Mar 04, 2020· Likecement,limeis produced by heating limestone (although, solely) at 900° C in a kiln, but is subsequently used in numerous industries besidescementandclinker. Of thelimeproduced in the United States and European Union, 30–40% is used by the steel industry as a fluxing agent, 14% is used in other industries (sugar refining, glass, paper, precipitated calcium carbonate), 10–20% is used in …