Gravity Jigging Technology
GRAVICON designs, manufactures, and commissions gravity jigging machines, including both water-pulsated jigs and moving-sieve jigs.
Manufacturing time ranges from 1 to 3 months, depending on capacity and configuration.
A key advantage of GRAVICON jigs with elevator-free discharge is the dramatic reduction of circulating water infrastructure. This design not only lowers operating costs and increases mechanical reliability, but most importantly reduces the volume of circulating water settling tanks by 8–10 times, compared to conventional solutions.
Applications & Material Range
GRAVICON jigging machines operate in a water environment and are used for gravity beneficiation of:
coal; ferrous and non-ferrous metal ores (Mn, Cr, Sn, Pb, Ti, Ta, Nb, W, Ni, etc.); alluvial gold; diamonds; metallurgical and ferroalloy slags; coal waste dumps and technogenic deposits.
They ensure high separation efficiency across a particle size range of 0.2 to 200 mm.
Near the extreme limits of this range, specialized jig designs are applied.
Engineering Heritage & Custom Design
All major water-pulsated jig series produced across the CIS — including OM (12/18/24), MO, OMA, VHP, VBP, GRAVICON, and others — were originally developed by GRAVICON engineers, both during their work at the Gipromashugleobogashchenie institute and over more than 15 subsequent years within NPK GRAVICON.
This unique expertise allows us to always propose the optimal jig configuration for a specific task, or, when required, to design a jig exclusively for the client’s material.
As jig performance depends on compartment width (capacity) and total working screen length (separation quality), standard serial sizes rarely provide optimal results for specific raw materials. Based on laboratory beneficiation tests and required throughput, GRAVICON engineers design custom jigs that consistently deliver maximum economic efficiency.
This approach has led to the development of:
- jigs for oxidized coking coals;
- jigs for coarse-grained sludge;
- the largest and most productive two-section jig ever built, with a working area of 8.75 m² per compartment, compared to 6 m² for the largest standard MO318 machine.
GRAVICON jigging machines operate successfully in Ukraine, Kazakhstan, Uzbekistan, Turkmenistan, China, Mongolia, Guinea, Liberia, Angola, and other countries.
Why Jigging Remains the Most Efficient Method
When a material can be processed by jigging, this method consistently proves to be the most efficient based on the combined criterion “quality + throughput + processing cost.”
This is achieved through:
- very low energy consumption, several times lower than heavy-media separation and pneumatic methods;
- no chemical reagents, unlike flotation or heavy-media processes;
- low sensitivity to feed moisture, size distribution, and density;
- small operating crews with moderate qualification requirements;
- low capital expenditure and the shortest implementation timelines in the industry;
- exceptional process controllability, enabling fine tuning and production of up to four products in a single processing stage.
Automation & Performance Range
GRAVICON jigging machines are equipped with automated control systems that manage the jigging process and enable full integration into higher-level plant control systems, with access to all process parameters.
Typical performance ranges:
- 50–70 t/h (GRAVICON-5×2, mass ≤ 9.9 t)
- 100–120 t/h (GRAVICON-8×2, mass ≤ 15.9 t)
- 150–180 t/h (GRAVICON-12×2, mass ≤ 20 t)
- 200–250 t/h (GRAVICON-18×3, mass ≤ 28.5 t)
- 250–300 t/h (GRAVICON-17.5×2, mass ≤ 22 t)
All machines are designed for coal, ferrous and non-ferrous ores, diamonds, gold, slag dumps, and waste deposits.
The use of modern, certified electrical components and advanced control principles has allowed GRAVICON to completely eliminate non-standard equipment, significantly increasing overall system reliability