Industrial Grade High Purity Calcium Hydroxide Lime Powder for Calcium Hypochlorite

Chemical Information:

• English Name: Calcium hydroxide, also known as slaked lime or hydrated lime

• CAS Number: 1305-62-0

• Appearance: White powdered solid

• Packaging: Available in 25KG bags Or 1000KG Jumbo bags

• Melting Point: 580°C

• Boiling Point: 2850°C

• Solubility: Slightly soluble in water, insoluble in alcohol, soluble in ammonium salts and glycerin

Calcium hydroxide---An essential core raw material for the preparation of calcium hypochlorite

In the production system of industrial bleaching agents and disinfectants, calcium hypochlorite has become a widely used core product (such as the active ingredient in bleaching powder) due to its strong oxidizing properties and stability. Tracing back to its preparation process, calcium hydroxide is not an optional raw material but an indispensable key substance that enables the entire reaction to occur and stabilizes the product. It is not only a core participant in the reaction but also the foundation for ensuring preparation efficiency and product quality, with its importance running through the entire process of calcium hypochlorite preparation.

The "Dual Roles" of Calcium Hydroxide---Reaction Participant and Product Stabilizer

In the preparation process of calcium hypochlorite, the role of calcium hydroxide is not limited to the reaction stage but also extends to the stable storage of the product, forming a dual support of "reaction participation + product protection".

On one hand, as a reaction raw material, the dosage and form of calcium hydroxide directly affect the reaction efficiency. In industrial production, calcium hydroxide needs to be processed into lime milk (rather than dry powder). The dispersibility of this suspension can increase the contact area with chlorine gas, avoiding insufficient local reaction or side reactions caused by excessive chlorine gas (such as the formation of ineffective impurities like calcium chlorate). Meanwhile, the concentration of lime milk must be strictly controlled (usually a suspension of a certain ratio). Excessively high concentration will make the reaction system viscous and hinder gas circulation; excessively low concentration will reduce the product concentration and increase subsequent separation costs. Moreover, the purity of calcium hydroxide directly determines the product purity of calcium hypochlorite.

On the other hand, after the reaction is completed, a small amount of excess calcium hydroxide is intentionally retained in the product to stabilize calcium hypochlorite. Calcium hypochlorite itself is easily affected by environmental factors such as moisture and carbon dioxide, undergoing decomposition reactions and losing effectiveness. The reaction equation is: Ca(ClO)₂ + CO₂ + H₂O = CaCO₃↓ + 2HClO, and HClO further decomposes into HCl and O₂, resulting in the loss of the product's bleaching and disinfection activity. The excess calcium hydroxide can neutralize acidic substances that may be generated in the system, inhibit the decomposition of hypochlorous acid, and isolate part of the carbon dioxide from contacting calcium hypochlorite, significantly extending the product's shelf life.

Technical Highlights

The Applications of Calcium Hydroxide :

Calcium hydroxide has a wide range of uses, mainly focusing on industries such as industry, construction, environmental protection, and agriculture. Industrially, it is a key raw material for producing calcium hypochlorite (a raw material for bleaching powder), and is also used in papermaking bleaching and neutralizing acidic substances in wastewater treatment. In the construction field, it is often used as a component of lime milk and mortar for wall masonry and plastering. In agriculture, it can adjust soil pH and prevent plant diseases. Additionally, it is applied in scenarios such as food processing (e.g., sugar decolorization) and phosphorus removal in sewage treatment.

Qualification Certifications

Production Workshop

Our Advantages

We have our own mine in Hubei Province, which endows us with the following advantages:

• Stable Raw Material Supply: Owning our own mine ensures a stable supply of raw materials for calcified substances. This helps to avoid production interruptions caused by issues such as fluctuations in the raw material market and supply shortages. It guarantees the smooth progress of production plans and maintains a stable product output, enabling us to better meet customer needs and enhance customer satisfaction.

• Controllable Raw Material Quality: Our company can directly manage and monitor the mining process of the mine, and strictly control the quality of raw materials. We are able to select appropriate ore grades and qualities according to production requirements, ensuring that the mined ore meets the high standards of our products. This provides a solid foundation for producing high-quality calcified substance products and helps to enhance the market competitiveness of our products.

• Cost Advantage: Obtaining raw materials from our own mine reduces intermediate procurement links and lowers procurement costs. Moreover, in the long run, a stable raw material supply also enables our company to take the initiative in cost control and avoid the risk of cost increases due to fluctuations in raw material prices, thereby improving the company's economic benefits and profitability.

• 
  

FAQ

Q: Are you a trading company or a factory?
A: We are a factory.

Q: What are your main products?
A: Calcium oxide, Calcium hydroxide, Light calcium carbonate, Heavy calcium carbonate，Nano calcium carbonate

Q: May I get a sample before placing order?
A:  Yes, sample are available. Sample are for free and you just need to bear the freight.

Q: Where is your factory?
A: Our factory is located in Changshu, Jiangsu Province, welcome to visit us at any time.

Q: Is there any possible to use my appointed lable or package?

A: Yes, If need, we would like to use lable or package according to your requirement.

Q: How do I contact you to purchase a product?
A: Below is our contact information, please feel free to contact us at any time.