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Hydrated lime

 

Hydrated Lime (Calcium Hydroxide) is a highly versatile and essential product used in construction, environmental management, agriculture, and industrial applications. This premium-grade, fine powder is produced by adding water to quicklime and offers excellent pH adjustment, soil stabilization, and pollutant neutralization properties.

  • Soil Stabilization: Enhances the strength and stability of soil for road construction, foundation work, and other civil engineering applications.
  • Water Treatment: Efficiently purifies water by neutralizing impurities and adjusting pH levels, essential for both drinking water and wastewater treatment.
  • Agricultural Enhancement: Raises soil pH, improving fertility, and promotes healthy crop growth. It also acts as an eco-friendly pesticide.
  • Flue Gas Treatment: Plays a key role in reducing sulfur dioxide emissions, promoting cleaner air and environmental sustainability.

Consider pairing Hydrated Lime with our Quicklime for a more robust approach to industrial processes or Lime Mortar for a durable solution in construction. Enhance your water treatment systems with our Activated Carbon for optimal purification.

Upgrade to our Premium Hydrated Lime with enhanced purity levels for specialized industrial or agricultural applications, ensuring better performance and longer-lasting results. Additionally, explore our Lime Slurry Solutions for easier application in large-scale projects or continuous processes.

Whether you’re looking to improve your infrastructure, enhance agricultural productivity, or maintain environmental standards, our Hydrated Lime is the ideal choice for high-quality and sustainable solutions.

