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- Walnut Shell Media / Walnut Shell Grain Synonyms:
walnut shell abrasives, english walnut shell, american black walnut shell, walnut shell media, MIL-G-5634C, type 3, crushed walnut shells, ground walnut shell, walnut shell grain, walnut shell powder, finely ground walnut shell, walnut shell flour, walnut shell carrier, walnut shell filter media, walnut shell abrasives, organic abrasives, shell media, blasting, grit, jet blast, deburring, polishing, AA-1722 type 2,
- Walnut Shell Media / Walnut Shell Grain Designations:
Chemical Name: Walnut shell
- Walnut Shell Media / Walnut Shell Grain Description:
a) Walnut Shell abrasive is a hard and fibrous product made from crushed walnut shell. It is the most common type of soft abrasive for industrial use.
b) Walnut shell products are bio-degradable, non-toxic, and environmentally safe.
c) Walnut shells were originally developed for cleaning gasoline and diesel engines due to its lack of silicon and toughness. It will clean metals, alloys and plastics without scratching or pitting the surface.
d) Walnut shell abrasives are specially manufactured to eliminate mineral contamination and/or metal contamination.
- Walnut Shell Media / Walnut Shell Grain Typical Chemical Properties Available:
a) Protein factor: ~ 5.30 x g of nitrogen = protein content
b) Phytate content: ~ 760 mg/100 g
c) Water activity: ~ aw = .64 at 4% moisture and 21 deg. C
d) Free fatty acids: ~ 20 mg/100 g of fresh kernels
e) Nitrogen - 0.10
f) Cellulose - 40/60
g) Lignin - 20/30
h) Toluene Solubility - 0.5/1.0
i) Methoxyl - 6.5
j) Chlorine - 0.10
k) Ash - 1.5
l) Cutin - 1.0
- Walnut Shell Media / Walnut Shell Grain Physical Grades Available:
a) READE offers over 30 grades of processed angular shape walnut shell to USS Sieve sizes.
b) Two separate milling processes are used to manufacture our fine grades.
c) One mill produces sharp, angular, multi-faceted particles, the other produces round particles.
d) Sizes 35/60 and 40/60 can be produced with either shape. Sizes 40/100 through 60/200 are standard in only the round shape.
e) Coarse Mesh Grades: 4/12, 6/10, and 8/12
f) Medium Mesh Grades: 10/20, 12/20, and 14/30 (coarse)
g) Fine Mesh Grades: 35/60, 40/60, 40/100, 60/100, 60/200
h) Military Specification: MIL-G-5634C, Type 3
i) GSA Specification: AA-1722, Type 2
- Walnut Shell Media Shapes Available:
a) Angular shape media: Always in stock in the USA. Angular cuts better in a blast operation
b) Rounded shape media: Always in stock here in the USA sized 14 x 30 mesh
c) Rounded shape media: Available in these sizes from Mainland China: 2.36--3.35mm; 2--2.36mm; 1.6--2mm 1.2--1.6mm; and 0.8--1.25mm. The minimum order is one metric ton
Walnut Shell Media / Walnut Shell Grain Physical Types Available:
Walnut shell media, crushed walnut shells, walnut shell flour, walnut shell carrier, walnut shell filter media, walnut shell grain, walnut shell powder
- Walnut Shell Media / Walnut Shell Grain Nominal Physical Constants:
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Dry Packing Density (lbs. / cu. ft.)
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22 to 74
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Solubility In Water
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insoluble
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Flash Point (Deg. F) (closed cup)
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380
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Color
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American= Light Brown
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pH Value At 25°C (in water)
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~ 5.4
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Free Moisture (80°C for 15 hrs)
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3 to 9%
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Mohs Hardness @20°C (Dry)
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~ 3 to 4
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Specific Gravity (g/cc) to water
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1.2 to 1.4
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Bulk Modulus (PSI)
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21,000+ to 29,000+
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Modulus Elasticity (p.s.i.)
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170,000
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- Walnut Shell Media / Walnut Shell Grain Typical Applications:
a) Nut plug, Cellulosic fiber, Filter media, Blasting (typical substrates are metals, fiberglass, woods, plastics and stone), Jet blast, Deburring, Dermabrasion, Polishing (used for polishing or cleaning fine metals, alloys, mechanical parts, shell cartridges, eye glass lens, rocks, stones, coral, ivory, beans, and seeds), Cosmetics (used as an exfoliate in facial, body and foot scrubs), Fillers & Extenders (paint and coating materials, resins, pigments, plywood, adhesives, ceramics, dynamite, tile and livestock feed), Biodegradable bedding for birds, reptiles and small animals, Carriers, Oil industry,
b) Blast cleaning with walnut shell abrasives are now commonly used to remove everything from paint, rust, chemical and carbon deposits, to lacquer and scale. One of the most popular use is the deflashing of molded plastic parts.
- Walnut Shell Media / Walnut Shell Grain Typical End-use Industries:
Construction, resin, plywood, laminated veneer lumber, furniture, rubber, paint, cosmetic uses, fillers, extenders and oil drilling industries
- Walnut Shell Media / Walnut Shell Grain Packaging:
a) The standard shell packaging is bagged in 50 pound 3 ply paper bags. Forty bags are normally stacked on a 40" x 48" four way hardwood pallet. Other packaging options include 250-pound fiber drum, 1,000-pound box, and 2,000-pound mini-bulk bag.
b) For further information on custom packaging options Contact READE.
- Walnut Shell Media / Walnut Shell Grain TSCA (SARA Title III) Status:
a) Not not reportable under SARA 313.
b) For further information please call the E.P.A. at +1.202.554.1404
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