Calcium hydroxide production plant

Calcium hydroxide,commonly known as hydrated lime or hydrated lime,is an indispensable basic chemical raw material in industrial production,widely used in fields such as sewage treatment,flue gas desulfurization,building materials,and chemical synthesis.The design and operational efficiency of its production equipment directly affect product quality,production costs,and environmental compliance.The key elements of the Calcium hydroxide production plant are as follows:
1、Technical principles
The production essence of calcium hydroxide is the digestion reaction between quicklime and water,and the chemical equation is:
1.Reaction characteristics and process requirements
Intense heat release:The reaction temperature can rise above 100℃,and the amount of water added and reaction rate need to be controlled to avoid equipment overheating.
Particle size control:The activity of calcium hydroxide depends on the adequacy of the digestion reaction,and particle distribution needs to be optimized through equipment design.

Impurity separation:Lime often contains impurities such as MgO and SiO₂,which need to be removed during the production process to ensure product purity.

2、Core equipment
The Calcium hydroxide production plant consists of four major modules:digestion system,aging system,separation system,and drying system.The selection of equipment for each module directly affects production efficiency and product quality.
1.Digestive system:key to reaction control
Type:Horizontal drum digestion machine,vertical stirring digestion machine;
Function:Achieve uniform mixing of quicklime and water,and control the reaction temperature.
Technical parameters:Taking the daily production of 50 tons as an example,a horizontal digestion machine with a diameter of 2.5m and a length of 8m is required,with a power of 75kW.
Water volume regulating valve:

By linking the flow meter with the PLC control system,the water cement ratio can be accurately adjusted to avoid incomplete reactions or clumping.

2.Aging system:
Function:To further mature the calcium hydroxide particles in a static state and increase the specific surface area.
Design points:The capacity should meet the aging time of 8-12 hours,equipped with a mixer to prevent sedimentation,and the tank body should be made of anti-corrosion materials.
The production equipment of calcium hydroxide has undergone a deep transformation from traditional extensive type to high-efficiency,environmentally friendly,and intelligent direction.For manufacturing enterprises,it is crucial to choose equipment suppliers with mature technology and comprehensive services.The turnkey projects they provide can significantly shorten the production cycle and reduce operational risks.