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reduction of rock sand iran

Use of rock salt for food purposes has been banned by Iranian health authorities In this study heavy metal contamination of table salt consumed in Iran has been investigated One hundred samples of rock and refined table salts were analyzed using atomic absorption spectrophotometeric methods for the presence of toxic heavy metals... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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