The invention relates to the technical field of dry-type sand making, and discloses a dry-type sand
production line. The dry-type sand
production line comprises a screening type vibration feeder for screening raw stone materials and a jaw
crusher communicating with the screening type vibration feeder; an
impact crusher or a cone
crusher communicating with the jaw crusher through a
belt conveyor isused for crushing the stone materials crushed by the jaw crusher; and subsequently, the quality of sand
powder is improved through sand making by crushing, power removing by
drying,
powder content adjusting and mixed stirring by adding water. The dry-type sand making process comprises the steps of screening the raw stone materials, crushing the raw stone materials for the first time, crushing theraw stone materials for the second time, crushing the raw stone materials for sand making,
drying to remove the
powder, controlling the sand powder content by humidifying the sand powder and adjusting the powder content after
drying and removing powder, adding water for mixing and stirring, and bonding the powder and the sand into a whole to obtain a finished product. According to the productionline and the process, the powder content of sand particles is reduced through multi-stage crushing; and drying instead of
water washing is used for powder removal, and the heat of drying for powder removal is recycled, so that energy saving, environment-friendliness as well as high production efficiency are achieved.