Device for collecting fine sand of a rock

Abstract

The invention relates to a device for collecting fine sand of a rock, characterized in that: the device comprises: a cylindrical main body; a first inclined plate inclinedly arranged in the main body and provided with a lower end separated from the inner wall of the main body; a second inclined plate inclinedly arranged in the main body towards the direction opposite to the first inclined plate and provided with a lower end separated from the inner wall and the bottom of the main body; a conic water chamber with an upper end fixed on the edge of the upper end of the main body and holes through which the fine sand of the rock flows and arranged on the lower end of the conic water chamber; a sludge inflow pipe arranged on the upper side of the main body and capable of supplying the rock sludge towards the upper side of the first inclined plate; an overflow pipe communicated with the upper end of the water chamber, therefore the pure water on the upper side of the water chamber is discharged to a sedimentation basin; a discharge pipe communicated with the side opposite to the lower end of the second inclined plate, therefore the sedimentary fine sand of the rock is discharged out.

Description

technical field [0001] The present invention relates to a rock fine sand recovery device, for the rock sludge produced in the process of crushing rocks to make coarse aggregates and crushing its by-product stone powder to make fine aggregates such as artificial crushed stone sand, etc., before chemical treatment , Separating and recycling fine sand from the rock sludge, thereby reducing the amount of chemicals used in post-processing and minimizing the amount of garbage generated. Background technique [0002] Recently, with the rapid development of various construction industries using reinforced concrete, there has been a significant shortage of natural aggregates, so the frequency of using artificial aggregates and recycled aggregates instead of natural aggregates has gradually increased. Artificial aggregates are produced by crushing rocks in quarry, etc., and are divided into coarse aggregates and fine aggregates according to their thickness. [0003] When rocks are cr...

AI Technical Summary

Problems solved by technology

And, when containing about 3-5wt% fine powder in concrete, can reduce bleeding, thus have proper viscosity, thus reduce the material separation of concrete, but when the amount of fine powder exceeds 7wt%, the water needed to maintain viscosity Excessive use, below 2-3wt%, will cause concrete bleeding, which may cause material separation, and the concrete surface will be rough due to the decrease in filling performance during construction

[0008] In other words, in the previous sand making equipment, when processing the rock sludge generated in the fine aggregate production process, the whole rock sludge was treated with chemicals and then dehydrated, so that the rock fines contained in the rock sludge could not be fully recovered. As a result, the consumption of chemicals is large, and the amount of sludge cake finally discharged is also large, so it is difficult to dispose of garbage, and there is also the disadvantage that the fine rock sand useful for making concrete cannot be fully used.

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