Actually, the Chinese company invested one billion dollars in upgrading the facility, but carbon taxes and the high price of energy due to the cut off of Russian energy has made the plant uneconomical. In fact, the company claims that the plant loses 1 million dollars a day, and the British government act compels the Chinese company to continue running the plant at a loss, until a buyer can be found.

Blast furnaces and cement kilns need a rebuild after shutdown as the refractory lining can't tolerate the stresses from expansion/contraction during thermal cycling.