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Quicklime costs $120 per ton. Lime is used in large quantities as a building and engineering material. The rocks and minerals from which these materials are derived, typically limestone or chalk, are composed primarily of calcium carbonate. They may be cut, crushed or pulverized and chemically altered.
: In 2009, an estimated 15.0 million tons (16.5 million short tons) of quicklime and. hydrate was produced (excluding commercial hydrators) at a value of about $1.6 billion. At yearend, there were 32. companies producing lime, which included 22 companies with commercial sales and 10 companies that produced. lime strictly for internal use (for example, sugar companies). These companies had 75 primary lime plants (plants. operating lime kilns) in 29 States and Puerto Rico.