Effect of type and amount of periclase and dispersing additive type on the properties of vibrocast non­cement periclase siliceous mix and samples from it

  • V. V. Primachenko
  • L. A. Babkina
  • I. V. Khonchyk
  • L. N. Nikulina
  • A. S. Tinigin
  • T. G. Tishina
Keywords: vibrocast non­cement periclase siliceous mix, magnesia aggregate, silica­containing and dispersing additives, technological parameters, properties, application temperature.

Abstract

Researches have been carried out, as well as a composition and technological parameters for obtaining of vibrocast non­cement periclase siliceous mix and products based on it have been developed. The possibility of using scrap of periclase products along with fused and sintered periclase, the use of which ensures obtaining of high strength properties of samples fired at 1450  C was established. The possibility of using domestically produced powdered quartz as a silica­containing additive, and as dispersing additives: a polymer based on polyethylene glycol; a silica­containing material with a particle size of less than 2 microns and an activity index of hydrogen ions of a 10  % aqueous suspension pH = 6; a chemical phosphate binder was shown. The optimum firing temperature of products (~ 1450  C), as well as the possible application temperature of fired products ( 1580  C), were established.

The vibrocast non­cement periclasesiliceous mix and samples from it are characterized, depending on the type of magnesia aggregate and dispersing additive, by the following indicators of physicochemical properties: mass.  %: MgO — not less than 86  %, SiO2 — within 6—8  %, Fe2O3 — not more than 1.5  %; grain composition, mm — 6—0; cold crushing strength of samples from this mix after heat treatment at a temperature of 350 and 1450  C is 20—45 and 30—80 N/mm2, respectively; residual dimensional changes during heating (shrinkage) at a temperature of 1580  C (2 h) — not more than 1  %; refractoriness — > 1780  C.

The developed vibrocast non­cement periclasesiliceous mix is recommended for vibrocast monolithic linings of high­temperature units of ferrous and non­ferrous metallurgy, cement and other industries, as well as for the manufacture of vibrocast large­sized products and products of complex configuration, both unburnt and burnt.

Published
2019-12-31
How to Cite
Primachenko, V. V., Babkina, L. A., Khonchyk, I. V., Nikulina, L. N., Tinigin, A. S., & Tishina, T. G. (2019). Effect of type and amount of periclase and dispersing additive type on the properties of vibrocast non­cement periclase siliceous mix and samples from it. Scientific Research on Refractories and Technical Ceramics, 119, 53-66. https://doi.org/10.35857/2663-3566.119.06