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Blasting Iron Ore Boulders

Prediction of blast boulders in open pit mines via multiple

1/3/2016 Prediction of produced boulders (oversized crushed rocks) is a key parameter in designing blast patterns. In this study, the amount of boulder produced in blasting operations of Golegohar iron ore open pit mine, Iran was predicted via multiple regression method

Prediction of blast boulders in open pit mines via multiple

In this study, the amount of boulder produced in blasting operations of Golegohar iron ore open pit mine, Iran was predicted via multiple regression method and artificial neural networks.

(PDF) Prediction of blast boulders in open pit mines via

Case studyGolegohar iron ore complex is located in southern Iran which is a large producer of iron ore in the region. The mining method is open pit. Mine No.1 has a production elliptical pit with dimensions 800 m  3000 m (Fig. 1).

Prediction of blast boulders in open pit mines via multiple

The most important objective of blasting in open pit mines is rock fragmentation. Prediction of produced boulders (oversized crushed rocks) is a key parameter in designing blast patterns. In this study, the amount of boulder produced in blasting operations of Golegohar iron ore open pit mine, Iran was predicted via multiple regression method and artificial neural networks.

Geophysical Techniques Applied to Blasting Design AusIMM

One common problem for blasting in iron ore mines with significant weathering is the occurrence of large blocks of hard rock mixed with softer material. This situation causes a problem for blasting design and sometimes produces large boulders of rock that require a secondary blasting, as well as excavation difficulties. To minimise this situation, geophysical...

H BLASTING IN SURFACE EXCAVATION

Burden (B) :This is the distance in metres from a blasthole to the nearest free face and has the following approximate relation: B = 25D to 40D Or B = 25D to 30D for hard rock B = 30D to 35D for medium rock B = 35D to 40D for soft rock.

Chapter 8 BLAST DESIGN National Park Service

blasting conditions are both severe, the operator should use premium explosives, at least in the bottom one third of the drill hole. Clearing the toe, and therefore

More than 100 years of blasting Mine mesabitribune

Today, blasting is still used at the mines to release iron ore from the earth, but in today’s world, it’s much safer than years past. One of the big changes is the products used, said Ron Shoden, general manager of Viking Explosives in Hibbing.

drilling and blasting practices in iron ore mine in india

ABSTRACT: An audit of the blasting operation at a large iron ore mine in North America was used to improve production and lower costs. The audit reviewed the blasting practices in order to identify oppor-tunities for operational improvements.

Optimization of Blasting Parameters in opencast Mines

sorting of oversize boulders and secondary blasting, thereby increasing the cost of mining. Fines are also undesirable as indicates excessive explosive consumption. It is therefore desirable to have a uniform fragment distribution, avoiding both fines and oversized