BUZZ-Australia's Rio Tinto up; CFO's analyst forum stokes hopes of better cash flows
** Rio Tinto (LSE: RIO.L - news) shares gain 1.8 pct
** CFO Chris Lynch's analyst forum stokes hope of better cash flows - analysts
** Citi attended a roundtable analyst forum hosted by the CFO and says iron ore operations have further potential to reduce costs
** Adds capex for projects coming up for approval, like South of Embley in bauxite and Silvergrass in iron ore, should fall significantly
** Citi rates Rio Tinto as "buy" and has a target price of A$58 per share (RM (LSE: RM.L - news) : abhishek.vishnoi.thomsonreuters.com@reuters.net)