CDE Asia: Leader in Washing Crushed Rock Fines

The utility of sand & aggregate washing in the modern construction industry

Much of the sand currently used in the construction industry within India is sourced from rivers but this trend is starting to decline for a number of reasons. Key on the list of negatives is the potential environmental impact of river dredging and many states have already banned the exploitation of river sand, forcing producers to seek alternatives. Environmental legislation is not the only driving force, as the constant drive to achieve World class quality within the construction sector has also had an impact on the types of materials producers are prepared to use.

Production of Sands
As a natural substance, sand is highly variable in grade and quality depending upon the source location, method of extraction, and even the season. What concrete producers in particular strive for is consistency. This is why virtually all construction sand in highly developed markets including Europe is washed – to achieve consistency and to ensure full compliance with construction sand specifications which limit the percentages which should be represented across the size ranges. Of particular concern to quality concrete producers and building sand buyers is the percentage of undersize within the sand; most notably the fraction below 75µm which should be below 4-5%.

Production of dual sands suitable for both concrete and plastering work

Production of Sands
Washing sand in an efficient system is the recognised way to control fluctuations in the feed grade and also ensures consistent adherence to material norms. Various technologies exist ranging from screw classifiers through to modern hydrocyclone based systems such as those offered by CDE, a leading UK manufacturer now based in India. Selection of the correct system is essential to ensure optimal efficiency, particularly in achieving the correct balance of waste removal versus fine particles retention. To this end, CDE offers a highly customised approach and are able to cater to a diverse range of capacities and processing requirements. One of the great advantages of the CDE sand washing plants is the production of dual sands, that is, the same equipment can give different grades of product for use in different applications. The scope of producing spray grade sand of 2mm along with construction sand of -5+2mm size , is one of the main features. The company is the largest supplier of sand & aggregate washing plants in the world. It can supply plants with a capacity of 50tph to as high as 2400tph. The range of feeds treated is wide and can accommodate all variations. With experience across many sectors, material types, and at an International level, CDE now offer their expertise directly to the Indian construction industry.

Why CDE?

CDE's innovative systems allow fine control of the required separation which not only gives operators much greater control over their products but also opens the industry to a much greater range of potential raw materials. At the top of the list is crushed rock (manufactured sand) as a natural sand substitute. Minus 6mm crushed rock fines are a typical by-product of the crushing sector and generally have little market value. These fines are now seen as a useful commodity in many markets as in most cases they can be washed to produce sand ideal for concrete production. In many cases, the product is actually better than naturally occurring sands which are often too fine and lack body in the plus 300 micron range.

Production of Sands


Production of Sands
CDE washing systems are environment –friendly and are packaged with water recycling and waste management as an integral part of the project. Water recycling system provides for substantial reduction in water consumption whereas proper waste management ensures there is no pollution from the use of the technology.

CDE are the European leader in washing crushed rock fines, often referred to as 'manufactured sand.' CDE are now actively targeting producers in India to help them get real value from their manufactured rock fines. Washing crushed rock fines to produce quality concrete sand in place of natural sand is now a recognised practice in the UK and one of the main driving forces within many construction materials markets. The rapidly developing Indian construction sector and ready-mix manufacturers in particular, can only benefit through the use of the higher quality and more consistent raw materials which CDE equipment offers.

Production of Sands

NBMCW November 2009

Click Here
To Know More / Contact The Manufacturer
Please provide your details we will contact you as soon as possible
Choose Title from the listPlease let us know your name.
Please let us know your Designation.
Invalid Input
Please let us know your email address.
Please let us know your City.
Please let us know your Contact Number.
Please brief your query.
Our other value-added services:

To receive updates through e-mail on Products, Technologies, equipment, please Select the Product Category(s) you are interested in and click Submit. This will help you not only to save time but also to get best quote for right products from many manufacturers of the same category; it helps you to evaluate and negotiate the best price.

Equipment & Machinery
Invalid Input
Building Products
Invalid Input

Grundfos SCALA2 creates the perfect water pressure

In residences and commercial buildings, pressure boosting has become an important element in distributing water, especially with the onset of summer, to ensure that a consistent water pressure is maintained Read More ...

