Maintenance

Optimisation minimises production costs

A few kilometres from the city’s old quarter, and close to the Tagus River, which borders the town as a natural defence, is one of the installations belonging to Construcciones Antol?n Garcia Lozoya SA. Antol?n Garcia Lozoya founded the company in 1940. Since its inception, the company has developed the activity of civil construction works.

Management of the firm is currently in the third generation. D Miguel Angel Garcia Carrascosa recalls the beginning of the business: ?Our operations go back to the 1940s, when all the work was done by hand. The gravel was extracted from the river and hauled by mules to the quarry where workers crushed it manually.?

The company has undergone a big transformation since those early days. The first commercial contact with Metso dates back decades to the installation of Babbitless crushing equipment. The customer currently has about 150 professionals and the industry?s most advanced equipment.

In 2008, Construcciones Lozoya began new negotiations with Metso to expand its plant in Toledo. The priority of the new project was to multiply the total production of sand to manufacture asphalt and concrete, resulting in a significant reduction in total costs and minimum environmental impact.

MAXIMISING PRODUCTION, QUALITY
The customer asked Metso to design a tertiary crushing plant to process siliceous boulder from the Tagus River and blasting material from the exploitation area located 20km from the site.
The customer?s requirement was to obtain a final product size of 0-6, 6-12, 12-18 and 18-25mm from the primary pre-stock. The equipment capacity should be 250 tonnes per hour. The installation already included Metso secondary equipment.

The Nordberg GP200S cone crusher, already in the secondary stage, is specially designed to minimise operating costs in secondary crushing applications for gravel. Material is screened and forwarded to the tertiary crushing stage. There, the Nordberg HP4 cone crusher reduces the material size and discharges it into a conveyor that leads to the four-deck Ellivar 16 vibrating screen, obtaining the four final product sizes required by the customer.

OPTIMISATION PROCESS SECURES CUSTOMER SATISFACTION
Both Nordberg GP and HP cone crushers specialise in a range of linings that ensure strong results in different applications.

?After the first year of the installation expansion, the overall performance of Metso equipment is very satisfactory. However, now our priority is to get the best possible sand production. We still aim to increase our current production,? said Lozoya?s Miguel Angel Garcia Carrascosa.

To meet this requirement, the Metso Service team is working on installing a new lining for the cavity of the crusher in order to increase productivity and maximise equipment performance.

MINIMUM IMPACT ON THE ENVIRONMENT, LANDSCAPE
Protection of the environment is a priority in all of Construcciones Lozoya?s projects and it is a part of its corporate strategy. Consequently, all construction activities carried out and all of its production processes offer environmentally friendly solutions.

The Toledo plant incorporates the latest technology to capture and remove dust and noise, in compliance with environmental legislation. The whole plant includes covered conveyors and dust suppression systems by irrigation.

Given the proximity to the centre of Toledo, the project also had to take special consideration of the environment from its initial conception in order to avoid impacting the landscaping in the area.

PERFORMANCE AWARDS
Thanks to the efforts and dedication of all who have worked at Construcciones Lozoya, the company has become one of the largest construction companies in the region.

In 2000, the company was named the ?BestFamily Business? by the Toledo Business Federation in recognition of its solid experience and excellent management. In 2008, Damian Garcia-Lozoya Medina was recognised by the Toledo Chamber of Commerce for his business career spanning over five decades.

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