Header image showing a silo with steel spiral staircases

Milk of lime plants: 
Hydrated lime plant and Lime slaking plant

Milk of lime plants for the preparation of quicklime and hydrated lime

We are manufacturers of milk of lime plants and master both common processes for the production of milk of lime based on hydrated lime or quicklime.
Our hydrated lime plants are used for lime consumption quantities of approx. 50 - 800 tonnes per year. For higher consumption quantities, we recommend using one of our lime slaking plants based on white fine lime (CaO). The ratio of hydrated lime to water can be calculated volumetrically or gravimetrically.

An overview of the possible applications of our plants in the various treatment processes can be found here.

Hydrated lime plant

The hydrated lime plant is a system for producing milk of lime from hydrated lime (Ca(OH)2) and water. Our plants can be designed for batch or continuous operation.

The lime hydrate is fed from the lime silo into the lime milk preparation tank using a combination of rotary valve and lime screw conveyor. It is mixed with water under constant stirring and thus processed into milk of lime. The desired concentration of the lime milk suspension is defined using dosing units for water and hydrated lime powder. 
 

Lime slaking plant

Our lime slaking plants offer a system for producing milk of lime from quicklime and water. The plant can be designed for batch or continuous operation. Our lime slaking plants are used economically from a lime consumption of approx. 500 tonnes per year.

The desired concentration of the lime milk suspension is defined using dosing units for water (H2O) and unslaked lime (calcium oxide, quicklime). In the lime slaking tank, quicklime is hydrated with water and processed in an exothermic reaction to form a lime milk suspension. The slaking concentration is 20 - 25% by weight, depending on the lime product used.

The milk of lime is diluted to the required concentration in the downstream storage tank. The additional benefit of our plant is a wet absorber, which permanently extracts the vapours produced during hydration from both tanks. It cleans these in a water mist and releases purified air into the open air.
 

With volumetric dosing, the ratio between hydrated lime / quicklime and water is controlled by the speed of the rotary valve and the current flow rate of the preparation water.

With gravimetric dosing, the amount of water required for a new batch is first weighed into the batching tank, followed by hydrated lime. In our plants, the preparation is carried out in batches. The milk of lime produced in this exact concentration is then drained into a storage tank from which ready-to-use milk of lime is continuously removed. The advantage of gravimetric dosing is the exact dosing accuracy and a constant, easily adjustable milk of lime concentration.

We customise your hydrated lime or lime slaking plant according to the following criteria:

  • Consumption of hydrated lime / quicklime
  •  Storage period for hydrated lime / quicklime
  •  Lime milk concentration
  •  Dosing accuracy
  •  Buffer volume of milk of lime
  •  Redundancy specification of the customer