Gold Mining Equipment

1Gold Mining Solution1

Alluvial gold ore is mainly mined from land surfaces or rivers or underground. There are various types of gold raw materials: alluvial gold, placer gold, sand gold, river gold, gold tailing, etc. The main gold beneficiation process includes feeding, washing, sieving, rough separation, final concentration, and refining. Because the gold density is much bigger than other minerals, so mainly uses gravity separation.

Compared with placer gold, rock gold ore has higher gold content and higher mining value, but the beneficiation process of rock gold ore is much more complicated than that of placer gold ore. Rock gold mines mostly use the flotation process and cyanidation process according to their characteristics.

Rock gold ore flotation process
Flotation is a beneficiation method used in gold beneficiation plants to treat rock gold ore and is often used to treat gold-bearing sulfide minerals with high floatability. The flotation process can maximize the enrichment of gold into sulfide minerals, and the tailings can be directly amalgamated or cyanided for gravity separation, and the beneficiation cost is low.

Rock gold mining first requires crushing, grinding, and other processes. The large stones are broken into a certain number of fine sand by crushing and ball milling, and then they can enter the gravity separation equipment for gold recovery. General crushing and ball milling equipment include a jaw crusher, sand making machine, ball mill, classifier, etc. If the conditions are limited, or the mountain is seriously oxidized and the stone is not hard, the ball mill can be used instead of the ball mill, and the crusher can be directly used for recycling to certain particle size, and then directly into the gravity separation equipment to recover the gold. This method without ball milling has the characteristics of low investment cost and low production cost. If it is a large rock gold mine, the rock gold mine is hard, and a ball mill must be used.

Heap leaching (HL) is a flexible and economical mineral processing method, commonly used to extract gold from low-grade gold ores. In this process, the ore is firstly crushed into fine particles. By spraying the leaching solution into the large piles, the gold-containing solution is leached. Then used the method of carbon adsorption, zinc powder displacement device, and so on to separate gold from the liquid.

Gold CIL (Carbon in Leach) Process is an efficient design for extracting and recovering gold from its ore. By cyaniding and carbon leaching crushed gold ore slurry simultaneously, the CIL process lowers the gold mining operation cost and increases the gold recovery rate to a degree of 99%. It has become the first choice of modern gold mining and beneficiation plant design.