Fire Assay Crucibles

DECENT Bullion Blocks
Magnesia Bullion Blocks
Refractory Bullion Blocks
Cupellation Bullion Blocks
Magnesia Refractory Bullion Blocks
DECENT Bullion Blocks
Magnesia Bullion Blocks
Refractory Bullion Blocks
Cupellation Bullion Blocks
Magnesia Refractory Bullion Blocks

Bullion Blocks

Magnesia Bullion Block is a shallow, porous block with multiple holes, made from pure Magnesite, in which gold or silver can be refined or assayed by melting with a blast of hot air which oxidizes lead or other base metals.

Product Details

Magnesia Bullion Block is a shallow, porous block with multiple holes, made from pure Magnesite, in which gold or silver can be refined or assayed by melting with a blast of hot air which oxidizes lead or other base metals.

[ Advantages ]

• Great mechanical strength, and are not affected by atmospheric conditions (not hygroscopic).
• The prill or bead does not adhere to the fire assay cupel surface,
• When using DECENT magnesia bullion blocks, the assay has a reduced tendency to freeze.
• No cracking or spiting, and the beads do not attach to the fire assay cupel surface.
• DECENT magnesia cupels provide security and quickly absorb great amounts of litharge without cracking or pitting.
• Our magnesia bullion blocks allow for reducing the Cupellation temperature and time, resulting in minimal losses, higher accuracy and better yields.
• Perfect uniformity of Quality of DECENT magnesia bullion blocks

• Quality and performance are continuously improved

[ Features ]

• Made of high-quality magnesia, Bone Ash, etc.
• High casting density.
• With extremely low Gold and silver content, can get more accurate test results,
• Widely Used for smelting and assaying
• High-temperature resistance and resistance to thermal shock
• Can be used 3-5 times for the crucibles for fire assay.

• Free samples are available.

[ Technical Parameters ]

Bullion Blocks Data (Bevelled Edges)

Size of Bullion Blocks

No of holes

Length- wise

Width-wise

a (mm)

b (mm)

c (mm)

d (mm)

4 HB

4

2

2

4

4

4

4

4 SAHB

4

2

2

5

5

6

6

6 HB

6

3

2

2.5

2.5

5

5

6 HB(T)

6

3

2

5.25

4

5.5

4

10 HB

10

5

2

5

5

6

4.5

12 HB

12

4

3

3

3

6

6

12 HB(L)

12

6

2

5.25

5.25

5.5

4.5

14 HB

14

7

2

3

3

2

2

21 HB

21

7

3

3

3

2

2

24 HB

24

6

4

4

4

4

4

24 HB(L)

24

6

4

5.5

4

5.5

5.6


Bullion Blocks Data (Straight Edgeds)

All dimensions in"mm"

Size

No. of Holes

Length of Block

Width of Block

Height of Block

Dia of Cup

Depth of Cup

Height of Ridge

Height of Bevelled Edge from Base

Weight (Approx)



L

L1

W

W1

H

D

H1

H2

H3

g

4 HB

4

48

--

48

--

20

18

6.5

--

--

97

4 SAHB

4

80

--

80

--

26

30

9

--

--

321

6 HB

6

76.5

--

51

--

20

20.5

8

--

--

150

6 HB(T)

6

82

72

60

50

20

22

7

6

14

184

10 HB

10

138

128

60

50

20

22

7

6

14

307

12 HB

12

80

--

60

--

20

14

7

--

--

204

12 HB(L)

12

165

155

60

50

20

22

7

6

14

375

14 HB

14

179

--

54

--

20

20

7.5

--

--

367

21 HB

21

172

162

76

66

20

22

7

6

14

476

24 HB

24

124

114

84

74

20

16

7

6

14

402

24 HB(U)

24

165

--

120

--

20

21.5

7

--

--

830


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