Method for the production of an ice surface for ice rinks

Abstract

A method for producing an ice surface for an ice rink by freezing water to which an inorganic substance is added is characterized in that the inorganic substance is ammonia, an alkali hydroxide or alkaline earth hydroxide, a hydrogen halide, nitric acid, sulfuric acid, phosphoric acid, an alkali salt, alkaline earth salt or ammonium salt of said acids, or ammonium-bicarbonate, or a mixture of several of said substances.

1 . Method for the production of a homogeneous ice layer for an ice rink by means of freezing water to which an inorganic substance is added, characterized in that the substance added to the water is an alkali hydroxide or alkaline earth hydroxide, a hydrogen halide, nitric acid, sulfuric acid, phosphoric acid, an alkali salt or alkaline earth salt of said acids or a mixture of several of said substances. 
   
   
       2 . Method for the production of hard ice for an ice rink, wherein water is applied to the cooled area of the ice rink, characterized in that ammonia is added to the water before freezing. 
   
   
       3 . Method according to  claim 1 , characterized in that preferentially HF, HCl, HBr, HI, LiOH, NaOH, KOH, Ca(OH) 2  or mixtures of several of these substances are added to the water. 
   
   
       4 . Method according to any of  claims 1  to  3 , characterized in that the substance added to the water is added in a concentration of up to 5 ppm. 
   
   
       5 . Method according to  claim 1 , characterized in that the maximum concentration of the substance added to the water does not exceed 20 ppm. 
   
   
       6 . Method according to  claim 1 , characterized in that the substance added to the water is added by admixing to the water before freezing in the form of dilute solutions. 
   
   
       7 . Method according to  claim 1 , characterized in that the substance added to the water is added by treating the ice after freezing with a liquid which contains the additives.