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Crushing plant at heart of Laos dam project


A Thai/Laos/Italian joint venture in Southeast Asia promises to provide power across two countries. To that end, the JV has employed a broad range of Terex MPS crushers and feeders to produce aggregates for the dam walls.

A joint venture of Italy’s Cooperativa Muratori e Cementisti (CMC) di Ravenna, Thai company Ital Thai and Vietnam’s Song Da Corporation is using a 1500 tph ICM/Terex MPS plant to produce aggregates for a four million cubic mere rolled compacted concrete (RCC) and 500,000m3 conventional concrete (CVC) dam at the Nam Theun River, Bolikhamsay Province, Laos. 

The dam, which is 105 metres high and 700m long at the top, will produce electricity in three groups: two units of 250 megawatts (MW) to be distributed in Thailand, and one group of 150 MW to be distributed for local use in Laos.

The solution consisted of a complete crushing plant to produce 1,500mtph of concrete aggregates. The plant is made up of two 5220 vibrating grizzly feeders, two Cedarapids JS4552 jaw crushers, three vertical shaft impactors, two Cedarapids TSV6202 horizontal screens, six Cedarapids TSV8203 horizontal screens and four cone crushers – two Cedarapids MVP550Xs and two Cedarapids MVP450Xs. In addition, the set-up includes an impressive 45 conveyors (total length of 1400m), and the installation of 5000 kilowatts (kW) of power. 

The plant is being fed by blasted sandstone rock with a high abrasion index to produce 0-5mm, 5-12mm, 12-25mm and 25-50mm, as dictated by the mix design of the RCC, with any excess being recycled. A reclaiming plant transports aggregates from stock to a cooling plant via two downhill conveyors (one for coarse aggregates with a capacity of 1800 tph and one for sand with a capacity of 700 tph). The supply is completed by a set of conveyors with a capacity of 1000m3 to pour RCC into the dam.

Commissioned in 2018, the plant was supplied by distributor ICM srl, Italy, which also completed all the engineering required (except civil works), equipment, electrical system (power and controls), steel work (hot galvanised), delivery, assistance to assembly and erection up to commissioning (with customer crew). The plant is now being operated by Sinohydro, with works expected to be completed in 2023.

Paul Lilley, the sales director for Terex MPS’s ERA said the plant installation at Laos Dam demonstrated “how our equipment can be seamlessly combined to provide a tailored solution that consistently delivers aggregates that meet customer requirements – even in complex, extensive projects such as this. We have no doubt this plant designed by ICM will continue achieving ultimate efficiency and production output through to project completion”.

A reclaiming plant transports aggregates from stock to a cooling plant via two downhill conveyors – one for coarse aggregates, another for sand.


The Simplicity range features heavy-duty pan feeders with grizzly sections added to the pan surface. They perform both scalping and feeding in a single unit and are designed for impact loading and heavy burdens in the toughest applications. The grizzly feeder reduces maintenance and capital costs by scalping only large material to the crusher or rip rap pile, while fines pass through the grizzlies to be screened or discarded. Standard grizzly feeder sizes range from 99cm x 3m (39” x 10’) to 218cm x 9.1m (86” x 30’) and can be customised for a site’s specific needs with a wide range of options.


Rugged, field-proven designs and almost 200 years of combined jaw crusher manufacturing experience provide the foundation for the Terex Jaques and Cedarapids jaw crusher lines. With rated capacities from 100 tph to 1000 tph, these industry-leading brand names provide the platform from which other machines are measured. 

The JS series jaw crushers feature a quick-change jaw die system and quick-adjust hydraulic shim system to provide more uptime. They are designed to be more profitable and offer reliability, quality, capacity, and ease of use.


MVPX cone crushers simply pulverise everything that stands in the way of success. Inside and out, the MVPX’s advanced engineering of sets industry benchmarks, featuring a patented Rollercone roller bearing design and an innovative hydro-pneumatic tramp iron relief system. The complete MVPX line includes three different models in stationary or portable configurations, up to 375kW power input, processing up to 700 tph and capable of handling sand and gravel, shot rock and recycled materials. Each machine offers competitive advantages – from improved product quality to high throughput capacities to low operational costs. 


The revolutionary TSV increases production and handles applications not possible with traditional horizontal screens because it combines the efficient, high G-force El-Jay oval stroke motion with variable slope operation to handle larger deck loads. This screen also features more steel in the “rock zone” for industry-leading durability. The screen adjusts up to 10° in 2.5° increments to best fit the application and optional bottom deck deflector plates increase efficiency.

The TSV with its variable slope operation gives customers a product that handles more applications than other screens on the market. The increased capabilities, higher production, enhanced durability and ease of maintenance of the TSV make it an industry leader.

TSV horizontal screens are available in a wide variety of sizes and deck styles to accommodate virtually any application. Sizes range from 4.8m x 1.5m (5’ x 16’) to 6m x 2.4m (8’ x 20’) two-deck or triple-deck units.

The set-up includes an impressive 45 conveyors, spanning a length of 1.4km, to transport aggregate for the roller compacted concrete.

For more information about Terex MPS static crushing and screening solutions,


This article appears in the August issue of Quarry Magazine.

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