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以贵州矿磷石膏、云南矿磷石膏和脱硫石膏为原料,通过水化造粒将磷石膏制成粗、细集料,并对粗集料进行必要的水泥包壳处理,再用普通混凝土工艺将其制成轻集料混凝土砌块。结果显示,制备的轻集料混凝土试块磷石膏占比高,具有轻质保温特性,不但抗压强度能达到墙体材料国家标准,还能承受严苛的冻融循环检验,完全符合墙体材料的要求,且能耗低、工艺简便易行,是极具市场潜力的磷石膏利用新技术。
Taking Guizhou mine phosphogypsum, Yunnan mine phosphogypsum and desulfurized gypsum as raw materials, the phosphogypsum is made into coarse and fine aggregate through hydration and granulation, and the necessary coarse cement is subjected to the cement cladding treatment, and then the ordinary concrete process Made of lightweight aggregate concrete blocks. The results show that the prepared light aggregate concrete test block phosphogypsum high proportion, with light insulation characteristics, not only compressive strength can reach the national standard of wall materials, but also to withstand rigorous freeze-thaw cycle test, in full compliance with the wall Material requirements, and low energy consumption, process is simple, is the market potential of phosphogypsum use of new technologies.