Composite screening device for desert sand

Abstract

The invention discloses a composite screening device for desert sand, and relates to the technical field of sand screening. The composite screening device comprises a primary centrifugal screening component, a secondary blast screening component and a secondary centrifugal screening component, wherein the secondary blast screening component and the secondary centrifugal screening component are communicated with an outlet of the primary centrifugal screening component; the desert sand is roughly screened through the primary centrifugal screening component, large-particle-size desert sand and small-particle-size desert sand are separated firstly, then the roughly screened desert sand is finely screened through the secondary blast screening component and the secondary centrifugal screening component, finally a plurality of kinds of sand materials with different particle sizes from large to small are separated out, and the different sand materials finally obtained can correspond to different using ways to be used. The composite screening device is specially used for separating the desert sand, the desert sand is fully separated relatively, and the use value of the desert sand cannot beaffected by screening reasons.

Description

technical field [0001] The invention relates to the technical field of sand screening, in particular to a compound screening device for desert sand. Background technique [0002] At present, the sand used in construction projects in most areas of my country is still river sand. Due to the increase in demand, river sand has been over-exploited for many years. Now my country's desertified land has reached 18.12% of the country's land area, about 1.7 million square kilometers. In areas rich in desert sand resources, there are a large number of ultra-fine sand resources. In order to meet the requirements of sustainable development and environmental protection, desert sand is used in construction. profound significance in the industry. However, the average particle size of desert sand is small, usually between 0.13mm and 0.315mm, and the roundness is low, so it needs to be screened to select sand particles that meet the requirements of concrete preparation. [0003] The commonly...

AI Technical Summary

Problems solved by technology

In addition, there is no method or equipment dedicated to the separation of multiple particle sizes of desert sand, which leads to insufficient separation of desert sand and affects the use value of desert sand

Images