At Dhansri Minerals, we prioritize the highest standards of quality control and assurance in the production of calcium carbonate (CaCO₃). Our commitment to excellence is reflected in our stringent quality management processes that ensure every batch of CaCO₃ meets the specified technical and purity standards.

 Quality Control Measures

1. Raw Material Selection: We begin with the careful selection of high-purity calcium carbonate stone from our own stockyard. Each batch of raw material undergoes rigorous testing for composition and impurities.

2. In-Process Monitoring: During the production process, continuous monitoring and control are applied to maintain consistency. Key parameters such as particle size distribution, moisture content, and purity levels are regularly checked.

3. Advanced Machinery: Our state-of-the-art equipment, including hammer crushers, hammer mills, ball mills, belt-weighers, and vibrating pan feeders, is calibrated and maintained to ensure optimal performance and precision in processing.

 Quality Assurance Protocols

1. Laboratory Testing: Samples from each production batch are subjected to comprehensive laboratory testing. This includes:

   - Chemical Analysis: Determining the CaCO₃ content and detecting any trace impurities.

   - Physical Properties: Assessing parameters like particle size distribution using laser diffraction methods, specific surface area, and bulk density.

   - Moisture Content: Measured using thermogravimetric analysis to ensure it remains within acceptable limits.

 2. Certification and Compliance: Our products comply with national and international standards. Each batch is certified to ensure it meets or exceeds industry requirements.

 3. Documentation and Traceability: We maintain detailed records of all production and testing activities. This traceability ensures that any quality issues can be promptly identified and addressed.

 Quality Parameters

- Purity: Super 85% CaCO₃ content, 2nd Super 80% – 85% CaCO₃ content, Normal 80% CaCO₃ content.

- Particle Size Distribution: Customized as per client requirements, typically ranging from 2 / 5 / 8 / 10 / 15 / 20 Microns.

- Whiteness: High degree of whiteness, Super 98%, 2nd Super 95 -96%, Normal 92 – 93%.

- Moisture Content: Less than 0.2%.

- Solubility in water (g/100g H2O): 0.0013(25° C)

- Melting Point (°C): 825

Quality Approval Process

1. Initial Testing: Post-production, samples are taken for preliminary testing in our in-house laboratory.

2. Third-Party Verification: Periodically, batches are sent to external labs for independent verification.

3. Final Approval: Once all tests are completed and results are within the specified parameters, the batch is approved for dispatch.

Ensuring Quality

- Regular Audits: Internal and external audits of our processes and systems.

- Employee Training: Continuous training programs for staff to stay updated with the latest quality control techniques.

- Customer Feedback: Actively seeking and incorporating feedback to improve our processes.