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Showing posts from June, 2021

MINING WITH GREEN EXPLOSIVES

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  In the microcosm of the mining and rock blasting the question similarly by many professionals in the field of earthmoving is – can mining be done effectively with green materials? The answer to this question to a large extent is – Yes, explosives can be made (i) nitrate-free, (ii) lead-free, (iii) eco friendly, and (iv) oxides-of-nitrogen free.    The prerequisites are to find out (a) nitrate-free oxidizers, and then go into the introduction of (b) fuels from Agri origin.    We have undertaken the development of this product. The theoretical parts in respect to (a) material selection, and (b) thermochemistry through simulation model GPeng are in good progress. We are hopeful of coming out of at least one eco-friendly product within one year time.

SOME GEL TYPES WITH HYDROGEN PEROXIDE

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  Making a gel of good structure, stability, and shelf life is a combination of a selection of the right materials in the right proportions, and the skill of making it with the right kinds of process types of equipment.  Unlike water & natural polysaccharides combinations, HP poses a challenge to get compatible with Rheology modifiers. The corrosiveness of HP to natural polysaccharides makes a big constraint in getting stable gels.  In our attempt to make gels of good shelf life with Hydrogen Peroxide (HP), we have carried out several experiments. The gels types achieved have very interesting structures. While we are yet to finalize the precise percentages of Water, HP, and the Rheology modifier it is thought nice to share some of the gel types:

THE GEL STRUCTURE & SPECIFICATIONS OF GUAR GUM

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  A couple of days back I wrote about - “The “r” Factor between the shelf life and gel structure”, and I am happy to note some curiosity by some professionals on the subject. This communication is to tell about one of the best specifications for GG for use in watergel and slurry explosives, in particular.

The “r” Factor between the shelf life and gel structure

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  The shelflife of watergel slurry explosive depends primarily on the structure of the gel developed through hydration and aeration of the polysaccharides with the aqueous solutions of the oxidizer (s).

THE ROLE OF WATER IN EXPLOSIVE FORMULATIONS

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Explosions at Serbia munitions factory on 4th June 2021

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  A series of explosions at a munitions factory in central Serbia forced the evacuation of workers and nearby residents. The blasts at the Sloboda factory in the town of Cacak early Friday caused a huge fire and panic but no injuries. It was not immediately clear what caused the detonations in an ammunition depot at the factory. Workers hid in the basement when the explosions started. Serbian President Aleksandar Vucic told reporters that early damage estimates reached up to 2 million euros ($2.4 million). Sloboda is the biggest munitions factory in Serbia. It was targeted in a 1999 NATO bombing campaign during the war in Kosovo. Officials said later Friday they expected the fire to be fully extinguished by next week and the factory to back in operation on Monday.

FIRE IN SANITIZER MANUFACTURING FACTORY IN PUNE on 7th JUNE 2021

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  FIRE REPORTED IN THE SANITIZER MANUFACTURING INDUSTRY 18, mostly women, dead after fire breaks out at a chemical factory in Pune On 07.06.2021, As many as 18 people have died after a fire erupted in a water purifying factory in Pune's Ghotawade Phata. As many as 18 people have died after a broke out in a water purifying factory at Pirangut industrial zone in Pune's Ghotawade Phata.   The fire erupted in the chemical packaging section of the water purifying chemical factory at Pirangut in Mulsi Taluka.   According to the Fire department, there were 37 workers in the factory. The officials have recovered 18 bodies while others have been safely evacuated.   Photfode added that five teams are at the spot to rescue those trapped in the factory and to bring the blaze under control. He said that the fire is now under control and the cooling procedure is going on. https://www.indiatoday.in/cities/pune/story/fire-erupts-in-water-purifying-factory-in-pune-1812032-2021-06-07 https://www

CHOOSING THE RIGHT FUELS FOR EXPLOSIVES FOR ROCK BLASTING

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THE ABSTRACT OF THE SAFEX NEWSLETTER - 74 (APRIL 2021)

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SHELF LIFE OF WATERGEL SLURRY EXPLOSIVES: THE PRACTICAL EXPERIENCES

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