Overview
Quicklime building filler, chemically known as calcium oxide (CaO), is a fundamental material in construction and industrial applications. Produced by heating limestone (calcium carbonate) to high temperatures, it undergoes a chemical transformation that removes carbon dioxide, leaving behind the highly reactive quicklime. This material has been used for centuries in building applications due to its ability to harden when mixed with water (a process called slaking) and its excellent binding properties. In modern construction, it serves multiple purposes from soil stabilization to mortar production, offering both structural and chemical benefits to building projects.
Physical and Chemical Properties
Quicklime appears as a white or grayish-white crystalline solid at room temperature, available in both powder and lump forms. Its high melting point (2,572°C) makes it useful in refractory applications. The material is highly reactive with water, producing calcium hydroxide (slaked lime) and releasing significant heat in an exothermic reaction. Chemically, quicklime is a strong base with a pH of 12.4 when dissolved in water. It reacts violently with acids and serves as an effective desiccant due to its hygroscopic nature. The density of quicklime is approximately 3.34 g/cm³, though this can vary depending on the physical form and purity of the material.
Main Applications
In construction, quicklime serves as a crucial component in soil stabilization, particularly for clay-rich soils where it improves load-bearing capacity and reduces plasticity. When mixed with water and sand, it forms lime mortar, known for its flexibility and self-healing properties that make it ideal for historic building restoration. Industrial applications include steel manufacturing (as a flux to remove impurities), water treatment (for pH adjustment and softening), and chemical production (as a precursor for various calcium compounds). The building filler grade typically has a purity of 90-95% CaO, with the remainder consisting of magnesium oxide and inert materials.
Safety and Storage
Quicklime requires careful handling due to its caustic nature. Direct contact can cause severe skin burns and eye damage, necessitating the use of personal protective equipment including gloves, goggles, and dust masks. The material should be stored in moisture-proof containers in a dry, well-ventilated area away from incompatible substances like acids and organic materials. When quicklime reacts with moisture, it generates significant heat (up to 150°C) and can cause thermal burns. Fire hazards exist when stored near combustible materials due to this exothermic reaction. Emergency procedures should include using dry sand or special Class D extinguishers for fires, as water application would intensify the reaction.
