Raw Materials Cont
BA310 - DOLOMITE (NATURAL)
A natural material which combines calcium and magnesium
carbonates. Generally used as a flux in stoneware glazes although in combination
with other fluxes it can be effective down to 1060°C. Above 5% it begins to
opacify and will eventually produce a matt glaze. Available in 5 kg and 25 kg
sizes.
BA320 - DOLOMITE (SYNTHETIC)
High quality natural Australian dolomite is not always
available and is often variable. Our synthetic material is an excellent
replacement. Available in 1 kg, 5 kg and 25 kg sizes.
BA330 - ECKALITE 1 (KAOLIN SUPERIOR GRADE)
Primary clay which is pure, highly refractory and fires white
in colour. A source of alumina and silica in glazes and a constituent of many
clay bodies where whiteness is desirable e.g. bone china. Available in 1 kg, 5
kg and 25 kg sizes.
BA331 - ECKAGLAS (KAOLIN)
Primary clay which is pure, highly refractory and fires white
in colour. A source of alumina and silica in glazes and a constituent of many
clay bodies where whiteness is desirable e.g. bone china. Available in 1 kg, 5
kg and 25 kg sizes.
BA340 - FELDSPAR SODA
Feldspars are major fluxes in all clay bodies (up to
15%) and the principal materials and fluxes in high temperature stoneware
glazes (approx.50%). They are low temperature secondary fluxes and can be
regarded as natural frits. Available in 1 kg, 5 kg and 25 kg sizes.
BA350 - FELDSPAR POTASH ( PREMIUM GRADE)
Available in 1 kg, 5 kg and 25 kg sizes.
BA360 - FIRECLAY (HALLAM CRUDE)
Refractory clay used as an additive to bodies to produce
roughness and openness of texture. Also reduces risk of warping and cracking
during drying. This particular fireclay contains a large percentage of the
original granite minerals. Approx. 30% of +30 mesh minerals , primarily quartz
and micas. Useful in blending in stoneware bodies. Fires to a flecked buff
colour. Available in 25 kg size.
BA361 - FIRECLAY (Feeneys) Replaces Hallam since the closure of
the Hallam pit.
BA370 - FIRECLAY (ROWSLEY N0.2-MILLED)
A secondary clay useful for blending in stoneware bodies. Has
a small percentage of oversize quartz. Fires to a grey colour at 1300°C.
Available in 1 kg, 5 kg and 25 kg sizes.
.BA420 - GROG (COARSE, RED)
All grogs are used to produce openness of texture in clay
bodies, aid drying and reduce shrinkage and warping (usually up to 20%). The
texture is modified according to the mesh size of the grog used. Red grog is only for use in earthenware. Mesh size 8 to 30.
Available in 5 kg and 25 kg sizes.
BA430 - GROG (FINE, WHITE 30 MESH)
Available in 5 kg and 25 kg sizes.
BA440 - GROG (MEDIUM, WHITE +60 MESH)
Available in 5 kg and 25 kg sizes.
BA460 - ILMENITE SAND
Used in small quantities (2%) in conjunction with rutile to
assist in developing the characteristic rutile break in glazes. Used in this
form it can directly produce specks in bodies and specialized glazes. Available
in 5 kg size.
BA490 - IRON OXIDE (SYNTHETIC RED)
Iron oxides generally give a wide range of honey yellow,
brownish reds, browns and blacks and are extremely popular colouring pigments
for glazes and bodies. 3-8% gives yellows with yellow ochre, browns with haematite,
red-browns with red synthetic, greys with iron chromate and black with magnetite
or ferrous oxide. Speckled effects can be obtained with crocus martis. Warm
colours obtained in lead glazes and cooler ones in lead free and alkaline glazes
especially. Mottled creams can be obtained in the presence of tin. The final
colour obtained with iron oxide varies with the type of glaze, firing
temperature and kiln atmosphere. Iron oxide is also an active flux in glazes and
even in small amounts will make a glaze noticeably more fluid. Synthetic red is very fine and produces more even shades from
honey to dark brown (2-10%). Available in 500 gm, 1 kg, 5 kg and 25 kg sizes.
BA500 - IRON OXIDE (NATURAL RED)
Natural form of oxide which can be unstable & inconsistent
in its results. Available in 1 kg, 5 kg and 25 kg sizes.
BA510 - IRON OXIDE (BLACK)
Having a higher iron content than red iron oxide, it produces
darker shades of colour (4-8%). Available in 500gm,1 kg, 5 kg and 25 kg sizes.
BA520 - IRON OXIDE (YELLOW)
A natural form of iron oxide containing clay which gives
yellow to brown colours (3-8%). Available in 500gm, 1 kg, 5 kg and 20 kg sizes.
