Sodium polyphosphate bond of nonshr inking magnesite - Chromite gunite

Yu A. Pirogov, A. V. Boltyanskii, V. Yu Prokudin, V. N. Tolmachev, T. K. Starolub, G. A. Semenov, K. E. Frantseva, E. N. Nikolaev

Research output: Contribution to journalArticlepeer-review


Phase analyses by x-ray methods, petrography, mass-spectrometry, chemical analyses, and paper chromatography were used in an investigation of the composition of the phosphate bond of a nonshrinking Gunite intended for the guniting of the roof of open-hearth furnaces during the downtime for repairs. The phosphate bond is a complex mixture of ortho-, pyro-, poly-, and cyclic phosphates. The amount of orthophosphates in the bond increases appreciably, while that of the chain (-n < 20) and cyclic phosphates decreases with an increase in the heat-treatment temperature. It was established that the added sodium polyphosphate reacts more effectively with the magnesite component of the Gunite.

Original languageEnglish
Pages (from-to)479-485
Number of pages7
Issue number7-8
Publication statusPublished - Jul 1977
Externally publishedYes


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