Drying, Cooling & Calcination
Rotary drums and thermal equipment for large-scale solids processing.
View technology →
Process equipment engineering since 1976
50+ years engineering solids processing and fertilizer plants
We design, manufacture and commission equipment and complete lines for solids processing, with more than 700 installations delivered across five continents.
+50
Years of experience
+700
Installations delivered
5
Continents
+40
Countries served
What we do
Four technologies, one engineering team
We cover the full solids processing chain — from a single machine to a complete production line.
Crushing, Grinding & Lump Breaking
Size reduction matched to each material and process throughput.
View technology →Screening & Classification
Screens, trommels and classifiers for solids separation and sizing.
View technology →Materials Handling & Storage
Conveying, silos and storage systems for bulk solids.
View technology →What we offer
Support across the entire equipment life cycle
From design through to day-to-day operation, backed by our own service team.
Engineering & Design
Custom design and calculation of solids processing equipment and installations.
View service →Manufacturing & Supply
Manufacture and supply of the equipment our engineering team designs.
View service →Technical Assistance
Support during commissioning and throughout the equipment's service life.
View service →Revamping & Retrofit
Upgrading existing equipment and installations to improve performance.
View service →Spare Parts
Original spare parts supply to minimise plant downtime.
View service →Monitoring
Continuous equipment monitoring to anticipate maintenance.
View service →Where we work
Industries we serve
Fertilizers is our core industry, but our engineering applies to any solids processing operation.
Fertilizers
Equipment and complete lines for fertilizer granulation, drying and processing.
Chemicals
Solids processing solutions for industrial chemical operations.
Minerals
Crushing, grinding and handling of bulk minerals.
Biomass
Equipment for processing and handling bulk biomass.
Ceramics
Solids processing applied to ceramic raw materials.
Food
Handling and storage of solids for the food industry.
Why COMSPAIN
In-house engineering, start to finish
50+ years of experience
A proven track record designing solids processing equipment worldwide.
In-house engineering
Every machine designed, calculated and developed by our own technical team.
Complete equipment supply
Manufacture, erection and commissioning of the equipment we design, through a single technical contact.
After-sales and spare parts
Technical service and spare parts supply to protect your equipment's service life.
Our track record
Awards and recognition
Over the years our export work, business excellence and financial soundness have been recognised by leading institutions.
CEPYME “Óscar” Award — Company of the Year
Export Award, Madrid Chamber of Commerce and Industry
Awarded on multiple occasions
Nominated for the Prince of Asturias Awards for International Business Excellence
For our international reach and competitiveness
Dun & Bradstreet “Prestige Rating Book” certificate
Sustained recognition over time
Quality
Certification
We operate under a Quality Management System certified to UNE-EN-ISO 9001:2015 by Bureau Veritas.
Download ISO 9001 certificate (PDF)Who trusts us
Who we work with
We do not publish the names of our end clients, for confidentiality. This is how we work with each type of partner.
Engineering & EPC contractors
Engineering and construction firms that design and build the complete plant and integrate our equipment into it.
Process licensors
Owners of the process or product technology, who approve our equipment for their licensed plants.
Specialists & end users
Manufacturers running the plant day to day, looking for reliable, low-maintenance equipment with solid after-sales support.
Projects
Reference projects
Browse our projects by equipment type, industry and location.
