Cement clinker produced by using waste high-silicon high-alkali limestone and preparation method thereof

• Main Authors: XING XIAOFENG, HAN ZHENGQI, LI BAOMING, LYU PENG, LI DELIANG
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a cement clinker produced by using waste high-silicon high-alkali limestone and a preparation method thereof. The cement clinker is prepared from the following raw materials in parts by weight: 82-87 parts of high-silicon high-alkali limestone; 5-8 parts of sandstone; 5-8 parts of tailings; 2-5 parts of fly ash; 0.2 to 1 part of desulfurized gypsum; wherein in the high-silicon high-alkali limestone, the content of CaO is 44 to 49 percent, the content of SiO2 is 8 to 12 percent, and the content of R2O is 0.7 to 1.2 percent. By optimizing ingredient selection, optimizing an ingredient scheme, selecting rate value control and adjusting the sulfur-alkali ratio by using the desulfurized gypsum, the problems of difficulty in grinding and poor burnability of the low-grade high-silicon high-alkali limestone are solved, the cement clinker is produced by using the low-grade high-silicon high-alkali limestone, the clinker strength meets the expected requirement, the enterprise benefit is greatly