If you ask a mine manager where their biggest cost-saving opportunities are, blasting rarely tops the list. Fuel, labour, equipment maintenance, explosive prices — these get the attention. Blasting is often treated as a fixed cost: drill the pattern, load the holes, fire the round, move on. Fragmentation Is a ...
Ask most blast crews what stemming does, and you’ll get a simple answer: it keeps the gas in the hole so the explosive does its job instead of venting uselessly out the top. That’s true, but it’s only half the story. The other half is about physics that most people ...
There’s a moment on every quarry face, right after the dust settles, when you can tell whether a blast worked. Big, angular boulders scattered across the muckpile mean trouble ahead — more secondary breaking, slower loading, a crusher that’s going to complain all shift. A tight, well-broken pile means the ...
Improper and uneven use of explosive energy results in uneven fragmentation, Boulders and dust, both of which are difficult to deal with. Boulders need secondary breakage and dust is a wastage. Use of stemming Plugs Stemming is the most critical part of blast geometry; inadequate stemming results in Flyrock, and ...
Flexible Liners What is a Flexible Liner Flexible liners are HDPE (High-Density Polyethylene) tubes that are flexible and can be easily inserted into the hole. When to use? Deck charging results in uneven distribution of explosives and will result in uneven distribution of fragmentation and may produce boulders from the ...
As a user of Explosives, you know bad quality of explosives can affect your productivity and costs. Inaccuracy in delay timing will increase the Vibrations attract complaints, increase boulder generation, and send entire Blast planning haywire. Quality Parameters of Explosives The Main Quality Parameters of Explosives are STRENGTH Others How ...
