UPDATE 2-Uralkali no plans to return to Belarus potash pact
* Uralkali's CEO arrested in Minsk on Aug. 26
* Uralkali says H1 net revenue down 29 pct y-on-y
* May get $1.4 billion in loans for refinancing
* Shares up, shed some earlier gains
By Polina Devitt and Alessandra Prentice
MOSCOW, Sept 10 (Reuters) - Russia's Uralkali, the world's largest potash miner by output, said on Tuesday it had no plans to return to a trade alliance with Belarus and dismissed speculation about changes to its shareholder structure.
Uralkali, which missed analysts' forecasts with a 53 percent fall in first-half profit, is at the centre of a potash row between Russia and Belarus, triggered when the Russian company quit a joint sales cartel in July - rocking the global potash industry.
Since then Belarus has arrested Uralkali's boss and fuelled speculation that the company's main shareholder, billionaire Suleiman Kerimov may have to sell his 21.75 percent stake.
"We don't have any additional information from our big shareholders concerning potential changes in the shareholder structure," Viktor Belyakov, Uralkali's chief financial officer and acting chief executive, said on a conference call. Continued...