Small Scale Portable Modular Gold Processing Plant for Alluvial Deposits

• 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/Year

Product Description

Small Scale Portable Modular Gold Processing Plant for Alluvial Deposits

The following situations or difficulties are common in plenty of small gold mines:

1. Geological exploration is inadequate, proven resource reserves are small, scattered veins are narrower or shorter, which are not suitable for large-scale mining;
2. The mine owners lack sufficient funds to invest in medium and large-scale mines and need to make profits from small-scale mining and processing.
3. The mine traffic is inconvenient and not suitable for large-scale heavy equipments transportation, materials and power supply are shortage;
4. The lack of water resources in mining areas can not meet the continuous demand of water for medium and large-scale plant production;
5. There are a large number of artisanal or small-scale miners in the mining area who generally use sluice boxes, amalgamation with mercury or other old processing to recover gold, which is inefficient, low recovery, harms health and environmental pollution.
6. Some mine owners hope to transfer their processing plants to another mining area after a few months or one or two years of production.They do not want to repeat to set up new plants.
7. Small-scale mine owners hope to obtain the best general solution to recover gold directly by quickly setting up a processing plant for production and minimizing tedious work;
8. Many small-scale artisanal miners in the mining area hope that there will be a small-scale processing plant in the area.They send ores for processing in the plant for making better profits than the original processing by their selves.
9. Some mine owners who have mines with large reserves of resources worry that the risk of directly establishing large-scale processing plant is too high.They need to establish a small-scale plant as pilot to verify the actual processing effect and conduct economic evaluation, so as to provide the basis for final decision-making.
10. Previously processed tailings still contain valuable gold.The mining investors want to quickly build a small-scale processing plant with low investment to recover as much gold as possible from tailings under the lowest production costs.

Aiming at the demand of small-scale gold mining and processing, HZE design and manufacture the small-scale modular gold processing plants to recover gold from rocks, quartz veins, alluvial deposits or tailings by gravity separation, flotation, cyanidation or combination processing. Excellent solutions, advanced technology, complete functions, reliable and safe equipment, compact structure, unconditional installation locations, low-cost investment and simple construction make the modular processing plants become the shining stars of flexible, fast and efficient recovery of gold  and be favored by more and more mine owners.

The small-scale modular concentrator has achieved the following targets:
(1) Maximizing the utilization of mineral resources ensures high recovery and economic benefits;
(2) The advanced technology and processing are adopted to get rid of the harmful chemicals such as mercury completely and protect human health and natural environment;
(3) Energy, water and consumables are saved, the number of operators is reduced, the capital of investment and the cost of production are decreased.
(4) Installation is fast, operation is easy, running is reliable, and different functional modules are combined freely to achieve the maximum recovery of gold.
(5) Minimal civil work requirements and the construction period reduced very much.
(6) It is easy to containerized, shipped or transferred to another location and reassembled, even in the most remote locations in the world.

General Functional Modules

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.

Processing Modules
It is selected the general modules and the special modules to combine together to achieve maximum gold recovery.
The commonly used special modules are gravity concentration module, flotation module and cyanide leaching module.

Gravity Concentration
If the gold ore has much granular gold (free gold) which can be to recovered by gravity to get a good benefit.
The ore is the grinding circuit after the stage of crushing and screening.If the raw ore contains some sticky slime and clay, the washing equipment such as the trammel screen or scrubber should be added into the crushing circuit.
Commonly used gravity equipment includes jigs, centrifugal concentrators and shaking tables. The sluice boxes are also used as effective facilities for efficient gold recovery.
The concentrate obtained by gravity can be produced the ingots by pyrometallurgy or hydrometallurgy.
The tailings of gravity can be pumped to the tailings impoundment or sent to the circuit of flotation, cyanidation or others to recover the residual gold as much as possible.


Froth Flotation
The gold ore sent to the processing plant will be crushed, screened, and ground, then the slurry enters the flotation stage generally. Flotation acts to sulfides and free gold normally, and it is necessary to use appropriate chemicals for slurry mixing and gold recovery by flotation. Generally the flotation circuit includes rougher, scavenger and cleaner to obtain a satisfactory concentrate.
If the ore contains some free gold particles, gravity separation equipment is generally added to the grinding circuit to recover the particulate gold.
If the ore contains much oxides, some gold is difficult to recovered by flotation. It is possible to combine flotation and cyanidation to increase recovery.

Cyanide Leaching
Generally sodium cyanide is used for leaching gold from ground raw ore or re-ground concentrate to obtain pregnant solution. Gold in pregnant solution is adsorbed by activated carbon or precipitated by zinc.
Usually heap leach or vat leach extracts gold from low grade ore. Raw ore is leached on pad to get pregnant solution after crushing and agglomerating. Activated carbon absorbs gold out of pregnant solution.
Gold loaded carbon is processed by stripping and electrowinning to get gold slime. Pregnant solution is precipitated by zinc to produce gold slime.
The gold mud is smelted to cast gold ingots after a series of processing: pickling, separating other metals, washing, filtering, drying, etc. The purity of the merging gold ingot can reach over 97%. If purification is required, further processing is required.


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.





FAQ                                                                                                                             

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.