bone ash

This used bone ash for a phosphate source, as described above.

Typically, bone ash gives the china a high degree of translucency.

Sacks of powdery bone ash were emptied in the river.

As a powder coating, bone ash has multiple unique characteristics.

Bone ash was the major source of phosphorus until the 1840s.

Lucy orders a twenty-pound bag of natural bone ash for her next effort.

Bone ash is a white material produced by the calcination of bones.

Bones contain nitrogen and phosphorus, thus bone ash is often found in fertilizers.

In this sense, bone ash has been characterized as being a great sealing mechanism for seams or cracks.

In 1749, Thomas Frye took out a patent on a porcelain containing bone ash.

Historically-important but limited commercial sources were organic, such as bone ash and (in the latter 19 century) guano.

Bone ash usually has a density around 3.10 g/mL and a melting point of 1670 ℃.

Calcium phosphate is one of the main combustion products of bone, see bone ash.

They used to be small vessels shaped in the form of an inverted truncated cone, made out of bone ashes.

These bones are crushed before being degelatinised and then calcined at up to 1250 C to produce bone ash.

Lead was melted in a bone ash 'test' or 'cupel' and air blown across the surface.

Bone ash: useless, worse than useless, an ignorant, stupid, pagan superstition.

A traditional ground may be prepared with a rabbit skin glue solution pigmented with bone ash, chalk and/or lead white.

Bone ash can be used for multiple things, such as fertilizers, polishing compounds, or in the production of ceramics like bone china.

As they dragged their raft through the gentle surf and onto sand fine as bone ash, Paul realized that he was laughing with pleasure.

In addition, bone ash also has the capability of being used as a protective coating for metal equipment, tools, or around a floor as moulding.

The composition of bone china consists of about 50% bone ash, which comes from animal bones.

Frye used up to 45% bone ash in his formulation to create what he called 'fine porcelain.'

In the early days, white phosphorus was obtained from bone ash by treating them with hydrochloric acid to produce precipitated phosphates.

The white color is achieved through the addition of an opacifier, e.g. tin dioxide or bone ash.