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Quarry products

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ROKA REFRACTORIES

Greece

A refractory materials manufactoring company founded in 1989, in thessaloniki greece aiming at the production of specialized refractory ceramic products used in fireplaces, ovens, barbecues, stoves etc.The company owns private quarries to secure incessant raw materials flow and high constancy in the manufacturing process.Roka refractories manufactures top-quality specialty firebricks in nine defferent colors and shades, fire boards, refractory aggregates and refractory mortar. The bricks belong to the dense, low-duty, fireclay refractory bricks subcategory. They are mainly made of kaolinite, quartz and some chamotte and their dominant chemical compounds are silica (sio2) and alumina (ai203).Available colors are: white, buff yellow, still de grain yellow, red, cardinal red, granite, chocolate, grey and black.
OLYMPUS SA INDUSTRIAL MINERALS

Greece

OLympus sa is an industrial minerals producer The raw minerals extracted from its own quarries and procesed in its plant by crushing, washing, hand picking, drying, grinding in pebble mills, screening, air separation and packing as end product The main products are Quartz and Quartzite for specific mortars, artificial granite water filtering etc with particle size varying from 20 micron up to various size of granules 0, 1-0, 3 mm , 0, 3-1, 2 mm , 1, 2-2, 4 mm , 0, 3-2, 4 mm etc in accordance of customers request Next to above products is zeolite (clinoptilolite type) in granules and powder -20micron up to various size f granules 0-1mm , 1-3mm, 3-5mm for agriculture and as a supplement in animal foods Other minerals are pozzolane in powder -45 micron for archaeological works and traditional constructions and clayey diatomite as insect repellents in agricultute

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