Tailing solid waste resource recycling and reusing treatment device

Abstract

The invention discloses a tailing solid waste resource recycling and reusing treatment device. The tailing solid waste resource recycling and reusing treatment device comprises a charging device, first screening devices, second screening devices, an overlapping prevention conveying device, an ordering conveying device, a colorimeter screening device and a guide plate device which are sequentiallyarranged; the first screening devices are used for carrying out size grading on a mixed material; and the second screening devices are used for separating gangue, coal sheets and coal dust. The tailing solid waste resource recycling and reusing treatment device is reasonable in structural arrangement, a gangue mountain can be automatically filtered and screened, the coal dust, the small-size gangue or the coal sheets, and the large-size gangue or the coal sheets can be effectively separated, and are stored separately, the dirt content of the separated coal dust and coal sheets is relatively low, the integral heating value is increased, ineffective transportation and storage are reduced, the collecting operation is efficient and convenient, water is not required to be used as a screening medium in the whole process, and water resources are saved.

Description

technical field [0001] The invention relates to the technical field of tailings treatment, in particular to a tailings solid waste resource recovery and reuse treatment device. Background technique [0002] Coal is China's main energy source, and its production and consumption have ranked first in the world for many years. Northwest China is a major coal production base in China, accounting for about 72% of the country's coal production capacity. Raw coal contains some non-coal substances, such as gangue, sulfur-containing salt and other substances with high ash content will reduce the calorific value of coal, so it is necessary to discharge impurities such as gangue from the coal and pile them up for treatment. [0003] At present, the stockpile of coal gangue in my country is about 4.5 billion tons. According to incomplete statistics, there are more than 2,600 large-scale gangue dumps in the country, covering an area of ​​15,000 hectares. Currently, they are still growin...

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Problems solved by technology

Moreover, the massive accumulation of coal gangue may also cause geological disasters such as gangue collapse and landslide, coal gangue debris flow, and gangue explosion, which seriously threaten the lives of residents in the mining area.

[0004] The screening of coal gangue is currently generally carried out by water washing, but in the northwestern region where water is scarce, there is drought and little rain all year round, it is not suitable to use this method for screening coal gangue, resulting in the dry selection method, the traditional dry selection is through manual select, inefficient

The coal content in the existing gangue dumps accounts for about 13.5%, and a large amount of coal is discarded on the gangue dumps every year, which not only increases the storage capacity of the gangue dumps, but also causes a lot of waste

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