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Method for preparing ceramsite by using nickel hydrometallurgy slag
The invention discloses a method for preparing ceramsite by using nickel hydrometallurgy slag, the method comprises the following steps: respectively drying nickel slag and shale, grinding, and uniformly mixing according to the mass ratio of (1-5): (5-9) to obtain a raw material; uniformly mixing the raw material with water according to a mass ratio of 1: (0.05-2), pelletizing, drying, and controlling the water content to be less than 5% to obtain a plurality of dried pellets; and the multiple dried balls are subjected to a preheating procedure and a high-temperature roasting procedure in sequence and then naturally cooled, and the ceramsite prepared from the nickel hydrometallurgy slag is obtained. According to the method, the shale is introduced, the nickel hydrometallurgy slag and the shale are roasted, the non-toxic ceramsite capable of being directly applied is obtained, the problem that the nickel hydrometallurgy slag is difficult to treat is effectively solved, the heavy metal leaching risk of the nickel hydrometallurgy slag is remarkably reduced, and the effects of reutilization of hazardous waste, energy conservation and environmental protection are achieved.
本发明公开了一种利用镍的湿法冶炼渣制备陶粒的方法，其步骤包括：将镍渣和页岩分别干燥后磨碎，按质量比(1～5)：(5～9)混合均匀，得到生料；将生料与水按质量比1：(0.05～2)混合均匀后制球，干燥并控制含水率小于5％，得到若干干燥球；若干干燥球依次经过预热工序和高温焙烧工序后，自然冷却，得到利用镍的湿法冶炼渣制备的陶粒。本发明引入页岩，将镍的湿法冶炼渣与页岩进行焙烧，得到能够直接应用的无毒害陶粒，有效解决镍的湿法冶炼渣难以处理的问题，显著降低了镍的湿法冶炼渣的重金属浸出风险，实现了危废再次利用、节能环保的效果。
Method for preparing ceramsite by using nickel hydrometallurgy slag
The invention discloses a method for preparing ceramsite by using nickel hydrometallurgy slag, the method comprises the following steps: respectively drying nickel slag and shale, grinding, and uniformly mixing according to the mass ratio of (1-5): (5-9) to obtain a raw material; uniformly mixing the raw material with water according to a mass ratio of 1: (0.05-2), pelletizing, drying, and controlling the water content to be less than 5% to obtain a plurality of dried pellets; and the multiple dried balls are subjected to a preheating procedure and a high-temperature roasting procedure in sequence and then naturally cooled, and the ceramsite prepared from the nickel hydrometallurgy slag is obtained. According to the method, the shale is introduced, the nickel hydrometallurgy slag and the shale are roasted, the non-toxic ceramsite capable of being directly applied is obtained, the problem that the nickel hydrometallurgy slag is difficult to treat is effectively solved, the heavy metal leaching risk of the nickel hydrometallurgy slag is remarkably reduced, and the effects of reutilization of hazardous waste, energy conservation and environmental protection are achieved.
本发明公开了一种利用镍的湿法冶炼渣制备陶粒的方法，其步骤包括：将镍渣和页岩分别干燥后磨碎，按质量比(1～5)：(5～9)混合均匀，得到生料；将生料与水按质量比1：(0.05～2)混合均匀后制球，干燥并控制含水率小于5％，得到若干干燥球；若干干燥球依次经过预热工序和高温焙烧工序后，自然冷却，得到利用镍的湿法冶炼渣制备的陶粒。本发明引入页岩，将镍的湿法冶炼渣与页岩进行焙烧，得到能够直接应用的无毒害陶粒，有效解决镍的湿法冶炼渣难以处理的问题，显著降低了镍的湿法冶炼渣的重金属浸出风险，实现了危废再次利用、节能环保的效果。
Method for preparing ceramsite by using nickel hydrometallurgy slag
一种利用镍的湿法冶炼渣制备陶粒的方法
XU KAIHUA (author) / XUE QINGHUA (author) / HUANG DONGBO (author) / ZHU JUN (author) / YE BIAO (author) / ZHAO MING (author)
2021-08-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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