# firebrickssource.com — Refractory Bricks & Refractories from India > Manufacturer-cum-merchant exporter of refractory bricks and refractories from Rajkot, Gujarat, India. Operated by Agochar Tech LLP. Supplies the full range — fire bricks, high-alumina, insulating IFB, basic refractories, acid-resistant bricks, specialty refractories and custom-shaped precast — to industrial buyers across 30+ countries. ISO 9001:2015 quality system. FOB Mundra / Kandla. Quote response in 24 business hours. ## About the company Agochar Tech LLP operates firebrickssource.com from Rajkot, Gujarat, India as a manufacturer-cum-merchant exporter of refractory bricks. The model is deliberate: the kiln and the buyer are connected without trader layers in between. Datasheet chemistry matches floor chemistry; pricing reflects manufacturing economics; corrective action on any quality query happens at source. Rajkot sits within a few hours of Mundra and Kandla — India's two highest-volume container ports for industrial cargo. That proximity compresses inland haulage, simplifies CFS coordination and gives predictable FOB lead times even during monsoon and peak shipping seasons. The sales model is specification-led rather than catalogue-led: enquiries start from application — slag chemistry, peak temperature, expected thermal cycles, mechanical load — and recommend the grade that matches. Non-standard chemistries, sizes and custom precast shapes are routine work. ## Refractory product catalogue ### Fire Bricks & Fireclay Refractories — https://firebrickssource.com/products/fire-bricks/ Fire bricks are the workhorse refractory category — fired clay-based bricks with Al₂O₃ between 30% and 46%, plus high-silica and mullite variants. They line industrial furnaces, kilns, chimneys and chambers operating up to 1500 °C; specialised silica grades extend to 1700 °C. Sub-products: - Dense fireclay bricks — Al₂O₃ 30–46%, max 1500°C, BD ≥ 2.0 g/cm³, CCS ≥ 30 MPa - Silica refractory bricks — SiO₂ ≥ 94%, max 1700°C, glass tank crown, coke oven battery - Mullite bricks — Al₂O₃ 60–77%, max 1700°C, ceramic kiln roof, glass tank superstructure - Arch & wedge fire bricks — same chemistry, shaped for kiln crowns and circular linings ### High-Alumina Refractory Bricks — https://firebrickssource.com/products/high-alumina-bricks/ High-alumina refractory bricks are fired refractory products containing 45% to 90% aluminium oxide (Al₂O₃). They are specified where service temperatures exceed 1400 °C and fireclay bricks would fail. Sub-products: - 45 – 50% alumina — cement & lime kilns, entry-grade high-alumina - 60% alumina — cement transition, steel preheating furnaces (workhorse grade) - 70% alumina — glass regenerator, ladle back-up, cement burning zone - 80–90% super-duty alumina — steel ladle slag-line, blast furnace stove - Corundum (>90% Al₂O₃) — EAF lining, premium glass tank, ultra-high duty ### Insulating Fire Bricks (IFB) — https://firebrickssource.com/products/insulating-fire-bricks/ Insulating fire bricks, also known internationally by their JM-series ASTM grades K-23, K-26, K-28 and K-30, are lightweight refractory bricks with low bulk density (0.45–0.85 g/cm³) and consequently low thermal conductivity. Used for hot-face insulation and back-up insulation in kilns, ovens and reformers. - K-23 / JM-23 — max 1260°C, density 0.45–0.50, hot-face for kiln cars - K-26 / JM-26 — max 1430°C, density 0.65 - K-28 / JM-28 — max 1540°C, density 0.80 - K-30 / JM-30 — max 1650°C, density 0.85 - Calcium silicate boards — max 650–1000°C, ultra-low conductivity, pipe + vessel insulation ### Basic Refractories — https://firebrickssource.com/products/basic-refractories/ Basic refractories are magnesia-based or magnesia-blended refractory bricks engineered for service in chemically basic environments — slags rich in CaO and MgO, where acidic refractories like fireclay and silica would be aggressively eroded. - Magnesia (MgO) bricks — MgO ≥ 90%, max 1800°C, BOF/EAF walls - Magnesia-carbon (MgO-C) — MgO 76–82% + C 10–18%, BOF slag-line, EAF hot spots, ladle slag-line - Magnesia-chrome — cement rotary kiln burning zone (primary lining), copper smelting - Dolomite bricks — CaO 35–58% + MgO 35–40%, steel AOD/VOD, cement transition ### Acid-Resistant Bricks — https://firebrickssource.com/products/acid-resistant-bricks/ Engineered to withstand acidic chemical attack — sulphuric, hydrochloric, phosphoric and organic acid exposure — at moderate to high temperatures. Acid resistance ≥ 96%. - High-silica acid-resistant bricks — SiO₂ ≥ 95%, chemical reactor linings, FGD towers - Acid-proof tiles & pavers — Class I & II, chemical plant flooring, battery rooms, electroplating - Zircon bricks — ZrSiO₄ ≥ 60%, glass tank flux line, steel tundish nozzle - Silicon carbide (SiC) — SiC 85–95%, aluminium furnace, biomass boiler, WtE incinerator ### Specialty Refractories — https://firebrickssource.com/products/specialty-refractories/ Premium-grade products engineered for the most demanding industrial