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Calcium hydroxide (Ca(OH)₂), commonly known as slaked lime or hydrated lime. The raw material for the production of calcium hydroxide is limestone, which is a natural mineral material. The main component of limestone is calcium carbonate (CaCO₃), the most commonly used raw material for calcium hydroxide production. It is essential to select ores with high calcium carbonate content (usually ≥90%) and low impurity levels (such as magnesium, iron, silicon, etc.).
The Production Process of Calcium Hydroxide
| Inspection Item | Standard Requirement | Measured Result |
|---|---|---|
| Calcium Hydroxide (Ca(OH)₂) | ≥96% | 96.30% |
| Magnesium & Alkali Salts | ≤0.3% | 0.24% |
| Hydrochloric Acid Insoluble Matter | ≤0.1% | 0.06% |
| As | ≤2ppm | 0.15ppm |
| Fluoride | ≤50ppm | 7ppm |
| Pb | ≤2ppm | 0.18ppm |
| Heavy Metals | ≤10ppm | 3ppm |
| Loss on Drying | ≤1% | 0.20% |
| Fineness (300 Mesh) | 99.80% | 99.90% |
| Appearance | White Powder | Conforms |
The Application of Calcium Hydroxide
Calcium hydroxide (Ca (OH) ₂) is widely used in industries, agriculture, environmental protection, medicine, and other fields due to its alkalinity, stability, and reactivity.
Chemical Production
Neutralizer and Alkali Catalyst:
Neutralizes industrial wastewater containing sulfuric acid, phosphoric acid, etc., adjusting pH to neutral;
Catalyzes ester hydrolysis and condensation reactions in organic synthesis (e.g., glycerol production from epichlorohydrin).
Synthesis of Other Calcium Compounds: Reacts with sodium carbonate to produce calcium carbonate (CaCO₃), or with chlorine to prepare bleaching powder (Ca(ClO)₂).
Rubber and Plastic Industry: Acts as a filler and activator, improving the wear resistance and anti-aging properties of rubber products.
Environmental Protection and Water Treatment
Removal of Heavy Metal Ions: Reacts with Cu²⁺, Cd²⁺, Pb²⁺ and other ions in wastewater to form hydroxide precipitates
Neutralization of Acidic Wastewater: Neutralizes free acids in mine wastewater and electroplating wastewater, reducing COD (chemical oxygen demand).
Flue Gas Desulfurization
In coal-fired power plants, it reacts with SO₂ through the "calcium-based desulfurization method" to form calcium sulfite (CaSO₃), which is further oxidized to calcium sulfate (CaSO₄), reducing acid rain pollution
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Our mine in Hubei
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Packaging and Transportation
Packaging：We use plastic-woven bags and ton bags with excellent moisture-proof properties. For bulk transportation, professional protective measures are implemented to prevent the product from caking due to moisture during transportation and storage, ensuring optimal usability.
Transportation：Establishing long-term partnerships with many renowned international logistics enterprises, we offer various transportation methods, including full container loads and less-than-container loads. Customers can choose trade terms such as FOB, CIF, and EXW according to their needs, ensuring safe and timely delivery worldwide.
FAQ
Q: Are you a trading company or a factory?
A: We are a factory.We have two factories and a limestone mine.
Q: What are the advantages of your products?
A: Our products have high purity and minimal impurities. The highest purity of calcium hydroxide is 99.5%.
Q: What payment methods are supported?
A: T/T、L/C、D/P.
Q: Do you have any certificates?
A: Yes, we have ISO9001 and SGS certifications, etc.
Q: Do you provide free samples?
A: Yes.
