Municipal sludge brick and preparation method thereof

The invention relates to a municipal sludge brick, which comprises the following components by weight: 30 parts of municipal sludge, 40-80 parts of shale powder, 0-5 parts of aluminum trioxide, 0-4 parts of iron trioxide and 0-8 parts of calcium oxide. The invention also relates to a preparation method of the municipal sludge brick. According to the invention, municipal sludge is used as a main raw material of brick making, not only solves the disposal problem of municipal sludge, but also replaces part of the brick making raw materials, saves the municipal sludge disposal cost and material resources, and also municipal sludge contains combustible components, thus being conducive to improving the roasting effect and saving the roasting cost. Moreover, municipal sludge has good sinterability, and can be mixed with shale powder for use to improve the brick quality. And appropriate mineral components can be added to further improve the brick performance. 本发明涉及一种城市污泥砖，包括以下重量份的组分原料：城市污泥30份、页岩粉40-80份、三氧化二铝0-5份、三氧化二