[mpa] Thrifty BP used by the Chinese

[Bob Svenson]

Here ya go Joel, another gem from Tom Schroeder - being the thrifty 
sort, I thought it might interest you.

	*Subject:* Chinese black powder replacement with costs - 71% cost 
reduction

*Item*

	

*%*

	

*Yuan/MT*

	

*$/MT*

	

*$/lb*

*Black powder (purchased)*

	

100

	

12000

	

1875.60

	

0.85

*Potassium perchlorate *

	

55

	

8500

	

1328.55

	

0.60

*Charcoal*

	

10

	

2000

	

312.60

	

0.14

*Potassium hydrogenphthalate *

	

30

	

9000

	

1406.70

	

0.64

*Rice Starch*

	

5

	

6000

	

937.80

	

0.43

*Manufacturing *

	

100

	

200

	

31.26

	

0.01

*KPH powder*

	

100

	

8075

	

1262.12

	

0.57

*KPH powder is 2.33 as effective as BP

71% cost reduction  using 1 g to replace

3.5 g as lift in  25 mm cake shells.*

	

	

	

	


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