7 Reportage - Un avanzatissimo stabilimento per la lavorazione dei graniti dei quarzi e delle quarziti Decolores Marmores e Granitos

Reportage – An extraordinarily comprehensive stone processing yard in Brazil: Decolores Mármores e Granitos

Brazil boasts an abundance of mineral wealth including immense deposits of fine building and decorative stone derived from bedrock sources. This great quantity of fine stone has surely represented the most significant factor behind the tremendous growth in the Brazilian stone industry. However, Brazilian stone processors should be credited for growth of their field too, as most of them show both entrepreneurial flair and a passion for doing business, with a policy of continuous investment in mechanization, modernization and expansion of their manufacturing facilities.

Decolores Mármores e Granitos is a perfect example of companies forever striving to meet the international strictest quality standards and even exceed customer expectations through a combination of latest machinery and qualified experienced staff. Over the years, its team has developed so many specialized processing methods and techniques that today they are able to turn all types of Brazilian stone into highest quality slabs, even when it comes to working with varieties widely regarded as far too problematic because of extensive fracturing or unusual colouration, such as fragile faulty “exotic” granite and white diaphanous quartz.

In the light of the fact that much material has to undergo complex treatments involving the use of synthetic resin, Decolores’ management made a decision to set up a technologically advanced restoration, reinforcement and enhancement unit consisting of two automated production lines.

The high mechanical speed of the first resin plant makes it possible to achieve very high outputs, especially in the case of relatively sound granite which only needs a uniform resin coating so as to fill any micro fissures or tiny pinholes whose presence on the mirror-polished surfaces would cause a loss in value of the slabs.

The second Resin Line is primarily intended to strengthen the structure and improve the appearance of exotic granite, quartzite and quartz. Given the high absorption rate of various kinds of Brazilian stone, this plant is equipped with an oversized drying oven where the slabs rest for no less than 80 minutes at a temperature to be set according to the chemical properties of each material. The area where a layer of fibreglass mesh is stuck to the back of fragile slabs and the stone surface is resin coated, contains a series of worktables for manual repair operations, and an exceptionally complete equipment composed of a curing oven for fast-setting resin, a vacuum chamber – that makes a big difference to the quality of the finished product ensuring the thorough filling of hairline fractures – and a stacker aimed to extend the time separating the initial resin application from the finishing touch which comes in handy whenever the stone is pitted and holed.

The main curing oven is remarkably large if compared to the productive capacity of the plant in order to allow the slabs resting in the polymerization chamber for a far longer than the average period. As a result of this, the company can consistently use slow setting epoxy systems, such as the resins developed for intensifying the colour of dark green, blue, brown and black granite, and the non-yellowing products suitable to treat translucent quartz and – more generally – light-coloured material.