Casting mould for hanging wall bricks, and preparation technology thereof

The invention belongs to a casting mould for hanging wall bricks. The casting mould comprises the following active ingredients in parts by weight: 40-55 parts of silica sand with grain size of 1-3mm, 45-60 parts of silica sand with grain size of 0-2mm (excluding 0), and 5-6 parts of sodium trisilicate. Sand removal at the inner arc of a fused zirconia alumina hanging wall brick cast is easy, the labor intensity of brick workers can be lowered, the working efficiency can be improved, the wear on irregular parts of a diamond-impregnated grinding wheel in the cold processing process can also be reduced, the service life of the grinding wheel is prolonged, the production cost can be lowered, and the processing precision and quality of the hanging wall bricks can be enhanced.