A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for manufacturing mine filling material by curing copper tailing using iron tailing
The invention relates to a method for manufacturing a mine filling material by curing copper tailing using iron tailing. The method comprises the following steps: firstly selecting the iron tailing, the copper tailing and bauxite and drying and fining; preparing Na2CO3 and KOH powder into a mixed activator according to a mass ratio of 1:2-4 and grinding to be smaller than 200 meshes; mixing 20-30 parts by mass of fined iron tailing, 60-70 parts by mass of copper tailing, 2-8 parts by mass of bauxite and 2-8 parts by mass of mixed activator and uniformly stirring, placing the mixture in a furnace to calcine for 50-80 minutes under the condition of high temperature of 350-650 DEG C, cooling the mixture and then taking out at room temperature, adding water according to the liquid-solid mass ratio of 0.3-0.5:1 and uniformly stirring the mixture into slurry, and pouring into a mold to manufacture the filling material. Through the method, the compressive strength of a prepared test piece can reach 40.2 MPa, the heavy metal leaching toxicity meets the national standard GB5085.3-2007 'Identification standards for hazardous wastes-Identification for extraction toxicity'. By using the method, the comprehensive utilization added value of the iron tailing and the copper tailing is improved, the goaf filling cost is effectively reduced, and the mining region environment is improved.
Method for manufacturing mine filling material by curing copper tailing using iron tailing
The invention relates to a method for manufacturing a mine filling material by curing copper tailing using iron tailing. The method comprises the following steps: firstly selecting the iron tailing, the copper tailing and bauxite and drying and fining; preparing Na2CO3 and KOH powder into a mixed activator according to a mass ratio of 1:2-4 and grinding to be smaller than 200 meshes; mixing 20-30 parts by mass of fined iron tailing, 60-70 parts by mass of copper tailing, 2-8 parts by mass of bauxite and 2-8 parts by mass of mixed activator and uniformly stirring, placing the mixture in a furnace to calcine for 50-80 minutes under the condition of high temperature of 350-650 DEG C, cooling the mixture and then taking out at room temperature, adding water according to the liquid-solid mass ratio of 0.3-0.5:1 and uniformly stirring the mixture into slurry, and pouring into a mold to manufacture the filling material. Through the method, the compressive strength of a prepared test piece can reach 40.2 MPa, the heavy metal leaching toxicity meets the national standard GB5085.3-2007 'Identification standards for hazardous wastes-Identification for extraction toxicity'. By using the method, the comprehensive utilization added value of the iron tailing and the copper tailing is improved, the goaf filling cost is effectively reduced, and the mining region environment is improved.
Method for manufacturing mine filling material by curing copper tailing using iron tailing
LI DONGWEI (author) / HUANG TAO (author) / HUANG XIAO (author) / ZHOU WEN (author)
2015-08-19
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Novel tailing cementitious material for metal mine full-tailing filling
| European Patent Office | 2020
Filling tailing curing agent containing copper smelting slag
| European Patent Office | 2021