Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of steelmaking tailing treatment, and provides a steel smelting tailing treatment process. The process comprises the following steps: feeding tailings into a permanent magnetic roller for primary magnetic separation to separate out magnetic tailings A and tailings a, and screening through a bar screen to obtain tailings b with the particle size smaller than screen holes and tailings c with the particle size larger than the screen holes; performing drying and secondary magnetic separation on the tailings b to obtain magnetic tailings B and tailings d, sequentially performing coarse grinding through a rod mill and fine grinding through a vertical mill on the tailings d to obtain tailings powder with the specific surface area being 420 m < 2 >/kg or above, uniformly stirring and mixing the tailings powder and carbonized sludge, and then putting the mixture into a calcining furnace to be calcined to obtain the tailings recycled material. The problems that an effective treatment method for tailings generated in the existing steel smelting process is lacked and the resource utilization rate is low are solved, the tailings recycled material serving as a mineral admixture is applied to concrete to replace part of cement, and the use amount of the cement is reduced.
本发明涉及炼钢尾渣处理技术领域，提供一种钢铁冶炼尾渣处理工艺，包括以下步骤：将尾渣送入永磁磁力滚筒进行初次磁选，分离出磁性尾渣A和尾料a，经过棒条筛进行筛分，得到粒度小于筛孔的尾料b和粒度大于筛孔的尾料c，尾料b经过烘干、二次磁选，得到磁性尾渣B和尾料d，所述尾料d依次经过棒磨机粗磨，立式磨机细磨，得到比表面积420m2/kg以上的的尾渣粉，尾渣粉再与炭化污泥搅拌混合均匀，然后投入煅烧炉内进行煅烧，得到尾渣回收料。其解决了现有钢铁冶炼过程中产生的尾渣缺乏有效的处理方法，资源化利用率低的问题，尾渣回收料作为矿物掺合料应用于混凝土中，替代部分水泥，减少水泥的用量。
The invention relates to the technical field of steelmaking tailing treatment, and provides a steel smelting tailing treatment process. The process comprises the following steps: feeding tailings into a permanent magnetic roller for primary magnetic separation to separate out magnetic tailings A and tailings a, and screening through a bar screen to obtain tailings b with the particle size smaller than screen holes and tailings c with the particle size larger than the screen holes; performing drying and secondary magnetic separation on the tailings b to obtain magnetic tailings B and tailings d, sequentially performing coarse grinding through a rod mill and fine grinding through a vertical mill on the tailings d to obtain tailings powder with the specific surface area being 420 m < 2 >/kg or above, uniformly stirring and mixing the tailings powder and carbonized sludge, and then putting the mixture into a calcining furnace to be calcined to obtain the tailings recycled material. The problems that an effective treatment method for tailings generated in the existing steel smelting process is lacked and the resource utilization rate is low are solved, the tailings recycled material serving as a mineral admixture is applied to concrete to replace part of cement, and the use amount of the cement is reduced.
本发明涉及炼钢尾渣处理技术领域，提供一种钢铁冶炼尾渣处理工艺，包括以下步骤：将尾渣送入永磁磁力滚筒进行初次磁选，分离出磁性尾渣A和尾料a，经过棒条筛进行筛分，得到粒度小于筛孔的尾料b和粒度大于筛孔的尾料c，尾料b经过烘干、二次磁选，得到磁性尾渣B和尾料d，所述尾料d依次经过棒磨机粗磨，立式磨机细磨，得到比表面积420m2/kg以上的的尾渣粉，尾渣粉再与炭化污泥搅拌混合均匀，然后投入煅烧炉内进行煅烧，得到尾渣回收料。其解决了现有钢铁冶炼过程中产生的尾渣缺乏有效的处理方法，资源化利用率低的问题，尾渣回收料作为矿物掺合料应用于混凝土中，替代部分水泥，减少水泥的用量。
Steel smelting tailing treatment process
一种钢铁冶炼尾渣处理工艺
WANG QINGLE (Autor:in)
31.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
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
/
B07B
Trennen fester Stoffe von festen Stoffen durch Sieben, Klassieren oder Sichten oder durch Verwendung von Gasströmungen
,
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS
/
C04B
Kalk
,
LIME
Filling tailing curing agent containing copper smelting slag
| Europäisches Patentamt | 2021
Tailing gel material and application thereof in tailing treatment
| Europäisches Patentamt | 2023
Tailing dam construction method coupled with tailing stockpiling process
| Europäisches Patentamt | 2024