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Comment choisir un concasseur de mine d'or en Afrique du Sud?
Through this article, you can learn the factors that should be considered when you choose a gold mine crusher.
Choose a right gold mine crusher in South Africa involves considering several factors to ensure efficient and cost-effective mining operations.
Understand the Gold Ore Type
Because different gold ore types require different crushers:
- Hard Rock Gold Ore: Requires heavy-duty crushers like concasseurs à mâchoires, concasseurs à cône, ou concasseurs à percussion.
- Soft Gold Ore: May require a combination of crushers, such as hammer crushers or roll crushers.
- Oxidized Ore or Alluvial Gold: Typically easier to process; choose equipment designed for fine crushing or gold extraction.
How to judge the hardness of gold ore?
Compare the ore with minerals on the Mohs scale1 (1–10). Gold itself has a Mohs hardness of 2.5–3, meaning it’s relatively soft. Assess the accompanying minerals (e.g., quartz has a Mohs hardness of 7, pyrite 6–6.5). If the ore contains significant quartz or other hard minerals, it will generally be harder.
- Scratch Test: Use a steel knife or other known materials to scratch the ore. Observe whether the ore scratches easily or resists the scratch.
- Hammer or Impact Test: Strike a piece of the ore with a hammer. Harder ores will fracture into angular pieces, while softer ores may crumble or deform.
- Crushability Test: Manually crush a small piece of ore using a pestle and mortar. Softer ores will break down easily, while harder ores will require more effort.
- Rebound Hardness Test: Use a portable Schmidt hammer to measure the rebound value of the ore surface. Higher rebound values indicate greater hardness.
Common minerals and their Mohs hardness
| Common mineral names | Mohs hardness |
|---|---|
| Talc | 1 |
| Gypsum | 2 |
| Or, silver, aluminum | 2.5-3 |
| Calcite, copper | 3 |
| Fluorite | 4 |
| Fer | 4.5 |
| Orthoclase | 6 |
| Pyrite | 6.5 |
| Quartz | 8 |
Crusher Types
Il existe de nombreux types et modèles de concasseurs de pierres. So you should choose a gold mine crusher from these crusher types:
- Concasseurs à mâchoires: Ideal for primary crushing. They can handle large rocks and provide a solid base for secondary crushing.
- Concasseurs à cône: Good for secondary and tertiary crushing. Suitable for producing fine particles.
- Concasseurs à percussion: Effective for medium hardness materials and generating uniform sizes.
- Hammer Crushers: Excellent for softer materials and for producing finer output.
- Concasseurs mobiles: Flexible and cost-effective for remote gold mines.
Exigences en matière de capacité
You should first figure out what capacity you need. Then choose the appropriate gold ore crusher according to the capacity you need.
- Small-scale operations may use compact crushers.
- Large-scale mining requires high-capacity crushers to process more material.
Our crusher types and capacity ranges
| Crusher Types | Capacity Ranges (e) |
|---|---|
| Concasseur à mâchoires | 15-1510 |
| Concasseur à cône | 45-2130 |
| Concasseur à percussion | 50-2000 |
| Sable faisant la machine | 60-640 |
| Concasseur giratoire | 2015-8895 |
| Concasseur mobile | 30-650 |
Efficiency and Energy Consumption
Energy-efficient crushers reduce operational costs, particularly in South Africa, where energy prices can be high. Look for crushers with:
- Low energy consumption.
- High crushing efficiency. As for how to improve the crushing efficiency of the crusher, you can visit another article: Quelle est l'efficacité de concassage du concasseur de pierre?. In that article, there is a detailed introduction to the measures and methods to improve the crushing efficiency of the crusher.
Durability and Maintenance
South Africa’s mining conditions can be harsh, so choose crushers made of durable, wear-resistant materials.
Opt for equipment that’s easy to maintain and has readily available spare parts locally.
SBM provides high-quality pre-sales consultation and after-sales services. We have professional engineers to provide installation and maintenance services. En outre, we also provide equipment accessories and wear parts. We provide high-quality services to ensure that the equipment is put into production as soon as possible and produces efficiently.
Budget and Costs
Factor of Choose a gold mine crusher in:
- Initial purchase cost. The purchase cost of a crusher varies according to your crushing needs, which include the type of crusher, the type of material to be crushed, the crusher capacity, and other requirements.
- Installation cost.
- Maintenance and operational costs.
Vendor Reputation and Support
Purchase from reputable manufacturers or local distributors who provide after-sales service.
Check for local availability of spare parts and technical support.
Environmental Regulations
Ensure the crusher complies with South Africa’s environmental and mining regulations, such as dust and noise control measures.
Recommended Brands and Suppliers in South Africa
A well-known supplier in the region include:
- Machines SBM: Offers a range of crushing solutions for mining, Known for robust and energy-efficient equipment.
- Mohs hardness is a mineral hardness scale that uses the relative scratch hardness of minerals. It was proposed by German mineralogist Friedrich Mohs in 1812. Mohs hardness is a relative scale and has no direct proportional relationship with absolute hardness. ↩︎