Kazakh tycoon sells Petropavlovsk stake to focus on battery minerals <!-- no image --> <div>* Roman Trotsenko becomes Petropavlovsk's biggest shareholder<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=JVgDenkWpY0:jmSkaz3_KQs:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=JVgDenkWpY0:jmSkaz3_KQs:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=JVgDenkWpY0:jmSkaz3_KQs:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=JVgDenkWpY0:jmSkaz3_KQs:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=JVgDenkWpY0:jmSkaz3_KQs:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/JVgDenkWpY0" height="1" width="1" alt=""></div> Posted by Reuters