Technology and method for preparing rich-micropore metallurgical slag particles based on carbon etching

• Main Authors: DONG XINJIANG, LUO SIYI, YANG HANQI, LU RUNNAN, JIANG WEIHONG, ZUO ZONGLIANG, LIU YICHEN, FENG YAN
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: CARBURETTING AIR OR OTHER GASES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; FUELS; LUBRICANTS; METALLURGY; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a technology and a method for preparing micropore-rich metallurgical slag particles based on carbon etching and efficiently recovering metallurgical slag waste heat through coal gasification to solve the technical problems that the recovery rate of metal elements in metallurgical slag is low and the metallurgical slag waste heat cannot be efficiently recovered in metallurgical slag particles generated in the traditional technology and provides a technology and a method for preparing micropore-rich metallurgical slag particles based on carbon etching and efficiently recovering metallurgical slag waste heat through coal gasification. The device mainly comprises a granulation system, an etching powder adhesion system, an etching gasification system and a screening separation system which are connected in sequence, and efficient recycling of metallurgical slag waste heat and high-value conversion of metallurgical slag particle products are achieved mainly through the four steps of molten st