500TPD Gold Ore CIL Beneficiation Plant
500TPD Gold Ore CIL Beneficiation Plant

1.overview

The Gold ore beneficiation plant is designed by  sinonine , with a design capacity of 450tpd and an actual  capacity of 500tpd.  At the early stage of actual running, the plant adopted flotation method to produce gold concentrate, and later we designed a CIP plant of the same scale. The final product is gold bullion


2.Ore properties

The gold ore is of the middle temperature hydrothermal fracture filled with quartz vein composite gold ,  most of the natural gold and metal minerals symbiosis, in which limonite gold accounts for the most. Ore density 2.51t/m³.


3.Beneficiation process

Gold concentrate was originally produced by a single flotation process. Due to the symbiosis between natural gold and metal oxidized minerals, the recovery rate of gold by flotation is only 73-75%. So technical modification was carried out, and a new process of CIP method of direct cyanidation of raw ore was adopted. The process shown in figure 1


gold ore CIP process

Figure1.Gold ore beneficiation process

Gold CIP process is widely used, because it can save investment in infrastructure,  and costs are also slightly reduced, so it has been widely used in the world. The gold beneficiation plant is a large scale gold CIP  plant, with advanced technology  and high automation level, and equipments and configuration are innovative, such as high efficiency thickner, new type leaching stirred tank, automatic detection device. This process adopts activated carbon to adsorb gold and replaces the traditional method of solid-liquid separation by washing. It is more advantageous to oxidized ore with a lot of mud or to gold ore with difficult solid-liquid separation and low washing rate, and is of special significance to gold ore in cold regions and in limit construction sites. After the plant is completed, the gold recovery rate can reach 90%. See table 1 for the process index and table 2 for the unit consumption index.


Table1. Technical index


Item

Unit

Design index

First year

Second year

Grade of raw ore

Grade of Gold Concentrate

Gold recovery rate by flotation

Cyanide leaching rate

Adsorption rate

Desorption rate

Electrowinning rate

Melting rate

Total gold recovery rate by cyanidation

g/t

g/t

%

%

%

%

%

%

 

%

3.5

 

 

91.2

99.7

99.8

99.1

99.9

 

90.3

3.72

166.85

75.06

3.79

170.16

74.04



Table 2 .Consumption index

Table 2 .Consumption index

4.main equipments

The production line is equipped with reasonable equipment according to the design process. The equipment is installed smoothly and runs well. The main equipment is shown in table 3.

Table 3. main equipments list

beneficiation equipments

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