Use of Waste Saw Dust

Like hardboard, chipboard, flakeboard and MDF?

Thanks for your response. (Mr PWSlack)

The types you indicate generally use : hydraulic pressure, solvents and or glues . In the main they use : chips or pieces of the timber that are mechanically created by: cutters,grinders , shavers or rotating blades. Most of these products use considerable energy and are, as well , quite capital hungry

The product I am referring to uses simple sawdust which is bonded by a special mixture of cement. When dry and after curing, the result gives back : a water resistant and attractive finish .The texture, nailability and/ or screwability that is produced is as good as original/natural timber.

Though patented in a majority of Countries I am endeavouring to find out if there are similar products in the market place and in particular in Countries that produce a lot of soft woods like : Canada, North USA , the Nordic Countries etc. and where, sawdust should be pleantifull ( if not recycled for other purposes)

Hope there are persons among you who may help.Tks.

Labor Omnia Vincit.

>The product I am referring to uses simple sawdust which is bonded
>by a special mixture of cement. When dry and after curing,
>the result gives back : a water resistant and attractive finish.
>The texture, nailability and/ or screwability that is produced is
>as good as original/natural timber.

and......how do you want to complete the above process without using energy? The method you want to adopt includes all those energy intensive steps like 1)Mixing 2)Kneading 3) Pressing 4) Curing 5) Cutting etc.

Dear Sir,

It is common knowledge that the contained energy (some people call it differently) which has been used for the manufacturing and heating of clay bricks for a normal brick home is equal or greater than the sum of energy to heat that same house for ten years of winter in northern hemisphere.

So we are all looking for lesser demands of energy. It is almost impossible for the production of reasonable quality building material with some degree of esthetic appeal to be created without energy (coal, electrical or mechanical).

Here we are talking of a product that exists and which has demonstrated its re-use of an otherwise wasted by- product of saw-mills (except when it is used in boilers to make steam). The main theme of my question is to know whether it exists already anywhere (besides the Country wherein it has been invented and put on the market. Thank you for your informed response

Labor Omnia Vincit.

Hello Guest,

Having some experience with wood products, such as MDF. one thing is the type of adhesives used can have fumes that effect health in enclosed areas. such as formaldehyde,

As for as properties, the density of particle board such as MDF is not consistence through out, and be quite noticeable.

Such as the outer edges are compressed and take a screw very well, but the inner core are loosely bonded that when the outer edges are damaged, machined, removed. the integrity of "board" is or can be compromised.

With that statement I just given, can you explain farther your statement of;

"The texture, nailability and/ or screwability that is produced is as good as original/natural timber. "

particularly comparing it to "original/natural timber. "

phoenix911

Dear Phoenix 911,

Tks for your message. I appreciate your comments re MDF and I agree with same. Because I am under confidentiality constraints I am not able to fully describe the technique other than to say as I did earlier , that it has most if not all the characteristics of natural timber. Here I do qualify this statement by indicating that you can not, obviously, use a plane thereon.

The cement based binder does not ressemble some of the European or Canadian methods, which in most cases use material which is akin to these which are produced by the present portable machinery that create mulch rather than sawdust. The finished product being referred to is, with its other additives : pure saw dust based. The end products are : blocks and or panels of various sizes for construction that have been rated very highly by Official test laboratories.

At present I have commenced searches with USA Government timber Research Laboratory which I am hoping will throw some light on what may or may not exists in Northern America. Once this has been received I will definitely post it on this thread.

My thanks to the Contributor offering banana skins. In certain Countries I have seen these fed to animals , if the Contributor has a lot at his disposal he might try that disposal avenue.

Labor Omnia Vincit.

My wife has a horse, so there is no question of what to do with the saw dust. In fact getting enough saw dust can be a problem. I was asked just a couple of days ago to design an inexpensive machine for horse owners so they can make their own saw dust or fine shavings from available wood so they don't have to buy shavings or saw dust. When we had 4 horses on our property we used as much as a pickup truck load per week which usually cost $10.00 per load because we have a pallet manufacturing company just down the road. If you have to buy it from a feed store it costs much more.

Now if you can find a convinient use for a mixture of horse droppings mixed with urine saturated saw dust you will have made a great acomplishment.

Thank you for your contribution. If you are or were paying $40 per week , may I ask what was the cost and method of disposing of the contaminated material ?

It is possible that my Friends and perhaps myself may give you answer worth considering and which may satisfy your Wife in retaining four instead of one horse. Also how much saw dust does your pallet manufacturer produces per month/year, we might sell him a franchise.Rgds.

Labor Omnia Vincit

Actually the cost is about $5 to $10 per week when purchased from the pallet company. They dump it in a big open shed and the locals come by and shovel it into ther pick up trucks then pay their $10 at the office when they are done. There is never a surplus. This is why I was asked to design an economical machine that people could use at home to make their own. Where I live there is more than enough wood. There is a lumber industry here, and many people heat their homes with wood, and still there is plenty of wood. If you have a market for just saw dust maybe we cold develop something.

Getting rid of the wast is not really a problem. We have a manure spreader which is towed behind a tractor and we use it to fertilize the hay fields

"The product I am referring to uses simple sawdust which is bonded by a special mixture of cement. When dry and after curing, the result gives back : a water resistant and attractive finish .The texture, nailability and/ or screwability that is produced is as good as original/natural timber. "

I dont know about you guys but I mix sawdust and glue all the time. It makes a dandy filler material in woodworking.

All you need is to dry and then burn it for heat or ??? A storage hopper with a fan blowing through to dry. Horse apples burn just fine.