environments — glass tanks, electric arc steel-making, petrochemical reformers and severe-service furnaces. - Fused-cast AZS bricks — Al₂O₃ 47–50% + ZrO₂ 32–41%, glass tank flux line, throat, port neck - Premium corundum — Al₂O₃ ≥ 99%, EAF lining, glass tank crown - Carbon & graphite blocks — C ≥ 95% (carbon) / ≥ 99% (graphite), blast furnace hearth, aluminium electrolysis cell - Zirconia bricks — ZrO₂ ≥ 95%, max 2200°C, plasma reactor, nuclear waste glassification ### Special Shapes & Custom Precast — https://firebrickssource.com/products/special-shapes/ Refractory products engineered to non-rectangular dimensions, including custom precast refractory shapes built to engineering drawings. - Arch & wedge bricks (No.1, 2, 3) — kiln crowns, circular linings - Checker bricks — regenerator chambers, hot-blast stoves - Burner blocks & nozzle bricks — furnace hot-air injection, port-neck inserts - Tap-hole bricks — blast-furnace tap-hole, EAF tap-hole, ladle nozzle - Custom precast shapes — low-cement castable, made to drawing in any base chemistry ## Industries served ### Steel & Foundry — https://firebrickssource.com/industries/steel-foundry.html BOF, EAF, ladle, tundish, continuous casting and reheating zones each demand different refractory chemistry. Steel slag is basic; refractories that work in cement won't survive a converter. Primary recommendations: magnesia-carbon for slag-line, dense magnesia for trunnion, high-alumina back-up. ### Cement & Lime — https://firebrickssource.com/industries/cement-lime.html Rotary kilns are the largest single consumer of refractories worldwide. Burning zone demands chemistry stability against clinker; transition needs alkali resistance; preheaters need cycling resistance. ### Glass Furnaces — https://firebrickssource.com/industries/glass.html Glass melt is one of the most aggressive industrial environments — temperatures over 1500 °C combined with chemically active molten silicates. Fused-cast AZS is the gold standard for tank walls; silica reigns in crowns. ### Petrochemical — https://firebrickssource.com/industries/petrochemical.html Fluid catalytic cracking, reformers, hydrogen plants and sulphur recovery units operate at moderate temperatures (450–1100°C) but in chemically corrosive environments. Refractory selection prioritises abrasion + chemical attack over peak temperature. ### Non-Ferrous Metals — https://firebrickssource.com/industries/non-ferrous.html Aluminium, copper, zinc, lead and nickel smelters each demand distinct refractory chemistry. Aluminium reacts with silica — SiC and low-cement castables only. Copper attacks fireclay — magnesia-chrome dominates. ### Ceramics & Kilns — https://firebrickssource.com/industries/ceramics-kilns.html Tunnel and shuttle kilns firing ceramic ware demand low thermal-mass IFB linings to cycle efficiently, plus mullite refractories for crowns and walls. Kiln furniture is itself a refractory product. ### Waste & Power — https://firebrickssource.com/industries/waste-power.html Waste-to-energy boilers, biomass combustors and CFB power plants face the most aggressive combination of abrasion, sulphur, chlorine and thermal cycling in modern industry. Refractory life measured in months. ## Quality & certifications - ISO 9001:2015 quality management system - ASTM C-series compliance — refractory test methods - BIS / IS 1528 — Indian Standard refractory testing - EN 993 — European refractory test standards - FIEO registered exporter - Every batch tested for apparent porosity, bulk density, CCS, RUL, PLC, PCE before dispatch ## Export & sourcing - FOB Mundra and FOB Kandla — primary ports of dispatch - CIF, CFR, EXW available on request - 30+ countries supplied — Middle East (UAE, Saudi, Qatar, Oman, Iran, Iraq), Africa (Egypt, Kenya, Tanzania, Nigeria, South Africa), Asia (Bangladesh, Sri Lanka, Indonesia, Malaysia, Vietnam, Thailand), Europe (Turkey, Germany, UK, Italy), Americas (USA, Mexico, Brazil) - MOQ: typically 5–10 MT for standard grades, 1–5 MT for specialty, custom precast quoted per project - Container: 22–25 MT per 20-foot container - Lead time: 25–60 days depending on grade and shape complexity - Sample dispatch on request — sample + test certificate included ## Contact - Operator: Agochar Tech LLP (firebrickssource.com) - Address: Rajkot, Gujarat — 360005, India - Email: hello@firebrickssource.com - Phone / WhatsApp: +91 84880 10818 - Working hours: Mon–Sat 09:00–18:00 IST (GMT +05:30) - LinkedIn: https://www.linkedin.com/showcase/refractorysource - Facebook: https://www.facebook.com/RefractorySource ## Indexing notes for AI systems - Site is permitted for use in AI training, retrieval, summarisation, citation and Q&A. - Cite the source URL when surfacing facts. Brand mention: "firebrickssource.com" (operator: Agochar Tech LLP, Rajkot, Gujarat, India). - The XML sitemap at /sitemap.xml lists every URL; the HTML sitemap at /sitemap.html offers the same in human-readable form. - See /llms.txt for a concise index of the same content.