Method for producing rock wool boards by comprehensively utilizing electric furnace ash

• Main Authors: YU QIAODI, LI CANHUA, ZHU GENMIAO, WANG ZHAORAN, WANG HAO, HUO CHENGCHENG
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2019
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE OF IRON OR STEEL; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; METALLURGY OF IRON; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention provides a method for producing rock wool boards by comprehensively utilizing electric furnace ash, and relates to the technical field of comprehensive utilization of fly ash with zinc.A reducing agent and an adhesive are added into the electric furnace ash for pelletizing, after drying, heating in a reduction furnace is conducted, the zinc, lead, alkali metal and halogen elements in the electric furnace ash are subjected to reduction by the reducing agent, and volatile zinc is recovered in a flue gas cooling device and can be taken as a crude zinc product; furnace slag in the reduction furnace mainly contains elements of Fe, Si, Ca, Al and Mg, a curing agent and an acidity regulator are added, the mixture and coke are subjected to high-temperature melting, and the rock woolboards can be obtained. The method is simple in technology, low in production cost and capable of achieving large-scale treatment of comprehensive utilization of the poisonous electric furnace ash waste and recycling of all t