Burnt and Slaked Products

Quicklime – calcium oxide – is produced by heating limestone to high temperatures in a process called calcination. The burning process transforms limestone into a white, solid material with a high melting point and basic properties. Burnt lime is used, for example, in the production of iron and steel, in cellulose manufacturing, and in the purification of water and flue gases. Burnt lime is also used in the mining industry.

Slaked Lime – calcium hydroxide – is formed when burnt lime reacts with water. The reaction produces a white powder or paste depending on the amount of water added. The slaked lime has a strongly basic nature and is highly soluble in water. Slaked lime is used in water and flue gas purification and in the building materials industry. It is also essential for water purification and for raising the pH of acidic soil.

Burnt Dolomite plays a key role in industry, particularly in the steel and energy sectors. The material is produced, like burnt lime, through calcination, but with the inclusion of magnesium oxide in the raw material, it gives the product different properties. Dolomite is generally considered more versatile, especially in applications that require refractory materials.

Mesa Mesa is a by-product from sulfate production that occurs during the preparation of so-called white liquor.

Mesa can be recovered by re-burning it into burnt lime and then reusing it in the pulp mills.