LUMP QUICKLIME (CALCIUM OXIDE)
Minben Lump Quicklime is designed for strength and durability in high-temperature, long-process operations. These robust, high-purity CaO lumps deliver sustained reactivity, making them a fundamental material for applications such as conventional steelmaking (BOF/EAF) and calcium carbide production.
In these processes, the quicklime must withstand severe physical and thermal conditions while consistently delivering reliable metallurgical or chemical performance.
Specifications
Minben Lump Quicklime is characterized by high structural integrity and excellent thermal stability, which are critical for reliable performance in intense, high-temperature industrial processes.
Chemical Composition
Available CaO ≥ 92%
SiO2 ≤ 1.0%, S ≤ 0.015%
Physical Properties
Lump size 15–50 mm
Reactivity ≥ 400 mL
Key Features
High reactivity
Low fines generation
Core Advantages
Controlled Reaction Kinetics
Uniform particles deliver stable, controllable reaction rates, preventing localized overheating or under-reaction—ideal for continuous processing systems.
Outstanding Process Compatibility
Combines sufficient chemical reactivity with excellent reactor permeability, making it an optimal additive for sintering and pelletizing operations.
Cleaner Operating Conditions
Compared with powdered quicklime, on-site dust emissions are significantly reduced, contributing to improved workplace safety and reduced material losses.
Customizable Granulometry
Particle size can be precisely customized according to specific equipment and process needs.
Key Applications
Iron & Steel Metallurgy
Used as a slag-forming agent in BOF and EAF steelmaking to remove sulfur, phosphorus, and other impurities.
Alumina Industry
Applied in the Bayer process digestion stage to support alumina extraction and process stability.
Calcium Carbide Production
Reacts with coke in electric furnaces to produce calcium carbide with improved energy efficiency.
Glass Fiber and Glass Manufacturing
Introduces CaO as a flux to improve melting efficiency, chemical durability, and mechanical strength.
PCC Feedstock
Used as a premium raw material for high-grade PCC, supporting whiteness, reactivity, and crystal quality.
Iron & Steel Metallurgy
The preferred slag-forming agent for Basic Oxygen Furnaces (BOF) and Electric Arc Furnaces (EAF), enabling efficient removal of impurities such as sulfur and phosphorus from molten steel.
Alumina Industry
Used in the digestion stage of alumina production via the Bayer process.
Calcium Carbide Production
Reacts with coke in electric furnaces to produce calcium carbide. High-purity lump lime can significantly reduce power consumption in calcium carbide production.
Glass Fiber and Glass Manufacturing
Introduces calcium oxide as a flux, improving chemical durability and mechanical strength of glass products.
Precipitated Calcium Carbonate (PCC) Feedstock
Premium lump lime is the starting material for high-grade PCC production. Its high whiteness and reactivity play a critical role in determining crystal morphology and final product quality.
Quality Report
The product meets and exceeds the national standards of P.R. China for metallurgical lime, making it suitable for high-demand industrial applications.
| Indicator Name | Content % (Analysis Result) | National Standard of P.R. China – Metallurgical Lime (Special Grade) | National Standard of P.R. China – Metallurgical Lime(Grade I) |
|---|---|---|---|
| CaO | 94.28% | ≥ 92.0% | ≥ 90.0% |
| MgO | 0.41% | < 5.0% | < 5.0% |
| SiO2 | 0.20% | ≤ 1.5% | ≤ 2.5% |
| S | 0.018% | ≤ 0.020% | ≤ 0.030% |
| Loss on Ignition (LOI) | 0.14% | ≤ 2.0% | ≤ 4.0% |
| Reactivity (4 mol/L HCl, 40 ± 1 °C, 10 min) | 408 mL | ≥ 360 mL | ≥ 320 mL |
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