A refractory materialTACVORIAN SKONLEVECQUE MARCEL
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During the reign of Elizabeth I, Borrowdale graphite was used as a refractory material to line moulds for cannonballs, resulting in rounder, smoother balls that could be fired farther, contributing to the strength of the English navy.This particular deposit of graphite was extremely pure and ...
The main problem I had was that I was trying to make my own refractory material. I tried several different formulations. They all eventually cracked and/or melted and the foundries became unusable. Eventually I decided to do it right and build a foundry that would last more than a few fi...
Magnesite is a material which, among other uses, has an extensive employment as a refractory for metallurgical furnaces. Natural magnesite of the proper quality is relatively expen6 sive, as compared to the ordinary magesium carbonates of' natural occurrence; and endeavors have been made to... ...
The clinker of Portland cement is a mixture of raw material contains calcium, silicon, aluminum and ferric oxides, in addition to small quantities of other oxides that are burned together till sintering to produce clinker [2]. Although the huge reserves of clays in many Egyptian localities [3...
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Still further, while there is a suggestion that a porous refractory material can be immersed directly in a molten metal without the need for a mold, the refractory material would have to be an integral piece because there is no provision for infiltrating a loose or separated porous material ...