Sheet 506 / 1

Page ► 2

Cupels & Blocks

22-May-13

C506_1_Mabor.doc

CUPELLATION OF PRECIOUS METALS

 

Made with high quality magnesia, MABOR cupels and blocks are renowned for their fine surface and constancy in weight and size, and are used by gold mines, precious metal refiners, alloy melters, assay offices, hallmarking, geological, test & umpire laboratories worldwide.

They provide security and will quickly absorb great amounts of litharge without cracking or pitting. The prill or bead will not adhere to their surface. Cupellation temperature and time are reduced and losses are minimal, achieving higher accuracy and better yields.

1. Single Cupels - Absorption (PbO) ~ 70% wt / wt @ 980 C

A wide range of sizes cover all assayers needs
Each size will suck in swiftly and without leaking the specified
charge of litharge

Widest Assortment

Gold & Silver
Alloys

 

 

 

Full
Fire
Assay

The right Cupel for every Assayer's Job

Gold & Silver Alloys Lead Foil + Sample + Inquart

From # 1 to # 2X: Silver analysis & microcupellation

From # 3 to # 6: Gold : bullion, white / yellow alloys

Full Fire Assay Lead Buttons

From # 7A to # 8S: Ores, ashes, sweeps, scrap

From # 9 to # 12: Concentrates, electrolytic slimes New►

From # 14 to # PC: Production of gold & silver

Size

Cu

pel

Cu

p

Wei

ght

Car

ton

Ref

H

Depth

Piece

Carton

Content

Price

#

m

m

m

m

g

kg

Piece

1

22

18.4

17.5

4.3

13

19.5

1440

*

2X

24

16.3

19

7

13

17.5

1296

*

3

26.3

17

21.3

7

16.5

18.6

1080

*

4

30.4

18.2

25.4

7.5

20

17.2

819

*

4A

27

22

24

6

22

20.5

900

*

PM

27

24

23.4

8

27.5

20.5

720

*

5

31.6

19.7

26.2

7

24.5

18.5

728

*

6

36.3

21.2

26.4

8.5

37.5

18

462

*

7A

39.7

28.5

31.2

11.8

59

18.5

300

*

7B

39.7

32

31.2

11.8

67.5

21.1

300

*

7X

39.7

35

31.2

11.8

76

23.6

300

*

8A

45.3

35

38

12.5

100.5

20.8

200

*

8S

44.0

40

38

14.0

107

20

180

*

9

51

29

40

10.5

109

21.7

192

*

9C

51

33.5

42

12

126

20.9

160

*

10

60

30.2

52.6

11.5

148.5

21.5

140

*

11

56.8

44

47.8

14.8

197

22.7

112

*

12

80.2

47

57.5

16.5

443

20.6

45

*

14

110

70

80

24

1187

19.7

16

*

15

150

130

120

40

4725

20.0

4

*

PC

254

161.6

184.7

55.4

16 kg

16.6

1

*

2. Bullion Blocks - Absorption capacity (PbO): ~ 8 g / hole

● Fully exploit Fire Assay's parallel processing capabilities
Allow full scalability to mass analysis production stage
Samples, duplicates, standards & blanks on same block
High accuracy - samples undergo equal ambient conditions
Save time reduce manipulation hazards Sq = 90
Stability is better due to larger base
Assays keep original array no misplace errors
Ideal for mass analysis of same carat alloy samples
Several bevelled blocks may be handled all at once

Tools: Block Handling / Block Loading: Bvl = 70

Scoops (BS) Forks (TF / BF)

Trays (P) Multi-Loaders (ML) New►

Size

Ed-

Dimensions

Cup

Weight

Carton

Tools

Ref

ge

L

W

H

Dpt

Pc

Ctn

Cont.

Price

Ref

#

angle

 

mm

 

m

m

g

kg

pc

BSTF

4HB

Sq

48

48

20

18

6.5

97

22.8

224

*

BS 4

4SAHB

Sq

80

80

26

30

9.0

321

19.8

60

*

BS 12

12HB *

Sq

80

60

20

14

7.0

204

22.2

105

*

BS 12

14HB

Sq

179

54

20

20

7.5

367

21.7

56

*

BS 14

6HBT

Bvl

81.5

60

20

22

7.0

184

22.8

120

*

TF 1

10HB

Bvl

138

60

20

22

7.0

307

19.2

60

*

TF1 /BF10

12HBL

Bvl

165

60

20

22

7.0

375

19.1

48

*

TF1 /BF12

18HB

Bvl

147

76

20

22

7.0

400

21.3

42

*

TF2 /BF18

21HB

Bvl

172

76

20

22

7.0

476

21.3

42

*

TF2 /BF21

24HB

Bvl

124

84

20

16

7.0

402

20.3

48

*

-

 

 

..

10 HB►
Bevel

4 HB
Square

12 HB-L ►
Bevel

◄ 6 HB-T
Bevel

14 HB ►
Square

◄ 12 HB *
Square
Microcupellation

Minimize Time / Losses

● Our Cupels "drive" at < 1000C :
● Shorter cupellation time
● Reduced Au / Ag losses

● No need to preheat

Load Straight to Furnace

..

Well layered cupel arrays :
fork in directly from box to furnace

MABOR is a registered Trade M

ark of SEP (Pty) Ltd. (formerly Mabor Ltd. UK)

 

 

● Unaffected by atmospheric changes / moisture
● Quick absorption of large quantities of litharge
● Special range for
micro-cupellation methods
● Manufacturing experience: 111 years !
● Continuous R & D + Testing in own assay lab
● ISO 9001 - ISO 14001 QM & EM Certificates

● Consistent low losses
● Reduced tendency to
freeze
● Robust mechanical strength
● Perfect uniformity of quality
● No spitting of lead
● Latest manufacturing machinery

● Absorption ~70% cupel weight at 980C
● Quality immune to storage time
● 20-kg box easy to handle / store
Beads easily removed
● Free from cracking and pitting
Accuracy 5 times better than ICP

 

Cupellation :CupelsBlocksInstructionsCertificatesTools Consumables Fire Assay: Crucibles AccessoriesParting / Annealing

Terms: Cupellation Fire Assay Reagents Other Methods Metals Context Index:Programme Brochure: MABOR