Method for manufacturing cobalt tailings ash aggregates

Abstract

The invention relates to a method for manufacturing cobalt tailings ash aggregates, which comprises materials and proportions, as well as a manufacturing process flow. The materials comprise: 70 to 80 percent of cobalt tailings ash, 10 to 25 percent of pulverized fuel ash, and 5 to 10 percent of pulverized coal. The process flow comprises the following steps of: baking the cobalt tailings ash, screening, and measuring; respectively measuring the pulverized fuel ash and the pulverized coal; conveying the cobalt tailings ash, the pulverized fuel ash and the pulverized coal into a stirrer to be stirred in a dry state for about 2 minutes; adding half amount of water, and stirring in a wet state for about 2 minutes; feeding the stirred wet powder material into a pelletizing pan, and adding water to produce balls; putting the raw cobalt tailings ash aggregate balls into a static continuous sintering kiln for roasting; and discharging from the kiln, cooling, crushing and separating. The method is characterized in that: the cobalt tailings ash and the pulverized fuel ash and the pulverized coal are respectively measured after the cobalt tailings ash is baked and screened, are stirred in the stirrer in the dry state and the wet state and pelletized by adding water; the raw cobalt tailings ash aggregate balls are sent to the sintering kiln for being roasted; and the cobalt tailings ashhas the advantages of high waste utilization, high strength and low water absorption rate through three sintering process steps, namely preheating, sintering and cooling.

Description

technical field [0001] The invention relates to the technical field of building materials manufacturing, specifically a method for manufacturing cobalt tailings powder ceramsite by using cobalt tailings powder in industrial waste residue as the main raw material and low-quality fly ash with high ignition loss as the secondary raw material . Background technique [0002] Since the advent of artificial light aggregates in the United States at the beginning of the 20th century, countries have begun to produce shale ceramsite, replacing sandstone aggregates with light aggregates to reduce the weight of concrete and improve its performance. By the 1950s In the 1990s, Britain was the first in the world to use fly ash, an industrial waste residue, to produce fly ash ceramsite. my country built two production lines for sintered fly ash ceramsite in Tianjin Silicate Products Factory and Lanzhou in 1964, and reached a production climax in the 1970s and 1980s. It's at a standstill for...

AI Technical Summary

Problems solved by technology

[0004] Cobalt tailings powder is solid waste discharged from the cobalt production industry. It is mostly piled up in mountains and rivers, occupying land and polluting the environment. Some of them will cause major acci...

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