Overview
Bauxite clinker is a processed form of raw bauxite, obtained by calcination at temperatures between 1400°C and 1800°C. This process removes volatile impurities and increases alumina (Al₂O₃) concentration, enhancing its refractory properties. It is a critical material in high-temperature industrial applications due to its stability and resistance to slag corrosion. The global supply of bauxite clinker is concentrated in regions with abundant bauxite reserves, such as China, Guyana, and Brazil. Its quality is graded based on alumina content, with higher grades (85–90% Al₂O₃) commanding premium prices for specialized refractory uses.
Physical and Chemical Properties
Bauxite clinker is characterized by its high alumina content (typically 80–90%), low iron oxide, and minimal silica impurities. Its dense, crystalline structure provides low porosity (≤5%) and high mechanical strength, which are essential for withstanding thermal cycling in furnaces and kilns. Chemically inert, it resists attack by acids and alkalis at elevated temperatures. The material’s thermal conductivity is relatively low, making it suitable for insulation layers in refractory linings. Grain size distribution (e.g., 0–1mm, 1–3mm) is a key parameter affecting its compaction and performance in castables or bricks.
Main Applications
The primary use of bauxite clinker is in refractory products, such as high-alumina bricks and monolithic castables for steel ladles, cement rotary kilns, and incinerators. Its ability to withstand temperatures above 1600°C makes it indispensable in metallurgy and heavy industry. Secondary applications include abrasives (e.g., grinding wheels) and proppants in oil drilling. In construction, it is blended into cement to improve high-temperature resistance. The material’s versatility also extends to precision casting molds, where its stability ensures dimensional accuracy.
Safety and Storage
While bauxite clinker is non-hazardous, its fine particles can cause respiratory irritation. Suppliers recommend using dust masks, goggles, and gloves during handling. Proper ventilation is advised in processing areas to mitigate airborne dust exposure. Storage requires protection from moisture, which can degrade its refractory properties. Bulk shipments are typically packed in moisture-proof bags or stored in silos. For long-term storage, stacking should avoid direct ground contact to prevent contamination and water absorption.
