Procedure for the manufacture of anhydric refractory pastes for the plugging of piqueras and bowls of colada in ovens. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for the manufacture of anhydrous refractory pastes for the capping of runners and mouths in furnaces, characterized by consisting of the mixture of a refractory raw material (sand, clay, chamotte, slate, etc.), essentially clay-rich sand and silica, dried by a suitable procedure such as fixed, rotary driers, etc. with an additional material, also dry, consisting of coal or coke, depending on the degree of porosity desired, said materials being ground and mixed in roller mills, propeller mixers or tub or the like, and kneaded with an addition of tar heated to approximately 100ºC, dehydrated and deoiled, and a chemical reagent, setting accelerator and paste hardener, preferably compounds of phosphorus, boron, sodium or phenolic resins, which act by the action of heat at temperatures below 300ºC, and in the presence of CO2, independently or jointly. (Machine-translation by Google Translate, not legally binding)