▎ 摘　　要

NOVELTY - The device has a smelting unit (1) and a granulation unit (2) arranged below the smelting unit. The smelting unit includes a smelting device (11) which is provided with a discharge port (12). The granulation unit includes a granulation chamber (21), a turntable (22) arranged inside the granulation chamber, and two material spray heads, and an inlet is provided above the granulation chamber and above the turntable. The outlet of the smelting unit and the inlet of the granulation unit are connected by a pipeline. The smelting device comprises a chamber (13) carrying molten silicon material and a heating and temperature control device arranged outside the chamber. The discharge port is arranged on the side of the chamber. A stirring device (15) is provided in the chamber. The material of the chamber is corundum and/or graphite. USE - Preparation device of silicon-based electrode material used for preparing lithium ion battery negative electrode material (all claimed). ADVANTAGE - The device can realize the silicon material in the same device to finish the pre-lithiation, nano-oxidation, doping and/or coating treatment, obtaining can be directly applied to the silicon-based cathode material of the lithium ion battery. The flow is simple, it can realize mass production, it has comprehensive advantages on the production cost and performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of silicon-based electrode material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a preparation device of silicon-based electrode material. Smelting unit (1) Granulation unit (2) Smelting device (11) Discharge port (12) Chamber (13) Stirring device (15) Granulation chamber (21) Turntable (22)