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The feasibility of applying specially designed refractory articles is demonstrated. Through the use of such articles it is shown that it is possible to reduce the thermal stresses that are experienced in the use of lining, markedly reduce separation of refractory products, and reduce heat losses through the brickwork by virtue of the presence of a heat-insulating layer in a given article consisting of refractory material and artificial pores as well as gaps for placement of additional heat insulation. These types of refractory products may be compacted and either roasted or unroasted and may also be manufactured according to the technology used in the fabrication of concrete. A press mold has been produced and put into production at the refractory plant of OAO NTMK for the purpose of fabricating specialized articles. The articles have successfully undergone tests, introduced into the crown of open-hearth furnaces, and are used for lining of rotary furnaces. The life of the linings was increased 1.3 – 1.4-fold
Refractories and Industrial Ceramics – Springer Journals
Published: Dec 1, 2010
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