new research debunks trad views on nutrition

[saysfaa]

...there wouldn't be any fat left by the time it met any clay.

There doesn't have to be any fat left by the time it met any clay in order for the ash of fat (edit to add: or other facets of using fat) to give different properties to ceramic and so be used in the production of ceramic.

There isn't any bone left by the time it meets any clay in the making of bone china. It is ash of bone by that time. It is still a use of bones.

 

[saysfaa]

This source explains a use of fat in the production of ceramics.

The condensed version is "the by-product of glycerine, in producing lightweight structural bricks...up to 15 mass% glycerine have been fired at 1050 °C to produce pores...decreased bulk density..,Thermal conductivity of the mixture brick decreased by ...up to a 40% .. suitable as secondary raw materials in ceramic brick production....

The demand for energy efficient structures in building is very high in today's climate due to the current sustainability alert worldwide. The increase in popularity of using environmental-friendly, low-cost and lightweight construction materials in building industry...Thermal conductivity can be reduced by adding pore-forming agents, waste material to the bricks before firing...Another advantage of lightweight bricks is lower transportation costs. However, when thermal conductivity is reduced by increasing porosity in bricks, the mechanical strength is reduced by modifying its composition and microstructure...."

Again, the source is a study on the feasibility of this use rather than about production. It is a lot harder to find detailed info on newer production practices even if they are pretty widespread. Companies don't have much, if any, incentive to share such information with their competitors, for one thing. How widespread this use is must depend a lot on whether there is a higher value use of the fats.

Edit to add:
It is hard to know what is common knowledge, so in case these things aren't - glycerine is made from beef fat. It is also made from plants. And beef fat is used as biofuel in applications like this article talked about.

 

[Perris]

There doesn't have to be any fat left by the time it met any clay in order for the ash of fat (edit to add: or other facets of using fat) to give different properties to ceramic and so be used in the production of ceramic.

There isn't any bone left by the time it meets any clay in the making of bone china. It is ash of bone by that time. It is still a use of bones.

I don't think that's right. See e.g. Wikipedia entry on bone ash:

"In preparation for use in bone china, bones undergo multiple processing stages, including:

• Removal of any meat before being degreased.
• Calcination to around 1000 °C (1832 °F). This will remove all organic matter, and the bone is left sterilised.
• Being ground with water to fine particle size.
• Being partially dewatered.

Since the 1990s, the use of synthetic alternatives to bone ash, which are based on dicalcium phosphate and tricalcium phosphate, has increased. Significant amounts of bone china is produced using these synthetic alternatives rather than bone ash."

The degreasing should get rid of any fat before the bone is reduced to ash.

 

[Perris]

This source explains a use of fat in the production of ceramics.

The condensed version is "the by-product of glycerine, in producing lightweight structural bricks...up to 15 mass% glycerine have been fired at 1050 °C to produce pores...decreased bulk density..,Thermal conductivity of the mixture brick decreased by ...up to a 40% .. suitable as secondary raw materials in ceramic brick production....

The demand for energy efficient structures in building is very high in today's climate due to the current sustainability alert worldwide. The increase in popularity of using environmental-friendly, low-cost and lightweight construction materials in building industry...Thermal conductivity can be reduced by adding pore-forming agents, waste material to the bricks before firing...Another advantage of lightweight bricks is lower transportation costs. However, when thermal conductivity is reduced by increasing porosity in bricks, the mechanical strength is reduced by modifying its composition and microstructure...."

Again, the source is a study on the feasibility of this use rather than about production. It is a lot harder to find detailed info on newer production practices even if they are pretty widespread. Companies don't have much, if any, incentive to share such information with their competitors, for one thing. How widespread this use is must depend a lot on whether there is a higher value use of the fats.

I'll read it carefully later, for now I note from the intro
"
In the process of catalytic transesterification of glycerides, biodiesel is obtained and as byproduct glycerine. The market of the glycerine is limited (cosmetic and pharmaceutical markets), so when the biodiesel production capacity increased, the glycerine will end up being a relatively low value product, increasing the cost of biodiesel production. Moreover, before storing the biodiesel obtained is filtered. In the filtration step bentonites soaked in biodiesel at a concentration of about 20–50% are obtained as waste spent earth biodiesel filtration. Disposal of this waste is an important environmental and economical problem for the biodiesel industry.
One of the possible applications for these wastes is their use in the construction sector. Ceramic products may tolerate considerable amounts of different types of wastes, achieving their inertization and neutralization by encapsulating in the ceramic matrix [3], [4], [5]. "

Disposal of waste (and in particular bentonite, which is a sort of clay anyway) appear to be the driver of this innovative use, but the last sentence quoted is also a sign that this is about locking up some of the 'ingredients' rather than actively utilizing whatever they may bring to the chemical and mechanical party.

 

[RoyalChick]

Beef fat and bones has been an educational and enjoyable diversion. Here is my tax: Tassels who has gone broody already this season.

 

[Perris]

Beef fat and bones has been an educational and enjoyable diversion. Here is my tax: Tassels who has gone broody already this season.
View attachment 4077558

snap!

 

[saysfaa]

I don't think that's right. See e.g. Wikipedia entry on bone ash:

"In preparation for use in bone china, bones undergo multiple processing stages, including:
...

Bone china is one of many kinds of ceramic.

The list said ceramics. Not bone china.

Bone china is (arguably, perhaps these days) the finest of the fine as far as ceramics go. Of course it would require the most processing of ingredients. It uses the finest of clays too but less fine clay still makes acceptable crocks and pavers (both also ceramic).

 

[saysfaa]

I'll read it carefully later, for now ...

That it has other benefits doesn't negate the increased value it adds to the ceramics.

 

[Perris]

Bone china is one of many kinds of ceramic.

The list said ceramics. Not bone china.

Bone china is (arguably, perhaps these days) the finest of the fine as far as ceramics go. Of course it would require the most processing of ingredients. It uses the finest of clays too but less fine clay still makes acceptable crocks and pavers (both also ceramic).

agreed, but ceramics came up as using beef FAT rather than bones, which is where I am struggling to find any valid examples at all. There are lots of other omissions on that poster, for example uses for manure leaves out construction, where wattle and daub is screaming for inclusion!

 

[Krugerrand]

agreed, but ceramics came up as using beef FAT rather than bones, which is where I am struggling to find any valid examples at all. There are lots of other omissions on that poster, for example uses for manure leaves out construction, where wattle and daub is screaming for inclusion!

I think we've put more hours into analyzing the poster than did whoever put it together in the first place.