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CORUNDUM ( Data in short of corundum , unless noted ) Domestic Production and Use ... Corundum was used in and polishing optical components , 45 % , fabricated metal ... Import Sources ( 1969 - 72 ) : 100 % . 4 . Tariff : Item Number Rate of Duty / / 14 Statutory and concentrate 519 . 17 Pree ...Get Price
a suitable , without preliminary preparation other than , for the production ... and in this connection four samples of charcoal from were recently ... carried out by a commercial firm , using the charcoals as fuel in a - truck ... the Colonies have included the analyses of 38 from a new field in Sierra ...Get Price
Production of sillimanite in India , 1952 – 56 , in short Year Short Year Short 3 . ... Western Calable resert the endo a morsion , 19 . ... Taylor Sons Co . rebuilt its batching and system and its screening system ... mullite from Bayer alumina and other aluminous and siliceous materials .Get Price
At the kyanite deposits in , mills and subjected to preliminary flotation to ... South African sillimanite , but is not a saleable 35 - mesh kyanite product . ... to tributes greater refractoriness . finer grades by dry in a pebble mill . ... expected to contioning tanks prepare the for froth flota tinue.2,Get Price
TPR 122 Jumbo drills , noise control , technology development OFR 100–81 K , mineral industry , annual review ... RI 8785 Kiln , pelletizing , firing with low - Btu gas from lignite . ... ) comminution , attrition process . ... RI 8831 25 - - per - day pilot plant , preliminary design OFR 122 ( ) - ( 6-Get Price