Calcium Hydroxide Manufacturing Equipment
Calcium hydroxide,commonly known as hydrated lime or hydrated lime,is an inorganic compound widely used in chemical,environmental protection,construction,agriculture and other fields.The production process requires specialized equipment to react and convert quicklime(calcium oxide,CaO)with water,and the Calcium Hydroxide Manufacturing Equipment is the core equipment system to achieve this conversion.
Dry production line
Using solid calcium oxide as raw material,hydration reaction is achieved through mechanical stirring to generate powdered calcium hydroxide.Typical equipment includes:
Crushing system:Jaw crusher crushes large pieces of quicklime into 10-50mm particles,improving subsequent reaction efficiency.
Digestive system:The multi-stage stirring tank completes preliminary digestion through high-intensity stirring,while the secondary digester ensures complete reaction and generates uniformly sized hydrated lime powder.
Grading system:The powder selector uses centrifugal force and airflow sorting technology to control the product fineness between 100-600 mesh,meeting the needs of different industries.
Dust removal system:Pulse bag filter captures dust during the production process,ensuring that the emission concentration is below 10mg/m³and meets environmental standards.
With liquid water as the reaction medium,calcium hydroxide lotion is generated,which is suitable for the production of high-purity products.The core equipment includes:
Ash remover:the rotary or box type digester can fully mix calcium oxide and water through continuous mixing to generate lotion with a concentration of 20%-25%.
Slag removal system:The combination of rotary liquid slag remover and vibrating screen removes unreacted impurities and improves product purity to over 97%.
Raw material pretreatment
After being crushed by a jaw crusher,quicklime is transported to the storage bin by a bucket elevator and then quantitatively fed to the digester by a steady flow screw conveyor.This step requires controlling the crushing particle size and feeding speed to avoid insufficient digestion reaction.
In the digestive system,calcium oxide and water undergo a preliminary reaction under the action of stirring blades,releasing a large amount of heat.The secondary digester ensures complete conversion by extending the reaction time,producing intermediate products with a calcium hydroxide content of≥92%.
The digested material enters the powder selection machine through a screw conveyor,and different particle sizes of products are separated by adjusting the rotor speed and airflow speed.Qualified products are transported to the finished product warehouse through a bucket elevator and packaged in 25kg/bag or ton bag by an automatic packaging machine.
Effective energy-saving design
The Calcium Hydroxide Manufacturing Equipment adopts a dual axis stirring structure,which increases the stirring efficiency by 40%compared to a single axis and reduces unit energy consumption by 15%.For example,the HX-10 digester produced by Zhengzhou Shuguang Heavy Industry achieves a production capacity of 10 tons per hour by optimizing the angle and speed of the stirring blades,saving 20%energy compared to traditional equipment.
Fully enclosed environmental protection system
From raw material crushing to finished product packaging,the entire process is equipped with pulse dust collectors and negative pressure suction devices,with a dust collection rate of over 99.5%.The wet production line of Shandong Huihe Environmental Protection Equipment Co.,Ltd.uses a water film dust collector to treat and digest tail gas,ensuring that the SO₂emission concentration is below 35mg/m³.
Intelligent control system
Integrated PLC automatic control and sensor monitoring technology,real-time adjustment of water cement ratio,reaction temperature,and mixing speed.The intelligent production line of Luoyang Calcium Feng Industry and Trade can achieve unmanned operation,and the product qualification rate is stable at over 99%.
Agricultural market:Soil improvement requires calcium hydroxide particles with a particle size of 100-200 mesh,and the equipment needs to adjust the parameters of the powder selection machine to control the product's bulk density at 0.5-0.7 g/cm³.
The evolution history of Calcium Hydroxide Manufacturing Equipment from traditional manual operation to fully automated production reflects the transformation trajectory of China's manufacturing industry.In the future,with the advancement of the"dual carbon"goal,low-energy and zero emission green production lines will become mainstream.
1、Equipment classification
Calcium Hydroxide Manufacturing Equipment can be divided into two categories according to the process:dry production line and wet production line.The core difference lies in the reaction medium and product form:Dry production line
Using solid calcium oxide as raw material,hydration reaction is achieved through mechanical stirring to generate powdered calcium hydroxide.Typical equipment includes:
Crushing system:Jaw crusher crushes large pieces of quicklime into 10-50mm particles,improving subsequent reaction efficiency.
