Product Overview

Hydrated Lime or slaked lime is another quality productfrom Ndola Lime. The product is used for pH control in mining metallurgy and other chemical industries. It is also used for soil stabilization road construction. Roads with a base stabilized with hydrated lime last longer and prove to be cheaper in the long run. Other uses for which hydrated lime is required include sugar refining, water purification, sewerage treatment, lime mortar, coal processing, bleach manufacturing sterilization, leather tanning and white washing among others.

Hydrated lime is packaged in 25kg bags and one tonne bulk bags on customer request. Ndola Lime has invested heavily in the hydration process which will result in increasing output to 15 tonnes per hour. The product is also produced to strict quality standards especially that it is used in food production.

Used in the chemical industries and road construction for soil stabilization. Other uses include: Water treatment, Sugar refining, Dehairing of hides and Lime washing.
Production

  • Calcium hydroxide or hydrated lime is produced by adding water to unslaked lime according to the reaction:

CaO + H2O = Ca(OH)2

  • During this process heat is released and the unslaked lime doubles its volume. Hydrated lime is also known as slaked lime and is very fine dry powder.

Various Uses of Hydrated Lime

Metallurgical Application

Hydrated Lime is used in PH control, which facilitates precipitation of cobalt hydroxide from the electrolyte in cobalt production.

Sugar Refinery

In the production of sugar from both cane and beets, the crude sugar juice (sucrose) is treated with lime. This forms insolubles that are filtered to remove phosphatic materials and organic acids. The resulting juice is further treated to achieve greater purity of sugar solution which is ultimately crystallised and packaged.

Water Treatment

Hydrated lime is mixed with other coagulant aids in water purification to achieve a clear suspension and serve as a filter aid. Lime also assists in removal of bacterial and temporary hardness due to the presence of bicarbonates.