The invention discloses modified low-
alkalinity sulphoaluminate
cement, which is a hydraulic cementing material prepared by the following steps:
forging raw materials including proper elements to obtain 55-70% of clinker which takes
anhydrous calcium sulphoaluminate (C3A3S), dicalcium
silicate (C2S) and tetracalcium aluminoferrite (C4AF) as main mineral elements, using 5-10% of
lithium residues asa modifier, adding a proper amount of 8-15% of
anhydrite, 15-20% of mixing material and 0.05-0.2% of adjusting setting agents, and
grinding to prepare the
cement. The invention has the advantages ofsimple preparation technique, easily guaranteed quality,
industrial waste residue recycle, low
energy consumption, low cost, environment protection, good performances of low
alkalinity, early and highstrength, microdilatancy,
cracking resistance, freezing resistance, impermeability, anti-
carbonization, abrasion resistance, flushing resistance, good adhering capability, adjustable primary time offinal setting, good
slurry fluidity, good coherence in water and wide application range.