Products Information

  • Fire Assay step
    Post time: 11-09-2020

    Main steps   ①Sampling, samples include minerals, refined products, debris, etc., requiring careful collection of representative samples. Because precious metals often exist in minerals in a random dispersion state, it is often necessary to use a large amount of minerals to take out a representa...Read more »

  • Crucible furnace for refining gold
    Post time: 11-04-2020

    Crucible furnace gold alchemy is carried out in the crucible furnace. The crucible furnace is built with ordinary clay refractory bricks, with a cone shape, the upper part is smaller in diameter than the bottom, the bottom of the furnace is laid with 2 to 3 layers of refractory bricks in staggere...Read more »

  • The classification of crucibles and the usage of each crucible
    Post time: 10-27-2020

    The crucible is made of crystalline bai-shaped natural graphite as the main raw material, du plastic refractory clay as the binder, and is made by combining it with different types of clinker. It is mainly used for smelting special alloy steel, melting non-ferrous metals and Alloy refractory gra...Read more »

  • Precautions before using graphite crucible
    Post time: 10-24-2020

    1. Handling Special handling tools must be used to carry the crucible, and the crucible cannot be rolled directly on the ground. Avoid collisions during transportation, so as not to damage the glaze layer, thereby affecting the service life of the crucible. 2. storage The crucible must be stor...Read more »

  • Graphite crucible shield
    Post time: 08-19-2020

    Graphite crucible has good thermal conductivity, high temperature resistance and corrosion resistance, can cope with rapid cooling and rapid heating, disadvantage is easy oxidation at 600 degrees.So need to add a protective shield on its outside. We supply all differenct size Graphite crucible sh...Read more »

  • Fused silica casting crucibles
    Post time: 08-13-2020

    Casting crucibles using fused silica as main material,mainly used for precious metal melting such as platinum,gold and other high temperature alloy casting .The products are featured with high purity and corrosion resistance,low thermal conductivity,small expansion coefficient,high  Tempe...Read more »

  • High pure graphite crucibles
    Post time: 08-08-2020

    High pure graphite crucibles Mainly used in jewelry industry for precious metals smelting, Using high purity ,high strength,high density graphite as raw material,  extremely low ash content  to ensure that the precious metals in the smelting is not contaminated. Graphite crucible has g...Read more »

  • What are fire assay crucibles?
    Post time: 07-30-2020

    This regular simple looking ceramic (we call them pots) made of fire clay and proprietary additives, has an extremely long history in the gold business . Its use is referenced in historical texts that are more than 3000 years old, which you think about it, this is a simple ceramic cup ,A cru...Read more »

  • Silicon Carbide (SiC) Crucibles
    Post time: 07-25-2020

    Desctiption:Graphite crucible has good thermal conductivity and high temperature resistance.During the procssof high temperature using, the coefficient of thermal expansion is small,it has a certain ability of resist strain to the rapid cooling and rapid heat. It has strong corrosion resistance t...Read more »

  • Fire assay crucible
    Post time: 07-22-2020

    Fire assay it's a classical analytical method for applying metallurgical principles and techniques to analytical chemistry. To test the content of precious metals in minerals and metal products determined by melting and roasting. The method has the advantages of sampl...Read more »

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