Manufacture, transport and installation · Fertilizers · International client
Rotary dryer drum delivered and installed on site
Manufactured at COMSPAIN's works, moved by special low-loader for the oversized load, then lifted and positioned at the client's plant with heavy-lift cranes. The whole…
Manufacturing & Supply · Fertilizers · International client
Four twin-rotor chain mills for high-capacity crushing
Design, manufacture and assembly of four twin-rotor chain mills for a fertilizer producer. Dual rotors with high-strength chain hammers for consistent size reduction,…
Revamping & Retrofit · Fertilizers · International client
On-site girth gear crack repair, equipment back in service in 3 days
A 260 mm transverse crack in a dryer girth gear — 12.5 tonnes, 35CrMo4 cast steel, in continuous operation since 1987. Replacing it would have meant months of lead time…
Manufacturing & Supply · Fertilizers · International client
Fluidised bed cooler for efficient product cooling
Manufactured at our works in Spain and installed on site, a fluidised bed cooler covers one of the most critical stages in fertilizer production: cooling the product…
Manufacturing & Supply · Fertilizers · International client
Coater drum for uniform granule coating
Manufactured at our works in Spain and installed on site, a coater drum for a fertilizer producer. Designed to apply a consistent, even coating across the whole product…
Manufacturing & Supply · Fertilizers (phosphates) · International export
Two rotary dryer shells for a dicalcium phosphate (DCP) plant
Manufacture of two large rotary dryer shells for a dicalcium phosphate (DCP) plant. From steel plate to fully welded, inspected and protected drum sections: each shell…
Manufacture and export logistics · Fertilizers · International export
Lump breaker tested, packed and ready for sea freight
From works test to final packing. After passing its running test at our workshop, this lump breaker was carefully packed for sea freight in a purpose-built timber crate,…
Technical Assistance · Fertilizers · International client
On-site welding and technical assistance on a fluidised bed cooler
Specialist welding support and technical assistance for repair work on a fluidised bed cooler, working inside the equipment to return it to full operating condition. You…
Revamping & Retrofit · Fertilizers · International client
In-situ riding ring grinding and repair, without dismantling the drum
When a riding ring shows wear, pitting or surface damage, replacing the whole drum is rarely the answer. COMSPAIN's field service team carries out in-situ riding ring…
Manufacturing & Supply · Fertilizers · Algeria
Handling and storage for calcium ammonium nitrate production at two plants
Supply of handling and storage equipment for two calcium ammonium nitrate (CAN) production sites in Algeria: belt conveyors for the finished product, storage silos for…
Manufacturing & Supply · Minerals · Tunisia
Six horizontal screens of 2,000 × 6,000 mm for a phosphate mine
Six horizontal screens of 2,000 × 6,000 mm installed and running at a phosphate mine. Horizontal screens work on a unidirectional vibration diagram produced by…
Manufacturing & Supply · Minerals · Brazil
Counterweighted horizontal screen of 2,000 × 7,000 mm for iron ore, 600 t/h
Horizontal screen of 2,000 × 7,000 mm with counterweight, installed and running on iron ore at a throughput of 600 t/h. Unidirectional vibration from a dual-shaft…
Manufacturing & Supply · Minerals · Spain
Horizontal coal cleaning screens of 2,000 × 7,000 mm, 2,000 t/h
Horizontal screens of 2,000 × 7,000 mm for coal cleaning, installed and running at a throughput of 2,000 t/h. They share the same engineering principle as the rest of…
Global reach
International presence
COMSPAIN equipment operating in more than 40 countries across five continents.
Technical documentation
Featured catalogues
Download technical information on our core technologies.
Frequently asked questions
What clients usually ask us
Quick answers about our equipment, industries and the way we work.
What kind of equipment does COMSPAIN manufacture?
We design and manufacture equipment and complete installations for solids processing: drying, cooling and calcination; crushing, grinding and lump breaking; screening and classification; and materials handling and storage — with particular expertise in the chemical and fertilizer industries.
Which industries does COMSPAIN work in?
We work mainly across six industries: Fertilizers, Chemicals, Minerals, Biomass, Ceramics and Food.
Do you carry out revamping or retrofit of existing installations?
Yes. Revamping and retrofit is one of our services: we upgrade existing equipment and installations to improve their performance.
Do you supply complete installations or only individual machines?
We cover the full solids processing chain — from a single machine to a complete production line — with in-house engineering and design, manufacture and supply.
Which countries has COMSPAIN supplied to?
COMSPAIN has equipment installed in more than 40 countries across five continents.
Do you supply spare parts and after-sales technical assistance?
Yes. Technical assistance, spare parts supply and equipment monitoring are in-house services we provide throughout the equipment's service life.
How long has COMSPAIN been in business?
COMSPAIN was founded in 1976 and has more than 50 years of experience designing and manufacturing solids processing equipment.
What certifications and standards does COMSPAIN equipment comply with?
COMSPAIN operates under a Quality Management System certified to ISO 9001:2015 by Bureau Veritas. Equipment is manufactured in accordance with the standards and certifications required by each project and destination market.
Let’s talk about your project
Tell us what you need and our engineering team will get back to you.