By Mike McNulty, Crain Staff (R&PN)
Akron, Ohio-The turbulent rumblings in the carbon black industry have slowed considerably from the levels of 2010 and early 2011.
But not entirely. Key players in the industry now are in expansion modes.
Rampant rumours, speculation and maneuvering on potential acquisitions ended when Marietta, Georgia-based Columbian Chemicals Co. was purchased by Aditya Birla Group of India in late June, and Evonik Industries A.G. sold its carbon black business, now called Orion Engineered Carbons, to New York-headquartered Rhone Capital L.L.C. and Jersey, England-based…