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The separation principle of alluvial gold is to use gravity separation to recover the most of gold and its associated heavy minerals from the raw ore first, and then use gravity separation, flotation, amalgamation, magnetic separation, electric separation and other combined actions to separate gold and heavy minerals from each other to achieve the purpose of comprehensive recovery. The placer gold mining methods is usually divided into three operations: (1) Washing operations The cemented ore sand is separated by water immersion, washing and mechanical agitation, and the gravel, sand and clay are separated, and the clay and gold particles adhered on the gravel are cleaned. The ore washing operation includes three processes: crushing, screening and desliming. (2) Rough separation According to the characteristics of the mine can be divided into these modes: fixed sluice - shaking table process; fixed or vibrating sluice-jig machine-shaking table process; multi-stage jig machine-shaking table process; centrifugal concentrator-shaking table process. (3) Cleaning separation Heavy sand and mercury are mixed in a mercury mixing cylinder, heavy sand is not adsorbed by mercury and is removed, but the gold will be adsorbed into the mercury.
Main Machines
Vibrating screen
The function of vibrating screen is to divide the ore screen into two or more particle size ranges, and then the ores in different size ranges will be sent to different concentrators according to the needs.
Trommel Screen
Trommel screen is a washing and screening equipment for classification according to the particle size of materials, can remove the stone, gravel and impurities these non gold materials in advance
Rotary Scrubber (Heavy clay use)
Rotary scrubber uses a rotating cylinder and internal scraper, water, as well as natural pebbles and rocks in the material, to disintegrate clay, lumps and soft oxides
Jig Machine
Jig machine is a kind of separator which uses the pulsating vertical water flow to loosen the materials and separate them according to different density
Vibrating Sluice
Vibrating sluice perfectly combines the advantages of common gold sluice box and jig machine, but overcomes their disadvantages, such as easy caking and silting-up on the common gold sluice and large water consumption on the jig machine.
Centrifugal Gold Concentrator
Centrifugal gold concentrator is to increase the centrifugal force of minerals to expand the specific gravity difference between heavy minerals and light minerals, so as to achieve separation of mineral and gangue. It is widely used to separate fine gold
Shaking Table
Shaking table uses mechanical shaking and water washing to separate mineral particles according to density. It has high enrichment ratio and high separation accuracy. The gold can be obtained after one time separation.
Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 22 Feb, 2025, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
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Afrimart Online stands as Africa's foremost e-commerce hub, featuring an expansive array of product categories spanning electronics, machinery, toys, furniture, and more. Committed to excellence, our platform delivers swift and streamlined logistics and customs clearance solutions, offering a comprehensive one-stop service for cross-border imports.
Leveraging over three decades of international trade expertise, we ensure a seamless and hassle-free importing experience, providing top-tier products at competitive prices to meet the diverse needs of African consumers.
At Afrimart, we strive to process all orders promptly. Once the payment has been successfully cleared into our account, your order will be processed within 2 to 5 business days. Please note that this processing time excludes weekends and public holidays.
Following the processing of your order, the estimated delivery lead time ranges between 35 to 60 days. However, please be aware that this timeframe is subject to variations due to potential delays in shipping and customs clearance. While we aim to adhere to the original delivery schedule, unforeseen circumstances may occasionally extend the delivery window beyond the anticipated 35 to 60 days.
In the event of high demand or other factors leading to longer shipping times for certain items, we will communicate any expected delays during the initial order confirmation. We appreciate your understanding and patience as we work to ensure your order arrives as swiftly as possible.