Caleras San Juan S.a.

What Caleras San Juan S.a. does

Caleras San Juan S.A. is an Argentine privately held mining company founded in 1952, headquartered in the city of San Juan with its industrial plant in Cienaguita, Department of Sarmiento. The company extracts limestone and dolomite from Precordillera concessions with proven reserves of 150 million tonnes of limestone (>96% CaCO3) and 74 million tonnes of dolomite, sufficient for over 100 years of production at maximum capacity. Its core activity is the calcination and processing of these minerals into quicklime, hydrated lime, dolomitic lime, natural calcium carbonate, and dolomitic products for industrial and construction end markets.

The production platform is anchored by four Swiss-origin MAERZ parallel-flow regenerative kilns of 300 tonnes per day each, supplemented by West vertical shaft kilns of 150 TPD and Italian-gas revamped kilns, with all calcination load supplied by a 2.3 MW on-site photovoltaic park. Caleras San Juan manufactures a structured product portfolio: industrial quicklime (ground and crushed calcic grades, dolomitic grade), chemical hydrated lime (Carbometal), road-construction hydrated lime (Vial), construction hydrated lime sub-brands (Huarpe, Carbocal), and non-calcined natural calcium carbonate and dolomites. The product mix is sold in multiple packaging formats — bags, bulk, and bulk bags — through direct sales channels. The company holds the distinction of being the first 100% Argentine-capital firm to simultaneously certify ISO 9001, ISO 14001, and ISO 45001 (recertified August 2025).

Caleras San Juan generates revenue through direct B2B sales to industrial customers across at least nine end markets: mining (copper, gold, silver, zinc, lead, nickel, lithium), steel and metallurgy, construction, chemicals, sugar mills, paper mills, tanneries, water treatment, and agriculture. Distribution is direct from the San Juan commercial/administration office for the domestic market, complemented by a Chilean storage depot (established 2020) for cross-Andean exports and a 36% stake in Calera Los Tilianes (Jujuy) for Northwest Argentine coverage. Pricing is quote-based and negotiated per contract, volume, and customer. The customer base includes notable mining names such as Grupo Luksic's Los Pelambres copper mine, which is pursuing a direct cordilleran supply route from San Juan.

Name

Caleras San Juan S.a.

Legal name

Caleras San Juan S.A.

Website

https://calerassanjuan.com

Company type

Private

Founded year

1952

Operating status

Operating

Headcount range

51–100 employees

Short description

Caleras San Juan S.A. is an Argentine privately held mining company that calcines limestone and dolomite into quicklime, hydrated lime, and calcium carbonate products using Swiss MAERZ kilns and on-site solar power, supplying mining, steel, chemical, and construction customers across Argentina and Chile.

Ownership category

akta.pro rank

Product category

Industrial Lime Manufacturing

NAICS

Lime Manufacturing (32741), Crushed and Broken Limestone Mining and Quarrying (212312)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC)

Keywords

• Lime manufacturing
• Calcium carbonate production
• Dolomite mining
• Industrial minerals
• Construction binders

Headquarters

HQ city

San Juan

HQ country

Argentina

HQ region

Latin America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Lime and Limestone Product Sales: Caleras San Juan generates revenue from manufacturing and selling a broad range of lime products — including quicklime (cal viva) in ground and crushed forms, hydrated lime, dolomitic lime, and natural calcium carbonate — to industrial and construction customers. Revenue is derived from product volume sales across domestic and export markets (Argentina and Chile).

Go-to-market motion1 record

Distribution channels4 records

Marketing channels8 records

Core offering

Caleras San Juan S.A. is a mining company that extracts, calcines, and processes limestone and dolomite to manufacture quicklime (cal viva), hydrated lime, dolomitic lime, and natural calcium carbonate. Products are sold in multiple packaging formats (bags, bulk, and bulk bags) to industrial sectors including mining, steel, construction, chemicals, sugar, paper, tanneries, water treatment, and agriculture, serving customers across Argentina and Chile.

Product overview

Caleras San Juan S.A. is a mining company founded in 1952 with over 70 years of experience in lime and derivative product manufacturing. The company operates as a unified production platform with two main product lines: Industrial products (CALES) including Cal Viva Cálcica Molida, Cal Viva Cálcica Triturada, Cal Viva Dolomítica Triturada, Cal Hidratada Química Carbometal, and Cal Hidratada Vial; and Construction products under the Huarpe and Carbocal sub-brands including Cal Viva Molida Huarpe, Cal Hidratada Huarpe, and Cal Hidratada Carbocal. The company also produces non-calcined products including Carbonato de Calcio Natural and Dolomías. All products are manufactured at the company's plant in Cienaguita, San Juan, using Swiss MAERZ kiln technology and a 2.3 MW photovoltaic solar plant for energy.

