Operations
Our Concrete Plants
Our concrete plants are strategically located around Trinidad and Tobago and are best poised to meet our growing requirements of our customers.
On average, our plants have a capacity of 130 m³, per hour.
Our plants also boast of an availability of over 94%, as a result of our sound preventative maintenance program.
Our Aggregate Plant
The Melajo aggregate plant, located at Valencia is a well-equipped facility, able to handle the demands of all the local market for construction.
The aggregate plant is supported with onsite Lab services, to ensure continuous quality control. The recent installment of a computerized weighbridge system will allow for strict measurement of aggregate, to further enhance our quality control measures.
Readymix employs well-trained professionals to ensure quality production and utilizes only the best of raw materials, in order to guarantee top-of-the-line products.
RML's Melajo Quarry Water Clarifier System
Readymix (W.I) Ltd purchased a “drag chain” water clarifier from the JAD-AIR Incorporated. This unit is comprised of a polymer tank and three modules; a master module and two slave modules each capable of handling 1200 gallons/min of dirty water and delivering water with better than 50 parts per million of Total Suspended Solids (TSS). This unit will provide a true close looped system which enables the water from the process to be re-cycled back into production. Additionally, the water returning to the in-take reservoir will be available for re-use on the plant decreasing the currently high demands for fresh water supply during the dry season. Some small make up water will be required to compensate for evaporation and losses on the plant.
The principle of operation of the unit is based on the water and solids being separated by gravity sedimentation, enhanced by a proprietary polymer flocculation method (motionless mixers). The polymers themselves are specifically selected for the type of material (pitrun) and blends being processed.
Effluent from the process is pumped to each of the modules where the clarification process takes place. Polymers from the polymer tank are injected into the effluent stream at a metered rate. A two-stage reaction occurs. The first stage involves the hard or flash mixing of the polymer with the effluent stream for the initial reaction. This is followed by a more gentle mixing which promotes final flocculation and conditioning for settling.
The suspended solids are then allowed to settle on the Clarifier floor where they pileup, are compacted and the water squeezed out. The solids so thickened, are automatically scoped/scraped from the bottom of the unit by special conveyor paddles. The solids are deposited into a containment area in front of each of the clarifier modules. These solids are dry enough to be handled with a front end wheel loader and hauled away with dump trucks within 24 hours of drying. Clarified water (up to less than 50 ppm) leaves the system to the storage pond for re-use in the process.
The clarifier arrived at Readymix (W.I) Ltd on the 19th October 2003 and was commissioned on the 10th January 2004 and was offically launched at a ceremony held on the 2nd of March 2004 where the Minister of Energy and Energy Industries, Mr.Eric Williams, a representitive for the Minister of Public Utilities and the Enviroment, The Mayor of Arima, Mr. Eustace Nancis and Enviromental Management Authority Managing Director/Cheif Executive Officer, Dr. Dave Mc Intosh who were present.
Readymix has taken steps towards alleviating pollution. The Company has invested in the purchase of a $7 million dollar piece of equipment – the Water Clarifier System – that has already been installed at the Valencia Quarry and is fully operational.
By Anne Hilton, Trinidad Newsday (Section B; Wednesday March 17, 2004)
On March 2, Readymix commissioned the first water clarifier system in TT. Built at the cost of TT$7 million, polymers in the clarifier precipitate out the sludge in wash water from the quarry. The closed system recycles the clarified water to the reservoir, from there to the wash plant, and back to the clarifier.
In his address at the official commissioning ceremony in the Melajo Valencia Quarry, Readymix (West Indies) Chairman Ernest Williams said the Board of Directors felt that, as leaders in the cement manufacturing industry, the company‘s position should be matched by a similar concern for the environment, even if it meant having to pay for it. The Water Clarifier System will totally eliminate the flow of effluent from our washing plant into the surrounding rivers.
He added that the TCL Group is pursuing another major initiative for improving the quality of the environment by incinerating waste in cement kilns for complete combustion under controlled conditions - as is done in parts of North America, Europe and Australia.Speaking on behalf of the Minister of the Minister of the Environment, WASA CEO, Errol Grimes was high in praise of Readymix for commissioning the closed loop Water Clarifier System to recycle wash water.
He said the system will be a great saving for WASA because, now that the river was no longer polluted with heavy loads of silt from the quarry wash plant, farmers downstream could use river water to irrigate their crops instead of depending on WASA for water.He stated that costs of treating water would be significantly reduced should quarries upstream of the Piarco water treatment plant install similar water clarifiers to reduce the loads of quarry- washing silt in the Caroni.
Charran Mootilal, speaking on behalf of the Minister of Energy, said the commissioning of the Water Clarifier was the most significant event in the quarry industry in the last 20 years. He pointed out that silt laden wash water returned to the rivers, were the direct cause of flooding in Sangre Grande.
Barbados Operations
Premix and Precast Concrete Incorporated is situated in the north of Barbados, ideally located near to its aggregate supply.
The concrete batch plant batches at a rate of 45 m³/hr. The plant can adequately supply its clientele anywhere in Barbados from its fleet of 7 trucks and 2 pumps.
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