Clay Graphite Crucibles

1. Long lifespan: Compact embryos are formed under high pressure, so their service life is three to five times longer than that of traditional clay crucibles.
2. Fast heat conduction: The embryo body's high density and low apparent porosity significantly enhance the crucible's heat conduction ability.
3. New materials: thermally conductive materials reduce the amount of sticky slag, and they provide high heat transfer, pollution-free products, and ensure efficient heat transfer.
4. Corrosion resistance: Compared to clay crucibles, it offers greater corrosion resistance.
5. Anti-oxidation: The embryo body is treated with advanced technology to make it more resistant to oxidation, which ensures its long-lasting thermal conductivity and long life.

[ Brief Introduction ]

The clay graphite products are made from clay grog, clay and graphite combined, which can be rolled into shapes and fired at around 1400 degrees Celsius. Graphite makes up 15-25% of the product. As with clay crucibles, this crucible has equivalent refractoriness, and its thermal shock resistance and chemical resistance (such as corrosion resistance of MnO and FeO) is significantly improved over clay crucibles.

Application: melting gold, silver, copper, aluminum, lead, zinc, and other nonferrous metals, as well as medium carbon steel and rare metals.

[ Physical and Chemical Indexes ]

Refractoriness ≥ 1635°C

Carbon Content ≥ 41.46%

Porosity ≤ 32%

Volume Density ≥ 1.71g/cm3

Sic Content ≥ 24%

[ Clay Graphite Crucible Manufacturing Process ]

Ingredients: raw materials are mixed in a mixer, then after 15 days are stored, they are rolled into a mud cake on a wet roller compactor
Formation: formation using the rotary embryo machine
Drying: small crucibles are dried for two days at 60-80 degrees, medium crucibles are dried for 3 days, and large crucibles are not less than 4 days
Firing: The crucible can be put into the kiln only when the moisture content is less than 2%, and it will be fired in about 130 hours

[ Technical Parameters ]

           
Specification

Up Outside Diameter - D

(mm)

Bottom Outside Diameter - d

(mm)

Overall Height - H

(mm)

1# 70 80 46
2# 87 107 60
3# 105 120 71
5# 118 145 83
8# 127 168 94
10# 137 180 100
12# 150 195 107
16# 160 205 111
20# 178 225 120
25# 196 250 128
30# 215 260 146
H30# 208 425 238
40# 230 285 165
50# 257 314 179
60# 270 327 186
70# 280 360 190
80# 296 356 189
D80# 260 320 153
100# 321 379 213
120# 345 388 229
150# 362 440 251
200# 400 510 284
250# 430 557 285
D250# 320 620 290
B300# 455 560 290
300# 455 600 290
350# 455 625 330
400# 526 661 318
500# 531 713 318
H500# 540 750 380
600# 580 610 380
750# 600 650 380
800# 610 700 400
1000# 620 800 400
1500# 780 890 460

Mark: Customized graphite crucibles and graphite special-shaped products can be produced according to customer requirements.

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