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Darkhan supplies coal‑derived fly ash in the form of aluminosilicate glass cenospheres, a lightweight hollow microsphere produced during coal combustion. The material is offered as a standard powder grade and as cenospheres, with particle sizes ranging from 20 µm up to 500 µm, matching the specifications listed by the supplier. Chemical analysis shows SiO₂ between 50‑65 %, Al₂O₃ 25‑39 %, and Fe₂O₃ 1‑7 %, aligning with typical pozzolanic requirements for concrete and specialty composites.
Typical bulk density for these cenospheres lies around 0.45‑0.60 t/m³, considerably lower than conventional ash, making them attractive for lightweight concrete and filler applications. Standard moisture content for fly ash is ≤ 5 %, and the product complies with common ASTM pozzolan standards, although the supplier does not explicitly cite a certification. The cenospheres’ spherical shape improves flowability and reduces water demand in mixes, a benefit recognised across the construction sector.
Key markets include ready‑mix concrete producers, precast manufacturers and producers of high‑performance composites that exploit the hollow microsphere’s thermal insulation properties. Darkhan can ship the product in 500 kg big bags on pallets, with delivery options covering DAP by truck or CIF/FOB in sea containers. Prospective buyers should confirm minimum order quantities, incoterms and payment conditions directly with the supplier before finalising a contract.
| Material | Coal Fly Ash (Cenospheres) - Aluminosilicate glass |
| Particle size range | 20‑500 µm (cenospheres 20‑50 µm to 400‑500 µm) |
| SiO₂ content | 50‑65 % by weight |
| Al₂O₃ content | 25‑39 % by weight |
| Fe₂O₃ content | 1‑7 % by weight |
| CaO content | 0.2‑2 % by weight |
| MgO content | 0.2‑2 % by weight |
| K₂O content | 0.2‑4 % by weight |
| Na₂O content | 0.3‑2 % by weight |
| TiO₂ content | 0.5‑2 % by weight |
| Typical bulk density | typical 0.45‑0.60 t/m³ |
| Moisture content | typical ≤ 5 % (mass basis) |
| Packaging | 500 kg big bags on pallets |
| Shipping terms | DAP by truck, CIF/FOB sea container |
| Standard compliance | typical ASTM C618 pozzolan specification |
| Common applications | Lightweight concrete, filler, high‑performance composites |
Darkhan is listed with an address in Astana, Kazakhstan, though the precise street details are not disclosed. The supplier carries a harbor trust tier on the platform and currently shows a response rate of 0 %, indicating that communication may require persistent follow‑up.
The company’s offering focuses on coal‑derived fly ash supplied as cenospheres and standard powder, intended for cement, concrete and specialty composite manufacturers. No further details on production capacity, certifications or client references are provided in the public listing.
Premium coal fly ash sourced from thermal power plant furnaces, available as cenospheres and standard powder grades. Particle size ranges from 20 to 500 microns, suitable for concrete production, cement replacement, and industrial filler applications. Widely traded internationally for construction materials and specialty composites manufacturing.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Before committing to a purchase, importers should obtain the latest chemical analysis report covering SiO₂, Al₂O₃, Fe₂O₃ and other oxide levels, as well as a confirmation of compliance with ASTM C618 or equivalent pozzolan standards. Verifying Darkhan’s harbor trust tier and requesting any available quality certificates helps reduce supply uncertainty. Requesting a trial sample can also confirm that the cenospheres meet the intended performance criteria in the buyer’s mix design.
Darkhan can deliver the fly ash in 500 kg big bags on pallets, with options for DAP delivery by truck or CIF/FOB shipment in sea containers. Buyers need to agree on the exact Incoterms, confirm expected lead times based on Kazakhstan’s port processing, and negotiate payment terms, commonly a Letter of Credit or advance payment, before loading. All logistics details should be documented in the sales contract to avoid misunderstandings.
Upon receipt, the shipment should be inspected for moisture levels not exceeding 5 % and for any physical damage to the big‑bag packaging. A third‑party laboratory can conduct XRF testing to verify chemical composition and perform pozzolanic activity tests to ensure suitability for concrete applications. Maintaining the Certificate of Analysis and the material safety data sheet as part of the import documentation is recommended for future quality assurance.
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When sourcing Fly Ash for your business, securing the right balance of quality and cost is essential. Darkhan, a supplier based in Kazakhstan, offers this product with key specifications including Class F (Low Calcium) / Class C (High Calcium) / Cenospheres, Aluminosilicate glass content >85%, Loss on Ignition (LOI) <5%, and 20-500 microns (cenospheres), powder form for bulk grade. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $700/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 2621.21, making it a staple in the Fly Ash sector with strong demand from importing countries worldwide.
Importing Fly Ash requires careful attention to shipping logistics, customs compliance, and secure payment terms. Darkhan offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 2621.21 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading import export marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Fly Ash for business registration and quality documents before ordering. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of manufacturers and exporters across 200+ countries. Explore similar products in the Fly Ash category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Importing Fly Ash requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 2621.21 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Fly Ash from Darkhan is $700/Bags on FOB terms from Kazakhstan. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Darkhan through EximNext.
The supplier, Darkhan, has set a Minimum Order Quantity (MOQ) of 1 Bags for Fly Ash. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Fly Ash is classified under HS Code 2621.21. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Fly Ash from Kazakhstan, negotiate shipping terms (FOB, CIF, or EXW) directly with Darkhan. Ensure you have the necessary import licenses for Fly Ash products in your destination country.
Open the Darkhan company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
The key specifications for Fly Ash supplied by Darkhan include Class F (Low Calcium) / Class C (High Calcium) / Cenospheres, Aluminosilicate glass content >85%, Loss on Ignition (LOI) <5%, and 20-500 microns (cenospheres), powder form for bulk grade. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Darkhan offers Fly Ash with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Fly Ash is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Darkhan through our platform.
Darkhan maintains international quality certifications. These ensure that the Fly Ash meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Darkhan will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Darkhan.
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