This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ... fusible than the corresponding silicate of only one base. C. If the magnesia be increased to the ratio of one equivalent to each equivalent of lime, the resultant silicate is not much more fusible, and may be less fusible, than the corresponding pure lime silicate. D. In the case of the 3.5 silicates, replacing part ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ... fusible than the corresponding silicate of only one base. C. If the magnesia be increased to the ratio of one equivalent to each equivalent of lime, the resultant silicate is not much more fusible, and may be less fusible, than the corresponding pure lime silicate. D. In the case of the 3.5 silicates, replacing part of the lime by magnesia does not increase the fusibility. E. The principle that a silicate of two bases is more fusible than the corresponding silicate of either of those bases alone, is of limited application. Experiment 31 Formation Point And Melting Point.--It is generally believed that, in order to induce free silica and free bases mechanically mixed with it to combine, they have to be heated to a temperature considerably above the temperature at which the resultant silicate, once formed, will remelt; in short, that the formation point of a silicate is usually considerably above its melting point. To illustrate this, prepare 200 grammes of a mixture of Silica 41 per cent. Alumina 25" Lime 34" 100" of such size that it will pass through a sieve of 20 meshes to the linear inch, but will not pass one of 40 meshes. Melt half of this in a brasqued crucible, and granulate it in water. Regrind this to the same size as before, and make from it three pyramids as described in the general directions for this group of experiments. Make also three like pyramids from the part of this silicate which has not been melted. On account of the coarse size of the particles, liquid asphalt should be used as a binding material instead of vaseline and oil. Now determine the melting point of these pyramids, placing them side by side, as in the preceding experiments; in particular determine the difference between the melting points of the pyramids made...
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Add this copy of Metallurgical Laboratory Notes to cart. $49.69, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2009 by Nabu Press.
Add this copy of Metallurgical Laboratory Notes to cart. $63.29, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
