Friday, February 10, 2012

Special concrete plant for the Lafarge Group


Alquezar has finished the assembly of the special concrete plant for the Lafarge Group in the Barcelona town of El Papiol.

This is a Vertical Dosing Plant, model V-DH-240, with two concrete dosing lines, for a capacity of between 240 and 300 m³ per hour.

The peculiarity of this concrete plant is that it works with special aggregates such as anhydrite. It also incorporates a white cement dosing line.

Alquezar has constructed different plants for the Lafarge Group in Spain, France, Guadalupe Island and Reunion Island.

Lafarge concrete plant




Concrete output
Cement input
Aggregate input
Rotary vibrating feeder

Tuesday, January 31, 2012

Multi-cyclone plant in Panama

Alquezar has developed a new project for GUPC in the Panama Canal.
This is a multi-cyclone plant to eliminate fines in the wash water of a basalt quarry. The crushing processes of the quarry were producing excessive fines, causing problems in the water clarifiers for its recovery.

With this multi-cyclone system, a cut-off at about 0.040 mm is achieved, eliminating the 0.040 to 0.600 mm fraction of solid fines contained in wash water of the quarry, before it reaches the clarifiers. The plant has a water processing capacity of 3000 m³ per hour.

Alquezar uses its extensive experience in the quarry water treatment and washing processes to develop this new and specific project.


Wednesday, January 18, 2012

Crushing Plant for GUPC in the Panama Canal.


Alquezar has sold a fine sand crushing plant for the quarry of the extension work on the third set of sluice gates of the Panama Canal.

The installation is comprised of two centrifugal crushers (VSI) model VA-2500 with 500 kW power each one, and a high frequency classification sieve with biflow system.

The objective of the crushing plant is to produce 0-1.5 mm fine sand, from a feed of 1.5-19 mm basalt.

The VSI crushers are configured with closed rotor and impact anvils, to crush "rock on steel”


ALquezar's VSI Crusher

Tuesday, January 17, 2012

Concrete plant of Ribeiradio in Portugal for FCC


Alquezar has become consolidated as one of the great specialists at a global level in the manufacture of large concrete plants, for the construction of dams and large public works, after the sale of a new concrete plant, with stockpiling system and aggregate transport, cement and ashes stockpiling system, and pneumatic conveying system for cement and ashes.

The concrete plant, which is now in its assembly phase on-site, incorporates two BHS Sonthofen twin-shaft horizontal mixers, reaching a total production capacity of 300 m³/h. As normal with this type of plant, the aggregate is weighed by means of independent scales, thus minimising downtimes in aggregate dispensing.

FCC has trusted in the quality and professionalism of Alquezar in important projects such as the Dam of Castrovido in Burgos or the Vidin-Calafat Bridge between Bulgaria and Rumania.





Sunday, January 15, 2012

Concrete Plant of FOZ TUA in Portugal.


Alquezar wins the tender to manufacture the concrete plant for the hydroelectric dam of Foz Tua, in Portugal.
This is an important project comprised of three parts: Concrete Plant; Stockpiling and Transport of aggregates; Stockpiling of cement, Ashes and Pneumatic Conveying system.

The concrete plant is a dual plant, with BHS Sonthofen twin-shaft horizontal mixers, each one with 4.5 m³ capacity. These twin-shaft mixers admit aggregates of up to 150 mm. The total capacity of the plant is 250 m³ per hour.

The stockpiling of gravel and sand is carried out with metal silos whose capacity varies from 450 m³ to 750 m³, which are divided into different compartments thus permitting the storage of different sizes of aggregates in the same silo, guaranteeing full flexibility of the plant. The plant is completed with belt feeders, vibrating belts, conveyor belts, aggregate loading hoppers and temperature sensors in each one of the aggregate compartments. The transport and supply of the aggregates to the concrete plant is fully automatic.

The cement and the ashes are stored in five 600 m³ capacity silos and are transported to the concrete plant with two dense-phase pneumatic conveying systems.

The temperature control in this project is critical, so the entire plant is manufactured with sandwich panel installation, rock wool coating and thermal paint.

The construction of the Foz Tua dam project is carried out by a consortium of Portuguese construction companies, led by the company, Mota-Engil.



Friday, January 13, 2012

Crushing plant in Senegal


Alquezar will manufacture of quartzite crushing and classification plant in Senegal. This is a quarry for the production of concrete aggregates and asphalts, with 600 t/h capacity, incorporating a primary crushing stage, using a jaw crusher with 1400 x 1070 mm entry mouth. The secondary and tertiary crushing stages are carried out with three cone grinders, whilst the quaternary stage is comprised of a centrifugal grinder or vertical shaft impact crusher (VSI) model VA-2500.

The design of the plant, with its four crushing stages, guarantees good cubicity and the elimination of stones in the final product, providing top quality construction aggregates.

This is the second market covered by Talleres Alquezar in sub-Saharan Africa, after entering Angola a few years ago.



Wednesday, January 11, 2012

Washing Plant in the Panama Canal.


TALLERES ALQUEZAR has manufactured a washing plant for the GUPC basalt crushing quarry in the Panama Canal.

The plant is comprised of a wash screen, model TSL650, and a hydrocyclone sand recovery system. The washing trommel, model TSL650, is a machine that has been specifically designed for this project.  It has a supply capacity of 1000 tons per hour and is designed to admit a maximum feed size of 300 mm. For its part, the hydrocyclone sand recovery unit incorporates flat bottom cyclones to prevent excess fines in the final product.

The sale of this aggregate washing plant represents the extension of the commercial relationship between Alquezar and the contractor for the extension work on the third set of sluice gates of the Panama Canal: GUPC.