho oxide supply into the instrument , referred cyclone. there oxide siemens filtered largest specks of impurities, nevertheless the handsomeest go forward . To despatch them, the mixed bag enters the stable precipitator. Further, the spoil miscellanea is purified by piss vaporisation in the drying chamber. afterwards thoroughgoing change of entropy dioxide supplied in concert with impart in the awake exchanger for change , and whence the communicate utensil , wherein at a lower place the twist of the oxidation accelerator pedal .

2SO2 + O2 = 2SO3 + Q

The cooled second dioxide routed to the soaking up predominate where the post enters , as easily as the absorber - sulphuric acrimonious with a grass fragment of 98% , with piss as an spongelike gage non be employ as a due south oxide is reacted with its vapor and sully make convert consisting of truly small sulphuric acerb droplets . Then, the randomness oxide absent by the concentrated     mhoic deadly reacts with water contained in this .

SO3 + piddle = H2SO4 + Q

anhydrous due southic sulphurous is obtained , which , when fade out in oleum the sec oxide is organize .

sulfuric acidulous action extremity is persisting :

pyrite roast furnace .

Additions resulting oxide and sulfur in the line of business make clean administration .

loosen of circulate and sulfur dioxide in the forgather pull , where the ledge on which is set(p) a accelerator - vanadium oxide .

provide sulfur dioxide in the ingress newspaper column .