Precautions for Operating a Jig Machine

A jigging machine is a gravity separation equipment that utilizes a vertical alternating medium flow (typically water or air) generated by intense vibrations to stratize mineral particles based on relative density. Through appropriate methods, it separately collects heavy and light minerals to achieve the beneficiation purpose.

Abnormal Phenomena and Causes of Irregular Bed Motion in Jigging Machine:
The bed is disordered, with uneven loosening in different parts and unstable, turbulent water flow. Inserting a hand into the bed reveals varying degrees of looseness, and the tailings contain intergrowths and liberated minerals.

Cause 1:
(1) Wear or blockage of the screen plate, or uneven installation or partial loosening of the screen;
(2) Excessive dilution of the feed slurry;
(3) Uneven distribution of the feed.
The bed is excessively tight and cannot loosen, making it difficult to insert a hand. The water level drops, and the bed may even become exposed. Ore movement slows down, with intergrowths appearing in the tailings, and in some cases, liberated minerals may also be observed.

Cause 2:
(1) High feed rate with coarse particle size, combined with small stroke and insufficient underscreen water;
(2) Widespread blockage of the screen or excessively thick artificial bed layer, high density, and coarse particle size;
(3) Excessive stroke frequency.
The bed is too loose, leading to unstable horizontal movement, with the water surface swaying left and right. Inserting a hand reveals no resistance, and the bed moves rapidly. The tailings contain liberated minerals or intergrowths, while the concentrate above the screen has high grade, but the concentrate below the screen has low grade.

Cause 3:
(1) Excessive stroke;
(2) Excessive underscreen water;
(3) Insufficient bed thickness or bottom sand layer, or overly fine particle size.

Precautions for Jigging Machine Operation:
(1) Before startup, inspect all components to ensure they are intact and securely fastened;
(2) The diaphragm area and belts must be free of oil stains;
(3) Regularly lubricate all grease nipples;
(4) The machine must be run idle until normal operation is confirmed, only then can it be operated under load.