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Microporous light sintered brick and preparation method thereof
The invention relates to a microporous light sintered brick and a preparation method thereof. The microporous light sintered brick is prepared from tailings and a pore-forming agent. The pore-formingagent is at least one of straw powder, sawdust and polystyrene; raw materials of the microporous light sintered brick comprise the components in percentage by mass: 85-95% of tailings and 5-15% of thepore-forming agent; the tailings are directly obtained after coal slime is sorted through sorting equipment, and the tailings comprise the components in percentage by mass: 45-65% of SiO2, 18-25% ofAl2O3, 3-5% of Fe2O3, 3-5% of CaO, 1-3% of MgO and the balance being other elements. The plasticity index of the tailings is 11-18, and the calorific value of the tailings is 1.6-2.5 MJ/kg. The performance of the microporous light sintered brick meets or even exceeds the national standard, and recycling of the coal slime tailings is achieved. The preparation method is simple in process, and the time cost is greatly saved.
本发明涉及一种微孔轻质烧结砖及其制备方法。所述微孔轻质烧结砖原料由尾矿和成孔剂组成；所述成孔剂指秸秆粉、锯末以及聚苯乙烯中的至少一种；所述原料各成分质量百分比为：尾矿85～95％，成孔剂5‑15％；所述尾矿由煤泥经分选设备分选后直接获得，尾矿中各成分的质量百分比为：SiO为45～65％、AlO为18～25％、FeO为3～5％、CaO为3～5％、MgO为1～3％，其余为其他元素；所述尾矿塑性指数为11～18，热值1.6～2.5MJ/kg。本发明所述微孔轻质烧结砖性能符合甚至超过国家标准，实现了煤泥尾矿的再利用。其制备方法工艺简单，大大节约了时间成本。
Microporous light sintered brick and preparation method thereof
The invention relates to a microporous light sintered brick and a preparation method thereof. The microporous light sintered brick is prepared from tailings and a pore-forming agent. The pore-formingagent is at least one of straw powder, sawdust and polystyrene; raw materials of the microporous light sintered brick comprise the components in percentage by mass: 85-95% of tailings and 5-15% of thepore-forming agent; the tailings are directly obtained after coal slime is sorted through sorting equipment, and the tailings comprise the components in percentage by mass: 45-65% of SiO2, 18-25% ofAl2O3, 3-5% of Fe2O3, 3-5% of CaO, 1-3% of MgO and the balance being other elements. The plasticity index of the tailings is 11-18, and the calorific value of the tailings is 1.6-2.5 MJ/kg. The performance of the microporous light sintered brick meets or even exceeds the national standard, and recycling of the coal slime tailings is achieved. The preparation method is simple in process, and the time cost is greatly saved.
本发明涉及一种微孔轻质烧结砖及其制备方法。所述微孔轻质烧结砖原料由尾矿和成孔剂组成；所述成孔剂指秸秆粉、锯末以及聚苯乙烯中的至少一种；所述原料各成分质量百分比为：尾矿85～95％，成孔剂5‑15％；所述尾矿由煤泥经分选设备分选后直接获得，尾矿中各成分的质量百分比为：SiO为45～65％、AlO为18～25％、FeO为3～5％、CaO为3～5％、MgO为1～3％，其余为其他元素；所述尾矿塑性指数为11～18，热值1.6～2.5MJ/kg。本发明所述微孔轻质烧结砖性能符合甚至超过国家标准，实现了煤泥尾矿的再利用。其制备方法工艺简单，大大节约了时间成本。
Microporous light sintered brick and preparation method thereof
一种微孔轻质烧结砖及其制备方法
ZHANG YANBIN (author)
2020-05-08
Patent
Electronic Resource
Chinese
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