Search academic texts

Registration Number

0221U103257, 0120U105396 , R & D reports

Title

Investigation of phase formation processes and main properties of samples from the developed phosphate bonded zirconia corundum ramming mix after thermal treatment in the temperature range of 200-2100 °C and pilot batches out put of powders for plasmic coating, ramming mixes and mortars from ZrO2

popup.stage_title

Head

Shulik Iryna Н.,

Registration Date

17-02-2021

Organization

Joint Stock Company "The Ukrainian Research Institute of Refractories named after A. S. Berezhnoy"

popup.description2

The research object is a mix of stabilized zirconium dioxide. The purpose of the work is production technology mastering of phosphate bonded zirconia corundum ramming mix. The research methods are standard methods for research of chemical composition and physical-mechanical properties of refractories, X-ray method. Investigation of phase formation processes and main properties of samples from the developed phosphate bonded zirconia corundum ramming mix after thermal treatment in the temperature range of 200-2100 °C. The influence of thermal treatment temperature in the range from 200 to 2100 ºС on the main properties of samples from a new type of products — phosphate bonded zirconia corundum ramming mix based on ZrO2, stabilized by CaO, and phase formation processes occurring in these samples at the indicated temperatures was investigated. It was found that, the samples, which were thermal treated in the temperature range from 200 to 2000 ºC, were characterized by fairly high properties (open porosity varies from 13.4 to 17.2 %, apparent density — from 4.38 to 4.30 g/cm3, cold crushing strength — from 42 to 95 N/mm2), loosening and softening of their structure were not detected. This gives grounds to predict the high structural strength of lining, which is made from the developed phosphate bonded zirconia corundum ramming mix, in the service of heat unit at a temperature of ~ 2000 ºС. In JSC "URIR named after A.S. Berezhnoy" the pilot batches out put: ramming mass and powders for plasmic coating of zirconium dioxide, stabilized by CaO, with the properties corresponding to the requirements of TU. Manufactured refractory production was delivered to the domestic and foreign markets (export to the Russian Federation, Republic of Belarus, and Czech Republic). The work should be continued in the direction of further improvement of the production technology of mixes from stabilized zirconium dioxide and expansion of their production and use. 

Product Description

popup.authors

Protsak Olena B.

popup.nrat_date

2021-02-17