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gold refining process ppt filetype

1900 ADthe metals used in jewelry were gold and silver Copper and zinc were added to cheapen and to strengthen them The processes of melting and refining were simple well known and adequately described in the literature A young man wishing to learn the ... 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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