Coal gangue pavement decorative brick and preparation method thereof

The invention discloses a coal gangue pavement decorative brick and a preparation method thereof. The coal gangue pavement decorative brick is prepared from the following raw materials in parts by weight: 30-70 parts of coal gangue, 30-70 parts of shale, 5-10 parts of water and 1-10 parts of a color pigment, wherein the color pigment is prepared from the following raw materials in parts by weight:7-9 parts of titanium-cobalt- chromium system coloring oxide, 0.5-1 part of a polymer surfactant and 0.5-1.5 parts of a color difference adjusting agent. According to the coal gangue pavement decorative brick, waste can be fully utilized, environmental pollution is reduced, the manufactured brick has various color types, the coloring stability is good, and performance is excellent. 本发明公开了一种煤矸石路面装饰砖块及其制备方法，所述砖块由以下重量份的原料组成：煤矸石30-70份，页岩30-70份，水5-10份，彩色颜料1-10份，其中所述彩色颜料是由以下重量份的原料组成：钛-钴-铬系着色氧化物7~9份、高分子表面活性剂0.5~1份，调色差剂0.5~1.5份。该煤矸石路面装饰砖块不仅可使废物充分利用，减少环境污染，而且制造出的砖块颜色种类多，着色稳定性好，且性能优良。