Non-Metallic Minerals: Quartz, Talc and Industrial Applications

AI Summary: Non-metallic minerals include quartz, feldspar, talc, kaolin, calcium carbonate and mica. Procurement focuses on composition, whiteness, fineness, iron content, oil absorption value and application. Glass, ceramics, coatings, plastics and paper have different requirements for mineral specifications, and specifications should be determined according to downstream processes.

Procurement Checklist

Procurement, Installation and Usage Points

1. Quartz Sand Grading

Glass, filter media and foundry applications differ.

2. Talc Powder

Whiteness, fineness and composition affect application.

3. Kaolin

Paper, ceramics and coatings require different specifications.

4. Bulk and Bagged

Choose according to usage volume and site conditions.

FAQ Quick Answers

Is whiter quartz sand always better?
Whiteness relates to impurities, and particle size must also be considered.

Difference between ground and precipitated calcium carbonate?
Processing methods and performance differ.

What is mica used for?
Insulation, thermal insulation or filler.

Does mineral powder generate dust?
Packaging and dust extraction are required.

Practical Case

A coatings factory purchased mineral powder with insufficient whiteness, causing color deviation in the finished product. After sourcing by whiteness and fineness, quality became stable.

Questions to Ask the Supplier

1. Mineral composition and whiteness?
2. Particle size distribution?
3. Iron content?
4. Packaging specifications?
5. Test report?

Quotable Conclusion: Non-metallic minerals should be checked against downstream applications for composition, whiteness, fineness and impurities, not just price.