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A platform for research: civil engineering, architecture and urbanism
Raw material using high-calcium iron tailings, cement clinker, negative-temperature engineering material and method
The invention relates to a raw material, a cement clinker, a negative-temperature engineering material and a method for utilizing high-calcium iron tailings. The raw material comprises high-calcium iron tailings, desulfurized gypsum, aluminum ash and limestone, the raw material comprises 34 to 40 parts by weight of CaO, 6 to 12 parts by weight of SiO2, 20 to 28 parts by weight of Al2O3, 5 to 12 parts by weight of Fe2O3 and 12 to 18 parts by weight of SO3, and the ratio of aluminum to sulfur is 1.5 to 2.0. The preparation method comprises the following steps: uniformly mixing and homogenizing the raw materials according to a set ratio, and calcining the homogenized raw materials at 1220-1250 DEG C for 30-45 minutes to obtain the cement clinker. When the material is used as a negative temperature engineering material, the hydration reaction can be ensured to be continuously carried out, and the strength increase at negative temperature is realized. The calcining temperature and the energy consumption are reduced.
本发明涉及利用高钙铁尾矿的生料、水泥熟料、负温工程材料及方法。生料包括高钙铁尾矿、脱硫石膏、铝灰和石灰石，生料中CaO占34‑40重量份，SiO2占6‑12重量份，Al2O3占20‑28重量份，Fe2O3占5‑12重量份，SO3占12‑18重量份，铝硫比为1.5‑2.0。将原料按设定比例进行混匀均化，均化后的生料在1220℃‑1250℃温度下煅烧，时间为30‑45min，得到水泥熟料。在作为负温工程材料使用时，能够保证水化反应持续进行，实现负温下强度增长。降低煅烧温度，降低能耗。
Raw material using high-calcium iron tailings, cement clinker, negative-temperature engineering material and method
The invention relates to a raw material, a cement clinker, a negative-temperature engineering material and a method for utilizing high-calcium iron tailings. The raw material comprises high-calcium iron tailings, desulfurized gypsum, aluminum ash and limestone, the raw material comprises 34 to 40 parts by weight of CaO, 6 to 12 parts by weight of SiO2, 20 to 28 parts by weight of Al2O3, 5 to 12 parts by weight of Fe2O3 and 12 to 18 parts by weight of SO3, and the ratio of aluminum to sulfur is 1.5 to 2.0. The preparation method comprises the following steps: uniformly mixing and homogenizing the raw materials according to a set ratio, and calcining the homogenized raw materials at 1220-1250 DEG C for 30-45 minutes to obtain the cement clinker. When the material is used as a negative temperature engineering material, the hydration reaction can be ensured to be continuously carried out, and the strength increase at negative temperature is realized. The calcining temperature and the energy consumption are reduced.
本发明涉及利用高钙铁尾矿的生料、水泥熟料、负温工程材料及方法。生料包括高钙铁尾矿、脱硫石膏、铝灰和石灰石，生料中CaO占34‑40重量份，SiO2占6‑12重量份，Al2O3占20‑28重量份，Fe2O3占5‑12重量份，SO3占12‑18重量份，铝硫比为1.5‑2.0。将原料按设定比例进行混匀均化，均化后的生料在1220℃‑1250℃温度下煅烧，时间为30‑45min，得到水泥熟料。在作为负温工程材料使用时，能够保证水化反应持续进行，实现负温下强度增长。降低煅烧温度，降低能耗。
Raw material using high-calcium iron tailings, cement clinker, negative-temperature engineering material and method
利用高钙铁尾矿的生料、水泥熟料、负温工程材料及方法
WANG XUJIANG (author) / SUN DEQIANG (author) / WANG WENLONG (author) / LI JINGWEI (author) / MAO YANPENG (author) / SONG ZHANLONG (author) / SUN JING (author) / ZHAO XIQIANG (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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