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Applications
  1. Construction Industry:
    • Soil Stabilization: Hydrated lime is used to improve the strength and durability of soil, making it ideal for road construction and foundation stabilization.
    • Cement Manufacturing: It acts as a key ingredient in producing cement and mortar, providing improved workability and durability.
    • Plastering and Lime Putty: Used for making plaster and lime-based paints due to its excellent adhesion and smooth finish.
  2. Water Treatment:
    • Water Purification: Hydrated lime is used to adjust the pH levels in water treatment plants, aiding in the removal of impurities and contaminants through coagulation and flocculation.
    • Wastewater Treatment: It helps neutralize acidic wastewater and treat heavy metals, making water safe for discharge or reuse.
  3. Agriculture:
    • Soil pH Adjustment: Hydrated lime is widely used to raise the pH of acidic soils, improving plant growth and enhancing nutrient availability.
    • Pest Control: It is used as an organic pesticide in agriculture to control certain pests and diseases.
  4. Industrial Applications:
    • Flue Gas Treatment: Hydrated lime is used in the scrubbing of industrial gases to reduce sulfur dioxide emissions and other pollutants.
    • Chemical Manufacturing: It plays a role in the production of various chemicals, including calcium carbide and caustic soda.
    • Steel Industry: Hydrated lime is employed in the purification of molten metal, removing impurities and assisting in slag formation.
  5. Environmental Remediation:
    • Neutralization of Acidic Waste: It is used to neutralize acidic wastes from industrial processes and prevent environmental contamination.
    • Landfill Stabilization: Hydrated lime helps stabilize and treat landfill leachate, reducing harmful environmental impact.
  6. Food and Beverage Industry:
    • Sugar Refining: It is used in sugar processing to remove impurities from raw sugar during the refining process.
    • Fruit Processing: Hydrated lime helps in the preservation of fruits and vegetables by maintaining their firmness and texture.
Hydrated lime is a multi-purpose product, essential for improving processes across a variety of sectors, making it a key component in environmental and industrial solutions.
  • Construction and Civil Engineering:
    • Soil Stabilization: Hydrated lime is used to enhance the properties of soil, improving its strength and stability in road construction and foundation works.
    • Cement and Mortar Production: It is an important component in the production of cement and mortar, helping to increase their durability and workability.
    • Plastering and Lime Paints: Hydrated lime is used in making plaster, lime-based paints, and coatings, providing smooth, durable finish
      • Water Purification: Hydrated lime is used to adjust the pH of water, aiding in the removal of impurities, heavy metals, and organic contaminants.
      • Wastewater Treatment: It neutralizes acidic wastewater and facilitates the removal of suspended solids, improving water quality for safe discharge or reuse.
    2. Agriculture:
      • Soil pH Adjustment: Hydrated lime is applied to raise the pH of acidic soils, improving plant growth and enhancing nutrient uptake.
      • Pest Control: It acts as an eco-friendly pesticide, helping control pests, fungi, and diseases in agricultural settings.
    3. Industrial Applications:
      • Flue Gas Treatment: Hydrated lime is used in the scrubbing of industrial emissions, removing sulfur dioxide and other pollutants from flue gases.
      • Chemical Manufacturing: It is a key component in the production of various chemicals, including calcium carbide, caustic soda, and hydrogen peroxide.
      • Steel Manufacturing: Used in the purification of molten metal by removing impurities and assisting in slag formation.
    4. Environmental Remediation:
      • Acid Neutralization: Hydrated lime is used to neutralize acidic waste, such as from industrial processes, helping to reduce environmental harm.
      • Landfill Leachate Treatment: It helps to neutralize and treat leachate from landfills, preventing contamination of nearby water sources.
    5. Food and Beverage Industry:
      • Sugar Refining: Hydrated lime is used in the sugar industry to purify raw sugar during the refining process.
      • Fruit and Vegetable Preservation: It helps preserve the texture and firmness of fruits and vegetables by maintaining their pH.
    6. Mining and Metallurgy:
      • Mineral Processing: Hydrated lime is used in the extraction and processing of various metals, particularly in flotation and acid neutralization during mining operations.
      • Smelting: It plays a role in purifying metal ores and assisting in slag removal during the smelting process.
    7. Health and Hygiene:
      • Disinfectant: Hydrated lime has mild antiseptic properties and can be used in sanitation, particularly for controlling odors and as a disinfectant in certain settings.
  • Hydrated lime is a multi-functional material that plays a crucial role in a wide range of industries, from environmental management to construction and agriculture.
Benefits of Hydrated Lime (Calcium Hydroxide) Using Power Words:
  1. Soil Enhancement:
    • Transforms acidic soils into fertile, nutrient-rich ground by raising pH levels, promoting robust plant growth and vibrant crop yields.
  2. Environmental Protection:
    • Purifies water by removing contaminants and neutralizing pollutants, ensuring cleaner, safer water for consumption and ecosystem health.
    • Reduces harmful emissions by scrubbing flue gases, lowering sulfur dioxide and contributing to a greener, cleaner environment.
  3. Construction Excellence:
    • Strengthens and stabilizes soil for durable and long-lasting infrastructure in roads, foundations, and building projects.
    • Boosts the durability and performance of cement and mortar, ensuring solid, reliable construction.
  4. Cost-Effective Solution:
    • Provides an economical, efficient solution for numerous industrial applications, helping businesses save on material costs without compromising on quality.
  5. Health & Hygiene:
    • Sanitizes and disinfects effectively, controlling odors and promoting a healthier environment in waste management and agriculture.
    • Eco-friendly and mildly antiseptic, offering a natural, non-toxic alternative to harsh chemicals in pest control and sanitation.
  6. Agricultural Advantage:
    • Boosts soil fertility and enhances crop productivity, ensuring higher yields and healthier harvests.
    • Acts as a natural pesticide, safeguarding crops from pests and diseases, fostering a sustainable, chemical-free agricultural practice.
  7. Versatile Industrial Power:
    • Unlocks a range of industrial applications, from water treatment to chemical production, making it a versatile, essential material for a variety of processes.
  8. Sustainable and Green:
    • Eco-conscious and sustainable, hydrated lime is a natural product that aligns with today’s green initiatives, offering environmentally friendly solutions without compromise.
Hydrated lime is a powerful, versatile, and eco-friendly solution, providing exceptional benefits across multiple industries while fostering sustainability and efficiency.
The usage rate of hydrated lime varies depending on the application and specific requirements of the project. Here are some general guidelines for different uses:
  1. Soil Stabilization:
    • Typically, 2–8% by weight of hydrated lime is added to soil, depending on the soil type and desired results (higher rates for clayey or highly acidic soils).
  2. Water Treatment:
    • 1–3% by weight of hydrated lime is commonly used to adjust the pH of water or to treat industrial effluent and municipal wastewater.
    • In drinking water treatment, the rate may range from 30–80 mg/L depending on the water’s alkalinity and pH levels.
  3. Agriculture:
    • For soil pH adjustment, a typical application rate is around 1–5 tons per acre depending on soil conditions and pH level.
    • For pest control, the usage can be 1–2 tons per hectare in certain crops.
  4. Flue Gas Treatment (Industrial):
    • Hydrated lime is generally applied at 1–5% of the flue gas volume, depending on the concentration of sulfur dioxide and other pollutants to be neutralized.
  5. Construction (Cement & Mortar):
    • For cement production, hydrated lime is typically used at rates of 5–15% by weight of the total mixture.
    • In mortar formulations, hydrated lime is used at about 10–25% by weight of the cement content to improve workability, flexibility, and adhesion.
  6. Food Industry:
    • In food processing (such as sugar refining or fruit preservation), hydrated lime is used in small quantities, typically ranging from 0.5% to 2% of the total product.
  7. Waste Treatment:
    • In the treatment of sludge and landfill leachate, the application rate of hydrated lime can range from 1–5% by weight to stabilize the material and reduce odor.
These are approximate usage rates, and exact quantities may vary depending on factors like the specific requirements of the application, the properties of the materials being treated, and environmental regulations. Always consult product guidelines or a technical expert to determine the ideal rate for your specific use.
Cautions for Handling Hydrated Lime (Calcium Hydroxide):
  1. Avoid Direct Contact with Skin and Eyes:
    • Hydrated lime can cause severe skin irritation or burns upon direct contact. Always wear protective gloves and safety goggles when handling it.
    • Eye contact can result in serious irritation or injury. If eye contact occurs, immediately flush with plenty of water and seek medical attention.
  2. Respiratory Protection:
    • Inhalation of hydrated lime dust can cause respiratory irritation or more severe effects if inhaled in large amounts. It is important to use a dust mask or respirator when working with hydrated lime in dusty environments.
    • Ensure adequate ventilation in areas where hydrated lime is being applied or mixed.
  3. Avoid Ingestion:
    • Do not ingest hydrated lime. Ingestion may cause severe digestive irritation or burns. If swallowed, do not induce vomiting, and seek immediate medical attention.
  4. Storage:
    • Store hydrated lime in a cool, dry place, away from moisture and water, as it may react with moisture, forming heat and caustic solutions.
    • Keep the material in airtight containers to avoid contamination from air and moisture.
  5. Handling with Care:
    • Use hydrated lime with caution in areas with flammable materials. While hydrated lime itself is not flammable, it may cause exothermic reactions with water, potentially leading to a risk of fire or explosion in some situations.
  6. Environmental Protection:
    • Prevent spillage of hydrated lime into the environment, especially into water sources, as it can alter pH levels and harm aquatic life.
    • If a large amount of hydrated lime is spilled, it should be cleaned up promptly and disposed of in accordance with local environmental regulations.
  7. First Aid Measures:
    • Skin Contact: Wash the affected area immediately with plenty of water and soap. If irritation persists, seek medical attention.
    • Eye Contact: Flush eyes with water for at least 15 minutes and seek medical help immediately.
    • Inhalation: Move to fresh air immediately. If symptoms persist, seek medical attention.
    • Ingestion: Rinse the mouth with water, and seek immediate medical assistance.
Always follow proper safety protocols and use personal protective equipment when working with hydrated lime to minimize the risks associated with its handling.
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Frequently asked questions

