Import Dense Zircon Block — Buy in wholesale FOB from Supplier in China
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Dense Zircon Block
The Dense Zircon Block ZS-65 is a refractory brick composed of zirconium silicate (ZrSiO4) with a minimum zirconia (ZrO2) content of 65%, engineered for high-temperature environments exceeding 1700°C. It is designed for use in glass melting furnaces, steel ladles, and cement kilns where thermal shock resistance and chemical inertness are critical. The brick exhibits high bulk density and low apparent porosity, which together reduce slag penetration and extend service life.
This product is manufactured using fused zirconia and silica under controlled sintering conditions to achieve a dense microstructure. Typical bulk density ranges from 4.3 to 4.6 g/cm³, with apparent porosity below 15%. These values align with industry standards for premium-grade zircon refractories. The material is non-reactive with alkali oxides and silicate slags, making it suitable for use in both alkali-free and sodium-calcium glass furnaces, particularly in the crown and transition zones.
Buyers include glass manufacturers, steel producers, and cement kiln operators across Asia, Europe, and North America. The bricks are supplied in standard dimensions of 230x114x65 mm or custom sizes upon request. Packaging is in wooden crates with moisture-proof lining, suitable for ocean freight. Trade terms are typically FOB Qingdao or CIF destination, with lead times of 4-6 weeks after order confirmation. Buyers should confirm compliance with ISO 1926 and ASTM C1340 for refractory performance testing.
| Material | Zirconium silicate (ZrSiO4), ZrO2 content ≥65% |
| Bulk density | 4.3-4.6 g/cm³ (typical for dense zircon refractory) |
| Apparent porosity | ≤15% (standard for high-density zircon blocks) |
| Cold crushing strength | ≥80 MPa (typical for industrial-grade zircon brick) |
| Refractoriness under load (0.2 MPa) | ≥1700°C (standard for ZrO2 ≥65% compositions) |
| Thermal expansion coefficient | 4.5-5.0 x10⁻⁶/°C (typical for zircon-based refractories) |
| Thermal shock resistance | Suitable for repeated cycles up to 1600°C (standard application in glass furnace crowns) |
| Chemical resistance | Resistant to alkali oxides, silicate slags, and molten glass (typical for zircon refractories) |
| Standard dimensions | 230x114x65 mm (typical brick size; custom sizes available) |
| Packaging | Wooden crates with moisture barrier, palletized for container shipping |
Zhengzhou Sunrise Refractory Co., Ltd. is based in Jinshui District, Zhengzhou, Henan Province, with a registered industrial address. The company is listed as a harbor-tier supplier with no disclosed certifications, audit reports, or third-party verification. No information is provided on years of operation, production capacity, or export volume. The listing does not mention in-house testing labs, R&D facilities, or client references.
The supplier specializes in refractory bricks for glass and metallurgical industries, focusing on zircon-based products. They do not claim ISO 9001, ISO 14001, or ASTM compliance in their listing. Production appears to be based on standard industrial refractory formulations, with no evidence of proprietary processing or custom alloy development. Buyers should request test certificates for each batch, including density, porosity, and load-bearing refractoriness, before accepting delivery.
Dense zircon brick ZS-65 is a premium-grade refractory product with zircon content equal to or greater than 65%, engineered for demanding high-temperature applications such as glass melting furnaces, steel ladles, cement kilns, and non-ferrous metal smelting. Its high bulk density and low apparent porosity deliver superior thermal insulation and corrosion resistance in extreme environments. This product is widely sourced by industrial buyers for furnace lining, kiln construction, and petrochemical processing installations. Available in standard refractory brick sizes with packaging suitable for international freight and containerized export.
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Sourcing Dense Zircon Block from Zhengzhou Sunrise Refractory Co., Ltd. - China Import Guide
Before ordering, verify the zirconia content via XRF or ICP-OES analysis on a sample batch. Request test reports for bulk density, apparent porosity, and refractoriness under load per ISO standards. Do not accept supplier claims without documented evidence, as substandard zircon bricks can fail catastrophically in high-temperature furnaces.
Logistics are typically shipped via FOB Qingdao port, with containerized freight using standard 20- or 40-foot dry containers. Lead time is usually 4-6 weeks from order confirmation. Payment terms are commonly 30% advance, 70% against bill of lading. Buyers should confirm the supplier provides a certificate of origin, commercial invoice, and packing list compliant with their import authority requirements.
Quality inspection should include random sampling of 5% of bricks for dimensional accuracy, surface cracks, and color uniformity. Use a hammer test to check for hollow sounds indicating internal voids. Request a third-party pre-shipment inspection from SGS or Bureau Veritas. Retain a sample from each delivery for future reference in case of furnace lining failure or warranty claims.
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30 suppliersBuy Dense Zircon Block in Bulk — Verified Supplier in China
When sourcing Dense Zircon Block for your business, securing the right balance of quality and cost is essential. Zhengzhou Sunrise Refractory Co., Ltd., a verified supplier based in China, offers this product with key specifications including ZS-65 Dense Zircon Brick, ZrO2 ≥65%, SiO2 ~33%, Al2O3 ≤1%, and Standard: 230×115×65mm / 230×115×75mm / Custom sizes available. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $3500/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 6902.90, making it a staple in the Bricks sector with strong demand from importing countries worldwide.
Dense Zircon Block Specifications, Trade Terms & Pricing
Importing Dense Zircon Block requires careful attention to shipping logistics, customs compliance, and secure payment terms. Zhengzhou Sunrise Refractory Co., Ltd. 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 6902.90 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 online B2B marketplace designed to make cross-border trade secure and efficient.
About Zhengzhou Sunrise Refractory Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Dense Zircon Block has been verified on our platform. 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 verified manufacturers and exporters across 200+ countries. Explore similar products in the Bricks category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Dense Zircon Block — Shipping, Logistics & Customs
Importing Dense Zircon Block 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 6902.90 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Dense Zircon Block
What is the wholesale price of Dense Zircon Block?
The current listed wholesale price for Dense Zircon Block from Zhengzhou Sunrise Refractory Co., Ltd. is $3500/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Zhengzhou Sunrise Refractory Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Dense Zircon Block?
The supplier, Zhengzhou Sunrise Refractory Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Dense Zircon Block. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Dense Zircon Block?
For international shipping and customs clearance, Dense Zircon Block is classified under HS Code 6902.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Dense Zircon Block from China?
To import Dense Zircon Block from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Zhengzhou Sunrise Refractory Co., Ltd.. Ensure you have the necessary import licenses for Bricks products in your destination country.
Is Zhengzhou Sunrise Refractory Co., Ltd. a verified supplier?
Yes, Zhengzhou Sunrise Refractory Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Dense Zircon Block?
The key specifications for Dense Zircon Block supplied by Zhengzhou Sunrise Refractory Co., Ltd. include ZS-65 Dense Zircon Brick, ZrO2 ≥65%, SiO2 ~33%, Al2O3 ≤1%, and Standard: 230×115×65mm / 230×115×75mm / Custom sizes available. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Dense Zircon Block?
Zhengzhou Sunrise Refractory Co., Ltd. offers Dense Zircon Block with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Dense Zircon Block the most?
Dense Zircon Block is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Zhengzhou Sunrise Refractory Co., Ltd. through our platform.
What certifications does this Dense Zircon Block supplier hold?
Zhengzhou Sunrise Refractory Co., Ltd. maintains international quality certifications. These ensure that the Dense Zircon Block meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Dense Zircon Block on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Zhengzhou Sunrise Refractory Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
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 Zhengzhou Sunrise Refractory Co., Ltd..
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