Process and equipment for extracting B-type chromium powder from electroplating sludge

The invention relates to the technical field of B-type chromium powder extraction, in particular to extraction equipment for extracting B-type chromium powder from electroplating sludge, the extraction equipment comprises a base and a shell, two feeding pipes are fixedly mounted on the shell, a steam cavity and a sulfur melting groove are formed in the shell, a servo motor is mounted on the shell, and the servo motor is connected with the base. A first fixing block is fixedly mounted at the driving end of the servo motor, the upper surface of the first fixing block is attached to the upper inner wall of the sulfur melting tank, and a second fixing block is fixedly mounted on the lower inner wall of the sulfur melting tank; a spiral pipe is arranged in the shell, annular blocks are fixedly connected to the upper end and the lower end of the spiral pipe, and the annular block located on the upper portion is fixedly connected with the first fixing block. According to the method, almost no chromium flows into was