Lime milk

Lime milk is a liquid solution made by mixing hydrated lime (calcium hydroxide, Ca(OH)2) with water. It is also commonly referred to as milk of lime or limewater. Lime milk is an important chemical with a wide range of applications in various industries, including water treatment, construction, and food processing.

Production

The production of lime milk involves the careful mixing of hydrated lime powder with water in specific proportions. This process can be adjusted to produce lime milk of different concentrations, depending on the intended use. The quality of the water and the purity of the lime are critical factors that affect the properties of the final product.

Applications

Water Treatment

In water treatment processes, lime milk is used for pH adjustment, water softening, and the removal of impurities such as phosphates and heavy metals from water. Its alkaline nature allows it to neutralize acidic water, while its calcium content aids in the precipitation of impurities.

Construction

In the construction industry, lime milk is used as a binder in mortar and plaster, providing durability and protection against moisture. It is also used in the production of bricks and other building materials.

Food Processing

In food processing, lime milk is used in the clarification of sugar cane juice and the processing of corn for the production of corn syrup and other corn-based products. It acts as a clarifying agent by precipitating impurities.

Environmental Applications

Lime milk is also used in environmental applications, such as the treatment of flue gases to remove sulfur dioxide and other harmful emissions from industrial processes.

Safety and Handling

Handling lime milk requires caution due to its alkaline nature, which can cause skin and eye irritation. Protective clothing, gloves, and eye protection are recommended when working with lime milk.

Storage

Lime milk should be stored in a cool, dry place away from direct sunlight. It is prone to settling and separation over time, so regular agitation or mixing is recommended to maintain its homogeneity.

Environmental Impact

The use of lime milk in various applications has a relatively low environmental impact, especially when compared to more hazardous chemicals. Its natural derivation and the fact that it can be produced with minimal energy consumption make it a preferred choice in environmentally sensitive applications.