High-Performance Lining Structure with Controlled Lateral Clearances

Abstract

Container having a lining structure, comprising a crystalline phase containing 55 to 97 wt % of xonotlite crystallites and 3 to 45 wt % of tobermorite crystallites and comprising less than 15 wt % of intermediates of formula Ca x Si y O z .wH 2 O where 1<x<16, 1<y<24, 4<z<60 and 1<w<18, including less than 5 wt % of CaCO 3 , and less than 5 wt % of SiO 2 and in that said lining structure is homogeneous, characterized in that said container has a discontinuous or continuous lateral clearance between the internal surface of the metal shell thereof and the external surface of the lining structure.

1 - 9 . (canceled) 
     
     
         10 . A container having a filler structure comprising a crystalline phase having 55 to 97% by weight of xonotlite crystallites, 3 to 45% by weight of tobermorite crystallites, less than 15% by weight of intermediates having the formula Ca x Si y O z .wH 2 O where 1<x<16, 1<y<24, 4<z<60 and 1<w<18, including less than 5% by weight of CaCO 3 , and less than 5% by weight of SiO 2 , said filler structure being homogenous and said container having a continuous or discontinuous side clearance between the inner surface of its metal shell and the outer surface of the lining structure. 
     
     
         11 . The container as claimed in  claim 10 , characterized in that the continuous or discontinuous side clearance has a width between 0.001 mm and 0.1 mm, preferably between 0.001 and 0.05 mm. 
     
     
         12 . A method for fabricating a container having a filler structure comprising a crystalline phase having 55 to 97% by weight of xonotlite crystallites, 3 to 45% by weight of tobermorite crystallites, less than 15% by weight of intermediates having the formula Ca x Si y O z .wH 2 O where 1<x<16, 1<y<24, 4<z<60 and 1<w<18, including less than 5% by weight of CaCO 3 , and less than 5% by weight of SiO 2 , said filler structure being homogenous and said container having a continuous or discontinuous side clearance between the inner surface of its metal shell and the outer surface of the lining structure comprising the following steps:
 a) a step of hydrothermal synthesis of a filler mass carried out with a mixture of quicklime and silica,   b) a step of introducing the filler mass of step a) into a container having a metal shell,   c) a step of cooling the filler mass in the container of step b) by spraying a liquid or a gas, having a temperature between 15 and 25° C., on at least part of the periphery of the container for a period of between 30 seconds and 10 minutes, thereby forming a discontinuous or continuous side clearance between the inner surface of the metal shell and the outer surface of the filler mass,   d) a step of drying the filler mass in the container after step c).   
     
     
         13 . The method as claimed in  claim 12 , characterized in that in step c), the water is sprayed on the whole periphery of the container in order to arrange a continuous side clearance between the whole inner surface of the metal shell and the whole outer surface of the filler mass. 
     
     
         14 . The method of  claim 12 , characterized in that before step b) of introducing the filler mass, a degradable lining product is applied during the drying step on the whole inner surface of the metal shell of the container wherein the presence of the degradable lining product contributes to the arrangement of the side clearance. 
     
     
         15 . The method of  claim 12 , characterized in that step a) of hydrothermal synthesis comprises:
 (i) a sub-step of a temperature rise, over a period shorter than 10 h, of an initial mixture of quicklime and silica to a temperature T 1  between 150 and 300° C.,   (ii) a sub-step of fabrication of the filler mass carried out:
 using the mixture of quicklime and silica from sub-step (a)(i), 
 at a temperature T 1  between 150 and 300° C., 
 at a pressure P 1  between 5×10 5  Pa and 25×10 5  Pa, and 
 for a period between 10 h and 70 h. 
   
     
     
         16 . The method of  claim 12 , characterized in that the quicklime is obtained by calcination, at a temperature of at least 850° C. for at least one hour, of limestone fragments wherein at least 90% by weight of the limestone fragments are have a size of 1 to 15 mm, a purity of at least 92% by weight, and an open porosity of 0 to 25%. 
     
     
         17 . The method of  claim 12 , characterized in that the drying step d) is carried out at a temperature of 300 to 450° C. 
     
     
         18 . The container of  claim 10 , further comprising an acetylene stored therein. 
     
     
         19 . The method of  claim 12 , further comprising a step e) of filling the container with an acetylene.