hat
Sid sulfurique se youn nan pi enpòtan resous materyèl pou anpil endistri yo, ak sulfurique asid pwodiksyon yon nasyon endike l' ap kraze fòs endistriyèl. Metòd inivèsèl yon pwodwi sulfurique asid se pa pyrite torréfaction (pou jwenn SO2). Se pyrite ap tounen tankou nan sal D' on jan ak gaz dyosid souf nan tanperati de 800 ℃ ou dèyè 1000℃, apwè sa a dyosid souf nan gaz la torréfaction par pa yon chodyè gerizon dezè chalè ak pi lwen trete pou pwodwi sulfurique asid. Peryòd gerizon mwayèn envèstisman se nan zòn 1.5 ane.
eng
Sulfuric acid is one of the most important raw material for many industries, and a nation's sulfuric acid production indicates its industrial strength. One universal method of producing sulfuric acid is through pyrite roasting (to get SO2). Pyrite concentrates are transformed into solid oxides and gaseous sulfur dioxide at temperatures of 800 ℃ ~ 1000℃, after which the sulfur dioxide in the roasting gas is cooled down by a waste heat recovery boiler and further processed to produce sulfuric acid. The average investment recovery period is around 1.5 years.