Method for preparing graphitized carbon from anthracite

The invention discloses a method for preparing graphitized carbon from anthracite. The method is characterized in that anthracite is subjected to a dense medium cyclone process to obtain clean coal, on one hand, the clean coal is sequentially subjected to a pre-drying process, a roasting process, an electric calcining process and a cooling process to obtain graphitized carbon, and on the other hand, the clean coal serves as a low-temperature solid material and is sequentially subjected to a pre-drying process, a roasting process and an electric calcining process to form a high-temperature solid material. In the pre-drying process, a heat exchange device is adopted; and the heat exchange device comprises a heat exchanger composed of an outer cylinder and an inner cylinder, wherein the high-temperature solid material and/or a composition of the high-temperature solid material and high-temperature gas pass through the inner cylinder; and the low-temperature solid material passes through the outer cylinder. The h