Goldmont revolutionizes underground mining bucket design with Hardox® wear plate with 25% lighter buckets

Goldmont Engineering, a manufacturer and supplier of parts and services to the mining, transport and construction industries, has produced an innovative loader bucket using specialty steels from global steel producer SSAB Read More ...

On A Roll Application Specific & Purpose Built Tyres

Manufacturers are constantly improving their tyres with research and development of better raw materials, new tread designs, along with advanced production systems, and stringent testing of the finished products, so that their tyres Read More ...

Engines: Transiting to Greater Power

Electronic engines will be the future of the CE industry as tighter BS1V emission norms come into effect in wheeled applications from Oct’20. The transition from mechanical engines to electronic engines will give better control of Read More ...

Liberty Safety Shoes: Wear More, Store Less

Ageing of safety shoes is an entirely normal process. To benefit from all the positive properties of a safety shoe, one must be aware of the limited product life of shoes. Ageing happens because the PU sole material is subject to Read More ...

Liberty: Importance of Safety Shoes at Workplace

More and more countries are embracing the mandatory safety shoes standards in order to guarantee protection at the workplace and are creating awareness on the importance of wearing safety shoes at work. Liberty’s Warrior brand of boots Read More ...

Choose an Application-Specific Construction Tire

The old saying ‘time is money’ rings particularly true when thinking of today’s construction industry. With an abundance of work and a shortage of labor, construction business owners need to make the most of every moment to maximize profits Read More ...

Liberty ‘Warrior’ Construction Shoes for Safety, Comfort & Durability

For a construction worker, the most important safety equipment is probably “a good pair of working shoes”. This, in fact, is a necessity as he is on his feet for long hours of the day and even at night, and quite often in dangerous site conditions such Read More ...

Liberty Warrior: Customer's Safety & Satisfaction is the Key

The Warrior brand from the house of Liberty is an acclaimed name in the construction industry for safety shoes. Designed to ensure utmost safety against extreme odds and to facilitate comfort during work, the Warrior work Read More ...

Gandhi High Speed Industrial Doors

High speed doors are typically designed to integrate with the traffic movements within your organization, whether pedestrian traffic, forklifts, vehicles or automated conveyors. For this reason, it is critical to plan the design and Read More ...

INTER TECH offers Marconite - a safe, sustainable earthing system

In today’s world of increasing attention to green and sustainable products, materials and solutions, the colour of the earth wire is also usually green. But has the earthing electrode been upgraded to a truly ‘green’ product Read More ...

Kaveri's Polymer Liners for Tipper Trucks: Non-sticky unloading of material

Bangalore-based Kaveri Ultra Polymers has been manufacturing polymer industrial products for use in material handling plants and other engineering industries for more than four decades. The company also has Read More ...

Atlas Copco's HiLight V5+ wins best design award for India's most eco-friendly light tower

Atlas Copco's HiLight H5+ LED light tower makes job sites brighter and safer, and is the most silent and efficient light tower for road construction, airports, hydro power projects, mining and construction Read More ...

Utkarsh Revamps Logo

The new Utkarsh logo is a demonstration of the different sectors the company has ventured into viz. polymer pipes and fittings, transmission and telecom towers, poles and masts for lighting Read More ...

Magnetic Autocontrol: Specialists in Vehicle & Pedestrian Access Control

Magnetic Autocontrol, a business unit of the FAAC Group, operates in the ever-growing market of pedestrian and vehicle access control. Headquartered in Schopfheim in the southern Black Forest, Germany Read More ...

Elofic Industries’ off-highway & CE filter segment

Elofic Construction Equipment Filters
Elofic Industries Ltd. focuses on its range of filters for off-highway and CE filter segment. Looking at the huge potential for its filters, it plans to focus even more aggressively on its filters business in the coming years Read More ...

New Building Material & Construction World

New Building Material & Construction World
MGS Architecture

Modern Green Structures & Architecture

Modern Green Structures & Architecture

Lifting & Specialized Transport

Lifting & Specialized Transport

Indian Infrastructure & Tenders Week

Indian Infrastructure & Tenders Week