What is hydrated lime?
Hydrated lime, also known as calcium hydroxide (Ca(OH)₂), is a fine, dry powder produced by adding water to quicklime (calcium oxide). It is widely used in construction, water treatment, agriculture, and various industrial processes due to its versatility and chemical reactivity.
Hydrated lime is used in several industries:
  • Construction: For soil stabilization, cement production, and mortar.
  • Water Treatment: To adjust pH and purify water.
  • Agriculture: For soil pH adjustment and pest control.
  • Environmental Protection: In flue gas treatment and wastewater treatment.
  • Industrial Applications: In chemical production and flue gas scrubbing.
While hydrated lime is a useful and safe material when handled properly, it can cause skin and eye irritation. Protective equipment, such as gloves, goggles, and dust masks, should be worn during handling. Inhalation of dust or direct contact with skin or eyes can result in burns or irritation. Always follow safety guidelines to minimize risks.
The primary difference is in their chemical composition:
  • Quicklime (calcium oxide, CaO) is produced by heating limestone to high temperatures (calcination) and reacts exothermically with water to form hydrated lime.
  • Hydrated lime (calcium hydroxide, Ca(OH)₂) is the product of adding water to quicklime, making it safer to handle and more suitable for many industrial applications.
Hydrated lime offers several environmental benefits:
  • Water treatment: It helps remove impurities and neutralize acidic water, improving water quality.
  • Flue gas treatment: Hydrated lime is used to reduce sulfur dioxide emissions in industrial processes, contributing to cleaner air and reducing acid rain.
  • Wastewater treatment: It assists in treating and neutralizing industrial wastewater and sludge.
In agriculture, hydrated lime is primarily used for:
  • Soil pH adjustment: Raising the pH of acidic soils, promoting healthier crops and better nutrient availability.
  • Pest control: It acts as an organic pesticide, controlling certain pests and diseases without the use of harmful chemicals.

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