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The gold generally occurs as liberated due to oxidation and alteration of sulphide minerals due to chemical action, or native gold occurring in quartz veins or as electrum in silver rich ores. The major characteristic is the gold is easily liberated. In these ores generally either a combination of Simple Gravity and Conventional Cyanidation    Cyanide is the general descriptive term applied usually to sodium cyanide, NaCN, but the basic formulae are in terms of potassium cyanide, KCN. However, either sodium or calcium cyanide is used in practice.  Typical Free Milling and Refractory Gold Ores Flow Sheet.    The calcium cyanide...

China is a world center for collectors accounting for more than 50% of world manufacturing capacity for sulphide collectors. INTRODUCTION -CHEMICALS USED IN MINING  China is a world center for collectors accounting for more than 50% of world manufacturing capacity for sulphide collectors.Due to low cost and familiarity, commodity reagents (flotation reagents (e.g., frothers and collectors), flocculants, solvent extractants, flocculants and dewatering aids- water & wastewater treatment chemicals), continue to dominate the mining chemicals market. These categories represent the largest (USD 27.90 billion by 2020) and most important commodity chemicals used in the mineral processing industry. Specialty reagents account for...