Copper tailing powder ceramsite manufacturing method

Abstract

The invention relates to a copper tailing powder ceramsite manufacturing method. Raw materials adopted by the copper tailing powder ceramsite manufacturing method comprise 70 to 80% of copper tailing powder, 10 to 25% of fly ash and 5 to 10% of coal powder. The copper tailing powder ceramsite manufacturing method comprises the following steps of drying the copper tailing powder by an oven, sieving, carrying out metering processes respectively on the sieved copper tailing powder, the fly ash and the coal powder, feeding the sieved copper tailing powder, the fly ash and the coal powder into a mixer to carry out dry stirring for about 2 minutes, adding water into the mixture until the volume of the water is a half of that of the mixer, carrying out wet stirring for about 2 minutes, feeding the wet powder obtained by the wet stirring into a prilling disc, adding water into the wet powder to carry out prilling, putting the copper tailing powder ceramsite raw pellets obtained by the previous step into a static continuous sintering kiln to carry out sintering, taking out the sintered products from the static continuous sintering kiln, cooling, crushing, and screening. The copper tailing powder ceramsite manufacturing method is characterized in that the copper tailing powder subjected to drying, sieving and metering, the metered fly ash and the metered coal powder are dried and mixed in the mixer, then are subjected to wet stirring, and then are added with water to form the copper tailing powder ceramsite raw pellets; and the copper tailing powder ceramsite raw pellets are fed into the static continuous sintering kiln for sintering to form desired products after three processes of preheating, sintering and cooling. Copper tailing powder ceramsites obtained by the copper tailing powder ceramsite manufacturing method has the advantages of high waste copper tailing powder utilization rate, high strength and low water absorption.

Description

technical field [0001] The invention relates to the technical field of building material manufacturing, specifically a method for manufacturing copper tailings powder ceramsite by using copper tailings powder in industrial waste slag 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 a n...

AI Technical Summary

Problems solved by technology

[0004] Copper tailings powder is a solid waste discharged from the copper 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, copper tailings powder was used as a mixture for the production of cement. Later, people gradually replaced it with fly ash or water-quenched slag and steel slag. There are few ways to use copper tailings powder, and some use it to produce concrete bricks. However, the dosage is limited, and how to use it on a large scale is a new issue that needs to be studied and solved urgently.

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