Baking-free brick prepared from oil field silicon sludge and fly ash and preparation method of baking-free brick

The invention relates to the technical field of oil field solid waste resource utilization. The invention relates to a baking-free brick prepared from oil field silicon sludge and fly ash and a preparation method of the baking-free brick. The baking-free brick prepared from the oil field silicon sludge and the fly ash is composed of the raw materials: silicon sludge powder, the coal ash, cement, lime, gypsum, fine sand and an exciting agent; the silicon sludge powder, the coal ash, the cement, the lime and the gypsum are uniformly mixed, a primary mixture is mixed with the fine sand, the exciting agent is added into a secondary mixture, and a mortar mixture is placed in a mold for solidification forming to obtain the baking-free brick. The baking-free brick is prepared from the oil field waste silicon sludge and the coal ash generated by an oil field fluidized bed coal-fired boiler; the prepared baking-free brick has the characteristics of light weight, good water permeability, high strength, low cost and env