Process for preparing water permeable brick from potassium feldspar slag and waste incineration slag

The invention discloses a process for preparing a water permeable brick from potassium feldspar slag and waste incineration slag, which comprises the following steps: putting waste incineration slag into a crusher for crushing to obtain waste incineration slag particles; putting the waste incineration slag particles into a noxious substance treatment pond for stable soaking treatment through liquid; after stabilization treatment, putting the waste incineration slag particles into ball milling equipment for powder milling treatment to obtain waste incineration slag powder; putting the potassium feldspar slag into a crusher for crushing to obtain potassium feldspar slag aggregate; selecting cement and auxiliary additives, mixing and stirring the waste incineration slag powder, the potassium feldspar slag aggregate and water together to obtain a mixture; and pouring the mixture into a mold for manufacturing the water-permeable brick, and conducting demolding after solidification to obtain the water-permeable bri