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火试金粘土坩埚

名称:厂家 发布时间: 2022-05-31  点击数:0  
FIRE ASSAY CRUCIBLES / ASHES ASSAY CRUCIBLES

We supply high quality , multi-use Fire Assay Crucibles, Ashes Assay Crucibles and Scoriiers for the analysis of Precious Metals (Gold, Silver, and Platinum Group Metals) using the Fire Assay / Cupellation method (“Sgma”). Platinum group metals include:  ruthenium, rhodium, palladium, osmium, iridium, and platinum.

The process to analyse the above metals is the fire assay method. It consists of melting a sample along with other assay fluxes under high temperature, and reducing conditions. It is possible to Fire Assay the  following materials:

 ● Ores coming from Gold mines,  and Geological Labs. This ores consists of samples of drill cores, trenches or grabbing.

 ● Mineral concentrates and electrolytic slimes. Copper smelters are the most common processors of mineral concentrates. 

 ● Scraps & Residues (ashes) from sweeps, filings, lemel or catalysts . Precious metal refineries recycle these materals.


PROPERTIES OF OUR FIRE ASSAY CRUCIBLES AND ASHES ASSAY CRUCIBLES

Our universal fire assay crucibles and ashes assay crucibles material of construction is fireclay mixed with other refractory materials. They withstand temperatures up to 1300`C.

This composition and their design give them an excellent resistance against flux attack, erosion, cracking and thermal shock. They can therefore work under harsh conditions, and have a longer life. Furthermore, they have a high resistance to thermal shock,  and produce a faster fusion,  and constant melting speed . 

Another important feature of our fire assay crucibles, is that they are very stable because of their wide base. This is particularly relevant for furnaces that have an irregular ground due to flux attack and erosion.

Last but not least, their dense body also minimizes absorption losses.

FIRE ASSAY CRUCIBLES

Our Universal Fire  Assay Crucibles  most common use is to melt auriferous ores and concentrates. 

Their design allows nesting, and we therefore obtain an optimal space utilization in the warehouse, and minimal transport costs to any location.

The capacity of these crucibles ranges  from 1 to 2-¼ assay-tons and suit most Assayers’ jobs. :

Ref 30P 40P 50M 55M 65M
Nominal ore sample:
(g)
(assay ton)
Volume (ml)

30
1
240

40
1,5
340

50
1,75
435

55
2
390

65
2,25
550
Dimensions in mm:
Ø – Upper External / Internal 
Ø – Down External
Height

88 / 74
55
107

90 / 80
59
135

103 / 91
57
143

90 / 80
57
158

106 / 91
57
164
Weight (g) 480 500 570 620 720
Packing:
Carton 38 x 38 x 31 cm
Crate 116 x 116 x 96 cm

64
2040

48
1680

36
1440

48
1380

27
1200

Range of Universal Fire Assay Crucibles

 

Ref SH30 SH40 SH50 SH55 SH65 AC1 AC2
Capacity
(g)
(assay ton)
Volume (ml)

30
1
240

40
1,5
340

50
1,75
435

55
2
390

65
2,25
550

60
2.1
530

65
2.25
580

Dimensions:
Ø Up Ext.
Ø Up Int.
Ø Down Ext.
Height

86 
74
50
107

90
78
59
135

103
91
57
148

88
74
57
155

106
91
57
164

103
86
57
130

110
96
70
128
Weight (g) 480 500 570 620 720 590 700
Packing:
Carton
Crate 

64
3060

48
1700

36
1500

48
1500

27
1200

40

40




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