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Gold flotation process

Flotation is a method that is widely used in gold ore processing plant to process the rock gold ,commonly used in dealing with highly floatable sulfide minerals containing gold ore. Flotation process can maximum enrich gold to the sulfide mineral , tailings can be abandoned directly , the cost of processing plant is low, 80% of China's rock gold are used in this method. Flotation process that mainly including dosing, mixing, filling, blowing foam etc .

Application

Flotation is suitable for processing the gold-bearing sulfide ore which with fine and floatable gold particles, during flotation , sulfide ore act as the carrier of gold and is enriched to sulfide mineral concentrate . Flotation can be also used to process multi-metal which containing sulfide mineral and carbonic mineral . For the mineral insoluble that can`t be processed by amalgam or cyanidation , which should use a combined process that including flotation .

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Introduction

Grinding fineness , pulp concentration , reagent dosage , inflating volume , flotation time are the influence factors for flotation process . Normally , these process conditions should be confirmed by mineral processing test and practical experience .

Process flow

Flotation process has the most important influence for mineral flotation , to choose the rational process depends on the nature of ore , and should also consider the facility of operation , cost and the recovery .

For the gold mining that contains only one mineral with gross particles and embedded uniform  , usually use one step grinding and flotation process . For the gold particles have diversity sizes and embedded uneven in the gold ore , normally  put mercury plate and gravity equipment to pre-recover the gold particles in the grinding and classifier circuit before carry on the flotation process . These two process above are widely used in gold dressing plant. But for the gold ore with complicated mineral , flotation process will be more complex , for example, separation process in grinding , mud and sand separation process are all applicable in practice . For flotation in polymetallic ore , its process will be more complex , gold enrich normally in some concentrates , and is sold as an associated mineral .

Flotation equipment including all types of flotation machines , new type flotation column that has been used in certain gold ore .

XJK flotation machine is a traditional self-absorption flotation machine , JJF , SF, BF flotation machines are new type self-absorption flotation machine . Self-absorption mechanical agitation flotation machine is the most competitiveness at the moment ,  because it has simple structure , fulfilled air , dispersion uniform , lower rotating speed of vane , lower energy consumption , less abrasion characters . And this type equipment make it possible for upsizing the beneficiation equipment ,  among these , KYF flotation machine has the maximum volume tank that could reach 320 m³。


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    Yunnan 500t/d gold flotation plant                          Inner Mongolia baotou 1000t / d CIL plant

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