A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings
The invention belongs to the field of resource regeneration, and particularly relates to a method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings. Themethod comprises the following steps: firstly, crushing the steel slag magnetic separation tailings containing 20%-30% of iron to 10mm-13mm by using selective crushing equipment, and selectively dissociating coarse-grained elemental iron particles; secondly, conducting magnetic separation under the field intensity of 300 Gs-1500 Gs, removing coarse-grained elemental iron in the form of magnetic concentrate and using the coarse-grained elemental iron as a steelmaking raw material; thirdly, finely crushing the magnetic separation tailings to 0.5mm-3.5mm by using roller type crushing equipment,and selectively dissociating calcium ferrite and magnesium ferrite by using hardness difference; and fourthly, carrying out magnetic separation under the field intensity of 500 Gs-3200 Gs, separatingout fine-grained elemental iron and merging the fine-grained elemental iron into the steelmaking raw material, and purifying residual calcium ferrite and magnesium ferrite crude products through a vibration bed eddy current sorting machine, thus obtaining a final product. The tailings without specific purposes generated in the process are merged for producing a cementing material, and finally all-component resource utilization of the steel slag is achieved.
本发明属于资源再生领域，具体涉及一种从钢渣磁选尾矿中分离铁酸钙和铁酸镁的方法。本发明首先用选择性破碎设备将含铁20％～30％的钢渣磁选尾矿破碎至10mm～13mm，选择性解离出粗粒单质铁粒。之后在300Gs～1500Gs场强下磁选，粗粒单质铁以磁选精矿的形式被去除并用作炼钢原料。再用辊式破碎设备将磁选尾渣细碎至0.5mm～3.5mm、利用硬度差异选择性解离出铁酸钙和铁酸镁。之后在500Gs～3200Gs场强下磁选，分离出细粒单质铁合并入炼钢原料，剩余的铁酸钙和铁酸镁粗产品以震动床涡电流分选机提纯，生产出最终产品。合并上述过程中产生的无特定用途的尾渣用于生产胶凝材料，最终实现钢渣的全组分资源化利用。
Method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings
The invention belongs to the field of resource regeneration, and particularly relates to a method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings. Themethod comprises the following steps: firstly, crushing the steel slag magnetic separation tailings containing 20%-30% of iron to 10mm-13mm by using selective crushing equipment, and selectively dissociating coarse-grained elemental iron particles; secondly, conducting magnetic separation under the field intensity of 300 Gs-1500 Gs, removing coarse-grained elemental iron in the form of magnetic concentrate and using the coarse-grained elemental iron as a steelmaking raw material; thirdly, finely crushing the magnetic separation tailings to 0.5mm-3.5mm by using roller type crushing equipment,and selectively dissociating calcium ferrite and magnesium ferrite by using hardness difference; and fourthly, carrying out magnetic separation under the field intensity of 500 Gs-3200 Gs, separatingout fine-grained elemental iron and merging the fine-grained elemental iron into the steelmaking raw material, and purifying residual calcium ferrite and magnesium ferrite crude products through a vibration bed eddy current sorting machine, thus obtaining a final product. The tailings without specific purposes generated in the process are merged for producing a cementing material, and finally all-component resource utilization of the steel slag is achieved.
本发明属于资源再生领域，具体涉及一种从钢渣磁选尾矿中分离铁酸钙和铁酸镁的方法。本发明首先用选择性破碎设备将含铁20％～30％的钢渣磁选尾矿破碎至10mm～13mm，选择性解离出粗粒单质铁粒。之后在300Gs～1500Gs场强下磁选，粗粒单质铁以磁选精矿的形式被去除并用作炼钢原料。再用辊式破碎设备将磁选尾渣细碎至0.5mm～3.5mm、利用硬度差异选择性解离出铁酸钙和铁酸镁。之后在500Gs～3200Gs场强下磁选，分离出细粒单质铁合并入炼钢原料，剩余的铁酸钙和铁酸镁粗产品以震动床涡电流分选机提纯，生产出最终产品。合并上述过程中产生的无特定用途的尾渣用于生产胶凝材料，最终实现钢渣的全组分资源化利用。
Method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings
一种从钢渣磁选尾矿中分离铁酸钙和铁酸镁的方法
HU WENTAO (author) / NI WEN (author) / GUO JIUCHUAN (author) / LIU XINWEI (author)
2020-06-16
Patent
Electronic Resource
Chinese
IPC:
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
B02C
CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL
,
Brechen, Pulverisieren oder Zerkleinern allgemein
/
B03C
Magnetische oder elektrostatische Trennung fester Stoffe von festen Stoffen oder flüssigen oder gasförmigen Medien
,
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
/
C04B
Kalk
,
LIME
FERRITE MAGNETIC MATERIAL FERRITE MAGNET FERRITE SINTERED MAGNET
European Patent Office | 2016
FERRITE MAGNETIC MATERIAL, FERRITE MAGNET, FERRITE SINTERED MAGNET
| European Patent Office | 2017
Ferrite magnetic material, ferrite magnet, and ferrite sintered magnet
| European Patent Office | 2015