Hydrated Lime for Sugar Industry is a critical processing chemical used in sugar manufacturing to purify sugarcane juice, remove impurities, and improve final sugar quality. Without proper lime treatment, sugar production would suffer from low recovery, poor color, and processing inefficiencies.
Also known as Calcium Hydroxide (Ca(OH)₂), hydrated lime plays an essential role in juice clarification, pH adjustment, and removal of non-sugar impurities.
In India, where sugar production is one of the largest agro-based industries, consistent supply of high-purity hydrated lime is crucial for maintaining quality standards and production efficiency.
What is Hydrated Lime?
Hydrated Lime is produced by adding water to Quick Lime (Calcium Oxide).
Chemical Reaction:
CaO + H₂O → Ca(OH)₂
It is a fine white alkaline powder with strong neutralizing properties. These properties make it ideal for controlling acidity and precipitating impurities in sugarcane juice.
Role of Hydrated Lime in Sugar Manufacturing Process
Sugar manufacturing involves multiple stages:
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Cane crushing
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Juice extraction
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Juice clarification
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Evaporation
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Crystallization
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Centrifugation
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Drying and packaging
Hydrated lime is mainly used in the juice clarification stage, which is one of the most critical steps in sugar production.
Major Applications of Hydrated Lime in Sugar Industry
1. Juice Clarification
Raw sugarcane juice contains:
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Organic acids
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Proteins
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Coloring matter
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Suspended solids
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Colloidal impurities
Hydrated lime is added to the juice to:
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Neutralize natural acids
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Raise pH level
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Coagulate impurities
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Facilitate sedimentation
This results in clearer juice and improved sugar quality.
2. pH Adjustment
Maintaining proper pH is essential during sugar processing.
If pH is too low:
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Sugar inversion occurs
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Sucrose loss increases
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Recovery reduces
Hydrated lime helps maintain optimum pH (generally around 7 to 7.2) during clarification, preventing sucrose degradation.
3. Removal of Non-Sugar Impurities
Lime reacts with:
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Phosphates
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Organic acids
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Silica
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Proteins
These reactions form insoluble compounds that settle as mud, which can be removed through filtration.
This improves:
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Juice purity
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Color reduction
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Sugar crystallization efficiency
4. Sulphitation Process Support
In sulphitation plants, hydrated lime works with sulfur dioxide gas to improve bleaching and clarification efficiency.
It helps control:
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Color formation
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Chemical balance
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Final sugar brightness
5. Carbonation Process
In carbonation process sugar plants, lime is used to react with carbon dioxide forming calcium carbonate, which traps impurities and settles out.
This process enhances sugar purity and improves crystal quality.
Benefits of Using Hydrated Lime in Sugar Industry
Improved Sugar Recovery
Proper pH control prevents sucrose loss, increasing overall sugar recovery.
Better Juice Clarity
Efficient impurity removal results in cleaner juice and better downstream processing.
Improved Crystal Formation
Clear juice improves crystallization, producing better-quality sugar.
Reduced Processing Loss
Prevents sucrose inversion and decomposition.
Cost Efficiency
Hydrated lime is economical and widely available compared to alternative chemicals.
Quality Requirements for Sugar Industry Grade Hydrated Lime
Sugar mills require high-quality lime with:
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High Ca(OH)₂ purity
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Low silica content
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Low magnesium content
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Fine particle size
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High reactivity
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Minimal insoluble matter
Impure lime can cause:
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Poor clarification
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Increased mud formation
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Lower sugar recovery
Hydrated Lime vs Quick Lime in Sugar Industry
Quick Lime (CaO) is often used in some sugar plants and hydrated at site.
Hydrated Lime (Ca(OH)₂) is preferred because:
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Ready to use
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Controlled hydration
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Safer handling
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Uniform quality
Many modern sugar mills prefer hydrated lime for consistent performance.
Environmental Benefits
Hydrated lime helps:
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Neutralize acidic waste
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Improve effluent treatment
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Support environmental compliance
Sugar industry generates wastewater that requires neutralization before discharge. Lime plays a vital role in this treatment.
Challenges Without Proper Lime Quality
Using low-grade lime may result in:
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Incomplete clarification
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High mud generation
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Sugar color problems
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Reduced recovery
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Increased operational cost
Hence, selecting a reliable manufacturer is critical.
Why Choose Vigyan Lime for Sugar Industry Supply?
Vigyan Lime manufactures high-purity hydrated lime suitable for sugar mills across India.
With advanced manufacturing facilities and strict quality control, Vigyan Lime ensures:
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Consistent purity
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High reactivity
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Reliable supply
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Bulk delivery capability
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Competitive pricing
Manufacturing Units
Jodhpur & Nagaur (Rajasthan)
Udaipur (Rajasthan)
Haldwani (Uttarakhand)
Sataun (Himachal Pradesh)
These locations ensure smooth supply to major sugar-producing regions.
Industries Served
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Sugar mills
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Agro-processing plants
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Food-grade processing industries
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Distilleries
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Industrial processing units
Packaging Options
25 kg bags
50 kg bags
Bulk supply
Customized packaging
Storage and Handling
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Store in dry area
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Avoid moisture exposure
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Use sealed packaging
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Follow industrial safety measures
Frequently Asked Questions
What is the main use of hydrated lime in sugar industry?
It is used for juice clarification and pH control.
Does hydrated lime improve sugar recovery?
Yes, proper pH control reduces sucrose loss and increases recovery.
What purity level is required for sugar mills?
High Ca(OH)₂ purity with low impurities ensures best performance.
Is hydrated lime used in sulphitation process?
Yes, it supports bleaching and clarification.
Hydrated Lime for Sugar Industry is an essential processing chemical that ensures efficient juice clarification, impurity removal, and improved sugar recovery.
From pH control to carbonation and sulphitation processes, hydrated lime enhances sugar quality and plant efficiency. Choosing high-purity material from a trusted manufacturer ensures consistent and reliable results.
Vigyan Lime supplies premium-grade hydrated lime suitable for sugar mills across India.
For bulk orders and technical specifications, contact:
Head Office
G-37, Race Course
Dehradun, Uttarakhand 248001
Email: info@vigyanlime.com
Phone: +91-95685-01110, +91-95688-01110, +91-98370-55678
