Determining minimum burdens for quarry blasting

Using the rock type the designer can select the Powder Factor range suitable for the quarry. The face profiles will identify reduced burdens. Table below relates the explosives loading rate and the reduced burden to the expected ‘InHole’ Powder Factor (for a one metre section of 110mm diameter borehole)

Get Price

UG Explosives and Blasting SlideShare

Jul 14, 2016· UG Explosives and Blasting 1. K D PRASAD GM(Min)/(Vig) 2. Definition of Explosives : Explosives is a chemical compound or mixture, when exploded by action of heat, impact, gives large volume of gases in a very short time at high temperature pressure. Classification : All commercial Explosives are broadly divided in two categories. Low Explosives High Explosives

Get Price

The Quarry Story Vulcan Materials Company

Unless you’ve visited or toured a quarry, chances are you don’t know much about what goes on inside one. In the simplest terms, a rock quarry is a place where little rocks are made from big rocks. Although the basic process is the same, each quarry is different and some of the things in Quarry Story may not apply to all operations.

Get Price

Quarries (Explosives) Regulations (Northern Ireland) 2006

“detonator” means an initiator for explosives that contains a charge of high explosive fired by means of a flame, spark, electric current or shock tube; “excavation” means any place at the quarry where minerals are or have been extracted and includes the ground, faces or sides of the quarry and any other incline;

Get Price

Explosives and Blasting Agents Chemical Economics ...

Water gels and slurries may be either explosives or blasting agents. The many industrial and military uses for explosives and blasting agents—ranging from earth moving to seismic wave generation to materials modification to munitions to propulsion—have generated a host of sophisticated and specialized explosives products and delivery packages.

Get Price

BULK EMULSION EXPLOSIVE A CASE STUDY

A comparison is made with other types of explosives re­ garding costs for drilling and blasting. By using Bulk Emulsion Explosive it was possible to achieve a better breakage performance. In a copper mine this resulted in a decreased powder factor and thereby less cost for the explosive. In a limestone quarry …

Get Price

Characteristics of explosives : Pit Quarry

Mar 20, 2019· Two types of strength exist when comparing commercial explosive products: the relative weight strength (RWS) and the relative bulk strength (RBS). Properties such as detonation pressure and velocity of detonation are not strength indicators, as the shock from a commercial explosive has no effect on rock breakage.

Get Price

Controlled Blasting YouTube

Dec 06, 2007· Blasting with Ikon product from Orica. Two little sticks of dynamite, one big blast! (Micro Blaster and Visible Gold) Duration: 18:57. Dan Hurd 279,816 views

Get Price

Chapter 8 BLAST DESIGN National Park Service

The type and cost of explosives will vary from one operation to another, dependent upon many conditions. The geologic formation, such as hard seams, cap rock, hard bottom, or large toes, dictate the use of highenergy explosives. Waterfilled boreholes require the use of waterresistant products at a premium cost. The cost of a

Get Price

type of high explosives for quarry

Type Of High Explosives For Quarry Quarries and Explosives Leicestershire Quarry Vision. extracting for the production of cut stone, then high explosives will be used. In the UK, most. Get More Info. Using Of Explosive In Quarry SERVICE ONLINE GET PRICE. 20 Dec.

Get Price

Dangers of Toxic Fumes from Blasting Centers for Disease ...

research has been done on the toxic fumes generated by the detonation of high explosives and many countries have test procedures and formal or informal requirements in place for the maximum permitted fumes production by a given amount of explosives (Streng, 1971, Karmakar and Banerjee, 1984, and International Society of Explosives Engineers, 1998).

Get Price

Blaster's Training Modules Module 1 Explosives

The following three categories comprise generic types of explosives (specific types of explosives are addressed later on in the module): It is worth noting that water gels, slurries, and emulsion products can be formulated to produce either (1) capsensitive HE’s—by adding sufficient amounts of HE sensitizers—or (2) BA’s—by

Get Price

HANDLING OF MISFIRES IN MINES – Mining and Blasting

Dec 30, 2011· HANDLING OF MISFIRES IN MINES: Dealing with it is potentially most dangerous activity. 1. INTRODUCTION Misfire means the complete or partial failure of a blasting charge to explode as planned. The explosive or pyrotechnical products that remain in the ground or in the muckpile might be triggered by any mechanical effect during the digging,…

Get Price

explosives – Mining and Blasting

Jun 14, 2018· When priming blasting agents with holes up to 2 1/2 inches in diameter, a full cartridge of high velocity explosives like 60 percent ammonia gelatin, gels, slurries, or cast primers with a blasting cap, is a sufficient charge. For larger holes, the priming requires much more care, especially if the hole is wet or decked charges are used.

Get Price

quarry equipmentand types of explosive material being used

This page is about quarry equipmentand types of explosive material being used, click here to get more infomation about quarry equipmentand types of explosive material being used.

