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High Calcium Oxide Content & Stronger Activity: The product has a calcium oxide content of ≥95% (higher purity specifications can be customized as needed), featuring high purity and excellent activity. In rubber production, it can quickly react with trace moisture in rubber to achieve efficient water absorption and drying, avoiding defects such as bubbles and pinholes caused by moisture, and significantly enhancing the compactness and mechanical properties of rubber products.
Extremely Low Magnesium Content, Ensuring Stable Quality: With a magnesium content of ≤1.0%, far below the standard for ordinary calcium oxide in the industry, it can effectively avoid problems like uneven vulcanization and insufficient cross-linking caused by magnesium impurities during rubber vulcanization. This ensures consistent performance indicators (e.g., hardness, elasticity, wear resistance) of rubber products and reduces the defective rate in production.
Uniform Particle Size & Excellent Dispersibility: Adopting advanced crushing and sieving technology, the particle size can be customized according to rubber production process requirements (regular 325 mesh). The fine and uniform particles can be quickly and evenly dispersed in the rubber matrix without additional dispersion costs, preventing local performance deviations due to particle agglomeration.
Low Impurity Content & Environmentally Compliant: Strictly controlling the content of harmful impurities such as sulfur and iron, it meets the environmental production standards of the rubber industry. No harmful gases are emitted during use, which not only ensures the safety of the production environment but also guarantees that the final rubber products meet relevant environmental requirements, making it suitable for the production of various high-end rubber products.
| Index Name | Index Value | Testing Standard |
| Calcium Oxide (CaO) Content | ≥95% | GB/T 19281 - 2014 |
| Magnesium Oxide (MgO) Content | ≤1.0% | GB/T 19281 - 2014 |
| Moisture (H₂O) Content | ≤1.0% | GB/T 19281 - 2014 |
| Acid - Insoluble Matter Content | ≤3.0% | GB/T 19281 - 2014 |
| Particle Size (325 Mesh) | Pass Rate ≥95% | GB/T 19281 - 2014 |
| Activity (4mol/L HCl, 30min) | ≥300ml | Industry Standard |
Calcium oxide mainly serves as a water absorbent and activator in rubber production. Its quality directly affects the quality and production stability of rubber products, with calcium and magnesium contents being the core key indicators:
1. Improve Product Qualification Rate: The strong water absorption from high calcium content can completely remove moisture from rubber raw materials, eliminating bubbles, cracks, and other defects at the source. Low magnesium content avoids vulcanization abnormalities, ensuring consistent performance of each batch of products and greatly reducing the defective rate.
2. Enhance Rubber Mechanical Properties: Calcium oxide with excellent activity can form a more stable bond with rubber molecules, improving the tensile strength, tear strength, and wear resistance of rubber products, and extending their service life. It is particularly suitable for high-performance rubber products such as tires and seals.
3. Optimize Production Process & Reduce Costs: Its good dispersibility shortens mixing time and improves production efficiency. Low impurity content eliminates the need for additional impurity removers, reducing raw material loss and production costs, while also reducing equipment wear and extending equipment service life.
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Certifications
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.
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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: How do you control quality?
A: Our factory is equipped with professional technicians to control the quality, and the inspectors conduct a sample test every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other third party inspection.
Q: Do you provide free samples?
A: Yes.
Q: Do you have any certifications?
A: Yes, we have ISO9001 and SGS. Meanwhile, we can provide MSDS, marine transportation identification reports, etc.
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.
