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Method for manufacturing microlite from high-temperature ferronickel alloy waste slag
The invention relates to a method for manufacturing microlite from high-temperature ferronickel alloy waste slag, belonging to the technical field of reutilization of alloy waste slag. The technical process mainly comprises the steps of preparation and preheating of an admixture, hot mix melting, water quenching and cooling, grinding, and crystallization. The method comprises the following steps: by using kaolin with the particle size of 0.5mm as kaolin, weighing an alloy waste slag solution and the admixture in a mass ratio of (85-90):(10-15), and heating the admixture to 1300-1400 DEG C; keeping the mix melting temperature at 1450-1500 DEG C for 30-45 minutes while stirring; cooling the molten slag by water quenching; and adding the water quenching slag into a ball mill, milling, filling the slag powder into a mold, sending into a crystallizing kiln or crystallizing tunnel, heating to 950-1000 DEG C, keeping the temperature to perform crystallizing treatment for 120-180 minutes, carrying out furnace cooling or slow cooling at the rate of 5-8 DEG C/minute, and finally, demolding to obtain the microlite finished product. By effectively utilizing the high-temperature ferronickel alloy waste slag for producing microlite, the method reduces the environmental pollution, conforms to the requirements for national clean production, and has the advantages of lower investment cost, reliable technology and obvious economic benefit of production.
Method for manufacturing microlite from high-temperature ferronickel alloy waste slag
The invention relates to a method for manufacturing microlite from high-temperature ferronickel alloy waste slag, belonging to the technical field of reutilization of alloy waste slag. The technical process mainly comprises the steps of preparation and preheating of an admixture, hot mix melting, water quenching and cooling, grinding, and crystallization. The method comprises the following steps: by using kaolin with the particle size of 0.5mm as kaolin, weighing an alloy waste slag solution and the admixture in a mass ratio of (85-90):(10-15), and heating the admixture to 1300-1400 DEG C; keeping the mix melting temperature at 1450-1500 DEG C for 30-45 minutes while stirring; cooling the molten slag by water quenching; and adding the water quenching slag into a ball mill, milling, filling the slag powder into a mold, sending into a crystallizing kiln or crystallizing tunnel, heating to 950-1000 DEG C, keeping the temperature to perform crystallizing treatment for 120-180 minutes, carrying out furnace cooling or slow cooling at the rate of 5-8 DEG C/minute, and finally, demolding to obtain the microlite finished product. By effectively utilizing the high-temperature ferronickel alloy waste slag for producing microlite, the method reduces the environmental pollution, conforms to the requirements for national clean production, and has the advantages of lower investment cost, reliable technology and obvious economic benefit of production.
Method for manufacturing microlite from high-temperature ferronickel alloy waste slag
LIU RIHONG (author) / TIAN PENGFEI (author)
2015-04-22
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
.MANUFACTURING METHOD OF EMBANKMENT BLOCK COMPRISING FERRONICKEL SLAG
| European Patent Office | 2021