Products

DESCRIPTION

• Overview
• Product Description
• Chemical & Physical Analysis
• Product Parameters
• Application Industrial
• Use and Storage Method
• Company Profile
• FAQ

Overview

Basic Info.

Color	White, Light Yellow
Shape	Conical, Circular, Cylindrical
Type	Magnesia Ceramic Material
Certification	ISO
Transport Package	Paper Box Package or Wooden Case
Specification	As per your request
Trademark	TTWY
Origin	Qingdao, China
HS Code	6903200090
Production Capacity	1000000pieces/Year

Packaging & Delivery

Package Size34.00cm * 22.00cm * 22.00cm Package Gross Weight10.500kg

Product Description

Cupel is a porous refractory vessel, mainly made of magnesia or bone ash, specifically used for fire assay. It is an indispensable tool for detecting precious metals such as gold and silver.

• Cupellation : Under high temperature (usually 900ºC-1000ºC), place the lead button containing gold and silver into the crucible for heating.
• Impurity Absorption : Utilize the porous structure of the crucible to absorb oxidized lead (lead oxide) and other base metal oxides.
• Precious Metal Purification : Since gold and silver are not chlorinated and are not absorbed by the crucible, they will eventually remain on the surface of the crucible in the form of shiny gold and silver beads, thus achieving separation and quantitative analysis of precious metals and impurities.

Specifications

Commonly available in single-hole round crucibles and multi-hole plate crucibles (such as 12-hole, 24-hole plates) to improve the efficiency of batch testing.

More sizes Welcome to click the Chat/Contact Supplier Button to contact us.

Clay crucibles, also known as assay crucibles, are used for various laboratory metal sample analyses, melting materials, laboratory tests, and various industrial analyses, especially for fire assay analysis.

Qingdao TTWY Manufacturing Co.,Ltd is a company specialized in producing casting/melting products, such as many different types of crucible (ceramic crucible, quartz crucible, clay crucible, graphite crucible). It is located in Qingdao, a beautiful harbor city, which is convenient in transportation.

With high quality, reasonable price and attentive service the products produced by TTWY have won trust from clients at home and aboard.

Q: What information should I let you know if I want to get a quotation?A: The required material dimension (Thickness*Width*Length,diameter*length; if possible, please kindly provide us drawings). If it is possible, please also provide the application of products, then we will recommend the most suitable products with details for confirmation.Q: Can you guarantee the prompt delivery?A: Yes, when we get your inquiries, we will not only evaluate the more competitive price, but also we can get the most reasonable delivery time. So the prompt delivery can be guaranteed.Q: What is your lead time? A : Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock or customeriziation, it is according to quantity. Q : What is your payments terms ? A : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.(according to your order value)Can we visit your company?A: Yes, for sure. It's my pleasure. Q: What is the shipping cost?A: The shipping cost is determined by the destination port, weight, packing size, total CBM of the products, we will try the best to get the most reasonable shipping cost from the forwarders or express cou riers to help you save more money. Q:What is the transportation way ? A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc. If the Gross Weight between 45kg to 100kg, by express or by air to your nearest airport can be both considered. If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the nearest port.

Product Description

Chemical & Physical Analysis

MgO	89.04%
CaO	2.13%
SiO 2	2.31%
AlO	1.71%
FeO	0.72%
BaO 2	0.2%
NaO	0.2%
Other	3.69%

Product Parameters

Size	A(mm)	B(mm)	C(mm)	D(mm)	E(mm)	F(mm)
6A	40	30	26	6	31.2	11.8
7A	40	30	32	12	31.2	11.8
8A	45	37	35	13	38	13
9A	51	39	34	14	40	15

Application Industrial

Use and Storage Method

1. Inspect the crucible for defects such as cracks and sand holes, and confirm that its dimensions meet the requirements of the experiment and heating equipment.

2. Cleaning: Soak new crucibles in dilute hydrochloric acid, rinse with clean water, and then dry. For old crucibles, thoroughly remove any residual substances; this can be done by dissolving with chemical reagents or mechanically polishing.

3. Preheating: Before formal use, preheat in a muffle furnace at 100-200ºC, increasing the temperature to the experimental temperature at a rate of 1-2ºC per minute.

Storage Method:

Store in a dry, well-ventilated environment, avoiding direct contact with the ground (such as brick, soil, or cement floors).

It is recommended to place them on wooden racks or shelves, avoiding stacking and compression.

Use special tools when handling; do not roll them on the ground to prevent collision damage to the glaze.

Environmental Requirements: Keep the storage area clean and free of moisture condensation. Dehumidification equipment may be necessary.

Company Profile FAQ