Fire Assaying Magnesia Cupels Crucibles

  Cupels are magnesia or bone ash cup shaped containers used in assaying to separate precious metals from base elements such as lead. They operate as a "differential filter" and are porous to metal oxides, but not metals. Used in an oxidizing atmosphere, base metals are oxidized and are absorbed into the cupel. Since precious metals do not oxidize, they are not absorbed and are left on top of the cupel for weighing or further analysis.

Application :

It's widely used in Fire Assaying,Gold Assaying

Thransport: Air transport: 5-9 days; Ocean shipping: About one month.

Delivery Time:

1. Stock:delivery within 3-5 days after receiving your payment.

2. OEM/ODM:The normal Lead time is 15-40 days, which depends on your quantiy.

Features:

1. Made of Magnesite

2. Used for smelting and assaying

3. High thermal shock resistance

4. Magnesia: ≥95%

5. Silica, Silicon dioxide: 0-5%

6. Property: high refractoriness(1100 centigrade degrees),rapid absorption(70%),and recovery rate of 97%-98.5%,easy to use, without milling.

Notes:

We can do OEM and OBM According to your drawing and requirements.

Advantage:

1. High density

2. High hardness

3. Good corrosion resistance

4. Long lasting

5. Strong acid-base resistance.