A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing lime balls from wet carbide slag
The invention belongs to the technical field of comprehensive utilization of carbide slag, and discloses a method for preparing lime balls from wet carbide slag. The method comprises the following steps: carrying out primary impurity removal and secondary impurity removal on wet carbide slag slurry, and then carrying out filter pressing and drying to obtain dry carbide slag; the dry carbide slag is decomposed after being subjected to three-stage preheating, and lime powder is obtained; and extracting air from the lime powder through negative pressure, and carrying out ball pressing molding to obtain the lime balls. According to the method, two-stage impurity removal is adopted, impurities with large particles and large density and small-particle impurities are removed, and lime is fired by adopting a three-stage preheating decomposition method, so that the purity of the carbide slag is ensured, and the activity of the lime generated after the carbide slag is decomposed is also ensured. According to the invention, air in the lime powder is extracted by adopting the small negative-pressure bin before the lime powder is pressed into the balls, so that the air content in the lime powder is greatly reduced, and the compactness and physical properties of the lime balls are improved.
本发明属于电石渣综合利用技术领域，公开了一种湿法电石渣制备石灰球的方法。本发明将湿法电石渣浆进行一级除杂、二级除杂后压滤、烘干，得到干电石渣；将干电石渣通过三级预热后进行分解，得到石灰粉；将石灰粉通过负压抽取空气后，压球成型，得到石灰球。本发明采用二级除杂，去除了颗粒大、密度大的杂质和小颗粒杂质，采用三级预热分解法烧制石灰，既保证了电石渣的纯度，又保证了电石渣分解后生成的石灰的活性。本发明在石灰粉压球成型前，采用负压小仓抽取石灰粉中的空气，极大地降低了石灰粉中空气含量，提高了石灰球的致密度和物理性能。
Method for preparing lime balls from wet carbide slag
The invention belongs to the technical field of comprehensive utilization of carbide slag, and discloses a method for preparing lime balls from wet carbide slag. The method comprises the following steps: carrying out primary impurity removal and secondary impurity removal on wet carbide slag slurry, and then carrying out filter pressing and drying to obtain dry carbide slag; the dry carbide slag is decomposed after being subjected to three-stage preheating, and lime powder is obtained; and extracting air from the lime powder through negative pressure, and carrying out ball pressing molding to obtain the lime balls. According to the method, two-stage impurity removal is adopted, impurities with large particles and large density and small-particle impurities are removed, and lime is fired by adopting a three-stage preheating decomposition method, so that the purity of the carbide slag is ensured, and the activity of the lime generated after the carbide slag is decomposed is also ensured. According to the invention, air in the lime powder is extracted by adopting the small negative-pressure bin before the lime powder is pressed into the balls, so that the air content in the lime powder is greatly reduced, and the compactness and physical properties of the lime balls are improved.
本发明属于电石渣综合利用技术领域，公开了一种湿法电石渣制备石灰球的方法。本发明将湿法电石渣浆进行一级除杂、二级除杂后压滤、烘干，得到干电石渣；将干电石渣通过三级预热后进行分解，得到石灰粉；将石灰粉通过负压抽取空气后，压球成型，得到石灰球。本发明采用二级除杂，去除了颗粒大、密度大的杂质和小颗粒杂质，采用三级预热分解法烧制石灰，既保证了电石渣的纯度，又保证了电石渣分解后生成的石灰的活性。本发明在石灰粉压球成型前，采用负压小仓抽取石灰粉中的空气，极大地降低了石灰粉中空气含量，提高了石灰球的致密度和物理性能。
Method for preparing lime balls from wet carbide slag
一种湿法电石渣制备石灰球的方法
ZHOU AIJIANG (author) / HUANG XINJIANG (author) / JIANG JUN (author) / LI HONGZHOU (author) / YE HUI (author) / ZHU MINGSHENG (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Method for preparing active lime through advanced treatment of carbide slag
| European Patent Office | 2022
Production equipment for preparing active lime by using carbide slag
| European Patent Office | 2024
Lime pellet prepared from carbide slag and process method
| European Patent Office | 2024