BUZZ-Australia's Rio Tinto up; expects global steel demand to grow
** Iron ore miner Rio Tinto Ltd up as much as 1.9 pct
** Expects global steel demand to grow by 2.5 pct per year between now and 2030
** Says global iron ore demand will increase to 3 billion tonnes in 2030
** Adds non-Chinese steel demand expected to increase 65 pct by 2030
** Shares (Berlin: DI6.BE - news) have fallen 14.6 pct this year, as of Wednesday's close
(Reuters Messaging: aparajita.saxena.thomsonreuters.com@reuters.net)