Gold mining high purity boron — UrbanMines Tech. Material solutions and technical specifications white paper
As a leading company in the field of boron materials in China, UrbanMines Tech. Co., Ltd. focuses on the research development and production of high-purity crystalline boron, amorphous boron, and electronic-grade boron nitride. Relying on years of technological accumulation and a complete process control system, the company’s products are exported to high-end markets such as Germany, the United States, Japan, and South Korea, providing core material solutions for semiconductors, new energy, nuclear industry, special alloys, and other fields.
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Core product and technology advantages
1. Crystalline boron series
- Ultra-high purity crystalline boron (grade 6N, 99.9999%)
Used as a dopant for semiconductor single-crystal silicon rods to ensure chip-level purity requirements.
- High-purity crystalline boron (2N~5N grade)
Used as high-temperature resistant alloy additives and nuclear reactor shielding materials to improve the performance limits of materials.
2. Amorphous boron series (below 5N grade)
It is suitable for solid rocket propellants, high-energy fuel combustion aids, and solar electronic slurries, providing stable energy release characteristics.
3. Electronic grade boron nitride (purity ≥99%)
- Zero magnetism & no black spots: meet the cleanliness requirements of precision electronic devices
- Nano-level particle size control: D50 particle size as low as 10 microns (customizable)
- Excellent thermal conductivity and insulation: suitable for high-frequency electronic packaging and thermal conductive interface materials.
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Customized technical capabilities
Based on the exclusive process know-how, the company provides a full range of customized services:
✅ Precise control of B11 isotope abundance
✅ Customized particle size classification (nano to micron)
✅ Purity range is adapted as needed (2N~6N)
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Technical Specifications (Unification of Testing Standards)
To eliminate detection differences and ensure consistency in quality judgment, the following specifications are formulated:
1. Particle size testing standards
| Method | Principles and limitations | Company regulations |
| Scanning electron microscope | Surface morphology observation, unable to statistically distribute; agglomeration is easy to misjudge | Not recommended as a basis for particle size acceptance |
| Laser particle size analyzer | International general standard, sodium pyrophosphate dispersion + ultrasonic deagglomeration | The only recognized test method |
Case description: A Korean customer required an amorphous boron particle size of 2~4μm. The electron microscope misjudged the agglomerated particles as unqualified, and the laser method verified that the particles met the standard.
Specification requirements: Customers need to specify the D50/D90 indicators and use a laser particle size analyzer for testing.
2. Purity Testing Standards
| Method | Detection range | Reasons for differences in results | Company regulations |
| ICP | 15 impurities (<1ppm) | Few items, low total impurity calculation value | 6N purity (99.9999%) |
| GDMS | 70 impurities (<10ppm) | Many items, high total impurity calculation value | 4N purity (99.99%) |
Core conclusions:
- Physical purity consistency: The same sample may have different nominal purity due to varying numbers of test items, but the actual composition does not change.
- Specification requirements: The customer needs to declare the test method and the number of impurities. Our company will synchronize the test process and attach the original report.
Quality Commitment
UrbanMines Tech. Controls the entire process:
* Particle size control: laser particle size analyzer + standardized dispersion process
* Purity control: multi-method cross-validation + ultra-clean production environment
* Isotope control: B11 abundance precision adjustment technology
Continue to provide customers with customizable, highly consistent, and zero-controversy boron material solutions.
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Conclusion
Deeply cultivating the technology in the field of “boron” and solving the ultimate challenges of materials. UrbanMines Tech. Helps global partners achieve technological innovation and quality leaps with transparent data testing specifications and internationally leading customization capabilities.
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