Autoclaved sand-lime brick and manufacturing method thereof

The invention provides an autoclaved sand-lime brick and a manufacturing method thereof, which relates to the technical field of building materials. The autoclaved sand-lime brick comprises the following raw materials: phosphogypsum, coal ash, aggregate, a modifying agent and acetylene sludge. According to the technological formula, the added content of the phosphogypsum is high, and the new modifying agent and other components are combined, so that the performance indexes of an autoclaved sand-lime brick product are improved, the strength is high, the water resisting property is excellent, the durability is good, the utilization ratio of the phosphogypsum is improved, and the land occupation and the environmental pollution caused by the accumulation of a large number of phosphogypsum are reduced.