Digestive system:The multi-stage stirring tank completes preliminary digestion through high-intensity stirring,while the secondary digester ensures complete reaction and generates uniformly sized hydrated lime powder.
Grading system:The powder selector uses centrifugal force and airflow sorting technology to control the product fineness between 100-600 mesh,meeting the needs of different industries.
Dust removal system:Pulse bag filter captures dust during the production process,ensuring that the emission concentration is below 10mg/m³and meets environmental standards.
With liquid water as the reaction medium,calcium hydroxide lotion is generated,which is suitable for the production of high-purity products.The core equipment includes:
Ash remover:the rotary or box type digester can fully mix calcium oxide and water through continuous mixing to generate lotion with a concentration of 20%-25%.
Slag removal system:The combination of rotary liquid slag remover and vibrating screen removes unreacted impurities and improves product purity to over 97%.
Drying system:the drum dryer and spray drying tower work together to convert lotion into dry powder with water content≤1%for storage and transportation.
2、Process flow
The operation of Calcium Hydroxide Manufacturing Equipment needs to follow strict process flow,taking the dry production line as an example:Raw material pretreatment
After being crushed by a jaw crusher,quicklime is transported to the storage bin by a bucket elevator and then quantitatively fed to the digester by a steady flow screw conveyor.This step requires controlling the crushing particle size and feeding speed to avoid insufficient digestion reaction.
In the digestive system,calcium oxide and water undergo a preliminary reaction under the action of stirring blades,releasing a large amount of heat.The secondary digester ensures complete conversion by extending the reaction time,producing intermediate products with a calcium hydroxide content of≥92%.
The digested material enters the powder selection machine through a screw conveyor,and different particle sizes of products are separated by adjusting the rotor speed and airflow speed.Qualified products are transported to the finished product warehouse through a bucket elevator and packaged in 25kg/bag or ton bag by an automatic packaging machine.
3、Technical features
Modern Calcium Hydroxide Manufacturing Equipment presents three major technological trends:Effective energy-saving design
The Calcium Hydroxide Manufacturing Equipment adopts a dual axis stirring structure,which increases the stirring efficiency by 40%compared to a single axis and reduces unit energy consumption by 15%.For example,the HX-10 digester produced by Zhengzhou Shuguang Heavy Industry achieves a production capacity of 10 tons per hour by optimizing the angle and speed of the stirring blades,saving 20%energy compared to traditional equipment.
Fully enclosed environmental protection system
From raw material crushing to finished product packaging,the entire process is equipped with pulse dust collectors and negative pressure suction devices,with a dust collection rate of over 99.5%.The wet production line of Shandong Huihe Environmental Protection Equipment Co.,Ltd.uses a water film dust collector to treat and digest tail gas,ensuring that the SO₂emission concentration is below 35mg/m³.
Intelligent control system
Integrated PLC automatic control and sensor monitoring technology,real-time adjustment of water cement ratio,reaction temperature,and mixing speed.The intelligent production line of Luoyang Calcium Feng Industry and Trade can achieve unmanned operation,and the product qualification rate is stable at over 99%.
4、Industry Applications:Deep Adaptation to Multi Domain Needs
The customized design of Calcium Hydroxide Manufacturing Equipment enables it to serve a wide range of fields,including:Environmental protection industry:The desulfurization of power plants requires calcium hydroxide powder with a fineness of 325 mesh,and the equipment needs to be equipped with ultra-fine ring roller mills and classifiers to ensure that the specific surface area of the product is≥15m²/g.
Agricultural market:Soil improvement requires calcium hydroxide particles with a particle size of 100-200 mesh,and the equipment needs to adjust the parameters of the powder selection machine to control the product's bulk density at 0.5-0.7 g/cm³.
The evolution history of Calcium Hydroxide Manufacturing Equipment from traditional manual operation to fully automated production reflects the transformation trajectory of China's manufacturing industry.In the future,with the advancement of the"dual carbon"goal,low-energy and zero emission green production lines will become mainstream.
