GB1374940A - Borehole loading and apparatus therefor - Google Patents

Borehole loading and apparatus therefor

Info

Publication number
GB1374940A
GB1374940A GB2042173A GB2042173A GB1374940A GB 1374940 A GB1374940 A GB 1374940A GB 2042173 A GB2042173 A GB 2042173A GB 2042173 A GB2042173 A GB 2042173A GB 1374940 A GB1374940 A GB 1374940A
Authority
GB
United Kingdom
Prior art keywords
agent
borehole
hopper
fuel oil
ammonium nitrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2042173A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PPG Architectural Coatings Canada Inc
Original Assignee
Canadian Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canadian Industries Ltd filed Critical Canadian Industries Ltd
Publication of GB1374940A publication Critical patent/GB1374940A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure

Abstract

1374940 Loading boreholes with explosives CANADIAN INDUSTRIES Ltd 30 April 1973 [3 May 1972] 20421/73 Heading E1F Boreholes are loaded with an ANFO (ammonium nitrate/fuel oil)-type blasting agent by adding the components of the agent to a stream of air which is moving within a conduit 1 at a pressure less than 20 p.s.i. (preferably 6-20 p.s.i.) and a velocity of about 3000- 6000 feet per minute and directing the airentrained agent into a borehole through a flexible hose 9 having a convergent outlet 12. The agent may be discharged premixed from a hopper 2 via a rotary feeder 4 but in the embodiment shown the hopper 2 contains ammonium nitrate and fuel oil and additives are added separately in measured quantities from tanks 5 and 7. A constant diameter acceleration section 13 is attached to the outlet 12 and is centered by devices 14, 15. The borehole preferably has a diameter of at least five inches and, as it is filled, the hose is withdrawn either at a precalculated rate or as indicated by a charge level sensing device.
GB2042173A 1972-05-03 1973-04-30 Borehole loading and apparatus therefor Expired GB1374940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA141,237A CA948904A (en) 1972-05-03 1972-05-03 Borehole loading and apparatus therefor

Publications (1)

Publication Number Publication Date
GB1374940A true GB1374940A (en) 1974-11-20

Family

ID=4093151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2042173A Expired GB1374940A (en) 1972-05-03 1973-04-30 Borehole loading and apparatus therefor

Country Status (8)

Country Link
AU (1) AU469494B2 (en)
BR (1) BR7303196D0 (en)
CA (1) CA948904A (en)
GB (1) GB1374940A (en)
IN (1) IN137584B (en)
OA (1) OA04378A (en)
ZA (1) ZA731632B (en)
ZM (1) ZM4773A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187490A (en) * 1986-03-05 1987-09-09 Aeci Ltd Charging of explosives into boreholes
EP0330637A1 (en) * 1988-02-22 1989-08-30 Nitro Nobel Aktiebolag Blasting composition
US5271779A (en) * 1988-02-22 1993-12-21 Nitro Nobel Ab Making a reduced volume strength blasting composition
WO1998011401A1 (en) * 1996-09-12 1998-03-19 Appenzeller, Albert Method and device for producing explosives and filling of shot and blast holes
CN114061389A (en) * 2021-10-25 2022-02-18 石家庄成功机电有限公司 Ammonium nitrate fuel oil explosive conveying device and explosive truck

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462508B (en) * 1988-03-15 1990-07-02 Bengt Raadman PROCEDURE AND DEVICE FOR INTRODUCING EXPLOSIVE SUBSTANCES IN DRILL

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187490A (en) * 1986-03-05 1987-09-09 Aeci Ltd Charging of explosives into boreholes
GB2187490B (en) * 1986-03-05 1989-12-06 Aeci Ltd Charging of explosives into boreholes
EP0330637A1 (en) * 1988-02-22 1989-08-30 Nitro Nobel Aktiebolag Blasting composition
US5271779A (en) * 1988-02-22 1993-12-21 Nitro Nobel Ab Making a reduced volume strength blasting composition
WO1998011401A1 (en) * 1996-09-12 1998-03-19 Appenzeller, Albert Method and device for producing explosives and filling of shot and blast holes
CN114061389A (en) * 2021-10-25 2022-02-18 石家庄成功机电有限公司 Ammonium nitrate fuel oil explosive conveying device and explosive truck

Also Published As

Publication number Publication date
ZA731632B (en) 1974-10-30
ZM4773A1 (en) 1974-12-20
AU469494B2 (en) 1976-02-12
OA04378A (en) 1980-02-15
IN137584B (en) 1975-08-23
BR7303196D0 (en) 1974-06-27
CA948904A (en) 1974-06-11
AU5283673A (en) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees