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Iran 300tpd Gold Mineral Processing Plant

The metallic mineral mainly includes native gold, pyrite, limonite, and cerusite; nonmetallic mineral mainly includes quartz and calcite. The valuable element of the ore is gold, so the industrial type of the ore is determined as gold ore.

Xinhai Solution

01

Crushing: Raw ore was transported from the ore supply point to raw ore bin by automobile, and then fed by chute feeder to jaw crusher for coarse crushing. Coarsely-crushed products were fed to circular vibrating screen for screening through 1#belt conveyor. Oversize products were fed to cone crusher for fine crushing through 2#belt conveyor. Finely-crushed products returned screening operation. Thereby, two-stage one-closed-circuit crushing process was formed. Undersize products were fed to fine ore bin through 3#belt conveyor.

02

Grinding, classifying & gravity concentration: Material in fine ore bin was fed to 4# belt conveyor by pendulous feeder respectively and conveyed to grid ball mill. Discharged ore was flown into sawtooth wave jig for gravity concentration by gravity. Concentrates were flown into shaking table for concentration by gravity. Concentrates from shaking table were stored in bags directly. Tailings from shaking table were delivered by pump to deliming bucket for dewatering. Underflow was back to ball mill. Tailings from jig were classified by high weir spiral classifier. Sand return was back to ball mill. Thereby, one-stage closed-circuit grinding was formed. Overflow from classifier was flown into 1# high-efficiency agitation tank by gravity for the first roughing. Tailings from roughing I were delivered by pump to hydrocyclone cluster for controlling and classifying. Underflow from hydrocyclone cluster was flown into overflow ball mill by gravity for regrinding. Discharged ore was flown into feeding pump box of hydrocyclone cluster by gravity. Thereby, two-stage closed-circuit grinding was formed. Overflow from classifier was flown into 2# high-efficiency agitation tank by gravity for roughing II.

03

Flotation: Overflow from classifier was into 1# high-efficiency agitation tank by gravity for roughing I. SF-2.8 self-induced aeration floatation cell was selected. Concentrates were flown into flotation cell for concentration, and tailings were flown into feeding pump box of hydrocyclone cluster by gravity. Overflow from hydrocyclone cluster was into 2#high-efficiency agitation tank by gravity for roughing II. SF-2.8 self-induced aeration floatation cell was selected. SF-2.8 self-induced aeration floatation cell was selected respectively for two times scavenging. SF-1.2 self-induced aeration floatation cell was selected respectively for two times concentration. Concentrates were flown into ordinary agitation tank for dewatering, and tailings were flown into double impeller leaching agitation tank by gravity for dewatering.

04

Dewatering: Gold concentrates with flotation were delivered by pump to high voltage diaphragm filter press for dewatering. Filter cake was transported by belt conveyor and packed in bags, temporarily stored in a concentrate warehouse for sale. Tailings were delivered by pump to chamber filter press for dewatering. Filter cake was transported by automobile to tailing pond for stacking and storage.

Main Equipment

Project Result

The concentrate recovery rate was 85%, the concentrate productivity was 9.25%, the concentrate yield was 27.75t/d.

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