Patent ID: 8771412
Filing Date: 2014-07-08
Classification: B22C

Abstract:
1. A refractory wash for producing mold coatings on lost molds or to cores for iron and steel casting, wherein the refractory wash contains a proportion by weight of 0.001% through 0.99% of inorganic hollow bodies, characterized in that wherein the inorganic hollow bodies in part or in full consist of comprise a crystalline material, wherein the refractory wash comprises: (a) 0.0011 to 3.5 parts by weight of inorganic hollow bodies, which partially or fully consist of crystalline material; (b) 20 to 75 parts by weight of one or a plurality of refractory materials, which are not hollow bodies as defined under (a); (c) at least 15 parts by weight of at least one carrier fluid; (d) 0.1 to 10 parts by weight of one or a plurality of suspending agents; (e) 0.01 to 0.6 parts by weight of one or a plurality of biocides; (f) 0 to 4 parts by weight of one or a plurality of wetting agents; (g) 0 to 2 parts by weight of one or a plurality of floating agents and/or rheological additives; and (h) 0 to 2 parts by weight of one or a plurality of binding agents.