Calcium carbonate is one of the most important materials used in the manufacture of paints and putty. However, its quality does not depend solely on its purity; its performance is also strongly influenced by particle size and its distribution within the final product.

The more precisely particle size is controlled, the better the resulting properties can be in terms of:

• Smoothness
• Opacity and hiding power
• Thickness
• Filling pores and surface openings
• The final appearance of paints and putty

For this reason, Al-Seraj for Calcium Carbonate Manufacturing places great importance on:

• Particle size analysis
• Providing ultra-fine, high-quality products
• Offering a variety of particle size grades to meet the requirements of different industrial applications

First: What Is Particle Size in Calcium Carbonate?

Particle size refers to the size of the fine particles that make up calcium carbonate, while particle size distribution describes the different proportions of each particle size within a sample.

Particle size analysis is an important test that helps determine the fineness and uniformity of the product and assess its suitability for use in paints, putty, and other industries.

At Al-Seraj, particular attention is given to the accuracy of particle size distribution in order to produce ultra-fine products with properties suitable for industrial applications.

Second: What Do D50, D90, and D97 Mean?

When analyzing particle size, several important terms are used, most notably D50, D90, and D97. These indicators are used to describe the particle size distribution of calcium carbonate.

D50	The particle size at which 50% of the particles are smaller and 50% are larger. It is one of the main indicators used to determine the median particle size and evaluate the degree of fineness.
D90	The particle size at which 90% of the particles are smaller, while 10% are larger. It helps identify the distribution of larger particles and assess product uniformity.
D97	The particle size at which 97% of the particles are smaller, while approximately 3% are larger. It provides an indication of the upper particle-size limit within the sample.

Third: A Range of Measurements in Particle Size Analysis from D03 to D97

Al-Seraj does not rely on a single measurement to evaluate product quality. Instead, it provides a range of measurements within particle size analysis, from D03 to D97.

These analyses provide an accurate picture of the particle size distribution within calcium carbonate, ranging from very fine particles to larger particle sizes.

This approach makes it possible to select the appropriate grade of calcium carbonate according to the intended application and required formulation, particularly in the manufacture of paints and putty, where precise and uniform particle distribution is essential.

Fourth: The Effect of Particle Size on the Fineness and Purity of Calcium Carbonate

When calcium carbonate is used in the manufacture of paints and putty, fineness and purity become key factors affecting the quality of the final product. Both are closely related to the accuracy of particle size control.

Al-Seraj provides ultra-fine, impurity-free calcium carbonate, helping manufacturers achieve better results in applications that require high fineness and surface uniformity.

Controlling particle size distribution also contributes to improving the performance of calcium carbonate within different formulations, whether in terms of coverage, thickness, or final appearance.

Fifth: Al-Seraj Golden Spidaj – The King of Putty and the Role of Particle Size in Its Quality

Al-Seraj Golden Spidaj is one of the distinguished products offered by Al-Seraj for Calcium Carbonate Manufacturing. It has become known as the “King of Putty” due to the distinctive properties it offers in putty and paint applications.

It has a range of characteristics that make it a suitable choice for many putty and paint applications:

1. Thickness That Helps Reduce the Number of Coats Required

One of the most notable characteristics of Al-Seraj Golden Spidaj is its ability to provide good thickness to putty, helping achieve efficient surface coverage.

This property contributes to reducing the number of coats required to achieve the desired final result, which can help save the time and effort required for surface preparation.

2. High Opacity and Hiding Power in Putty

One of the most important properties sought by paint manufacturers is the ability to achieve high opacity and hiding power in putty.

When used in suitable formulations, Al-Seraj Golden Spidaj contributes to achieving this property, helping improve surface coverage and achieve a more uniform appearance.

3. Filling Surface Pores and Openings

Al-Seraj Golden Spidaj helps fill surface pores and openings, an important property when preparing walls and surfaces before applying paint layers.

The better the putty’s ability to fill pores and openings, the smoother and more uniform the surface becomes, contributing to a better final paint finish.

4. Providing an Attractive Gloss

In addition to thickness, opacity, and the ability to fill pores and openings, Al-Seraj Golden Spidaj contributes to achieving an attractive gloss and uniform final appearance when used in suitable formulations.

This is where precise particle size and particle size distribution become particularly important, as they can have a direct effect on the surface texture and final appearance.

Sixth: Why Is Particle Size Analysis Important?

Particle size analysis is not merely a laboratory test; it is a fundamental factor in determining the properties and performance of calcium carbonate within the final product.

Through a range of measurements included in particle size analysis, from D03 to D97, particle distribution can be evaluated more comprehensively, helping determine the suitability of the product for the intended application.

These measurements also help control the quality of ultra-fine products and achieve more consistent specifications from one production batch to another.

Seventh: Proven Quality in Particle Size Accuracy and Numerous Experience Certificates

Al-Seraj for Calcium Carbonate Manufacturing relies on experience, quality, and precise analysis in the production of its products.

The company has obtained numerous experience certificates, and the quality of its products has been externally verified as complying with international standard specifications, in addition to being proven in local markets.

This reflects the confidence that Al-Seraj products have gained through their use in different markets and their ability to meet customers’ technical and industrial requirements.

Frequently Asked Questions

1. What is the difference between D50, D90, and D97 in particle size measurement?

D50 represents the median particle size, meaning that 50% of the particles are smaller and 50% are larger. D90 indicates the particle size below which 90% of the particles fall, while D97 indicates the particle size below which 97% of the particles fall. As the percentage increases, the measurement gets closer to the upper end of the particle size distribution in the sample.

2. Why is particle size important in the paint and putty industry?

Particle size and its distribution directly affect product smoothness, putty opacity and hiding power, thickness, the ability of putty to fill pores and openings, as well as the final appearance and gloss.

3. What are the D03 to D97 measurements in particle size analysis?

They are a series of measurements used to analyze particle size distribution more accurately, starting from very fine particles at D03 and extending to larger particles at D97. Together, they provide a comprehensive picture of the particle size distribution within calcium carbonate.

4. What distinguishes Al-Seraj Golden Spidaj from other putty products?

It is characterized by good thickness that helps reduce the number of coats required, high opacity and hiding power in putty, the ability to fill surface pores and openings, as well as providing an attractive gloss and uniform final appearance.

5. Are Al-Seraj products certified according to international standards?

Yes. Al-Seraj has obtained numerous experience certificates, and the quality of its products has been externally verified as complying with international standard specifications, in addition to being proven in local markets.

Conclusion

Al-Seraj for Calcium Carbonate Manufacturing strives to provide high-quality products that meet the needs of various industries, with a strong focus on particle size accuracy, purity, and fineness.

By providing ultra-fine, impurity-free products and conducting a range of particle size measurements from D03 to D97, the company works to supply calcium carbonate according to industrial application requirements.

Al-Seraj Golden Spidaj – the King of Putty is one of the company’s leading products, distinguished by its thickness, its ability to help reduce the number of coats required, its high opacity and hiding power in putty, its contribution to filling surface pores and openings, and its ability to provide an attractive gloss.

Al-Seraj for Calcium Carbonate Manufacturing – Proven quality, ultra-fine products, and precise particle size analysis from D03 to D97.