98% High Purity Calcium Hydroxide High Whiteness Calcium Hydroxide Powder

Chemical Information:

Calcium hydroxid e

Hydrated lime, scientifically referred to as calcium hydroxide with the chemical formula Ca(OH)₂ and commonly known by its alternative name "slaked lime", is a versatile dry white powder that originates from quicklime (calcium oxide, CaO)—a product of high-temperature calcination of limestone. Unlike quicklime, which is highly reactive and prone to violent exothermic reactions when in contact with water, hydrated lime undergoes a controlled transformation process that results in a stable, free-flowing powder.

The production of hydrated lime (Ca(OH)₂) is a precision-driven process centered on the hydration of quicklime. It begins with selecting high-purity quicklime to ensure the final product meets industrial quality standards; this quicklime is then mixed with a carefully calibrated volume of water. The water-to-quicklime ratio is critical here: too little water would leave unreacted quicklime residues, compromising product purity, while excessive water would result in a wet, clumpy mixture that is difficult to dry and process. During this hydration reaction, quicklime (CaO) reacts with water (H₂O) to form calcium hydroxide (Ca(OH)₂) and releases a moderate amount of heat—far less intense than the uncontrolled reaction of quicklime with excess water. This controlled heat release allows for efficient processing without the risk of overheating or product degradation.

Core characteristics different from ordinary hydrated lime

·More Precise and Controllable Reaction

Due to its extremely low impurity content, high-purity hydrated lime undergoes "uninterrupted" reactions with target substances such as acidic materials and heavy metal ions. In contrast, impurities like iron and heavy metals in ordinary hydrated lime may react with reactants to form by-products (e.g., iron ions reacting with sulfides to generate iron sulfide precipitates, which affects the clarity of water after wastewater treatment). High-purity products, however, ensure that reactions only focus on core objectives such as "neutralization and precipitation." The reaction efficiency remains stable at over 95%, and the resulting products have high purity, making subsequent separation processes (e.g., precipitation filtration) more convenient and reducing the interference of by-products on the overall process.

·Stronger Stability and Compatibility

 The advantages of high-purity hydrated lime are particularly prominent during long-term storage or when mixed with   other high-purity raw materials: impurities such as calcium carbonate and calcium oxide in ordinary hydrated lime   may undergo slow reactions with changes in environmental temperature and humidity (e.g., calcium oxide absorbing   moisture and releasing heat, leading to local caking of the material). In contrast, high-purity products have minimal   impurities, so their performance barely degrades during storage, with a shelf life extended to 18 months (compared to   12 months for ordinary industrial-grade hydrated lime). Meanwhile, when mixed with high-purity acids (e.g.,   electronic-grade hydrochloric acid) or high-purity solvents (e.g., pharmaceutical-grade ethanol), they do not introduce   additional impurities, meeting the strict "raw material compatibility" requirements of precision manufacturing. For   instance, in the pharmaceutical industry, when used to adjust the pH value of liquid medicines, high-purity hydrated   lime must be free of toxic impurities such as heavy metals and arsenic to avoid compromising the safety of   pharmaceutical products.

·Better Environmental Friendliness

In high-end environmental applications (e.g., advanced purification of drinking water, wastewater treatment in the electronics industry), high-purity hydrated lime can prevent "secondary pollution": ordinary hydrated lime may leave trace amounts of heavy metals and iron ions in treated water, requiring additional adsorption and filtration processes for removal. In contrast, water treated with high-purity hydrated lime requires no subsequent advanced treatment. This not only simplifies the process but also reduces environmental protection costs.

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.