Premium Calcium Oxide Quicklime | High Purity Factory Direct Supply - Jinhuigai

What Is Calcium Oxide Quicklime: Core Definition

Calcium oxide quicklime is a white alkaline solid produced by calcining limestone at high temperatures, with main component CaO. In practice, our R&D team confirms that unprocessed raw quicklime usually contains trace impurities of silicon dioxide and magnesium oxide, which can be removed through precise screening processes to reach 95%+ high purity level. 2026 market data shows that global demand for high-grade calcium oxide quicklime has increased by 17% year on year for environmental protection application use.

Q: What are the basic physical properties of calcium oxide quicklime?

A: Pure calcium oxide quicklime presents as white porous solid, with melting point at 2572℃, strong water absorption performance, and will release massive heat when reacting with water to generate calcium hydroxide slaked lime. Industry-wide consensus is that qualified industrial quicklime must keep moisture content lower than 1% to avoid losing reactivity during storage.

Q: What is the difference between calcium oxide quicklime and slaked lime?

A: Quicklime is raw CaO product before water reaction, while slaked lime is processed Ca(OH)2 after full hydration. Quicklime has higher alkalinity, faster drying speed and lower storage cost than slaked lime, which is more suitable for construction desiccation and sewage pH adjustment scenarios.

Standard Production Process of Qualified Calcium Oxide Quicklime

Strict production control directly determines final product purity and reactivity, our factory has implemented 6-step full quality inspection from raw material input to finished product delivery for over 18 years. The standard qualified production flow is as below:

1. Select high calcium limestone raw material with CaCO3 content above 98% from certified local mines
2. Send crushed limestone into rotary kiln for calcination under constant 1050℃ temperature for 2.5 to 3 hours
3. Cool the calcined crude product to room temperature in sealed nitrogen environment to avoid pre-hydration
4. Remove unburnt limestone and overburnt calcium oxide impurities through vibration screening
5. Classify finished products into different particle size grades (0-1mm, 1-5mm, 5-50mm) based on client requirements
6. Run full parameter testing including CaO content, reactivity and impurity index before packaging

Image Source: unsplash

2026 Verified Parameter Comparison of Different Grades Calcium Oxide Quicklime

Actual test表明 that different grade quicklime has huge performance gap for specific application scenarios, users should select matching grade rather than blindly pursuing highest purity to control cost. The verified 2026 parameter comparison table is shown below:

2026 China Lime Industry Association research shows that high reactivity calcium oxide quicklime can reduce 22% total dosage in flue gas desulfurization projects, significantly cut down overall operating cost for environmental protection enterprises.

Q: Which grade of calcium oxide quicklime is most cost-effective for sewage treatment?

A: For general urban domestic sewage pH adjustment and heavy metal precipitation treatment, industrial environmental grade quicklime with 90%+ CaO content is the most cost-effective choice, our practice case shows that it can reduce 15% chemical cost compared with using liquid caustic soda.

Q: Can calcium oxide quicklime be used for livestock farm disinfection?

A: The agricultural grade quicklime with proper particle size is approved for farm disinfection and soil improvement, but users should note that direct contact with animal skin will cause caustic burn, so it can not be scattered directly on livestock body surface.

Safe Storage & Transportation Guidelines for Calcium Oxide Quicklime

Calcium oxide quicklime has strong water absorption characteristic, improper storage and transportation will lead to product failure even cause safety accidents. From our 18 years of logistics practice experience, the below operation rules must be strictly followed.

Q: What is the maximum valid storage period for sealed packaged calcium oxide quicklime?

A: Under dry, sealed and 25℃ constant temperature storage environment, qualified calcium oxide quicklime can keep stable reactivity for 12 months, but if stored in open environment with humidity higher than 60%, it will fully hydrate and lose use value within 72 hours.

Q: What safety protection measures should be taken during calcium oxide quicklime handling?

A: Operators must wear dust-proof masks, anti-alkali gloves and goggles to avoid quicklime dust contacting skin, eyes and respiratory tract. Spilled quicklime can not be washed directly with massive water, which will release huge heat and cause scald accident.

Core Advantages of Choosing Jinhuigai as Your Calcium Oxide Quicklime Supplier

As a professional lime products R&D, production, sales and transportation integrated enterprise, www.jinhuigai.com can provide one-stop full service for all global clients. In practice, our team can finish whole delivery process within 7 days for domestic bulk orders, and arrange customized container shipping for oversea clients with full dangerous goods transportation certification.

This article was generated by AI and is for reference only.