B2B Procurement Guide
When procuring quicklime for construction purposes, buyers should specify the required purity level (typically 90-95% CaO for building applications) and particle size distribution. Packaging options range from bulk shipments for large projects to 25kg moisture-resistant bags for smaller quantities. Quality indicators include low residual carbonate content and consistent reactivity. Reputable suppliers should provide material safety data sheets (MSDS) and certificates of analysis. Transportation requires dry conditions, and bulk shipments often use specialized tanker trucks with pneumatic discharge systems to prevent moisture absorption during transit.
Related Manufacturers
- 主营：重钙粉、白云石、石英砂、金刚砂、高岭土、陶土粉、重晶石粉、石英粉、膨润土、橡胶粉、铝矾土、麦饭石粉、蛭石、滑石粉、轻质碳酸钙、凹凸棒土、长石粉、粘土球、白云石粉、硅微粉、珍珠岩粉、偏高岭土粉、氧化钙、氢氧化钙
- 主营：暖宝宝专用蛭石、高岭土、熟石灰、工业级生石灰、硅藻土、氢氧化钙、滑石粉、碳酸钙、沸石粉、膨润土、铸石粉、海泡石粉、透明粉、硅酸铝粉、贝壳粉、氧化钙、矿粉、轻钙、海泡石纤维、水镁石、石灰石粉、金玉明砂、彩砂、浴沙、灰钙
- 主营：填充母料、工业级氧化钙、石灰、生石灰块、生石灰、氧化钙、氢氧化钙、石灰厂、熟石灰、石灰块、石灰粉
- 主营：石英砂、金刚砂、金刚砂地坪材料、白云石、蛭石、云母、轻钙粉、重钙粉、重晶石粉、质感砂、鹅卵石、白沙子、火山石、方解石、高岭土、球场砂、草坪砂、石英砂滤料、滑石粉、膨润土、凹凸棒土、橡胶粉、陶土粉、麦饭石粉、石英粉
- 主营：氧化钙、氢氧化钙、氧化钙块料、氧化钙粉料、氧化钙颗粒、200目氢氧化钙、400目氢氧化钙、石灰石、超细氢氧化钙、高纯度熟石灰、细粉熟石灰、块状氢氧化钙、低杂质熟石灰、轻质熟石灰、散装熟石灰、无尘氢氧化钙、食品级熟石灰、工业级氢氧化钙、烟气脱硫氢氧化钙、土壤改良熟石灰、高纯度氢氧化钙、化工熟石灰、废水处理氢氧化钙、高白度氢氧化钙、块料氧化钙
- 主营：熟石灰、氧化钙、电石渣、生石灰、高钙白灰、氢氧化钙、白灰块、白灰、石灰
- 主营：加剂瓷砖胶、快速修补料、轻质抹灰石膏、建筑灌浆料、无收缩灌浆料、绿色金刚砂地坪、路面修补料、水泥路面修补料、轻质石膏抹灰、粉刷石膏、水泥基灌浆料、灌浆料、工业灌浆料、面层抹灰石膏、抗裂抹灰石膏、瓷砖胶、金刚砂地坪、金刚砂骨料、水泥道路快速修补料、高强无收缩灌浆料、混凝土修补灌浆料、轻质石膏砂浆、石膏抹灰砂浆、轻质石膏、抹灰石膏
- 主营：气凝胶粉、气凝胶粉末、亲水气凝胶粉体、气凝胶隔热填料、气凝胶保温粉、纳米气凝胶粉体、疏水气凝胶粉、纳米气凝胶块、气凝胶块体、气凝胶保温块、气凝胶自然块料、气凝胶吸油颗粒、气凝胶石油吸附颗粒、纳米气凝胶吸油颗粒、石油吸附颗粒、气凝胶保温涂料、气凝胶隔热涂料
- 主营：硫酸钡
- 主营：洗手液、洗手粉、珍珠岩、硅藻土填料、建筑保温填缝、过滤剂、防火颗粒、防火材料、隔热屋顶、隔音填充、玻化微珠、保温砂浆、保温园艺、膨胀珍珠、土壤涵养、栽培基质、培育基质、保温颗粒、保温材料、保温使用、保温施工原料、保温填充骨料、轻质隔热骨料、保温隔热材料、外墙保温系统
- 主营：覆膜砂、铸造覆膜砂、石英砂、石英粉、重晶石粉、圆粒砂、圆粒石英砂、硅石粉、白色硅微粉
- 主营：滑石粉
- 主营：石英砂、麦饭石、无烟煤滤料、鹅卵石、石灰石、粉煤灰、蛭石、过滤滤材、火山石、叶腊石
- 主营：天然鹅卵石、雨花石、彩色石子、蛭石、营养土、火山石、黑色金刚砂、地坪五彩石、变压器鹅卵石、鹅卵石滤料、水处理鹅卵石、分目烘干砂、石英砂、黑白石英砂
- 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：云母、蛭石、轮胎粉、彩砂、蛭石板、阻火模块、石英砂、无石棉矿物复合纤维、木质纤维、海泡石
- 主营：石英砂、无烟煤、活性炭、沸石、火山石、增碳剂、堇青石粉、活性白土、硅藻土、高纯石英砂、椰壳活性炭、无烟煤滤料、煅烧高岭土、沸石颗粒、火山石颗粒、工业硅藻土、漂白土、萤石粉、米白圆粒沙、五彩玉石米、五彩玉石、硅酸铝纤维、重钙、轻钙
- 主营：云母粉、高岭土、滑石粉、云母片生产厂家、硫酸钡、蛭石、珍珠岩、玻璃鳞片、岩片、石英粉
- 主营：高岭土、铝矾土、高铝粉、重晶石粉生产厂家、炉衬料、石英砂、石英粉、长石粉、高铝砂、玻璃粉、电熔镁砂、锆英砂、金刚砂、矿渣粉、重晶石粉、彩砂、重金石、钙粉
- 主营：氧化铁颜料、沸石粉、铁砂、电气石粉、氧化铁棕、除渣剂、橡胶粉、氧化铁灰、四氧化三铁、高岭土、玻璃粉、磁粉、氧化铁黑、滑石粉、减水剂、碳酸钙、萤石粉、红色颜料、氧化铁黄、硅微粉、耐火材料、氧化铁红、伊利石粉、氟化钙粉、贝壳粉