Waste heat utilization system for laterite-nickel ore RKEF process electric furnace slag

• Main Authors: WANG HUIXING, LIU SHAOKUN, SI XINGBIN, WANG RU
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2023
• Subjects: BLASTING; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; OPEN SINTERING OR LIKE APPARATUS; OVENS; RETORTS; WEAPONS

A laterite-nickel ore RKEF process electric furnace slag waste heat utilization system comprises a tunnel kiln, an air blower, an induced draft fan, a waste heat boiler, a steam turbine and a generator. The tunnel kiln is used for allowing a slag transporting vehicle filled with high-temperature slag to pass through, and a kiln vehicle for dragging the slag transporting vehicle is arranged in the tunnel kiln; an air inlet of the blower is communicated with the atmosphere, and an air outlet of the blower is communicated with the tail side of the tunnel kiln; the waste heat boiler is a heat exchange type waste heat boiler and comprises an air inlet, an air outlet, a water inlet and a steam outlet. An air inlet of the induced draft fan is communicated with the kiln head side of the tunnel kiln, an air outlet of the induced draft fan is communicated with an air inlet of the waste heat boiler, an air outlet of the waste heat boiler is communicated with the atmosphere, a water inlet of the waste heat boiler is used