ULTRA-TRADE LLC

Aluminosilicate microspheres (often called cenospheres) are a lightweight powdery material consisting of hollow microspheres that are formed as a by-product of coal combustion at thermal power plants.
Main properties
Composition: silicon oxides (SiO₂ ~50–65%) and aluminum oxides (Al₂O₃ ~25–40%), small impurities of Fe₂O₃, CaO, MgO.
Form: hollow spheres with a diameter of 10–500 μm.
Density: 0.35–0.7 g/cm³ (several times lighter than water).
Thermal conductivity: low (good heat insulator).
Refractoriness: up to 1400–1600 °C.
Chemical resistance: resistant to alkalis, salts, oil, weak acids.

Product: primary unalloyed aluminum of technical grade.
Grade: A7-A8
Form: small ingots (weighing about 20 kg each).
Standard: ST AO 40494160-011-2009.
The material fully complies with the chemical composition requirements specified in the above standard. A detailed quality certificate (factory test certificate) will be provided for each batch.
Origin: Kazakhstan
HS code: 760110
Available quantity: 3000 tons
Price: LME Cash Settlement (average of month of shipment) + Fastmarkets Rotterdam duty-paid premium.
Delivery terms: [EXW / FCA / FOB – Incoterms 2020]

Aluminum powder is a finely dispersed powder made from aluminum (silver-gray or dark gray in color) obtained by mechanical or gas atomization methods.
Main characteristics
Particle size: 1 to 200 microns (depending on the production method).
Particle shape: spherical, flaky, or irregular.
Al content: typically 90–99.7% (the rest is oxide film and impurities).
Bulk density: 0.2–1.2 g/cm³.
Chemical activity: high, easily oxidized when heated.

Rice husk ash (RHA) is a by-product of rice husk combustion. Due to its high content of amorphous silicon dioxide (SiO₂), it has great industrial value.
Composition (average values)
SiO₂: 85–95% (in amorphous form — the most valuable part)
Al₂O₃: 0.5–2%
Fe₂O₃: 0.3–2%
CaO: 1–2%
K₂O, MgO, and other impurities — in small quantities.
Properties
Lightweight black powder (combustion temperature 600 degrees Celsius).
High specific surface area → excellent pozzolanic properties (reacts with Ca(OH)₂).
Fire resistance and low thermal conductivity.
Environmentally friendly material — processing of agricultural waste.

Ferrochrome is an alloy containing 65 to 72% chromium, approximately 28 to 30% iron, and no more than 1.5% silicon (Si). It also contains small amounts of sulfur (S), phosphorus (P), and other non-ferrous metals and gases. 

All grades of ferrochrome are used to improve the quality and performance characteristics of steel, enhancing its strength, corrosion resistance, and wear resistance.

This material fully complies with the international standard ISO 5448, which guarantees its quality and reliability when used in the metallurgical industry.

The use of ferrochrome allows for improving the technological parameters of steel production and the final properties of metal products. This alloy is indispensable for the manufacture of high-quality steels with improved performance characteristics.

If you need ferrochrome with an optimal chromium and iron content that meets strict quality standards, choose a material that is certified to ISO 5448.

We offer ferrochrome of all grades with proven chemical composition and stable quality, which ensures reliability and durability in steel production.