UNEARTHING EXCELLENCE.
POWERING INDUSTRIES.
Premium limestone solutions engineered for mining, metallurgy, and infrastructure. Congo Investment SAS delivers high-purity limestone that helps industries operate efficiently, sustainably, and at scale across the Democratic Republic of Congo.
CONGO INVESTMENT SAS.
─────── ABOUT THE COMPANY
Trusted Limestone Partner for Industrial Growth
Trusted Limestone Partner for Industrial Growth Congo Investment SAS is a leading limestone producer based in Likasi, Haut-Katanga, DR Congo. Since 2020, we have supplied premium-grade limestone to mining and industrial companies that demand consistent quality, reliable supply, and dependable service.
With a production capacity of 150,000 metric tons per year and limestone containing over 90% calcium carbonate (CaCO₃), we support operations that power some of Africa’s most important industries
99 %+
CaCO₃ Purity
150K MT
Annual Capacity
4 +
Product Sizes
7 +
Industrial Partners
─────── OUR STRENGTHS
Built on Quality.
Trusted by Industry.
Every metric ton we deliver is backed by precise extraction standards, geological expertise, and a genuine commitment to the industries powering Africa’s growth and infrastructure development.
01
Premium Limestone Quality
High-purity limestone engineered to meet demanding industrial specifications.
02
Reliable Production
A dependable supply chain designed to keep your operations running without interruption.
03
Mining Expertise
Years of experience serving copper and cobalt processing companies in the region.
04
Customer Commitment
Responsive service, long-term partnerships, and solutions tailored to your operational n
─────── PRODUCT DETAILS
Limestone Grades & Sizes
Available in four standard grades — all with verified CaCO₃ content between 85–92% — to precisely match processing requirements across every industry.
00 – 09 mm
CaCO₃: 90.5 – 92.6%
Chemical processing, pH regulation in ore solutions
00 – 10 MM
CaCO₃: 87.7 – 89.5%
Cement kiln feed, fine aggregate applications
10 – 25 MM
CaCO₃: 85.9 – 91.3%
Road base, construction aggregate, block manufacturing
25 – 50 MM
CaCO₃: 85.7 – 91.7%
Iron & steel flux, copper smelting, heavy construction
Limestone Grade Analysis — CaCO₃ / CaO / Ca / Acid Insoluble
Size (mm)
CaCO₃ %
CaO %
Ca %
Acid Insoluble %
00 – 09 mm
90.50 – 92.56
49.12 – 51.83
35.99 – 36.52
1.80 – 4.40
00 – 10 mm
87.71 – 89.50
50.12 – 52.12
35.90 – 35.99
2.60 – 3.90
10 – 25 mm
85.92 – 91.29
49.92 – 51.52
36.09 – 37.37
2.10 – 4.90
25 – 50 mm
85.65 – 91.66
47.96 – 51.33
36.26 – 37.66
1.60 – 4.10
─────── INDUSTRIES WE POWER
Supporting Africa's
Key Industries
Our limestone plays an essential role in industrial processes that drive economic development and infrastructure growth.
01 / 06
Copper & Cobalt Processing
Limestone rich in CaCO₃ regulates the pH of ore processing solutions and eliminates impurities, making it indispensable in the DRC’s dominant copper-cobalt sector.
02 / 06
Cement Manufacturing
Limestone is the primary raw material for clinker production. Our consistent CaO content makes it ideal for cement kilns operating at scale.
03 / 06
Iron & Steel Production
Used as flux during the smelting process to remove silica and other impurities from molten metal, improving final product quality.
04 / 06
Construction Materials
Crushed aggregate for road base, driveways, concrete foundations, block manufacturing, and architectural stone applications.
05 / 06
Chemical Processing
High-purity CaCO₃ is a key feedstock for industrial chemical applications including water treatment and paper manufacturing.
06 / 06
Infrastructure Development
Building stone for facades, flooring, retaining walls, and large-scale civil infrastructure across Central Africa.
────── OUR CORE VALUES
The Principles That Drive Us
Excellence
We strive for excellence in every aspect of our operations, from extraction and processing to customer service and delivery.
Integrity
We conduct our business with honesty, transparency, and accountability, building relationships founded on trust.
Quality
Quality is the cornerstone of our business. Every product we deliver reflects our commitment to consistency and reliability.
Safety
The health and safety of our employees, contractors, and communities remain our highest priority.
Sustainability
We are committed to responsible mining practices that protect naturak resources while suporting long-term economic development.
Parternship
We believe strong parternships create lasting sucess.Our customers growth is our shared achievement.
─────── OUR OPERATIONS
─────── BY THE NUMBERS
Delivering Performance Every Day
Annual Production Capacity
Calcium Carbonate Purity
Year Founded in Likasi, DRC
Commitment to Quality & Customer Satisfaction
Let's Discuss Your
Limestone Requirements
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