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China Mica Scrap Suppliers - High-Quality Mica Factory Products for Insulation, Coatings, and Decorative Applications
Chemical Composition & Typical Analysis
| Chemical Component | Typical Content | Description |
|---|---|---|
| SiO2 | 42% - 48% | Main silicate component |
| Al2O3 | 28% - 38% | Main alumina component |
| K2O | 7% - 11% | Typical mica alkali component |
| Fe2O3 | 1% - 8% | Varies by mica type and source |
| MgO | 0.5% - 8% | Higher in phlogopite sources |
| CaO | ≤ 2% | Minor component |
| Na2O | ≤ 1.5% | Minor alkali component |
| Loss on Ignition | 1% - 5% | Depends on source and moisture |
Frequently Asked Questions (FAQ)
What are the primary chemical components in this material?
The main chemical components are Silicon Dioxide (SiO2) at 42% - 48% and Aluminum Oxide (Al2O3) at 28% - 38%, which together form the foundational aluminosilicate mineral matrix.
Why does the Iron Oxide (Fe2O3) content range from 1% to 8%?
Fe2O3 content varies based on the specific mica mineral group and geological source origin. Lower iron levels are common in standard muscovite, while higher concentrations are typical in dark or biotite-rich grades.
Which grade exhibits a higher Magnesium Oxide (MgO) concentration?
MgO ranges from 0.5% up to 8%, with the upper concentration ranges consistently found in phlogopite sources (magnesium mica).
What role do Potassium Oxide (K2O) and Sodium Oxide (Na2O) play?
K2O (7% - 11%) serves as the primary interlayer alkali component characteristic of potassium mica, whereas Na2O is a trace or minor alkali component limited to ≤ 1.5%.
What does Loss on Ignition (LOI) represent in the analysis?
Loss on Ignition (1% - 5%) measures the release of structural hydroxyl water, volatile content, and surface moisture during high-temperature thermal exposure.
Are Calcium Oxide (CaO) and Sodium Oxide (Na2O) major elements?
No, both are minor components in the mineral profile, with Calcium Oxide (CaO) maintaining ≤ 2% and Sodium Oxide (Na2O) maintaining ≤ 1.5%.
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