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12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
Specifications
Place of Origin :
China
Top Hole Diameter :
14 mm (12HB) / 22 mm (12HB(L))
Working Temperature :
About 900 C
Material :
Magnesium Oxide (MgO)
Payment Terms :
T/T,L/C
Overall Size (12HB) :
80 x 60 x 20 mm
Approx. Weight :
204 g (12HB) / 375 g (12HB(L))
Model Number :
Cupel Block
Product Name :
Fire Assay Cupel & Cupel Block
Packaging Details :
Export-grade carton with shock-proof foam, custom packaging available
Brand Name :
Y&X
Cavity Layout :
4 x 3 (12HB) / 6 x 2 (12HB(L))
Certification :
ISO 9001:2015
Overall Size (12HB(L)) :
165 x 60 x 20 mm
MOQ :
1 Set
Price :
Negotiate
Hole Depth :
7 mm
MgO Content :
96%
Delivery Time :
15-30 working days
Description

12 Hole Magnesia Cupel Brick for Batch Fire Assay Gold and Silver Testing

The Y&X cupel brick is the multi-cavity upgrade of the classic single cupel. Built as a refractory brick with independently machined round cup holes, each hole works exactly like one single cupel, so a laboratory can run a whole batch of samples in one cupellation cycle. This 12 hole model processes up to 12 samples per run.

12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis Product Highlights

  • 96% high purity MgO formula with a special fluxing agent for superior absorption
  • Absorbs more than 70% of its own weight in lead oxide (PbO)
  • No cracking, pitting or lead spitting during cupellation
  • Each cavity performs identically to a single cupel, for batch consistency
  • One-piece brick body heats uniformly and reduces loading-position temperature deviation
  • Excellent thermal shock resistance, ready to use without pre-drying
  • Not affected by atmospheric humidity, no freezing tendency in any climate
  • Higher cupellation capacity per unit of furnace space
  • In-house laboratory quality testing with traceable batches
  • Custom cavity counts from 4 to 24 holes and custom packaging available

Cupel vs Cupel Brick Comparison

Magnesia Cupel: Single round cupel, 1 sample per run, flexible and economical for small sample volumes.

Cupel Brick: Multi-cavity rectangular brick, up to 24 samples per run, uniform heating, ideal for large sample volumes and standardized batch processing.

12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis Full Magnesia Cupel Brick Series Specifications

All dimensions in mm. Weight values are approximate. "--" means top and bottom dimensions are identical for that model. Models with values in the bottom / boss / bevel columns have a beveled profile.

12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis

Model Holes Hole Layout (L x W) Top L (mm) Bottom L (mm) Top W (mm) Bottom W (mm) Height (mm) Top Hole Dia. (mm) Hole Depth (mm) Boss Height (mm) Bevel Height (mm) Weight (approx. g)
4HB 4 2 x 2 48 -- 48 -- 20 18 6.5 -- -- 97
4SAHB 4 2 x 2 80 -- 80 -- 26 30 9 -- -- 321
6HB 6 3 x 2 76.5 -- 51 -- 20 20.5 8 -- -- 150
6HB(T) 6 3 x 2 82 72 60 50 20 22 7 6 14 184
10HB 10 5 x 2 138 128 60 50 20 22 7 6 14 307
12HB 12 4 x 3 80 -- 60 -- 20 14 7 -- -- 204
12HB(L) 12 6 x 2 165 155 60 50 20 22 7 6 14 375
14HB 14 7 x 2 179 -- 54 -- 20 20 7.5 -- -- 367
21HB 21 7 x 3 172 162 76 66 20 22 7 6 14 476
24HB 24 6 x 4 124 114 84 74 20 16 7 6 14 402
24HB(U) 24 6 x 4 165 -- 120 -- 20 21.5 7 -- -- 830

12 hole models: 12HB -- cavity layout 4 x 3, overall size 80 x 60 x 20 mm, top hole diameter 14 mm, approx. weight 204 g. 12HB(L) -- cavity layout 6 x 2, overall size 165 x 60 x 20 mm, top hole diameter 22 mm, approx. weight 375 g.

Applications

Large gold mine assay laboratories, high volume commercial testing institutions and precious metal refineries that need standardized batch cupellation with maximum efficiency. Pairs well with a Y&X cupellation furnace for a complete batch cupellation workflow.

Y&X focuses on the fire assay analysis field and supplies a full range of high purity magnesia cupels and cupel bricks. Contact us for a quote or custom specification.

Frequently Asked Questions

Q: Cupel or cupel brick -- which should I choose?

A: A cupel is a single round dish for small or individual samples; a cupel brick is a multi-cavity block that cupels many samples per run. Both use the same 96% magnesia material and the same working principle. Under 20 samples per day, single cupels offer flexible pairing; for larger batches, a cupel brick is more efficient and provides a more uniform temperature field.

Q: Why choose a 12 hole cupel brick?

A: It processes up to 12 samples in one cupellation run, a practical step up from single cupels for medium volume laboratories. The one-piece brick heats uniformly and reduces temperature deviation between loading positions, improving consistency across a batch. Available in two layouts: 12HB (4 x 3 cavities, 80 x 60 x 20 mm) and 12HB(L) (6 x 2 cavities, 165 x 60 x 20 mm).

Q: Do cupel bricks need pre-drying before use?

A: No. Cupel bricks can be placed directly into the cupellation furnace without pre-drying. The high purity magnesia formula gives excellent thermal shock resistance, so a brick at room temperature can enter the approximately 900°C working environment without cracking, saving preheating time and energy. If stored in extremely humid conditions (relative humidity above 85%), drying at 105°C for 2 hours before use is recommended.

Q: How should cupel bricks be stored, and what is the shelf life?

A: They have low storage requirements; store them in a dry, ventilated place at room temperature. Unlike traditional bone-ash cupels, magnesia bricks are not affected by atmospheric humidity and will not freeze or degrade. Under proper storage they keep long term with unchanged performance, with a shelf life of more than 12 months under standard conditions.

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12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis

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Product Detail
Place of Origin :
China
Top Hole Diameter :
14 mm (12HB) / 22 mm (12HB(L))
Working Temperature :
About 900 C
Material :
Magnesium Oxide (MgO)
Payment Terms :
T/T,L/C
Overall Size (12HB) :
80 x 60 x 20 mm
Contact Supplier
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis
12 Hole Magnesia Cupel Brick Multi Cavity Fire Assay Batch Gold Analysis

Y&X Beijing Technology Co., Ltd.

Verified Supplier
5 Years
beijing, beijing
Since 2014
Business Type :
Manufacturer, Trading Company, Seller, Exporter
Main Products :
Laboratory Rock Crusher, Laboratory Disc Mill, Laboratory Grinding Mill
Total Annual :
50000000-65000000
Employee Number :
20~100
Certification Level :
Verified Supplier
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