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Old 04-15-2012, 02:58 PM
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for the firing you could inspire yourself from:

Microwave melting of metals

Quote:
The microwave work was triggered by a short reference to the refining of rare earth metals, at Illawara Technology Centre, which was mentioned by a visitor to the Central Saint Martins foundry, Dennis Glaser. Since these metals melt at temperatures above 800 degrees Celcius, it seemed possible that the method could be adapted to melt and cast small objects in the workshop or studio. If this could be done a domestic microwave would, effectively, become a cheap and accessible furnace.

Trials were begun which simply aimed to melt metals such as silver and bronze in open crucibles. However, it soon became obvious that casting to shape could also be accomplished by adapting the Reid Technique (RT) - a simplified ceramic-shell procedure for the casting of non-ferrous metals, patented in 1990. RT was first developed to avoid the problem of heat loss, which makes the the pouring of small melts very difficult - these difficulties arise however the metal is heated, and while the microwave technique set out here can be used for heating small amounts of metal in open crucibles, its greatest potential lies in its use as a flameless furnace in processes such as the Reid Technique. The crucial discovery, made during extended tests with various susceptors - materials which heat up when exposed to microwaves - was that two substances, graphite and magnetite, working together were required to achieve the kind of heating we were looking for.
Quote:
SiC (Silicon Carbide) is a good susceptor and it couples at room temperature and is good up to about 1100C. Alternatives are Magnetite, and Zirconium.
Susceptor - Wikipedia, the free encyclopedia

Quote:
A susceptor is a material used for its ability to absorb electromagnetic energy and convert it to heat (which is sometimes designed to be re-emitted as infrared thermal radiation). This energy is typically radiofrequency or microwave radiation used in industrial heating processes, and also occasionally in microwave cooking. The name is derived from susceptance, an electrical property of materials that measures their tendency to convert electromagnetic energy to heat.

just don't use a microwave you heat your food with and always use caution .... respect the experiment

---------------------a bit of info on zeolite:

WORLDS BEST CAT LITTER, ZEOLITE CAT LITTER,AMMONIA FIGHTER,ECO FRIENDLY,HEALTHY KITTY,GET ZEOLITE

Zeolite is a molecular sponge (molecular sieve) with high porosity and absorbs free
ammonia
and other cat odours; not just absorbing and masking, but trapping and
holding the cause of pet odor. Zeolite is the world’s only naturally occurring
negatively charged mineral
and therefore Zeolite seeks and holds positive ions and
aqueous molecules (such as salts and ammonia from cat waste). In Europe and North
America Zeolite is currently used in two types of cat litter (traditional and
clumping). Zeolite is safe for pets , pet owners and the environment while
prohibiting the formation of odors. For any pet accidents outside of their litter area
simply add Zeolite to the area to absorb moisture and odors.
Benifits of Zeolite for Cat Litter
High liquid and ammonia absorption with premium odour control
• Reduced tracking with strength to withstand traffic with minimal dust
• Reduced cost of waste control
Zeolites have distinctive properties as absorbents as they provide a strong
molecular structure and micro-porosity, making them durable under the heaviest
traffic. The pores extend deep into the molecular structure of the Zeolite resulting in
a high surface area within the material. The depth of these pores allow for
continuous effective absorption. The benefits of high internal surface area, physical
strength and the ion exchange properties of the Zeolite, account for its exceptional
performance as a cat litter and odor control applications.
Zeolite is becoming prominent in the market place has been as a cat litter due to its
ammonia absorption and lock-up capability as well as its waste and odor absorption
capabilities. Unlike clay absorbents which are made of a plate type structure,
zeolites crystal lattice forms a honeycomb structure resulting in a large and reactive
surface area. This traps waste molecules and odours through molecular sieving
capability, allowing selective separation, absorption and immobilization. Another
unique feature is that Zeolite does not swell as in the case with clay. Zeolite does
not lose its structural integrity (as clay absorbs moisture the plates swell and
become soft and muddy). The honeycomb structure of Zeolite absorbs at a greater
rate yet stays firm and stable. When your animal walks on it, the integrity is the same
as when Zeolite came out of the bag whereas clay absorbent will become soft.

Last edited by MonsieurM : 04-15-2012 at 03:05 PM.
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