He said the ring provided a necessary dialogue with brokers acting on its behalf that a screen cannot provide, along with increased liquidity and reduced volatility.
Market participants have until March 19 to respond to the discussion paper, then the LME will consider the responses before deciding how to act.
LME chief executive Matthew Chamberlain has said he wants to democratise the market, removing barriers to external investors trading by driving the market to electronic trades. He said many respondents to the discussion paper have been in favour of the plans.