How to choose economical and reasonable mining methods for different mines?

By -

 Mining method is the core of mining. It can be said that the choice of mining method determines the operation of the entire mining system. The selection of a correct and reasonable method of mining for a mine plays a decisive role in the future production and operation of the mine. Inferiority determines the mining efficiency, production scale, ore recovery rate, and ore quality of the mine. The method of mining is restricted by many factors, such as the geographical location of the ore body, the stability of the ore rock, the type of ore, the taste of the ore, and the depth of burial.



Although the burial elements of mineral deposits vary widely, in general, some rules can be summarized for the selection of mining methods, which are mainly divided into the following four situations:

1. If the buried depth of the ore body is shallow, and the extension depth is also shallow, all deposits are mined in open pit.

2. If the buried depth of the ore body is very deep, underground mining is adopted for all deposits.

3. If the burial depth of the upper part of the ore body is shallow, and the extension depth is very deep, the upper part of the ore bed adopts open-pit mining and the lower part adopts underground mining. In this case, in the middle of production, a transition period from open-pit mining to underground mining is needed.

4. The upper part of the ore body has a deeper buried depth, and the extension depth is shallower, all of which may be open-pit mining or all underground mining.

Comments

Post a Comment

Popular posts from this blog

【Phosphate ore flotation】Phosphate ore beneficiation and flotation reagents

By -
Image
Phosphorus is an important raw material for the production of phosphate fertilizer, yellow phosphorus, phosphoric acid, phosphide and other phosphate products, and is a non-renewable and alternative resource. The reserves of phosphate rock resources in my country are relatively large, but more than 70% of them are low-grade and lean ore, which cannot be industrialized only by the scrubbing process. At present, medium and low-grade phosphate rock resources are mainly used for enrichment, and the flotation effect of phosphate rock depends on the interaction between mineral particles and air bubbles in the water medium, among which flotation reagents are particularly important. Commonly used flotation processes for phosphate ore beneficiation are: positive flotation, reverse flotation, first positive then reverse flotation, first reverse then positive flotation and double reverse flotation. 1. Positive flotation process of phosphate rock The process is to grind the phosphate rock until th
Read more

Selection of spodumene flotation reagents

By -
Image
At present, the  beneficiation methods of spodumene  mainly include: manual separation, thermal disintegration, magnetic separation, resuspension method,  flotation method  and combined beneficiation method. Among them, the flotation method of spodumene is the most studied in the laboratory and the most widely used mineral processing method in industry. 1. Cationic collectors The cationic collectors used in the flotation of spodumene ore are mainly amine collectors, which flotate gangue minerals such as quartz, feldspar and mica under acidic conditions, and leave the spodumene at the bottom of the tank. This method is often used in the roughing of spodumene, and cannot directly obtain spodumene concentrate with higher purity, and needs to be used in conjunction with other sorting methods. In production practice, Yan Gengsheng used  the process of flotation of spodumene  with mixed soap and diesel oil under alkaline conditions after flotation of mica with phylloylamine under acidic cond
Read more

How to use inclined plate thickener for tailings dry discharge

By -
Image
 Tailings treatment is an important part of mine production. Concentration in dry tailings discharge is an important link in achieving dry stacking. It not only directly affects the processing capacity of filter equipment, but also affects the resistance of filter cakes. The particle is resistive to the filter cake, so according to the characteristics of iron tailings, there is a new type of thickener . The flow of tailings slurry in the thickener is ideally slow. As soon as the solid particles leave the flow layer, they will be considered as sediment. This model is also called shallow sedimentation. The sedimentation occurs in the void between the inclined plates. Within the cavity, but due to the small spacing between the inclined plates, it creates favorable conditions for the formation of laminar flow. The clarified overflow water moves upward along the inclined plate space, and the solid particles settle between the two plates, and only need to settle to a small distance to fall o
Read more