Archer's Arrows

Never tried it myself but this guy has .......here.

cr3

P.S. When I was about 8 in 1942, we lived in Eugene Or. It was my job to fill the hopper of the saw dust, Central heating system of our house. It had an auger at the bottom that feed the saw dust into the fire pot. Totally automatic, but for filling the hopper once a day from a room full, like a coal bin.

Archer's Arrows

Thank you all for very informative responses and the fascinating stories of :Pycrete et al.

Yes living in remote areas wherein no domestic refrigeration appliances existed in my youth , blocks of ice made in a municipal ice factory were carried home and my job was to heap saw dust thereon. This was to isolate the ice from external temperatures and by this simple but effective method keep it from melting. All I can remember is that it worked .

I am still looking for possible answers on presently existing production of building materials (blocks or panels) fabricated with low investment machinery and reduced costs,and made into durable saw dust based end-products. Do these exist anywhere besides that of my Inventor Friend ? Thank you all for litterally lighting the way forward.

Labor Omnia Vincit

>I am still looking for possible answers on presently existing production
>of building materials

Such products are already available, both Polymer impregnated as well as cemented.
All you have to do is 'wood polymer composite' and 'wood cement composite' keywords entered into Google.

If you go to Homedepot in the Decking aisle, you will find such products made for outdoor use.

I have studied this extensively during 2004-2005 and I have narrowed down 4 patents that are extremely important for recycling wood waste into durable materials, as a feasibility study to produce such products in resource constrained countries like India.

I can quote such patent numbers for those who have a reason to read them.

Mr Seskanuri.

Thank you for the very informative response. I do not live in the US and therefore do not have access to the products you indicate but will immediately investigate the webb as kindly suggested.

Regarding the patents if you are able to quote these I will study them and compare same to the one issued to my Friend which definitely, I suspect, would cover the USA .

If you are interested ( after my verification ) I would be delighted to work with you. I do not know the production possibilities of India but Countries such as :

Thailand,Viet-Nam, China , Philippines, Indonesia, Burma, could be quite high. (I am not including the Northern hemisphere where a lot of soft wood is milled)

The holder of the patent I refer to also has researched and produced building material using :rice and other cereals husks which as you know are in plentifull supply in most of the above countries.

We may perhap deal "off-air" at your convenience.

Labor Omnia Vincit

Sir,

Forgive the many light hearted response offered. It is most obvious that you are asking a serious question, to which you wish a serious response. Do not be discouraged by the levity and sideways responses. As this site offers a host of opportunities for the truly remarkable exchange of ideas and info, it also is a great opportunity to blow off a little steam amidst or after a full day of work.

Cheers,

cr3

Thank you CR 3.

You are right I am trying to find a serious answer. Though some comments are flippant, I do not mind.( My motto says it all ! )

I thoroughly agree that this method of discussing serious issues is of tremendous benefit for, I believe, all of us.

Regards,

Labor Omnia Vincit

Seems to me the problem is what you use as a binding agent.

The question then follows... what raw materials are cheap and realliy available where you are?

Adhesives/chemistry isn't my field, but natural rubbers ,saps, resins are surely the place to look? Or waste plastic? Shred waste plastic, add sawdust mix with ... I dunno what.. milk?.... see what happens... Delcrete!

At an MDF Board Factory I am briquetting them with Bagasse waste as fuel for the Boiler. The Saving Vs Furnace Oil as supplementary fuel not used is 75%-80%.

If I run out of bagasse, I can brequett them with any agro waste. This is green energy too.

I do appreciate all of your comments . (even though not answering each and every one )Thank you all the same.

Any indication of issued patent numbers on this subject would definitely be of help. Tks.

You are right in using it as a fuel replacement. FYI I have seen it used mixed with fuel at the end of the burner nozzle for heating of horizontal cement kiln driers.It works.

In many places such as North Viet-Nam (Campha and Hong-Hai) where , I have seen, the inhabitants ( similarly in China as well ) collect from the near- by coal washeries, the " coal fines" . These are then turned into briquettes for home cooking or heating. Though I have never tried it ( but for our Friend with plans for : India ) this is also a worthwhile test (possibly even with larger than saw dust particles).

Many thanks for the support.

Labor Omnia Vincit.

Try Radhe Engineering India, they make the plants apart from selling briquettes.

Other than Radhe, India is a big market for these type of products/reusable fuel and a lot of manufacturers are in it.

Do you have a webbsite ? I tried a combination of the names indicated without hitting "pay-dirt". If available kindly submit.

Thanks for the " pointer".

Labor Omnia Vincit

E-MAIL
info@radhegroup.com
radheengineering@radhegroup.com
rreda@radhegroup.com

WEB: www.radhegroup.com

Thank you , very much , for informative process and immediate information . Whilst my primary aim is to find additional ways of using the saw dust in construction activities (see earlier memos) the information you have supplied is likely to be highly usefull in the search for the transformation of waste coconut husks(fiber ) in the South West Pacific. I will separately keep you informed of any results.

Best Regards,

Labor Omnia Vincit.

The whole WORLD is looking at waste sawdust and other clean Biomass.It's a great "smokeless",business to be involved with.John Olsen Cree Industries. CANADA

Dear Sir,

I would appreciate further details on the products or techniques which are used and commercialised by the Company you have indicated and /or may be working for. Thank you,

Best Regards,

Labor Omnia Vincit

Gubbay - You are back again. I thought you were more interested in power from the Ocean.

How are you getting along.

to Labor Omnia Vincit, www.demecosl.com

Here is our machine manufactured in Sri Lanka, for Worldwide distribution.They are screw presses, utilizing extrusion and heat to melt the lignin in the sawdust, no binders or additives are used.John O