Key Advantages

  • Durable and reusable 5 to 9+ times.
  • Withstands severe thermal shock up to 1650℃.
  • Endures extremely corrosive fire assay environments.
  • Ensures consistent crucible size.
  • Provides excellent heat conduction.
  • Non-reactive material ensures the purity of your molten samples.
  • Full-process control ensures quality, cost, and timely delivery.

Clay Crucible

DECENT Clay Crucibles are meticulously designed to meet the rigorous demands of modern fire assay and high-temperature metallurgical operations. Ideal for holding and melting crushed mineral samples and various metal alloys, these crucibles perform flawlessly in fire assay furnaces.

The secret to their superior performance lies in a unique, scientifically formulated blend of fire clay, featuring low caustic soda, low iron content, and high silicon content. This advanced composition, combined with a proprietary curing and pressing process, results in crucibles with extraordinary mechanical strength and the ability to withstand severe thermal shock up to 1650℃. They are specifically built to endure extremely corrosive fire assay environments and significant temperature fluctuations over multiple uses.

Ingredients and Percentage

Silica(SiO₂) 60%~65%
Calcium Oxide <0.6%
Aluminum Oxide 30%~34%
Ferric Oxide <2%
Titanium Oxide <2%
Sodium Oxide <0.1%
Potassium Oxide <0.2%

Drawing on over 3000 years of history in the gold refining industry, our clay crucibles continue this legacy by delivering high-temperature resistance, excellent heat conduction, and impressive reusability. Users can typically expect 5 reuses, with some instances demonstrating reusability up to 9 times or more, significantly enhancing operational efficiency and cost-effectiveness.

Manufactured using the latest automated technology, we ensure consistent crucible size and quality across an annual production capacity of 6.5 million pieces. Our commitment to quality is further reinforced by stringent testing protocols, including visual and physical inspections for consistency and durability, and rigorous usage tests that simulate fire assay processes to guarantee no lead sputtering or structural damage after repeated firings.

Available in standard specifications ranging from 30g to 65g, with customization options to meet your precise needs, our Clay Crucibles are securely packed in wooden boxes or cartons on pallets for safe transport.

Equipment Construction

  • Material Composition: Crafted from a specialized fire clay formula with low caustic soda, low iron content, and high silicon content.
  • Manufacturing Process: Processed using an advanced curing and pressing method with automated technology.
  • Body Characteristics: Features a dense, high-strength body.
  • Structural Integrity: Ensures consistent crucible size and robust structural integrity.
  • Performance: Capable of withstanding extreme thermal and chemical stresses in high-temperature applications.

Technical Parameters

Model No. Top OD (mm) Base OD (mm) Height (mm) Pcs/Crate Crate /20′ Container
DCC20 76 46 98 3000 20
DCC30 85 56 105 2574 20
DCC40 90 56 135 2000 20
DCC50 105 56 150 1530 20
DCC55 90 56 155 1500 20
DCC65 105 56 165 1400 20
DCC75L 120 75 160 1000 20
DCC75S 110 60 200 840 20
DCC75I 125 61 210 672 20
AC1 105 56 130 880 20
AC2 110 70 130 880 20

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