B2B Procurement Guide
Buyers should prioritize suppliers who provide certified chemical analysis reports, detailing Al₂O₃, SiO₂, and Fe₂O₃ percentages. Key procurement metrics include bulk density (≥2.8 g/cm³ for high-grade clinker) and grain size consistency, which impacts refractory performance. Negotiate pricing based on volume, with discounts common for orders exceeding 20 tons. Consider FOB or CIF terms depending on logistics costs. For niche applications (e.g., >88% Al₂O₃), expect longer lead times due to specialized calcination requirements.
Related Manufacturers
- 主营：介质粉、污水处理磁粉、活性白土、铝土矿、铁粉、重质碳酸钙、轻质碳酸钙、远红外粉、滑石粉、煅烧滑石粉、配重砂、贝壳粉、石英粉、玻璃粉、麦饭石粉、白云石粉、硅藻土、绿沸石、石膏粉、陶土、四氧化三铁、硅灰、矿渣粉、粉煤灰、膨润土、硫化铁
- 主营：高铝细粉、耐火材料、耐火砖原料、耐火骨料、高铝骨料、50含量高铝骨料、骨料砂、各种含量耐火骨料、铝矾土、耐火细粉、粘土细粉、耐火砂、高铝耐火砂、50含量高铝细粉、耐火水泥、高铝水泥、铝酸盐耐火水泥、CA50耐火水泥、各种型号高铝细粉、铝矾土砂
- 主营：滑石粉、金刚砂、火山石、膨润土、高岭土、高纯铁粉、煅烧石英砂、环氧地坪砂、聚氨酯地坪、透水砖彩砂、源头工厂彩砂、耐磨地坪用钢渣
- 主营：碳酸钙、高岭土、滑石粉、负离子、金刚砂、贝壳粉
- 主营：超细硅酸铝粉、硅藻土、膨润土、高岭土、滑石粉、彩砂、透明粉、白炭黑、金刚砂、石墨、海泡石、木粉、轻钙、重钙、玻璃粉、贝壳粉、凹凸棒土、玻璃鳞片、陶土、铝矾土、火山岩、电气石粉、合成云母、赤铁粉
- 主营：轻质碳酸钙、4A沸石粉、膨润土、耐火骨料铝矾土、重晶石粉、配重铁粉 铁砂、氢氧化钙、红陶土 黄陶土、木粉、麦饭石粉、沸石粉、煅烧高岭土、水洗高岭土、滑石粉、负离子粉、硅藻土、白云石粉、玻璃鳞片、高铝耐火粉、蓝晶石粉
- 主营：铝矾土、线圈胶泥、感应电炉炉衬、酸性炉衬材料、中性炉衬材料、捣打料、干振料、加热炉浇灌料、硅质打炉料、中间包可塑料、可塑快速修补料、石英砂、中频炉炉衬料、高岭土、透热炉打结料、橡胶颗粒、氢氧化钙、机制木炭、膨润土、绿泥白泥修补料、火山石板材、氧化钙、凹凸棒土粉、沸石粉沸石颗粒
- 主营：氧化钙、重晶石粉、沉淀硫酸钡、萤石粉、硅藻土、高岭土、铁砂、漂珠、海泡石、珍珠岩、滑石粉、膨润土、铝矾土、木粉
- 主营：耐火材料、硅藻土粉、白云石粉、耐火材料铝土矿、贝壳粉、高岭土、滑石粉、石英砂、金刚砂、碳酸钙、玻璃微珠、石墨粉、远红外粉、石英粉、麦饭石粉、沸石粉、重钙粉、轻钙粉、高纯负离子液、膨润土、赤石脂粉、鹅卵石雨花石、彩色石子、活性白土、膨胀石墨、硅酸锆
- 主营：贝壳粉、过滤水、托玛琳、铝土矿、火山石、塑料pvc、汗蒸房、陶瓷粉、轻钙粉、水性涂料、造纸涂料、陶瓷玻璃、陶瓷涂料、美甲超白、打磨去锈、多肉种植、陶瓷胚料、烧高岭土、研磨材料、净水滤料、耐火材料、稳定水质、鱼池过滤、白色纳米、吸附甲醛、复合肥料
- 主营：电气石粉托玛琳粉、麦饭石、长石粉、高铝耐火骨料、石棉绒海泡石、膨润土、远红外粉、高岭土、滑石粉、碳酸钙粉、铝矾土、云母粉、石膏粉、反射隔热粉、玻璃砂玻璃粉、石英砂、金刚砂、沸石粉、凹凸棒粉、重晶石粉沉淀硫酸钡、石灰粉、锗石粉、白沙子、圆粒海沙、珍珠岩、蛭石
- 主营：石英砂、金刚砂、鹅卵石、骨料铝矾土粉、白卵石、白沙子、重钙粉、黄金砂、白云石、重晶石粉、珊瑚石、膨润土、玻璃珠、蛭石、雪花白、玻璃砂、发光石、轻钙粉、灰钙粉、蛭石粉、珍珠岩、夜光石、水磨石、火山石、铁粉、金刚砂地坪材料
- 主营：蛭石、云母、漂珠、铝矾土骨料、硅藻土、膨润土、高岭土、防火涂料、萤石、石英砂、麦饭石、铝矾土、电气石、彩砂、鹅卵石、海泡石、重钙粉、重晶石、木粉、蛭石粉、氧化钙、生物质颗粒、贝壳彩片、莫来砂、蛭石板、沸石粉
- 主营：云母、蛭石、石英砂、彩砂、海泡石、电气石、岩片、珍珠岩、滑石粉、白云石、氧化钙、氢氧化钙、碳酸钙、玻璃块、陶瓷球、锗石粉、生物燃烧颗粒、高岭土、膨润土、铝矾土、木粉、松针土、红土
- 主营：滑石粉、硅藻土、重晶石粉、配重铁砂、蛭石粉、萤石粉、重钙粉、氧化钙、麦饭石球、电气石粉、重质碳酸钙、海泡石纤维、莫来砂、膨润土、漂珠、贝壳彩片、云母、石英砂、蛭石、木粉、夜光石、生物质颗粒、铝矾土、粉煤灰漂珠、杨木粉