Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for consolidating heavy metal elements in copper slag
The invention relates to the technical field of hazardous waste disposal in the metallurgical industry, in particular to a method for consolidating heavy metal elements in copper slag. The method comprises the following steps: mixing copper slag, mineral substances and an additive, and carrying out granulating, drying, and calcining, wherein the sum of SiO2 and Al2O3 in the mineral substances accounts for more than 50% of the total amount, and the ratio of SiO2 to Al2O3 is greater than or equal to 0.5; and the additive is selected from one or more of carbonate, sulfate, silicate, bentonite, montmorillonite, limestone, calcium oxide and magnesium oxide. According to the method, the specific copper slag is solidified through a specific method, and heavy metal elements in a solid substance leachate prepared according to GB5085.3-2007 Identification Standard for Identification of Hazardous Wastes are judged as common solid wastes according to HJ/T299. The granular material can replace natural gravel aggregate, and large-scale treatment and high-added-value application of the copper slag hazardous waste are achieved.
本发明涉及冶金工业危险废弃物处置技术领域，尤其涉及一种固结铜渣中重金属元素的方法。所述方法包括：将铜渣、矿物质、添加剂混合后造粒，干燥后进行煅烧；其中，所述矿物质中SiO2与Al2O3之和占总量的50％以上，SiO2/Al2O3比值≥0.5；所述添加剂为选自碳酸盐、硫酸盐、硅酸盐、膨润土、蒙托土、石灰石、氧化钙、氧化镁的一种或几种。本发明通过特定的方法固结特定的铜渣，所得粒状物依据GB5085.3‑2007《危险废物鉴别标准浸出毒性鉴别》，按照HJ/T299制备的固体物质浸出液中的重金属元素，判定为一般固废。本发明的粒状物可以替代天然砂石骨料，实现了铜渣危废规模化处置和高附加值化应用。
Method for consolidating heavy metal elements in copper slag
The invention relates to the technical field of hazardous waste disposal in the metallurgical industry, in particular to a method for consolidating heavy metal elements in copper slag. The method comprises the following steps: mixing copper slag, mineral substances and an additive, and carrying out granulating, drying, and calcining, wherein the sum of SiO2 and Al2O3 in the mineral substances accounts for more than 50% of the total amount, and the ratio of SiO2 to Al2O3 is greater than or equal to 0.5; and the additive is selected from one or more of carbonate, sulfate, silicate, bentonite, montmorillonite, limestone, calcium oxide and magnesium oxide. According to the method, the specific copper slag is solidified through a specific method, and heavy metal elements in a solid substance leachate prepared according to GB5085.3-2007 Identification Standard for Identification of Hazardous Wastes are judged as common solid wastes according to HJ/T299. The granular material can replace natural gravel aggregate, and large-scale treatment and high-added-value application of the copper slag hazardous waste are achieved.
本发明涉及冶金工业危险废弃物处置技术领域，尤其涉及一种固结铜渣中重金属元素的方法。所述方法包括：将铜渣、矿物质、添加剂混合后造粒，干燥后进行煅烧；其中，所述矿物质中SiO2与Al2O3之和占总量的50％以上，SiO2/Al2O3比值≥0.5；所述添加剂为选自碳酸盐、硫酸盐、硅酸盐、膨润土、蒙托土、石灰石、氧化钙、氧化镁的一种或几种。本发明通过特定的方法固结特定的铜渣，所得粒状物依据GB5085.3‑2007《危险废物鉴别标准浸出毒性鉴别》，按照HJ/T299制备的固体物质浸出液中的重金属元素，判定为一般固废。本发明的粒状物可以替代天然砂石骨料，实现了铜渣危废规模化处置和高附加值化应用。
Method for consolidating heavy metal elements in copper slag
一种固结铜渣中重金属元素的方法
WANG ZHAOJIA (Autor:in) / LIU YANJUN (Autor:in) / XU RUILAI (Autor:in) / LI SHA (Autor:in) / LI RUNFENG (Autor:in)
28.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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