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Steel slag treatment technology and application of tailings obtained by steel slag treatment process
The invention belongs to the technical field of steel slag production and application, and discloses a steel slag treatment technology. The steel slag treatment technology comprises the following steps that: 1) pretreatment is performed on steel slag, wherein the pretreatment involves hot splashing treatment and piling braising; and (2) steel slag obtained after pretreatment in the step (1) is screened after being subjected to three-stage crushing, materials with the particle size smaller than or equal to 8 mm are directly subjected to multi-stage magnetic separation, magnetic substances are final product steel fine powder, non-magnetic substances are final product tailings, materials with the particle size larger than 8 mm enter a rod mill to be crushed again, the crushed materials are screened again, the materials with the particle size larger than 8 mm are sorted through a magnetic separator, magnetic substances are final product particle steel, and non-magnetic substances circularly enter the rod mill. According to the process of the technology, sewage and visual pollution are not generated, production is not affected by regions and seasons, and the TFe grade of the steel fine powder and the recovery rate of the magnetic substance are improved; and the application channel of the steel slag tailings is widened, the steel slag tailings can be used for road surface layers in alpine regions, the benefits of the tailings are improved, and cyclic utilization of metallurgical solid waste resources is achieved.
本发明涉及钢渣生产应用技术领域，公开了一种钢渣处理工艺，包括以下步骤：1)将钢渣进行预处理，所述预处理包括热泼处理和堆焖；2)将步骤1)预处理后所得钢渣，经三级破碎后筛分：将粒级≤8mm物料直接进行多级磁选选别，磁性物为终产品钢精粉，非磁性物为终产品尾渣；粒级＞8mm物料进入棒磨机进行再次破碎，经破碎的物料再次筛分，粒级＞8mm的物料采用磁选机进行选别，磁性物为终产品粒子钢，非磁性物循环进入棒磨机。本发明工艺过程不产生污水和可视性污染，生产不受地区性、季节性影响，提升了钢精粉TFe品位和磁性物回收率。并拓宽了钢渣尾渣的使用渠道，可用于高寒地区道路面层，提升了尾渣的效益，实现了冶金固废资源的循环利用。
Steel slag treatment technology and application of tailings obtained by steel slag treatment process
The invention belongs to the technical field of steel slag production and application, and discloses a steel slag treatment technology. The steel slag treatment technology comprises the following steps that: 1) pretreatment is performed on steel slag, wherein the pretreatment involves hot splashing treatment and piling braising; and (2) steel slag obtained after pretreatment in the step (1) is screened after being subjected to three-stage crushing, materials with the particle size smaller than or equal to 8 mm are directly subjected to multi-stage magnetic separation, magnetic substances are final product steel fine powder, non-magnetic substances are final product tailings, materials with the particle size larger than 8 mm enter a rod mill to be crushed again, the crushed materials are screened again, the materials with the particle size larger than 8 mm are sorted through a magnetic separator, magnetic substances are final product particle steel, and non-magnetic substances circularly enter the rod mill. According to the process of the technology, sewage and visual pollution are not generated, production is not affected by regions and seasons, and the TFe grade of the steel fine powder and the recovery rate of the magnetic substance are improved; and the application channel of the steel slag tailings is widened, the steel slag tailings can be used for road surface layers in alpine regions, the benefits of the tailings are improved, and cyclic utilization of metallurgical solid waste resources is achieved.
本发明涉及钢渣生产应用技术领域，公开了一种钢渣处理工艺，包括以下步骤：1)将钢渣进行预处理，所述预处理包括热泼处理和堆焖；2)将步骤1)预处理后所得钢渣，经三级破碎后筛分：将粒级≤8mm物料直接进行多级磁选选别，磁性物为终产品钢精粉，非磁性物为终产品尾渣；粒级＞8mm物料进入棒磨机进行再次破碎，经破碎的物料再次筛分，粒级＞8mm的物料采用磁选机进行选别，磁性物为终产品粒子钢，非磁性物循环进入棒磨机。本发明工艺过程不产生污水和可视性污染，生产不受地区性、季节性影响，提升了钢精粉TFe品位和磁性物回收率。并拓宽了钢渣尾渣的使用渠道，可用于高寒地区道路面层，提升了尾渣的效益，实现了冶金固废资源的循环利用。
Steel slag treatment technology and application of tailings obtained by steel slag treatment process
一种钢渣处理工艺及其所得尾渣的应用
WANG BAOQUAN (author) / CAI QUANCAI (author) / DING WANXIN (author) / WANG QINGHAI (author) / WU JUNXIN (author) / CHEN ZHIQIANG (author) / TANG WANYUN (author) / HE GUOLU (author) / WANG ZHONGQUAN (author) / ZHANG CHANG (author)
2022-02-15
Patent
Electronic Resource
Chinese
IPC:
C21B
Gewinnung von Eisen oder Stahl
,
MANUFACTURE OF IRON OR STEEL
/
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
/
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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