Small Scale Portable Modular Cyanide Leaching Gold Extraction Plant

• Customization: Available
• Type: Gold Modular Plant
• Function: Gold Recovery
• Drive Mode: Electric Motor
• Voltage: Multiple Voltages
• Power: Multiple Power
• Application: Small Scale Gold Mines
• Transport Package: Containerized
• Specification: Various
• Trademark: HZE
• Origin: China
• Production Capacity: 5 Lines Per Year

Product Description

Small Scale Portable Modular Cyanide Leaching Gold Extraction Plant

APPLICATION
The modular CIP/CIL plant recovers free gold from the sulfide ores, oxidized ores, alluvial or tailings.

MAIN FLOWCHART

FUNCTIONAL MODULES
For the situations of raw materials and the customer's requirements, it is free to select the comminution module, grinding and classification unit, gravity concentration module, thickening module before leaching, pretreatment module, leaching and adsorption unit, air supply module, water supply module, power supply module, tailings dewatering module and elution & electrowinning system to form a complete plant which recovers gold as much as possible.

Crushing Module
The rocks are crushed to the qualified particle size for grinding. The module is composed of hoppers, crushers, belt conveyors, feeders and so on.
The ores are usually crushed in two stages. According to the actual situation of the site, the primary crusher can be mounted in the mining area or the processing plant. The crusher is usually driven by a diesel engine if it is located in the mining area.

Grinding and Classification Unit
The closed-circuit grinding and classification system consisting of the ball mill and spiral classifier can liberate ore into the suitable particles for recovering gold. The unit can be adjusted to a closed-circuit system consisting of the ball mill, slurry pump and hydrocyclone if the customer demands.
The grinding and classification unit is amounted in the whole steel frame.

Water Supply Module
It is composed of the water tanks, water pumps and water supply pipeline. The optimized water balance is achieved by the controlled the utilization rate of water.

Power Supply Module
It is composed of the diesel generators, distribution devices and the starting panels and so on. The module is suitable for the areas with inconvenient traffic and shortage of the power grid.
Note:
It is recommended to add gravity concentration module to recover coarse grain gold if a certain amount of free gold exists in the raw materials. Usually the jig is a into the grinding and classification circuit to recover the coarse gold particles then the rough concentrate of the jig is sent to the shaker for cleaning.
The thickening module before leaching should be used to increase the slurry density to meet the needs of leaching and adsorption if the slurry density discharged from grinding and classification unit is low.
The pretreatment module is used before leaching to eliminate the influence of harmful substances on leaching and improve the recovery rate if the raw materials contain some harmful composition such as oxidized copper o ore, arsenic and micro-fine carbon.
It is strongly recommended that tailings dewatering module is used to reduce the consumption of water and cyanide and is conducive to environmental protection.
The customer freely selects the high efficiency elution and electrowinning system. The carbon can be burned if the investment is hoped to reduce or the operation life of the plant is short.

SPECIFIC MODULE
Thickening Module before Leaching
If the grinding and classification unit is composed of the ball mill and hydrocyclone, the density of slurry after classification is low. It is necessary to increase the density to 40-45% before leaching.
The thickening module consists of the thickener and a flocculant feeding device.
The purpose of flocculant feeding is to reduce the settling area of the thickener and shorten settling time, so as to reduce equipment investment and improve the settling efficiency.
 
Leaching and Adsorption Module
The leaching and adsorption operations are executed by the integrated HZTank with proprietary technology. Depending on the ore conditions, the number of HZtank can be defined freely to combine the production line to achieve the processing of CIP or CIL as well as the required duration of leaching and adsorption.
HZTank is divided into six independent leaching chambers from a whole cylinder. Each leaching chamber has completely independent agitator and air supply device. The slurry in the previous chamber gravitates to the next chamber to form the continuous processing with easy management and operation.
The unique air supply device of HZtank distributes the bubbles evenly in the tank, so that oxygen can fully participate in chemical reaction which greatly improves the oxygen utilization rate and reduces the air supply. The air fed in the tank agitates slurry so the input power of the agitator can be reduced to achieve the purpose of energy saving.
If HZtank is used in the adsorption stage, an interstage screen is installed between two adjacent leaching chambers to ensure that the activated carbon is kept in each chamber. The activated carbon in every chamber is transferred countercurrent by the air lifters to keep the integrity of the activated carbon particles for reducing the loss of gold.

