jueves, 28 de febrero de 2013

WALNUT SHELLS IN INDUSTRY

Walnut shells are used in many polishing and/or deburring applications. Walnut shell media is used for polishing or cleaning fine metals, alloys, mechanical parts, shell cartridges, eye glass lens, rocks, stones, coral, ivory, beans, and seeds.
Jewelers use walnut shell media treated with rouge in both tumbling and vibratory applications for polishing gems and fine jewelry.
When polishing the media size should be small enough to freely pass through openings or large enough to avoid lodging in openings or crevices.
Ground walnuts shells are a type of abrasive blast media used for cleaning. Typical substrates are metals, fiberglass, woods, plastics and stone. The walnut shells are ground to various sizes from coarse to extra fine depending on the application. The walnut shells are used in the same manner as typical blast media. Walnut shells are durable and can be re-used in many applications. Walnut shells can remove matter from surfaces without scratching or pitting underlying material.
Walnut shell is used in many applications as a filler or extender. Paint and coating materials, resins, pigments, plywood, adhesives, ceramics, dynamite, tile and livestock feed just to name a few. Media sizes vary from coarse walnut shell to walnut shell flour.
Walnut shell is used as lost circulation material to combat typical operational problems associated with drilling mud losses. Walnut shell is an easy and efficient solution to lost circulation problems. Walnut shell does not significantly change mud properties and can be removed and perhaps recycled with ease. Walnut shell is available in coarse, medium and fin grit sizes.
 
Walnut shell is biodegradable, non-toxic, environmentally safe and cost effective for blasting. Walnut shell does not cause silicosis.
The cosmetic industry uses walnut shell media as an exfoliate in facial, body and foot scrubs. Walnut shell is used by many, from the novice soap maker to the commercially distributed cosmetic lines. Eco-Shell will aid in formulating the custom grit sizes desired.
Walnut shell is used in many applications as a filler or extender. Paint and coating materials, resins, pigments, plywood, adhesives, ceramics, dynamite, tile and livestock feed just to name a few. Media sizes vary from coarse walnut shell to walnut shell flour.
Safety/Environmentally Sound
◊ Non-toxic and biodegradable
◊ Requires no flammable solvents
◊ Dust free
◊ Natural product
◊ Use required on most U.S. Government contracts
◊ Found not to cause Silicosis (can occur from use of sand or silica products)

Cost Effective
◊ Cleans without leaving scratches or pitting
◊ Cleaned parts require no additional machining or fitting
◊ Cleans precision parts without a change in dimensions
◊ Non-corrosive
◊ Lightweight
◊ Pollution prevention

Fast
◊ Surface areas require no drying time
◊ Easy to use
◊ Fast clean up after use
◊ Easy disposal process

Elasticity and Durability
◊ Resistant to rupture and deformation
◊ Limited breakdown
◊ Can be re-used in various applications
 
Inventoried Media Sizes
4/6 12/20 20/40 60/100 -100
6/10 14/30 35/60 60/200 -200
8/12 18/40 40/60 60/200-10.5 -325
4/20 20/30 40/100 70/200
Custom sizes available upon request. Please contact our sales staff at info@ecoshell.com.
Eco-Shell, Inc.

Publicado por EMILIO MALAGUTI en 12:07

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GREEN CHEMICALS

The Green Seal certification is granted by the organization with that name and has a great number of members contributing with the requirements to pass a raw material or a chemical product as "green". Generally for a material to be green, has to comply with a series of characteristics like: near neutral pH, low volatility, non combustible, non toxic to aquatic life, be biodegradable as measured by oxygen demand in accordance with the OECD definition.
Also the materials have to meet with toxicity and health requirements regarding inhalation, dermal and eye contact. There is also a specific list of materials that are prohibited or restricted from formulations, like ozone-depleting compounds and alkylphenol ethoxylates amongst others. Please go to http://www.greenseal.com/ for complete information on their requirements.
For information on current issues regarding green chemicals, see the blog from the Journalist Doris De Guzman, in the ICIS at: http://www.icis.com/blogs/green-chemicals/.
Certification is an important — and confusing — aspect of green cleaning. Third-party certification is available for products that meet standards set by Green Seal, EcoLogo, Energy Star, the Carpet & Rug Institute and others.
Manufacturers can also hire independent labs to determine whether a product is environmentally preferable and then place the manufacturer’s own eco-logo on the product; this is called self-certification. Finally, some manufacturers label a product with words like “sustainable,” “green,” or “earth friendly” without any third-party verification.
“The fact that there is not a single authoritative standard to go by adds to the confusion,” says Steven L. Mack M.Ed., director of buildings and grounds service for Ohio University, Athens, Ohio.
In www.happi.com of June 2008 edition, there is a report of Natural formulating markets that also emphasises the fact that registration of "green formulas" is very confused at present, due to lack of direction and unification of criteria and that some governmental instittion (in my opinion the EPA) should take part in this very important issue.