Detailed explanation of the slaking process of lime: principle, process and application
Slaking Process of Lime is the process of reacting quicklime (calcium oxide, CaO) with water to produce slaked lime (calcium hydroxide, Ca(OH)₂). This process is a key link in many industries such as chemical, metallurgy, water treatment, papermaking, and building materials. Cronus is committed to providing efficient, energy-saving, and automated lime slaking systems to meet the needs of various industries for high-quality slaked lime.
What is the slaking process of lime?
Lime slaking refers to the process of producing slaked lime slurry by exothermic reaction between quicklime and water under appropriate conditions. The reaction formula is as follows:
CaO + H₂O → Ca(OH)₂ + heat
During this process, lime releases a lot of heat, so it is necessary to accurately control parameters such as water addition, temperature, and stirring speed to ensure that the reaction is sufficient, stable, and safe.
Basic process flow of Slaking Process of Lime
Lime slaking system usually includes the following steps:
Feeding system
Qualified quicklime particles are fed into the slaking machine through the feeding device.
Water addition reaction
Precisely control the ratio of water to lime to achieve the optimal reaction state. The reaction is violent and releases heat at this stage.
Slaking and stirring
Through continuous stirring, the reaction is uniform and slaking is complete to prevent agglomeration and local overheating.
Finished product discharge
Finally, a uniform lime slurry or dry slaking lime powder is obtained, which can be directly used in downstream processes.
Different types of lime slaking equipment
According to application requirements and production scale, lime slaking machines can be divided into the following types:
Continuous lime slaking system
Suitable for large-scale continuous production, with a high degree of automation, suitable for papermaking, steel and other industries.
Intermittent lime slaking tank
Suitable for small factories or occasions with strict batch quality requirements, flexible operation.
Multi-stage slaking machine
Gradual digestion is achieved through multi-stage reactions, suitable for the treatment of highly active lime.
Key factors affecting the effect of lime digestion
Lime quality: The purity, particle size and activity of lime directly determine the reaction efficiency.
Water addition ratio: Too little water is easy to sinter, and too much water will result in too low slurry concentration.
Reaction temperature: It is advisable to control it at 85-95℃.
Stirring intensity and time: Ensure uniform and complete reaction and prevent dead corners.
Typical application areas of lime digestion process
Water treatment industry: Used to neutralize acidic wastewater, adjust pH value, and remove heavy metals.
Metallurgical industry: Used for desulfurization, slag making and other processes in steelmaking.
Chemical industry: Used in the production processes of chlor-alkali, calcium carbide, bleaching powder, etc.
Building materials industry: Make lime sand bricks, aerated concrete, etc.
Cronus solution advantages
As a professional lime digestion equipment manufacturer, Cronus provides the following advantages:
✅ High efficiency and energy saving: Optimize structural design and improve thermal energy utilization.
✅ Intelligent control system: PLC+touch screen operation, support remote monitoring.
✅ Wear-resistant and anti-corrosion materials: key components are made of stainless steel or polymer materials to extend service life.
✅ Customized design: customized solutions according to customer on-site process requirements.
Why choose a high-quality lime digestion system?
Choosing high-performance lime digestion equipment not only improves production efficiency, but also reduces raw material waste, reduces maintenance costs, and effectively controls environmental emissions.
Cronus is committed to providing professional lime digestion technology solutions to global customers, improving industrial operation efficiency, and promoting green and sustainable development.
Contact us for solutions
If you are looking for a high-quality lime digester or want to upgrade an existing system, please contact us.
