Gold ore beneficiation is a complex and delicate process that aims to extract as much gold as possible from the ore. This process involves a variety of equipment and process flows. This article will introduce the commonly used equipment and process flows in gold ore beneficiation in detail so that readers can fully understand the process.
1. Crushing Equipment
Crushing is the first step in gold ore beneficiation. The purpose is to crush large pieces of ore into smaller particles, increase the surface area of the ore, and facilitate the gold dissociation in the subsequent grinding and beneficiation process.
🔨 Jaw crusher: commonly used for coarse crushing of ore, with the advantages of simple structure, large crushing ratio, and reliable operation. It can crush various soft and hard materials and crush large pieces of ore into particles of a certain size range.
🌰 Cone crusher: used for further crushing of ore, divided into standard type and short head type, suitable for crushing medium-hard ores, and can produce finer ore particles. Cone crusher can withstand large crushing force and is suitable for medium and fine crushing stages.
💥 Impact crusher: suitable for crushing ores with medium hardness or below, with the characteristics of large crushing ratio and uniform product particle size.
2. Grinding equipment
Grinding is to further grind the crushed ore to a suitable fineness for the subsequent beneficiation process.
🐾 Ball mill: It is a key equipment for ore crushing, which grinds the ore into fine powder through rotating grinding balls. According to different ore discharge methods, ball mills can be divided into two types: grid type and overflow type. Grid type ball mills are suitable for coarse grinding, while overflow type ball mills are suitable for fine grinding.
🌀 Classification equipment: Used in conjunction with ball mills to form a closed-circuit grinding process. Common classification equipment includes spiral classifiers and hydrocyclones, which are used to separate qualified products to avoid over-grinding, and can return unqualified coarse sand for re-grinding.
3. Ore dressing equipment
Ore dressing equipment sorts and extracts gold according to the differences in mineral density and physical and chemical properties.
🔍 Gravity separation equipment: including jigs, shaking tables, spiral chutes, etc. Gravity separation is based on the difference in mineral density and is suitable for recovering coarse gold. Jigs use the vertical alternating pulsation generated by water flow to separate ore particles of different densities and particle sizes according to specific gravity; shaking tables use shaking and water flow to separate minerals on the bed in layers and move in different directions to achieve separation; spiral chutes use the combined effects of gravity, friction, centrifugal force and water flow to separate ore particles according to specific gravity, particle size and shape.
Through the combination of these equipment and processes, gold ore dressing can effectively extract gold from ore, providing important technical support for gold mining.