Device and technological process for preparing zinc powder from zinc-containing electric furnace ash

• Main Authors: GUO XIUJIAN, TIAN WENJIE, YONG HAIQUAN
• Format: Patent
• Language: Chinese; English
• Published: 15.04.2022
• Subjects: ARTIFICIAL STONE; CASTING; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; FERROUS OR NON-FERROUS ALLOYS; LIME, MAGNESIA; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TREATMENT OF NATURAL STONE; WORKING METALLIC POWDER

The invention relates to a device for preparing zinc powder from zinc-containing electric furnace ash and a technological process, and belongs to the technical field of metallurgy. The process comprises the following steps: mixing electric furnace ash with semi-coke or coke powder, and briquetting; then introducing into a vacuum rotary kiln for reduction reaction; cooling the flue gas generated by the reduction reaction through a vacuum condenser, an inertial dust collector and a bag-type dust collector in sequence; zinc powder formed by cooling is collected in ash buckets of a vacuum condenser, an inertial dust collector and a bag-type dust collector and packaged and sealed to serve as finished zinc; and taking out kiln slag in the rotary kiln as a cement raw material. The technical problem that zinc-containing electric furnace ash pollutes the environment is solved, and recycling of the zinc element is achieved. 本发明涉及一种含锌电炉灰制取锌粉的装置及工艺流程，属于冶金技术领域。该流程包括如下步骤：将电炉灰与兰炭或焦粉混合、压块；然后通入真空回转窑进行还原反应；将还原反应产生的烟气依次通过真空冷凝器、