Blastbag Application Minimising Damage to Final Pit Wall in Blasting

• Customization: Available
• After-sales Service: Online Service
• Keyword: Blast Bag
• Model NO.: BLASTBAG application Minimising damage to final pi
• Color: Yellow
• Diameter: 90-310
• Blasting Pressure: Not Less Than 0.2MPa
• Expiration Date: 12 Months
• Installation Time: 30 Seconds
• Transport Package: Cartons
• Specification: BJQ-115mm
• Trademark: KUANGBAO
• Origin: China

Product Description

Common knowledge of mid-deep hole blasting interval
In order to reduce the blasting cost, interstitial filling is often used.

Advantages:
Saving on explosives
Stemming enhancement
Lower vibration and over pressure levels
Improved fragmentation
Inflatable design assures perfect seal off
Fast and easy to install

There are three ways to finish the interval:

Water interval filling, rock powder interval filling, gas interval filling
  The water interval filling is only easy to achieve at the bottom interval, and the operation is cumbersome, so most of surface mines are not selected this way.
  Although the rock powder interval filling saves some explosives, the blasting effect is relatively poor, and it is easy to produce large blocks in the interval position.
  Reasonable gas spacing can achieve non-coupling filling and rise the center height of the explosives. Its main advantages include the following:
I:keeping the explosion effect, the gas interval part does not contain explosives, which directly reduces the explosion cost.
II:It reduces the radius of the over-smash zone, expands the fracture zone of the rock, increases the stress wave effect and the action time of the explosive on the rock, which is conducive to improving the energy utilization rate of explosives, improving the crushing effect, and reducing the rate of large blocks. It provides favorable conditions for improving the loading efficiency after blasting.
III:Due to the action of the air column, the blasting vibration can be reduced, and the bottom gas interval is the most obvious.
IV: Gas bag can be placed anywhere in the hole. For the holes with large caves or cracks, they can be blocked by gas bags, which has certain benefits for filling and blasting effects.
V:Underground VCR mining, can use the gas bags to block and interval, the gas bag is convenient, accurate, safety. So gas bag spacing is adopted on the interval filling now ,especially  on the middle and deep hole blasting.
According to the position of the gas bag in the hole, there are three modes to space:
Charge amount:

90 holes loaded with 6 kilograms of explosives per meter

115 holes loaded with 10 kilograms of explosives per meter

140 holes loaded with 15 kilograms of explosives per meter

165 holes are loaded with 20 kilograms of explosive per meter.

Spacers can only be used for blast holes that are over 10 meters deep. Typically, for open-air medium deep holes that are 15 to 20 meters deep, one should be used for each hole, with a spacing height of 1.5 to 2 meters, which means a less explosive charge of 1.5 to 2 meters. Do not exceed 2 meters, this is more ideal, the post explosion effect is good, and the block size is even.

The gas spacer comes with a compressed gas cylinder, which is convenient to use. It is 60 centimeters long and can be adjusted in height by a rope. It can be spaced at any distance within the borehole, usually in the middle of the borehole. The gas is released from the borehole mouth to the desired interval position in about 30 seconds, which is sufficient time and does not block the borehole.

Product specifications

Model	Height(mm)	Stretching and Folding Meridian	Stretching Straight Meridians	Scope of Application
BJQ-90	600	180	114	90
BJQ-150	600	310	190	150
BJQ-200	600	410	254	200
BJQ-250	600	510	324	250
BJQ-310	600	610	381	310
We can design and manufacture according to customer's requirement of the Gas Bag

  We are one leading self-inflated Gas Bag manufacture. Our gas bag can bring big cost saving for open cut/quarry and UG mining operation. You can save explosives 10%~30% and improve fragmentation(big reducing crush cost) after applying for the gas bag. We have mass supplied it to many open cut mines and contractors such as Peabody Energy, BHP, Kinross, Orica.

Product Name: BlastBag
Other Names: Self-inflating bag
Chemical Family: Mixture
Recommended Use: Blast hole blocker, inflatable borehole plug
property                                                                      unit of measurement                                                                           typical value

Appearance	None	Device: components in packaging.
Device: properties	None	Secured aerosol within dual bladder bag
Aerosol chemical contents:
Boiling Range	°C	None
Density	g/ml	None
Explosive Limits in Air	% vol/vol	Not determine
Vapour Pressure (@ 25°C)	bar	Not determined
Vapour Pressure (@ 55°C)	bar	Not determined

Heat of Combustion	kJ/g	Not determined
Flash Poin
Chemical solubility:
in Water	g/l	Components: soluble
in other solvents	s (name)	None
Autoignition Temperature	°C	Not determined

  The values listed are indicative of this product's physical and chemical properties. For a full productspecification, please consult the Technical Data Sheet.

TOXICOLOGICAL INFORMATION: Aerosol Contents
  Acute Effects
Ingestion
  This product is unlikely to be ingested. If components inside packaging are isolated, swallowing components willresult in discomfort and gastric disturbances, but no narcotic effects are expected.
Eye Contact
  This product is unlikely to be in contact with eyes. The components are sufficiently isolated from accidentalcontact, but the fluid will result in redness, tearing, and irritation of eyes in large quantities.
Skin Contact
  This product is unlikely to be in contact with skin or hair. The components are sufficiently isolated fromaccidental contact, but the fluid will result in redness, swelling, and irritation of skin in large quantities.
Inhalation
  This product is unlikely to be inhaled in general use; however, avoid inhalation of this product. Inhalation ofexcessive carbon dioxide in confined spaces will result in asphyxiation.
Chronic Effects
  There are no expected chronic effects with this product.
Other Health Effects Information
  There are no other effects with this product, except in the situations of intentional misuse. Always comply withthe manufacturer's instructions when using this product.
Toxicological Information
  Oral LD50: Citric Acid (Rat): 11,700 mg/kgInhalation TCLo: Citric Acid (rabbit): no result 

Storage & Transport 
BLASTBAG is not classified as a dangerous good and so can be transported with no difficulty. However, it is recommended that BLASTBAG be stored in anundercover environment and kept in its box until use to prevent accidental damage and ensure the long life of the 
product.
BLASTBAG should be stored at temperatures above -11° Celsius (12.2° F) to ensure the fluid does not freeze.