Get Price

100 Tonnes of HighExplosive BOOM! YouTube

May 04, 2007· 100 Tonnes of HighExplosive BOOM! Mark B. Loading... Unsubscribe from Mark B? ... Chevreaux Quarry Plasma Rock Breaking 2009 Duration: 2:52. georgeford299 95,230 views.

Get Price

Different Types of Explosives Used in Mining

Well, yes and no. From the ninth century AD (though the historians are still uncertain about the exact date of its invention) to the mid1800s, black powder was the only explosive available. A single type of explosives was therefore used as a propellant for guns and for blasting purpose in any military, mining and civil engineering application.

Get Price

Explosive Characteristics and Performance

Defined as ease of initiation of explosive ( minimum energy required to initiate detonation) Varies with composition, diameter, temperature and pressure High Explosive () defined as sensitive to No 8 strength detonator or 25 gr/fr cord, Blasting Agent requires a …

Get Price

Explosive Wikipedia

The largest commercial application of explosives is the mine is on the surface or is buried underground, the detonation or deflagration of either a high or low explosive in a confined space can be used to liberate a fairly specific subvolume of a brittle material in a much larger volume of the same or similar material.

Get Price

Quarrying Process And Quarry Products

On the day of the blast, the explosives are delivered and taken to the site of the blast. Detonator cord is placed in each hole and the holes are then loaded with high explosives to within a few metres of the top. The remaining depth is "stemmed" with quarry dust or fine aggregate. The site is cleared.

Get Price

Cast Boosters

is a leading supplier of Cast Boosters that is suited for a range of applications namely but not limited to Seismic acquisition work,Quarry applications,Small blast holes up to 150mm in diameter,Coal operations,Large diameter holes exceeding 150mm in diameter,Deeper blast holes, 25m and more,Underground development,Different diameter holes, and Excellent energy for bulk explosive …

Get Price

Quarry Blasting Explosives | Products Suppliers ...

Find Quarry Blasting Explosives related suppliers, manufacturers, products and specifications on GlobalSpec a trusted source of Quarry Blasting Explosives information. ... quarry drilling and blasting, large site excavation, ... Some explosives storage products are designed for a third type of high explosive. Tertiary explosives, or blasting ...

Get Price

Explosives Mining Types Reliable Security Information

High explosives include permissibles and other high explosives. ... Explosives Mining Types ... For quarry blasts, there is some material cast into the pit at eject angles greater than 45 ...

Get Price

Explosions and Blast Injuries

Classification of Explosives Explosives are categorized as highorder explosives (HE) or loworder explosives (LE). HE produce a defining supersonic overpressurization shock wave. Examples of HE include TNT, C4, Semtex, nitroglycerin, dynamite, and ammonium nitrate fuel oil

Get Price

Chapter 2 EXPLOSIVES National Park Service

commercial explosives ranges from to g/cc. For free running explosives, the density is often specified as the pounds of explosives per foot of charge length in a given size borehole. With few exceptions, denser explosives give higher detonation velocities and pressures. Density is an important consideration when choosing an explosive.

Get Price

Most powerful military explosive tamed for use

By being more powerful and safer to handle, the cocrystal presented is an attractive candidate to supplant the current military stateoftheart explosive, HMX. Most highexplosive antitank (HEAT ...

Get Price

EXPLOSIVE RISK MANAGEMENT Quality

The key processes are: risk assessments, threats analyses, characterization of system type, statement of performance and quality requirements, test and evaluation, choice of instrument and calibration. Subject matter experts on all types of improvised explosive device, including homemade and commercial explosives and their effects.

Get Price

Detonator Wikipedia

A detonator, frequently a blasting cap, is a device used to trigger an explosive can be chemically, mechanically, or electrically initiated, the latter two being the most common. The commercial use of explosives uses electrical detonators or the capped fuse which is a length of safety fuse to which an ordinary detonator has been joined.

Get Price

GUIDANCE ON THE SAFE USE OF EXPLOSIVES IN QUARRIES

To ensure the safety and security of the explosives there should be appropriate arrangements for authorising all movements of explosives to and from the place of use. On site, the identified authorised person usually supervises arrangements. Only authorised people should handle explosives at a quarry. There should be a storekeeper.

Get Price

Explosives Mining Types

Orica offers the widest range of globally consistent, high quality Packaged Explosives to the mining, quarrying and construction sectors. Our extensive range gives customers access to the very best in product performance – whatever their application, wherever they operate.

Get Price

Introduction to Quarries — University of Leicester

The first activity is a video which describes a large granite quarry in the UK and briefly introduces the various processes involved. A more detailed description is then given of the different types of operation, focussing on hard rock aggregates quarries, and with a definition of …

Get Price

Explosives Detonation

trinitrotoluene (TNT), are single chemical species, but most explosives are mixtures of several ingredients. "Low explosive" and "high explosive" classifications are based on the velocity of explosion, which is directly related to the type of work the explosive can perform. There appears to

Get Price
Top