Air Supply Module
The module consists of the air blower and the pipeline system. It supplies oxygen for the leaching chemical reaction and energy of motion for transferring the loaded carbon.
 
Tailings Dewatering
The tailings of leaching are transported by slurry pump to the automatic filter press for dewatering, and the filter cake is transported to the outside of the plant for storage. The water can be returned to the plant for maximum reuse, and the remaining reagents in the solution can be returned to the plant for fully use, which is not only conductive to the environmental protection, but also reduces the water resources and reagents consumption.
 
Specifications

Model Item	HZCIL-1	HZCIL-2	HZCIL-3
Capacity (MT/h)	1	2	3
Inlet size D80 (mm)	18	18	18
Grinding size (mesh)	200	200	200
Ambient temperature (ºC)	-15~45	-15~45	-15~45
Gold comprehensive recovery (%)	85~95	85~95	85~95
Single HZTank leaching duration (h)	12.6	12.8	12.7
Moisture percentage of tailings residue (%)	<15	<15	<15
On-site installation period (days)	7	7	10

1. What is the main business scope of your company?
HZE is a company with R&D center, design institute, manufacturing factories, installation and commissioning teams. Our customers are in the mining and mineral processing fields. Our major businesses include mineral processing EPC (engineering, procurement and construction), project consultation, engineering design, mineral processing equipment manufacturing, on-site installation, commissioning, staff training, customer project operation management, spare parts supply and technical support. Customers are free to choose any one or any combination of our services.

2. What are the outstanding advantages of your company?
The one-stop service of mineral processing engineering project and equipment is our core competitiveness.
The most important feature that HZE distinguishes itself from other engineering companies, design companies or consulting companies is that we are also an equipment manufacturer with a production plant of 50,000 square meters, and we have complete manufacturing rout and the related equipment.
HZE distinguishes itself from other equipment manufacturers by owning its own R&D center and engineering design institute.
HZE distinguishes itself from many mining machinery enterprises by possessing an expert team with members including not only senior engineers of the company, but also top Chinese technical experts, university professors and researchers.

3. What are the characteristics of your company's 3D design?
HZE not only uses 3D software to design equipment, but also uses 3D software to design process flow, pipeline, steel structure, auxiliary facilities, etc. of the whole mineral processing project. We even use 3D design for equipment packaging, container packing and equipment instructions manual. This greatly improves the quality of equipment and engineering, shortens the construction period, facilitates technical discussion and evaluation, facilitates project management, improves construction safety and reduces project cost.

4.  What are the service features of your company?

1. Customers who whether buy our equipment, or entrust us with EPC, or require us to provide a certain service, cooperate closely with us to carry out specific operations and supervise our implementation throughout the process.
2. HZE will try to understand the basic situation and needs of customers as detailed as possible before the sale, formulate a preliminary plan according to the specific situation of customers, and get unanimous opinions after communications and discussions with customers to determine the plan.
3. We set up customer files for every customer who signed the contract with us and upload them to the Cloud where customers can also get an account and password. Customers can have all the documents, videos and pictures, technology, services, execution, operation, management and control, maintenance and so on related to the business.
4. Whether it is in the process of general contracting, equipment manufacturing or providing some kind of service, we welcome customers to know about our implementation on the spot or through the network, and put forward requirements and opinions.
5. We assist users who have used our products to formulate operation specifications and make suggestions on maintenance plans and spare parts inventories. In addition to routine on-site installation, commissioning and training, during the production period after we handing over equipment to customers for use, we often understand the equipment using situations through the network and provide guidance and training to customer management and operators.
6. For the clients who have just start the mining business, we provide the opportunity of training and practice in China's mines for the clients' employees, until they are skilled in operation and maintenance.