Method for preparing glass sand from muck tailings of urban constructional engineering

Abstract

The invention provides a method for preparing glass sand from muck tailings of urban construction engineering. According to the method, quartz sand in engineering muck can be extracted, quartz sand particles with high purity and moderate low purity can be obtained after a series of screening processes, and finally, the glass sand is prepared from the extracted quartz sand particles with high quality; and therefore, the obtained glass sand is high in quality, processing technology is short in time and high in efficiency, engineering waste is creatively changed into engineering decoration materials, and high economical efficiency and practicability are obtained.

Description

technical field [0001] The invention belongs to the technical field of urban construction engineering, and in particular relates to a method for preparing glass sand from dregs and tailings of urban construction engineering. Background technique [0002] With the rapid advancement of urbanization, a large amount of construction debris is produced every day, mainly from mountains, basements, etc., and among these construction debris, the surface of places such as southern Fujian and Zhanjiang, Guangdong is mainly composed of weathered or semi-weathered granite These slags have high iron content and are mainly composed of granite and other clays. The main component of white granite is quartz, which is as high as 73%-77% in the rock. Construction units generally use sand and stone In cement or backfill, etc., most of the others are transported to the disposal site for landfill. The above-mentioned treatment method does not form the purpose of green environmental protection com...

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Problems solved by technology

[0007] In summary, in the prior art, the tailings of urban construction engineering dregs are not used to prepare glass sand for building decoration materials. When using the tailings to extract quartz sand, the steps are cumbersome and there are many procedures, which makes the extraction efficiency relatively low. Low, when drying the quartz sand, magnetic separation and impurity removal cannot be performed at the same time, and the dried quartz sand can only be collected at the bottom after the hot air is stopped, and then enter the next process, and the process time becomes longer. The drying of quartz sand cannot be carried out continuously, only in one step, in the step of making glass sand from glass, it is to carry out the crushing operation after the glass is cooled, which also increases the time cost of preparing glass sand, for this reason, the present invention Provides a method for preparing glass sand from tailings of urban construction engineering dregs that can save preparation time, integrate multiple processes, and perform magnetic separation and impurity removal while drying

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