Overview
Quicklime blocks, chemically known as calcium oxide (CaO), are a fundamental industrial chemical widely used for moisture control and dehumidification. Produced by thermally decomposing limestone (calcium carbonate) in lime kilns at temperatures above 825°C, this material has been employed for centuries in construction, agriculture, and industrial processes. The block form offers practical advantages for controlled moisture absorption applications, particularly in storage facilities and transportation where humidity control is critical. Unlike powdered quicklime, the block form reduces dust generation while maintaining high surface area for effective moisture reaction. Industrial-grade quicklime blocks typically contain 85-95% CaO, with the remainder being various impurities depending on the source limestone.
Physical and Chemical Properties
As a white to grayish-white solid with a crystalline structure, quicklime blocks exhibit several distinctive physical and chemical characteristics. The material has a high melting point of 2,572°C and density of 3.34 g/cm³, making it stable under normal storage conditions. Its most notable chemical property is the exothermic reaction with water (hydration), producing calcium hydroxide (slaked lime) and generating significant heat. The hygroscopic nature of CaO makes it exceptionally effective for moisture absorption, capable of capturing up to 32% of its weight in water vapor. This reaction increases volume by about 30%, an important consideration for application planning. The alkaline nature of quicklime (pH ~12.4 in solution) also contributes to its antimicrobial properties when used in storage environments.
Main Applications
In industrial settings, quicklime blocks serve as cost-effective desiccants for large-scale moisture control. They are particularly valuable in agricultural storage facilities for grains and other hygroscopic commodities, where maintaining low humidity prevents mold growth and spoilage. The construction industry utilizes quicklime blocks for drying newly built structures and in mortar formulations. Other significant applications include water treatment processes, where quicklime adjusts pH and removes impurities, and in steel manufacturing as a fluxing agent. In emergency situations, quicklime blocks can be used for rapid dehumidification of flooded areas. The agricultural sector employs them for soil pH adjustment and as a component in certain pesticides and fungicides.
Safety and Storage
Proper handling of quicklime blocks requires strict safety precautions due to their caustic nature. Workers should wear protective equipment including gloves, goggles, and respiratory protection when handling broken blocks or dust. The exothermic reaction with water can cause thermal burns, and the alkaline dust can severely irritate eyes, skin, and respiratory tract. Storage must be in dry, well-ventilated areas with moisture-proof packaging intact until use. Bulk storage should be on pallets to prevent ground moisture absorption. Never store near acids or organic materials, as reactions may generate heat or flammable hydrogen gas. Facilities should have emergency eye wash stations and acid wash solutions (like vinegar) available for first aid treatment of quicklime exposure.
B2B Procurement Guide
When procuring quicklime blocks for industrial applications, several factors merit careful consideration. Purity levels (typically 85-95% CaO) directly affect performance, with higher grades commanding premium prices. Packaging options range from moisture-resistant bags for small quantities to bulk shipments in waterproof containers. Reliable suppliers should provide material safety data sheets (MSDS) and certificates of analysis. Transportation costs significantly impact total procurement expenses due to the material's weight, making local sources preferable when available. Buyers should evaluate the supplier's ability to provide consistent quality and timely deliveries, as quicklime's effectiveness diminishes if it begins hydrating before application. Consider ordering smaller test quantities before large purchases to verify performance.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：防汛沙袋、氢氧化钙、铺路鹅卵石、地基回填白灰面
- 主营：工业消石灰、矿山机械
- 主营：填充母料、工业级氧化钙、氧化钙、生石灰块、生石灰、石灰、石灰厂、熟石灰、石灰块、石灰粉、氢氧化钙
- 主营：发光石、轻钙粉、蛭石粉、萤石块、夜光沙、夜光石、云母粉、夜光粉、夜光砖、托玛琳、海泡石、硅藻土、萤石粉、萤石球、滑石粉、石英粉、电气石、蛭石片、氟化钙、彩砂、盐沙、石英砂、漂珠、碳酸钙粉
- 主营：石英砂、麦饭石、无烟煤滤料、石灰石、鹅卵石、粉煤灰、蛭石、过滤滤材、火山石、叶腊石
- 主营：彩色石子、彩沙、有机覆盖物、石灰块、火山岩、石英砂、彩色玻璃砂、蛭石、岩片、钙粉、鹅卵石、膨润土、粉煤灰、铝矾土、油田堵漏剂、高岭土、木粉、河沙、石膏粉、珍珠岩、陶粒、金刚砂
- 主营：干燥粉、氧化钙、营养补充剂、生石灰粉、环氧胶黏剂
- 主营：液碱、片碱、纯碱、生石灰熟石灰、粒碱、氯化钙、柠檬酸、葡萄糖、小苏打、磷酸、聚合氯化铝、元明粉、氢氧化钙
- 主营：工业尿素、氧化钙、碳酸钙、石灰块、高岭土、硅藻土、膨润土、硫酸钡、重晶石、三聚氰胺、氢氧化钙、工业盐、石英砂、碳酸氢钠、小苏打、轻质碳酸钙、融雪剂、海泡石、磁粉、铁粉、矿渣粉、纳米碳酸钙、活性钙、脱硫增效剂
- 主营：高岭土、铝矾土、高铝粉、生石灰粉、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：碳酸钙、高岭土、滑石粉、负离子、金刚砂、贝壳粉
- 主营：聚合氯化铝、氯酸钠、片碱、生石灰、石灰、纯碱、次氯酸钠、消泡剂、聚丙烯酰胺、聚合硫酸铁、液碱、氯化钾、小苏打、硫酸钡、元明粉、硫化钠、葡萄糖、氨水
- 主营：灰钙粉、氧化钙、吸收剂、石灰粉、消解熟石灰、块状生石灰原料、脱硫用生石灰、水处理熟石灰粉、氢氧化鑫安、活性轻质碳酸钙、纳米轻质碳酸钙、超白活性轻质碳酸、超白轻质碳酸钙、氢氧化钙颗粒、氧化钙颗粒、优质氢氧化钙、优质氧化钙、优质氢氧化钙颗粒、优质氧化钙颗粒、高纯氧化钙粉末、二氧化碳吸附剂、工业氢氧化钙粉、氢氧化钙颗粒料、高活性氧化钙、高活性氢氧化钙
- 主营：钛白粉、金刚砂、鹅卵石、石灰石块、高岭土、萤石粉、赤铁粉、空心漂珠、负离子球、重晶石粉、纤维喷涂棉、导电云母粉、海泡石纤维、晶体电气石、滑石粉、焦炭、金刚砂地坪料、合成云母粉、面包铁、灰漂珠、石英粉、氧化铁颜料、酞菁颜料、硅灰石粉、氧化钍、导电粉
- 主营：重钙粉、白云石、石英砂、消石灰、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：兽药包装机、颗粒包装机、粉剂包装机、防潮生石灰块包装机、液体包装机、多列包装机、颗粒灌装机、液体灌装机，、粉剂灌装机、二维码采集系统、全自动包装流水线
- 主营：石英砂、石英粉、碳酸钙、白云石、白云石粉、重钙粉、轻钙粉、白沙、白石子、高岭土、煅烧高岭土、膨润土、氢氧化钙、染色石子、染色彩砂、麦饭石粉、凹凸棒土粉、蛭石粉、滑石粉、氧化钙、珍珠岩、硅藻土、白陶土、火山石、金刚砂、铁钢砂、鹅卵石、沸石粉、重晶石粉、长石、铝矾土