Major environmental uses of our limestone producys include: Flue gas desulphurisation; Water & waste treatment; Reducing the acidification of open waters and Gabions for erosion prevention
Limestone is used to neutralise and remove acids present in the flue gases of power generating facilities, and is used in flue gas desulphurisation (FGD) at coal fired power plants and municipal waste-to-energy plants.
Limestone is used in the treatment of waste and drinking water to remineralise excessively soft water (aggressive to metal pipes) and to adjust the pH of acidic waters. Longcliffe supplies water companies and other bodies with specially prepared limestone powder to neutralise water-bourne acidity.
The acidification of open waters, such as lakes, can have a major impact on ecological diversity and fish stocks. Lake liming with calcium carbonate is used to counteract problems of low acidity and helps to restore the balance of natural eco-systems.
The UK Environment Agency has used our limestone to rectify acidity levels in rivers and Longcliffe has also sponsored the Three Straths river improvement scheme in Aberdeenshire.
Gabions are a wire mesh cage filled with rock, used to protect channel banks and other sloping areas form erosion. Longcliffe produces screened random stone suitable for gabion fill.
Gabions are used in many situations including the stabilization of earth movement and erosion, river control, reservoirs, canal refurbishment, landscaping and retaining walls.