초록 ▼

A device for the preparation of coated products, particularly, but not exclusively, for the construction and maintenance of highways, from aggregate, finely divided material and a binder, comprising a cylindrical drum having an inlet end and an outlet end and rotatably mounted on a platform so that

A device for the preparation of coated products, particularly, but not exclusively, for the construction and maintenance of highways, from aggregate, finely divided material and a binder, comprising a cylindrical drum having an inlet end and an outlet end and rotatably mounted on a platform so that the inlet end is higher than the outlet end, a mechanism for feeding aggregate and finely divided material to the inlet end of the drum, a burner projecting into the inlet end of the drum, and a fixed chamber at the outlet end of the drum for receiving coated products and for discharge of gases circulating in the drum. The drum comprises three zones including a first zone which receives aggregate and finely divided material from the feeding means and conveys it to a second zone substantially without mixing, the second zone serving for homogenizing the mixture of aggregate and finely divided material and optionally for preheating and predrying the mixture and containing lifting devices for lifting the aggregate and finely divided material, the lifting capability of the devices increasing from the inlet to the outlet end of the second zone, and a third zone for mixing the aggregate and finely divided material mixture with binder and optionally for heating and drying the mixture, the binder being supplied to the inlet of the third zone. The third zone includes lifting devices having a high lifting capability such that the products form a substantially continuous curtain across the drum.

대표청구항

대표청구항이 없습니다.