Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Process for preparing sulphoaluminate cement by resource utilization of electrolytic manganese residues
The invention discloses a process for preparing sulphoaluminate cement by resource utilization of electrolytic manganese residues, which comprises the following steps: uniformly mixing limestone, alumina, electrolytic manganese residues and titanium gypsum, and grinding to obtain a cement raw material; adding the cement raw material into a rotary kiln, heating to 600-700 DEG C, preserving heat for 1-2 hours, continuously heating to 1400-1460 DEG C, preserving heat for 20-40 minutes, and cooling to room temperature to obtain cement clinker; adding a silane coupling agent into absolute ethyl alcohol, and regulating the pH value of a system to 7.2-7.6 by adopting ammonia water, so as to obtain a pretreated coupling agent; adding fly ash into the pretreated coupling agent under the protection of nitrogen, stirring at 50-70 DEG C for 1-2 hours, and performing spray drying to obtain activated fly ash; and adding gypsum, limestone, nano silicon dioxide and calcium hydroxide into the cement clinker, uniformly mixing, carrying out ball milling, and adding the activated fly ash in a stirring state to obtain the sulphoaluminate cement prepared by resource utilization of the electrolytic manganese residues.
本发明公开了一种资源化利用电解锰渣制备硫铝酸盐水泥的工艺，包括如下步骤：将石灰石、矾土、电解锰渣、钛石膏混合均匀，研磨，得到水泥生料；将水泥生料加入至回转窑内，升温至600‑700℃，保温1‑2h，继续升温至1400‑1460℃，保温20‑40min，降至室温，得到水泥熟料；将硅烷偶联剂加入无水乙醇中，采用氨水调节体系pH值为7.2‑7.6，得到预处理偶联剂；在氮气保护下，将粉煤灰加入至预处理偶联剂中，50‑70℃搅拌1‑2h，喷雾干燥，得到活化粉煤灰；向水泥熟料中加入石膏、石灰石、纳米二氧化硅、氢氧化钙混合均匀，球磨，搅拌状态下加入活化粉煤灰，得到资源化利用电解锰渣制备硫铝酸盐水泥。
Process for preparing sulphoaluminate cement by resource utilization of electrolytic manganese residues
The invention discloses a process for preparing sulphoaluminate cement by resource utilization of electrolytic manganese residues, which comprises the following steps: uniformly mixing limestone, alumina, electrolytic manganese residues and titanium gypsum, and grinding to obtain a cement raw material; adding the cement raw material into a rotary kiln, heating to 600-700 DEG C, preserving heat for 1-2 hours, continuously heating to 1400-1460 DEG C, preserving heat for 20-40 minutes, and cooling to room temperature to obtain cement clinker; adding a silane coupling agent into absolute ethyl alcohol, and regulating the pH value of a system to 7.2-7.6 by adopting ammonia water, so as to obtain a pretreated coupling agent; adding fly ash into the pretreated coupling agent under the protection of nitrogen, stirring at 50-70 DEG C for 1-2 hours, and performing spray drying to obtain activated fly ash; and adding gypsum, limestone, nano silicon dioxide and calcium hydroxide into the cement clinker, uniformly mixing, carrying out ball milling, and adding the activated fly ash in a stirring state to obtain the sulphoaluminate cement prepared by resource utilization of the electrolytic manganese residues.
本发明公开了一种资源化利用电解锰渣制备硫铝酸盐水泥的工艺，包括如下步骤：将石灰石、矾土、电解锰渣、钛石膏混合均匀，研磨，得到水泥生料；将水泥生料加入至回转窑内，升温至600‑700℃，保温1‑2h，继续升温至1400‑1460℃，保温20‑40min，降至室温，得到水泥熟料；将硅烷偶联剂加入无水乙醇中，采用氨水调节体系pH值为7.2‑7.6，得到预处理偶联剂；在氮气保护下，将粉煤灰加入至预处理偶联剂中，50‑70℃搅拌1‑2h，喷雾干燥，得到活化粉煤灰；向水泥熟料中加入石膏、石灰石、纳米二氧化硅、氢氧化钙混合均匀，球磨，搅拌状态下加入活化粉煤灰，得到资源化利用电解锰渣制备硫铝酸盐水泥。
Process for preparing sulphoaluminate cement by resource utilization of electrolytic manganese residues
一种资源化利用电解锰渣制备硫铝酸盐水泥的工艺
LI HAO (Autor:in) / ZHANG SHIJIE (Autor:in) / ZHANG XUEWEN (Autor:in) / LIU XIAOFEN (Autor:in) / ZHANG JINWEI (Autor:in)
01.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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