crushing rollers for detonating cord

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  • PROCESS AND APPARATUS FOR PREPARING

    Another length of the detonating fuse was removed before passing through the crushing rollers, and then tested for detonating ability. The fuse detonated only 7 inches out of a 16 inch length, thus evidencing the importance of crushing, in imparting the necessary sensitivity to the fuse.

  • Cited by: 17
  • Detonating cord cutter Owen Oil Tools, Inc.

    1998-2-11 · The cap crimper tends to pinch the detonating cord, crushing the crystals forming the powdered explosive. This poses a safety hazard in itself. Further, this pinching action also tends to loosen the packed powdered explosive at the newly cut ends. This loose powder is usually lost so that the core explosive tends to be recessed from the end of

  • Cited by: 4
  • US6123001A Detonating cord cutter Google Patents

    A device for cutting a detonating cord having an explosive core is provided. The device includes a detonating cord holding member having a cord holding portion, such as an aperture or recess, configured to closely receive the detonating cord so that the detonating cord is held in place relative to the holding member. The cord holding member also has a side surface from which the detonating

  • The safe use of shock-tube and detonating cord systems

    2009-8-27 · The detonating cord (Refer to Figure 2) The lowest core load detonating cord is recommended for use with the non–electric delay detonators, in the shaft sinking applications. The detonating cord has a core load of 3.5g/m of PETN, which is encased in a series of ribbons and yarns for maximum tensile strength and abrasion resistance.

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  • Detonating cord (1.1D) Orica Mining Services

    2010-7-13 · Detonating cord (1.1D) Safety Data Sheet 3rd Hazards identification Possible dangers: Fire, heat, electrostatic or mechanical effects may cause the articles to explode. With proper use and handling there is no health hazard. The intact detonating cord are also not hazardous to health. Mass explosion hazard. 4th First aid measures

  • Impact Crusher SHANDONG RESPOWER

    China Impact Crusher catalog of 40-120tph Impact Crusher PF1010, 40-100tph Impact Crusher with High Quality and Good Price provided by China manufacturer

  • The Effects of Blasting on Crushing and Grinding

    2013-4-21 · subjected to blasting by one and by two pieces of detonating cord (1996). For taconite, a substantial reduction in work index was calculated. The reduction was greater for the two detonating cord case than for the one cord test. We have used data about core dimensions and the detonating cord used, found in their paper, to calculate a powder factor.

  • Different Types of Conveyor Idlers Quarrying &

    The return idler group composed of two rollers is called V return idler group. Usually used for long-distance land conveyors, suitable for applications requiring heavy, high-tension fabrics and steel cord conveyor belts. Two rollers have a higher rated load than a single roller, which can provide better belt support and belt training.

  • A method of manufacturing igniter cord

    The cord consists of a powder core, the inner and outer braids. Known igniter cords patent RU 2065847 from 5.06.92, EN 2170222 from 24.02.2000. A known method of manufacturing a detonating cord according to the patent RU 2151758 from 03.09.1998, the essence of which consists in the manufacture of cord directly to the point of blasting.

  • Used & New Crushing, Screening, Conveying

    45RC 11-6203 closed circuit crushing plant. 200 HP 45’’ roller cone,6×20 3 deck screen, 40 HP screen motor, 36’’ O.H feed belt, 54’’ U/S screen belt (4) hyd. jacking legs,100 ft power cord package POR

  • P&Q University Lesson 4- Drilling & Blasting : Pit &

    2019-8-28 · The detonating cord must be compatible with the delay system used. Surface delays provide good flexibility in blast tie-in to provide for the desired sequence of detonating holes. Delay units, ms connectors, are made that can be spliced into detonating cord trunklines and used to connect the blastholes together.

  • JE TDEMOLITION (PTY) LTD

    2019-8-28 · as rollers, ingots and pool iron. Splitting Action Produced by a ThunderJet Charge on a 900 mm Diameter Steel Roller (left) and a 900 mm x 1400 mm Steel Ingot (right) Jet Demolition has over 30 years’ experience in applied R & D of explosives and blasting techniques for industrial applications.

  • Explosives Health and Safety Authority

    Explosives require initiation and this is achieved through the use of detonators, detonating cord and in rare cases detonating fuse. Who Can Use and Handle Explosives? There are strict controls on who can be involved in the transport, storage and use of explosives and explosive products and a qualified shotfirer is always required to undertake

  • Explosive Manufacture of black powder Britannica

    2021-5-8 · Explosive Explosive Manufacture of black powder: Manufacture of black powder was accomplished originally by hand methods. Ingredients were ground together with a mortar and pestle. The next step was to use crushing devices of wood (wooden stamps), also operated by hand, in wooden or stone bowls. The stamping process was gradually mechanized and, about 1435, the first powder

  • explosives SlideShare

    2015-7-27 · RDX is sometimes used in place of PETN for high temperatures, because the melting points are, respectively, 203.5° and 140° C (398.3° and 284° F). Detonating cord has many applications in blasting. Any number of holes can be connected with it in just about any desired pattern.

