Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 (Autor:in) / NI WEN (Autor:in) / GUO JIUCHUAN (Autor:in) / LIU XINWEI (Autor:in)
16.06.2020
Patent
Elektronische Ressource
Chinesisch
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
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