The company is struggling to implement a new strategy of selling directly to end-users.
Johan Lesley Viljoen has been hired as chief operating officer as part of an executive reshuffle.
Production of iron ore rose 5 percent to 22.8 million tonnes for the six months ended 30 June.
But the group's platinum output slumped, hit by a strike at its South African operations.
Anglo's most profitable division plans to expand output but problems are constraining production.
Around 100,000 mineworkers from Amplats, Implats and Lonmin platinum mines are on strike.