We unleash your business potential by maximize the business innovation.
Send EmailNepheline Syenite, Albite, Na-feldspar, Orthoclase, K-feldspar, 12188-68-6 ,12136-45-7
| Parameter | Description |
|---|---|
| Product Name | Nepheline Syenite |
| Mineral Type | Alkaline igneous rock (feldspathoid-bearing) |
| Form | Micronized powder |
| Particle Size | -300 µm, -63 µm |
| Color | White to light gray |
| Packaging | 1300 kg Big Bag |
| CAS Number (Mixture) | No specific CAS number |
| Component Minerals | Albite (Na-feldspar): 12188-68-6; Orthoclase (K-feldspar): 12136-45-7 |
CHEMICAL DESCRIPTION:
Nepheline Syenite is an igneous rock composed primarily of alkali feldspar (orthoclase, albite) and nepheline. It is an important raw material used as a flux, fluxing agent, and vitrifying agent in the ceramic industry. It is known for its low melting point, high alkali oxide content, and ability to enhance glaze brightness. It has higher alumina and alkali content compared to feldspar group minerals.
| Stage | Description |
|---|---|
| 1. Quarry | Blasting with dynamite |
| 2. Primary Crushing | Jaw crusher → 5-10 cm |
| 3. Secondary Crushing | Hammer crusher → <1 cm |
| 4. Magnetic Separation | Removal of free iron particles with high-intensity magnetic separators |
| 5. Grinding | Micronized grinding (-300 µm, -63 µm) |
| 6. Classification | Classification according to desired particle size |
| 7. Packaging | 1300 kg Big Bag packaging |
| Property | Value |
|---|---|
| Appearance | White to light gray powder |
| Hardness (Mohs) | 6.0 – 6.5 |
| Density | ~2.6 g/cm³ |
| Melting Point | ~1,100 – 1,200 °C |
| Particle Size | -300 µm, -63 µm |
| Specific Surface Area | Application dependent |
| Component | Ratio (%) |
|---|---|
| Silicon Dioxide (SiO₂) | ~55 – 60 |
| Aluminum Oxide (Al₂O₃) | ~22 – 24 |
| Sodium Oxide (Na₂O) | ≥ 10 |
| Potassium Oxide (K₂O) | ≥ 6 |
| Calcium Oxide (CaO) | < 1 |
| Iron Oxide (Fe₂O₃) | < 0.1 |
| Titanium Dioxide (TiO₂) | < 0.1 |
Mineralogical Composition:
| Mineral | Formula | Ratio (%) |
|---|---|---|
| Albite (Na-feldspar) | NaAlSi₃O₈ | ~50-60 |
| Orthoclase (K-feldspar) | KAlSi₃O₈ | ~15-20 |
| Nepheline | (Na,K)AlSiO₄ | ~15-20 |
| Other Minerals | - | < 5 |
| Property | Description |
|---|---|
| Hardness | Hard mineral; difficult to process |
| Fluxing Agent | Lowers melting temperature in ceramic bodies and glazes |
| Glaze Brightness | Increases glaze brightness and gloss |
| Thermal Expansion | Increases thermal expansion coefficient → requires controlled use |
| Alkali Content | High Na₂O and K₂O content provides fluxing properties |
| Alumina Content | High Al₂O₃ content enhances mechanical strength |
| Sector | Application |
|---|---|
| Ceramic Glazes | Used as flux and vitrifying agent in glaze formulations |
| Ceramic Frit | Raw material in frit production |
| Floor Tiles | High-grade floor tile production |
| Granite Production | Granite ceramic manufacturing |
| Bright Glazes | Bright glaze production |
| Glass Industry | Specialty glass formulations |
| Insulation Materials | Electrical insulation materials |
| Property | Nepheline Syenite | Feldspar |
|---|---|---|
| Melting Temperature | Lower (~1,100-1,200°C) | Higher (~1,200-1,300°C) |
| Na₂O + K₂O Content | ≥ 16% | ~10-14% |
| Al₂O₃ Content | ~22-24% | ~18-20% |
| SiO₂ Content | ~55-60% | ~65-70% |
| Fluxing Effect | Stronger | Weaker |
| Glaze Brightness | Higher | Lower |
| Cost | Generally higher | Generally lower |
| Parameter | Information |
|---|---|
| Storage Conditions | Dry, enclosed area; protect from moisture |
| Storage Temperature | Room temperature |
| Keep Away From | Moisture, acids |
| Shelf Life | Unlimited (under proper storage) |
| Packaging | 1300 kg Big Bag |
| Handling Notes | Avoid dust formation; avoid eye and respiratory contact |
Personal Protective Equipment:
Dust mask (P2 or N95)
Safety goggles
Protective gloves
Protective clothing
| Parameter | Value |
|---|---|
| GHS Classification | Not classified (not hazardous) |
| Toxicity | Low |
| Dust Inhalation | Dust inhalation may cause respiratory tract irritation |
| Skin Contact | May cause mild irritation |
| Eye Contact | May cause mild irritation |
| Carcinogenicity | Not classified |
| Ecotoxicity | Low |
| Silica Content | May contain crystalline silica (respiratory risk) |
SPECIAL WARNINGS:
Nepheline Syenite is a feldspathoid mineral that does not contain free crystalline silica (quartz)
Dust inhalation may cause respiratory tract irritation
Appropriate dust control measures should be taken
Thermal expansion coefficient is high; controlled use in glaze recipes is required
| Parameter | Information |
|---|---|
| Ecotoxicity | Low |
| Bioaccumulation | Not expected |
| Environmental Impact | Low |
| Waste Management | Disposal according to local regulations |
| Recycling | Possible |
| Parameter | Information |
|---|---|
| UN Number | Not classified as dangerous for transport |
| Hazard Class | Not classified |
| Packing Group | Not applicable |
| Proper Shipping Name | Nepheline Syenite |
| Marine Pollutant | No |
| ADR/RID Label | None |
SUMMARY:
Nepheline Syenite is an igneous rock composed primarily of alkali feldspar and nepheline. In micronized powder form (-300 µm, -63 µm), it is used as a flux, fluxing agent, and vitrifying agent in the ceramic industry. Its high Na₂O (≥10%) and K₂O (≥6%) content provides low melting temperature and enhances glaze brightness.
Key Properties:
| Property | Value |
|---|---|
| Appearance | White/light gray powder |
| Density | ~2.6 g/cm³ |
| Hardness (Mohs) | 6.0-6.5 |
| Melting Point | ~1,100-1,200 °C |
| Na₂O | ≥ 10% |
| K₂O | ≥ 6% |
| Packaging | 1300 kg Big Bag |
CRITICAL WARNINGS:
Fluxing Effect: Lowers melting temperature in ceramic glazes and bodies. This property must be considered in recipe formulations.
Thermal Expansion: Increases thermal expansion coefficient. Requires controlled use; otherwise may cause crazing (glaze cracking).
Glaze Brightness: Enhances glaze brightness and gloss. Preferred in bright glaze production.
Feldspar Alternative: Offers lower melting temperature and higher alkali content compared to feldspar. Cost/performance evaluation is recommended.
Dust Control: Dust inhalation may cause respiratory tract irritation. Appropriate dust control measures and personal protective equipment should be used.
Storage: Sensitive to moisture; store in dry, enclosed areas.
Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. All local, national, and international regulations must be followed when working with Nepheline Syenite. Testing prior to use in glaze recipes is recommended.