Method for manufacturing gold tailings ash aggregates

Abstract

The invention relates to a method for manufacturing gold tailings ash aggregates, which comprises materials and proportions, as well as a manufacturing process flow. The materials comprise 90 to 92 percent of gold tailings ash and 8 to 10 percent of pulverized coal. The process flow comprises the following steps of: baking the gold tailings ash, screening, and measuring; measuring the pulverized coal; conveying the gold tailings 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 ash material into a balling pan, and adding the rest half amount of water to produce balls; putting raw gold tailings ash aggregate balls into a static continuous aggregate sintering kiln for roasting; and discharging from the kiln, cooling, crushing and separating. The method is characterized in that: the gold tailings ash and the pulverized coal are respectively measured after the gold 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 gold tailings ash aggregate balls are sentto the sintering kiln for being roasted; and the gold tailings ash has the advantages of high waste utilization, high aggregate 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 material manufacturing, specifically a method that utilizes gold tailings powder in industrial waste slag as the main raw material, and a small amount of coal powder (or coal gangue powder or fly ash with high loss on ignition) as the secondary raw material. A method for manufacturing gold tailing powder ceramsite. Background technique [0002] Since the 1950s, Britain was the first in the world to use industrial waste residue-fly ash 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 a number of reasons. Until the 1990s, the climax of comprehensive utilization of fly ash was set off. my country is a large coal-producing country and a large coal-fired power generation country. The proportion of coal for heating ...

AI Technical Summary

Problems solved by technology

However, there are few studies on the utilization of gold tailings powder, and the sintering of gold tailings powder ceramsite is still blank.

[0003] Gold tailings powder is the solid waste discharged by the gold production industry. It is mostly piled up in mountains, rivers and rivers, occupying land and polluting the environment. Some of them will cause major accidents and cause great losses to people's lives and properties.

In the past, tailings powder was used as a raw material for the production of glass-ceramic products, but its development scale was limited, and there were few ways to utilize gold tailings powder. How to use it on a large scale is a new subject that needs to be studied and solved urgently.

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