  • Federal supply classes Win

    1375 Demolition Detonating Cord Clips 1375 Demolition Firing Devices 1375 Demolition Inert Accessories 3820 Quarrying Crushing Equipment. 2640 Quick-cure Gum, Tire Rebuilding Materials [return to top] R 3890 Sheepsfoot Rollers, Construction Equipment 9450 Sheet Bar, Nonmetallic Scrap

  • (PDF) Drilling Engineering Neal Adams arturo

    Academia.edu is a platform for academics to share research papers.

  • Mines safety alerts Department of Mines, Industry

    Royalties Online System for Western Australian mineral and petroleum producers to electronically prepare, lodge and view royalty returns and production reports. About Access; Interactive geological map (GeoVIEW.WA) An interactive, GIS-based mapping system. Construct your own geological map and incorporate other mineral and petroleum exploration datasets including mines and mineral deposits

  • (PDF) SURFACE AND UNDERGROUND MINING

    35 Full PDFs related to this paper. READ PAPER. SURFACE AND UNDERGROUND MINING TECHNOLOGY

  • AP state schedule of rates 2012 SlideShare

    2013-1-15 · AP state schedule of rates 2012 1. GOVERNMENT OF ANDHRA PRADESH SCHEDULE OF RATES AS PER A.P. REVISED STANDARD DATA FOR THE YEAR 2012-2013 (Effective from 1st June, 2012) BOARD OF CHIEF ENGINEERS

  • Department of Resources

    2019-10-21 · CRUSHING, CONTUSION AND FRACTURE INJURIES TO PERSONNEL Belt system inspection Use Of High Energy Detonating Cord Wet area down Evaluation of dust potential Failed Idlers/Rollers Generate Frictional Heat Which Ignites Belt/Coal When System Stops

  • Federal supply classes Win

    1375 Demolition Detonating Cord Clips 1375 Demolition Firing Devices 1375 Demolition Inert Accessories 3820 Quarrying Crushing Equipment. 2640 Quick-cure Gum, Tire Rebuilding Materials [return to top] R 3890 Sheepsfoot Rollers, Construction Equipment 9450 Sheet Bar, Nonmetallic Scrap

  • Glossary,MAG Silver Corp

    MAG Silver Corp. (MAG: TSX NYSE A) is a Canadian exploration and development company focused on becoming a top-tier primary silver mining company, by exploring and advancing high-grade, district scale, silver-dominant projects in the Americas.

  • Disposal of Surplus Explosives Health and Safety

    Disposal of Surplus Explosives. Regulation 46 of the Safety, Health and Welfare at Work (Quarries) Regulations 2008 state that no person, other than an explosives supervisor, a shotfirer or trainee shotfirer, shall dispose of surplus explosives, detonators, accessories or packaging remaining following shotfiring operations at a quarry.

  • (PDF) Drilling Engineering Neal Adams arturo

    Academia.edu is a platform for academics to share research papers.

  • Mines safety alerts Department of Mines, Industry

    Royalties Online System for Western Australian mineral and petroleum producers to electronically prepare, lodge and view royalty returns and production reports. About Access; Interactive geological map (GeoVIEW.WA) An interactive, GIS-based mapping system. Construct your own geological map and incorporate other mineral and petroleum exploration datasets including mines and mineral deposits

  • Occupational Health and Safety Act R.R.O. 1990, Reg. 854

    2019-9-17 · (7) Where detonating cord is used, (a) loading shall be completed in all holes; and (b) all equipment not required for the loading operation shall be removed from the blast site before, (i) cords are interconnected between holes or attached to trunk line circuits, and (ii) delay devices or initiating detonators are attached to trunk line circuits.

  • BIS -National Laboratory Directory

    National Laboratory Directory,Laboratory Directory,Testing Facilities,Indian Standards,Indian Standards Specifications,Product Testing Facilities

  • Preamble Telangana

    2019-12-6 · However, if the metal is obtained by hand broken, machine crushing charges shall be deducted. 2) If the material is obtained by hand broken from surface boulders/canal spoil, the blasting and crushing charges shall be deducted.

  • AP state schedule of rates 2012 SlideShare

    2013-1-15 · AP state schedule of rates 2012 1. GOVERNMENT OF ANDHRA PRADESH SCHEDULE OF RATES AS PER A.P. REVISED STANDARD DATA FOR THE YEAR 2012-2013 (Effective from 1st June, 2012) BOARD OF CHIEF ENGINEERS