A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a method for preparing grey bricks or grey tiles from iron separation tailings, and belongs to the technical field of solid waste treatment.The method comprises the steps that the iron separation tailings and water are mixed and then aged, and a mixture is obtained; extruding the mixture to prepare a blank; sequentially drying, microwave roasting and cooling the blank to obtain a grey brick or grey tile; compared with traditional fired grey bricks and grey tiles, the heating speed is high, the firing period is short, the molecular structure of the materials is damaged under the action of microwaves, the reaction temperature is 134 DEG C lower than the temperature needed by traditional reaction, energy consumption is lower, cost is lower, harmful substances are almost zero, the frost returning phenomenon is avoided, and under the action of microwaves, the energy consumption is low. The formed silicon-aluminum compound is stable in structure, not prone to weathering and stripping, low in harmful substance content, high in corrosion resistance and high in strength.
本发明提供了一种由选铁尾渣制备青砖或青瓦的方法，属于固废处理技术领域，本发明将选铁尾渣与水混合后陈化得到混合料；将所述混合料挤压制坯；将所述坯依次烘干、微波焙烧和冷却得到青砖或青瓦；与传统烧制青砖青瓦相比加热速度快，烧制周期短，物料在微波作用下破坏了物料分子结构，反应温度比传统反应所需的温度低134℃，耗能更少，成本更低，有害物质几乎为零，不会出现返霜现象，在微波作用下，形成的硅铝化合物结构稳定不易风化剥离，有害物质含量低，耐腐蚀性能强，具有较高的强度。
The invention provides a method for preparing grey bricks or grey tiles from iron separation tailings, and belongs to the technical field of solid waste treatment.The method comprises the steps that the iron separation tailings and water are mixed and then aged, and a mixture is obtained; extruding the mixture to prepare a blank; sequentially drying, microwave roasting and cooling the blank to obtain a grey brick or grey tile; compared with traditional fired grey bricks and grey tiles, the heating speed is high, the firing period is short, the molecular structure of the materials is damaged under the action of microwaves, the reaction temperature is 134 DEG C lower than the temperature needed by traditional reaction, energy consumption is lower, cost is lower, harmful substances are almost zero, the frost returning phenomenon is avoided, and under the action of microwaves, the energy consumption is low. The formed silicon-aluminum compound is stable in structure, not prone to weathering and stripping, low in harmful substance content, high in corrosion resistance and high in strength.
本发明提供了一种由选铁尾渣制备青砖或青瓦的方法，属于固废处理技术领域，本发明将选铁尾渣与水混合后陈化得到混合料；将所述混合料挤压制坯；将所述坯依次烘干、微波焙烧和冷却得到青砖或青瓦；与传统烧制青砖青瓦相比加热速度快，烧制周期短，物料在微波作用下破坏了物料分子结构，反应温度比传统反应所需的温度低134℃，耗能更少，成本更低，有害物质几乎为零，不会出现返霜现象，在微波作用下，形成的硅铝化合物结构稳定不易风化剥离，有害物质含量低，耐腐蚀性能强，具有较高的强度。
Method for preparing grey bricks or grey tiles from iron tailings
一种由选铁尾渣制备青砖或青瓦的方法
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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