Here are the answers to the Frequently Asked Question(FAQS) on Green Explosives.

What product we are discussing about?

We are discussing about Green Explosives for rock blasting, tunnelling, etc.

Are these Green Explosives available in different forms?

Yes. These Green Explosives are formulated to manufacture :

  1. Cartridge and Bulk Slurries, and
  2. Cartridge and Bulk Emulsions.

Why should one go for Green Explosives?

One should go for Green Explosives because,

  1. its manufacture will reduce the use of regulated chemicals in the explosives formulations,
  2. it will also reduce the handling of hazardous chemicals during manufacture, storage, transport and use, and
  3. cost savings to the tune of ₹30,00,000 for every 10,000 tons of explosives manufactured.

What Technical Parameters are studied for these Green Explosives?

24 different explosives, thermodynamic and thermochemical parameters are studied and established for Green Explosives. The entire list of these parameters is:

  No

Output Parameters Established

UoM

01

Bulk Density (BD)

g/cc

02

Immersion Density (ID)

g/cc

03

Velocity of Detonation (VOD)

m/s

04

Trauzl Lead Block Expansion Value

cc

05

Lead Plate Dent Test

mm

06

Hot Cold Cyclic Test

months

07

OF (Oxygen Balance Factor)

No.

08

SF (Strength Factor)

No.

09

del H (Enthalpy)  

Kcal/kg

10

So (Entropy)

KCal

11

Gibbs Free Energy

Kcal/kg

12

Volume Expansion Considering Water is Gas

Percent

13

Volume Expansion Considering Water is Liquid

Percent

14

Mole of Oxygen Generated from Decomposition of OB

Mole/kg of Product

15

Mole of Oxygen Required for Complete Combustion of FB

Mole/kg of Product

16

Mole of Gases Generated from OB

Mole/kg of Product

17

Mole of Gases Generated from FB

Mole/kg of Product

18

Mole of Gases Generated from Composition

Mole/kg of Product

19

Absolute Bulk Strength   or  ABS   

Kcal/cubic meter

20

Absolute Weight Strength  (i.e. del H)

Kcal/kg

21

Relative Bulk Strength  wrt ANFO or  RBS_ANFO

Percent

22

Relative Weight Strength wrt ANFO or  RWS_ANFO

Percent

23

Relative Bulk Strength  wrt NG or  RBS_NG

Percent

24

Relative Weight Strength  wrt NG or  RWS_NG  

Percent

How are these Green Explosives comparable with the present improvised explosives?

These Green Explosives are identical to the presently available conventional improvised explosives such as slurries, emulsion and ANFO.

Each technical parameter of the explosives in vogue, as well as Green Explosives, can be technically compared with the help of

  1. laboratory testing,
  2. instrumental methods, and also through
  3. fields testing on the surface or inside blast-holes.

Let us take an example.

One of the Green Explosives has resulted in the following result.

  No

Output Parameters Established

UoM

Findings

01

Bulk Density (BD)

g/cc

1.15

02

Immersion Density (ID)

g/cc

1.27

03

Velocity of Detonation (VOD)

m/s

4500

04

Trauzl Lead Block Expanison Value

cc

370

05

Lead Plate Dent Test

mm

12

06

Hot Cold Cyclic Test

months

12

07

OF (Oxygen Balance Factor)

No.

0

08

SF (Strength Factor)

No.

18.81

09

del H (Enthalpy)  

Kcal/kg

-917.41

10

So (Entropy)

KCal

1516.79

11

Gibbs Free Energy

Kcal/kg

-962.91

12

Volume Expansion Considering Water is Gas

Percent

374.75

13

Volume Expansion Considering Water is Liquid

Percent

97.75

14

Mole of Oxygen Generated from Decomposition of OB

Mole/kg of Product

14.77

15

Mole of Oxygen Required for Complete Combustion of FB

Mole/kg of Product

39.53

16

Mole of Gases Generated from OB

Mole/kg of Product

153.52

17

Mole of Gases Generated from FB

Mole/kg of Product

67.64

18

Mole of Gases Generated from Composition

Mole/kg of Product

221.15

19

Absolute Bulk Strength   or  ABS   

Kcal/cubic meter

-1027.50

20

Absolute Weight Strength  (i.e. del H)

Kcal/kg

-917.41

21

Relative Bulk Strength  wrt ANFO or  RBS_ANFO

Percent

131.82

22

Relative Weight Strength wrt ANFO or  RWS_ANFO

Percent

89.33

23

Relative Bulk Strength  wrt NG or  RBS_NG

Percent

49.36

24

Relative Weight Strength  wrt NG or  RWS_NG  

Percent

61.70