A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a method for preparing active lime through advanced treatment of carbide slag, and relates to the technical field of carbide slag treatment, and the method comprises the following steps: collecting raw materials, treating the raw materials, screening to remove impurities, mixing the raw materials, curing the raw materials, calcining the raw materials, treating waste gas, and separating and cooling. After the carbide slag is finely ground and processed, H3PO4 particles are added to form mixed particles, in the curing and two-stage calcination process, the H3PO4 is used for refining the particle size of quick lime, Ca3 (PO4) 2 is formed through high-temperature melting, the quick lime particles are in tight contact, the surface affinity and compactness of the calcium block are enhanced, the high-temperature compressive strength and activity are effectively improved, and it is verified that the calcium block has a good application prospect. The purity of the obtained active lime is larger than or equal to 90%, PH3 gas is treated through a gas washing bottle containing a copper sulfate solution, copper phosphide and sulfuric acid are generated, environment pollution is avoided, the gas can react to generate other materials, and recycling is facilitated.
本发明提供了一种电石渣深度处理制备活性石灰的方法，涉及电石渣处理技术领域，包括以下步骤：收集原料、原料处理、筛分去杂、原料混合、原料熟化、原料煅烧、废气处理和分离冷却；本发明在电石渣细磨加工后，添加H3PO4颗粒，形成混合颗粒，在熟化和两级煅烧中，利用H3PO4细化生石灰粒径，并通过高温熔融形成Ca3（PO4）2，导致生石灰颗粒紧密接触，增强了钙块的表面亲和力和致密性，有效提高了高温抗压强度以及活性，经验证，获得的活性石灰纯度≥90％，且通过盛有硫酸铜溶液的洗气瓶对PH3气体进行处理，生成磷化铜与硫酸，既避免污染环境，又能将气体反应生成其他材料，方便回收利用。
The invention provides a method for preparing active lime through advanced treatment of carbide slag, and relates to the technical field of carbide slag treatment, and the method comprises the following steps: collecting raw materials, treating the raw materials, screening to remove impurities, mixing the raw materials, curing the raw materials, calcining the raw materials, treating waste gas, and separating and cooling. After the carbide slag is finely ground and processed, H3PO4 particles are added to form mixed particles, in the curing and two-stage calcination process, the H3PO4 is used for refining the particle size of quick lime, Ca3 (PO4) 2 is formed through high-temperature melting, the quick lime particles are in tight contact, the surface affinity and compactness of the calcium block are enhanced, the high-temperature compressive strength and activity are effectively improved, and it is verified that the calcium block has a good application prospect. The purity of the obtained active lime is larger than or equal to 90%, PH3 gas is treated through a gas washing bottle containing a copper sulfate solution, copper phosphide and sulfuric acid are generated, environment pollution is avoided, the gas can react to generate other materials, and recycling is facilitated.
本发明提供了一种电石渣深度处理制备活性石灰的方法，涉及电石渣处理技术领域，包括以下步骤：收集原料、原料处理、筛分去杂、原料混合、原料熟化、原料煅烧、废气处理和分离冷却；本发明在电石渣细磨加工后，添加H3PO4颗粒，形成混合颗粒，在熟化和两级煅烧中，利用H3PO4细化生石灰粒径，并通过高温熔融形成Ca3（PO4）2，导致生石灰颗粒紧密接触，增强了钙块的表面亲和力和致密性，有效提高了高温抗压强度以及活性，经验证，获得的活性石灰纯度≥90％，且通过盛有硫酸铜溶液的洗气瓶对PH3气体进行处理，生成磷化铜与硫酸，既避免污染环境，又能将气体反应生成其他材料，方便回收利用。
Method for preparing active lime through advanced treatment of carbide slag
一种电石渣深度处理制备活性石灰的方法
2022-03-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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