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All Listings > Chemicals, Minerals, Fertilizers and Plastics > General Chemicals > Silicon Carbide Abrasive - JIS Grade (300 MT)

Silicon Carbide Abrasive - JIS Grade (300 MT)

ID: 183011152
Quantity: 300 MT
Model: Model

New/Unused Surplus.

According to the seller, it is noticeable in one of the photos that the drum is “caved-in”.  This is called a “paneled drum”.  Since the slurry was made in PEG-400, the abrasive is still wet with the PEG.  The PEG was removed by MEMC before shipment of the caked JIS abrasive.  But, there still remains some small amount of PEG in the abrasive. Over long time periods, the PEG will work its way into the drum wall and SLIGHTLY soften the plastic.  When this happens, that part of the drum tends to “cave–in”.  This “panel” effect happens only to a small fraction of the drums, but it does happen.  But,  please understand, there is NO LOSS OF INTEGRITY TO THE DRUM, THE ABRASIVE, OR THE PEG.  This is a simple mechanical process that occurs in some plastic drums when any solvent is stored in the drum for a number of years. This happens only because plastic drums of PP (polypropylene) are NOT all manufactured the same.  In some drums, there are small areas where the drum wall is somewhat thinner than the rest of the drum.  So, that drum may be subject to the “panel effect”. They simply want you to know that some of the drums are “paneled” by the PEG-400.  The abrasive RETAINS FULL INTEGRITY with NO CONTAMINATION FROM THE DRUM. 

The photos of samples were taken of the high purity JIS Abrasive Cake Core plus the thin surface layer of contaminating Si solids (called kerf).  The surface kerf shown in the cut drum (i.e.;  MVC-005S / MVC-009S / MVC-011S), constitutes only a small level of the abrasive solids.  The rest of the solids below the Si kerf layer on the surface of the cut drum is a high-quality JIS - abrasive shown in MVC-001S and MVC-009S. Looking carefully at MVC-009S, you will see how the JIS abrasive core cake is greenish compared to the black/wet Si solids kerf.  That greenish color is a distinctly visual indicator of high purity JIS abrasive. It was also taken some particle size distribution curves (PDCs) from a variety of random drums.  

Two random drums from the abrasive inventory were sampled, and the PDC curves taken.  It took MANY random drums to obtain two drums for each JIS abrasive particle size PDC. Notice in each of the PDC sample curves attached above for JIS – 800 / JIS – 1200 / JIS – 1500, there are residual kerf solids in each drum. This will tend to lower the D – 50 value, but most D-50 values are within their normal ranges for each JIS particle size listed in the above table.

Also notice in the last “PDC” attachment above......JIS – 800 / 1200 / 1500 VIRGIN standards that there still is a small level to a moderate level of kerf for each JIS particle size.  Again, this will lower the D-50 value relative to its “theoretical”  value range that is listed in the table above.

Lastly, there are no other JIS particle sizes that have been found within the entire inventory.  The overwhelming preponderance of particles sizes for the entire inventory of ~1900 drums is the 3  JIS sizes listed here.

For “mesh size”, see attached conversion table for mesh vs. micron size.   Notice that the values in (  ) do not exist in reality, but are merely estimations that are included for reference.   See the attached Mesh vs. Micron  Table attached above for reference.

Being sold "AS IS, WHERE IS". Buyer is responsible for shipping and handling.

Loading Costs: The warehouse will load the buyer?s trucks. There may be a modest charge but they will keep it as low as possible.
# of Bids: 1 PLACE A BID
Original Wholesale Value: $1,350,000.00
Product Location: Missouri, United States
End Time: Bid As Soon As Possible
Time Remaining: Bid As Soon As Possible
Trader: Ana Santos   +1 832 384 9940ASK A QUESTION

Seller Description

This lot of Silicon Carbide Abrasive - JIS Grade is no longer needed for the company's own operation and is being sold as an asset liquidation for its owner.

  • Product: Silicon Carbide Abrasive (various grades)
  • Quantities: 300 MT approximately
  • Grade: JIS Grade (JIS-800, JIS-1200, and JIS-1500 - Green abrasive for trace metals). See attached TCLP Metals Analysis.
  • Specs (Particle Sizes):
    • Median particle size for JIS-800 is about 15 µm. 
    • Median particle size for JIS-1500 is about 8-9 µm.
  • Manufacturer: MEMC USA
  • Packaging: packed in nearly 2000 Polypropylene drums and some steel drums. 
    • 55-gallon P.P. drums (i.e.; more than 90% of the material)
    • 55-gallon steel drums (less than 10% of the material) = a total of about 1900 – 1950 drums
  • Description: Most or all are of very pure “JIS” grade, with a very small amount of Si contamination. The abrasive is a hard cake that contains about 10 % PG-400, but feels dry to the touch, and easily crumbles.  
  • Applications: In metallurgical and other industries

 Size Designation             D-50 Median Particle Size (um) – Theory / 0% Kerf Solids*                    MESH

1)      JIS – 800                                       13.0 – 16.0                                                                         ~(700 – 1000)

2)      JIS – 1200                                       8.7 – 9.7 è 10.0                                                                ~(1250 – 1300)                                

3)      JIS – 1500                                       7.5 – 8.7                                                                           ~(1400 – 1700)

*D-50 size range is dependent on several factors including Laser analyzer used; sample preparation;  level of kerf solids in abrasive; etc.   Even “virgin” JIS particle size standards will vary in their “particle distribution curves (PDC) depending on the manufacturer and the variables listed here.   For abrasive PDC with increasing levels of kerf solids, the D – 50 value will trend lower than “Theory”.

Seller Terms

  • Salvex and the seller have the right to reject any and all offers.
  • This product is sold AS IS, WHERE IS.
  • Buyer is responsible for all taxes, duties, loading and freight charges.
  • Seller does not offer any warranties or manufacturer warranties.
  • Upon receipt of cleared funds, Seller will provide the Buyer a Release Order for item pick up. Title transfers from Seller to Buyer upon issuance of the Release Order.
  • It is Buyer's responsibility to verify quantities and condition at the time of pick up. Once the product has been removed from Seller's location, there will be no adjustments based on quantity or condition.

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