Differentiator

Problem solved

Functional benefit

Brands

• Carbometal: Chemical hydrated lime brand with high percentage of calcium hydroxide for superior purity.
• Huarpe
• Carbocal
• Vial

Products and services

• Cal Viva Cálcica Molida (CCVM) - Industrial Quicklime in powdered form for industrial applications, featuring exceptionally high fineness achieved through the company's mills combined with high-quality lime. Used in mining, steel, chemical, and environmental applications.
• Cal Viva Cálcica Triturada Quicklime in crushed form produced from high-quality raw material under controlled calcination conditions, yielding reactive lime with high calcium oxide concentration for industrial uses.
• Cal Viva Dolomítica Triturada Crushed dolomitic quicklime produced from high-quality dolomites, yielding magnesium-rich lime with low insoluble percentages. Used in steel industry, construction, and mining applications.
• Cal Hidratada Química Carbometal Chemical hydrated lime with high percentage of calcium hydroxide, ensuring superior purity for industrial applications requiring high chemical reactivity.
• Cal Hidratada Vial Hydrated lime designed for road construction and soil stabilization with high water absorption capacity, also used in siderurgy, paint, mining, water treatment, and effluent treatment.
• Cal Viva Molida Huarpe Ground quicklime under the Huarpe brand for construction applications, with high purity, great reactivity, and versatility for masonry, thick renders, and construction mixes.
• Cal Hidratada Huarpe Hydrated lime under the Huarpe brand for construction, designed for fine renders achieving impeccable and durable finishes with greater plasticity and resistance.
• Cal Hidratada Carbocal

Quantifiable outcome

• 600,000 tonnes per year production capacity with three MAERZ kilns operational
• +3 more outcomes

Named customers1 record

Segments10 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Calera Los TilianescoreStrategic or Co-development Partner · 1 January 2023In 2023, Caleras San Juan acquired 36% of Calera Los Tilianes, a lime producer located in Jujuy province. Los Tilianes produces over 180,000 tonnes of lime annually and supplies customers across the Northwest Argentine (NOA) region. This investment extends Caleras San Juan's geographic footprint and production capacity into a strategically important mining region.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Graymont: Canadian family-owned lime and dolime producer with North American and Asia-Pacific operations. Highly comparable as a privately held, vertically integrated lime manufacturer with diversified industrial end markets.
• Lhoist Group: Belgian-headquartered global leader in lime, dolime, and mineral products serving mining, steel, construction, and environmental markets. Most directly comparable as a vertically integrated lime producer with multi-mineral reserves and global kiln technology.
• Carmeuse: Belgian global lime and minerals producer with operations across the Americas, Europe, and Africa. Directly comparable as a high-purity lime and dolime manufacturer serving steel, mining, construction, and environmental applications.

Direct peers

• Mississippi Lime Company: US-based high-purity lime producer supplying industrial markets including mining, steel, water treatment, and chemicals. Comparable as a calcined lime specialist with multi-plant capacity and B2B industrial focus.
• Grupo Calidra: Mexico's largest lime producer, vertically integrated from quarry to calcination, serving Latin American industrial markets. Closely comparable regional peer in product range (quicklime, hydrated lime, dolomitic lime) and customer segments.
• Cal Industrial (Mexico): Mexican industrial lime producer serving mining, steel, and construction in Latin America. Directly comparable as a regional lime specialist competing for similar mining and industrial customers across Latin America.

Regional players

• Holcim Argentina: Argentine subsidiary of Holcim Group, one of the country's largest cement and aggregate producers. Comparable as a regional industrial mineral operator with overlapping customer base in construction and infrastructure.
• Cementos Avellaneda: Major Argentine cement producer (Holcim/Buenaventura joint venture) operating limestone quarries and kilns. Comparable as an Argentine industrial mineral processor reliant on limestone inputs and serving construction/infrastructure customers.
• Cementos Argos: Colombian-headquartered cement and concrete producer with operations across the Americas. Comparable as a vertically integrated industrial mineral company competing for similar construction and infrastructure customers in Latin America.
• Caleras del Pacífico (Chile): Chilean lime producer serving the Chilean mining and industrial markets. Comparable as a regional competitor targeting the same Chilean copper mining customers (e.g., Los Pelambres) that Caleras San Juan is actively pursuing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/caleras-san-juan-s-a
• Instagraminstagram.com/calerassanjuan

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Caleras San Juan S.a.