Refractory Crucibles Sic Crucible For Melting Copper

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Quick Details for Refractory Crucibles Sic Crucible For Melting Copper/Brass/Aluminum


High Strength, graphite crucible crucible


melting metal


as your requirements


High Pure

Top Diameter:


Bottom Diameter:


Place of Origin:

 China (Mainland)

Brand Name:

Model Number:


Black grey







Apparent porosity:




Bulk Density:


Using life:

>5000 hours

MAX temperature:


Packaging & Delivery

Packaging Details: Seaworty packing or as per customer's detail requirement of graphite crucible.
Delivery Detail: within 20-30 days after confirm order of graphite cru

Refractory Crucibles Sic Crucible For Melting Copper/Brass/Aluminum                       

Product Description


Specifications for Graphite Silicon Carbide Crucible For Aluminum Melting :

1.Long working lifetime: its working lifetime is increased 3-5 times over normal clay-crucible due to the compact body formed under high pressure.

2.High thermal conductivity: high-density body and low apparent porosity greatly improve its heat conductivity.

3.New-style materials: new heat conduction material ensures faster heat conductivity and pollution-free product, reduces adherent slag.

4.Resistance to corrosion:better anti-corrosion than normal clay-crucible.


Refractory Crucibles Sic Crucible For Melting Copper/Brass/Aluminum

Physicochemical Properties


Type of Crucible

Type S

Type D

Carbon   Content/%



Bulk   Density/(g/cm3)



Apparent Porosity/%



Compression   Strength/MPa






Type S: Clay graphite crucible

Type D: Isostatic pressing graphite crucible

 Cited from CNS China National Standard of Graphite Crucible, which is solely drifted by TIANFU company.  

Content Composition











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Sure, we may consider discounts for bulk order of products.

3.How long will it take to complete my order?

For the stock items, we can arrange the shippment within 2~3days after received your payment. For the customized items, we will indicate the delivery time in the quotation list.

4.Can you give warranty of your products?

Yes, we extend a 100% satifisfaction guarantee on all items. Please feel free to provide timely feedback if you're not satisfied with N&D's Quality and Service. For the overseas orders, if there is a quality problem, please kindly to provide the picturers to show the problem by e-mail. We will provide the replacements to you at our cost according to actual conditions.

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Q:When decomposing iron ore, why should it be carried out at low temperature?
The commonly used acid decomposition method is as follows:(1) hydrochloric acid decomposition of iron ore can generally be heated by hydrochloric acid decomposition, iron silicate soluble in hydrochloric acid, can add a little hydrofluoric acid or ammonium fluoride, the sample is completely decomposed. The dissolution rate of magnetite is very slow, add a few drops of stannous chloride solution, the decomposition speed is.(2) sulfuric acid hydrofluoric acid decomposition sample, in the platinum crucible and the plastic crucible, adds 1:1 sulfuric acid 10 drops, hydrofluoric acid 4-5ml, the low temperature heats up, when will emit three oxidation two sulfur white smoke, extracts with hydrochloric acid.(3) when sulfuric acid or sulfur phosphorus mixed acid (1:2) dissolves, the ore needs to be heated until the water is completely evaporated, and the white smoke of three sulfur trioxide is added, and then heated for several minutes. But the heating time should not be too long to prevent the formation of pyrophosphate.
Q:How much temperature does a graphite crucible hold?
Attention to the use of graphite crucibles1, the pot stored in ventilated and dry environment, so as not to affect the use of damp.2, the crucible should be handled gently in the handling, do not fall shock, do not roll, so as not to damage the protective layer of the crucible surface.3, before use to bake the crucible in advance, baking temperature from low to high temperature and slowly, turning the crucible, let the heat evenly, excluding crucible body water, preheating temperature gradually rose to 500 degrees Celsius (such as preheating caused by improper crucible spalling, cracking, not a quality problem will not be returned)4, crucible furnace and crucible to complete, up and down the gap around to meet the requirements, not the pressure in the crucible furnace cover body.5, use should avoid direct flame spraying crucible body, should be sprayed to the crucible base.6, when feeding should be added slowly, it is best to scrap, aniseed don't put too much, too tight, so as not to split up the crucible.7. The crucible tongs used for loading and discharging should be in conformity with the appearance of the crucible, so as not to block the crucible.8, the crucible is best for continuous use, so as to better play its high performance.9, the amount of additive should be added in the smelting process, and excessive use will reduce the service life of the crucible.10. When using the crucible, rotate the crucible periodically so that it can be heated evenly and extended.11, remove the crucible inside and outside the wall of slag and coke should be tapped to avoid damage to the crucible.
Q:Cast iron into a casting. What is the state of the matter, change, sublimation?
In metallurgy, casting, machinery, chemical and other industrial sectors, it is widely used in smelting of alloy tool steel and smelting of nonferrous metals and their alloys. And has better technical and economic results.
Q:Is graphite crucible resistant to hydrofluoric acid?
Mainly depends on the use of working conditions, the use of air, then more than 600 degrees Celsius will begin to be oxidized, and the service life will not be long.
Q:Why does China choose quartz crucible directly in the aspect of Czochralski silicon?
The oxygen in the quartz crucible can not be avoided, and other methods can be adopted to reduce oxygen.
Q:How to extract pure silver from sundry Silver
Remove iron: will displace the silver on the wok fried, the best fried silver to brown, reddish, and lumpy or granular. After cooling, with a magnet (magnet) to absorb with iron.
Q:Why is graphite crucible smelting reducing properties of the burden is particularly vulnerable to corrosion?
Corrosion, the nature of the general graphite is extremely stable, it is difficult to corrosion, but some special organic substances, such as resin at low temperatures, will be able to graphite erosion, making the graphite due to mechanical strength and damage. And some oxygenated compounds, too.
Q:Graphite and diamond are elemental elements made of carbon. Why are physical properties so different?
Similarities and differences between diamond and graphite:graphiteGraphite and diamond are pure carbon, chemical formula of the two is C, a covalent bond, the molecular structure of graphite, their chemical properties are basically the same. But the diamond and graphite are not homogeneous material, they are allotropic body is composed of the same elements of carbon. Mainly because of their spatial structure is different, each atom between the graphite elemental form a planar structure, hexagonal flaky, a molecular bond between layer and layer, layer between sliding easily, so graphite is soft, dark gray, metallic luster, touch a greasy feeling and have a dark grey traces. Because the hexagonal structure is stable, so high temperature graphite, graphite can do high temperature lubricant. Therefore graphite has properties of high temperature resistance, good electrical conductivity, thermal conductivity, lubrication, plasticity and chemical stability.
Q:What is the main function of graphite?
As refractory material: graphite and its products have the properties of high temperature resistance and high strength. They are mainly used in the metallurgical industry to make graphite crucibles. In the process of steelmaking, graphite is often used as a protective agent for steel ingots and lining of metallurgical furnaces.
Q:Disadvantages of graphite crucibles
The graphite crucible is much better than the traditional crucible, to say the disadvantage is that the technical requirements are very high, and the life of the imported crucible and the domestic crucible is about 3:1.

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