Feeding box for thickener and using method thereof

Abstract

The invention discloses a feeding box for a thickener and a using method of the feeding box. The feeding box comprises a feeding barrel, a feeding pipe and a flocculating agent adding pipe inserted into the feeding barrel; wherein the feeding barrel is divided into a feeding dilution area, a flocculation mixing area and a floccule discharging area from top to bottom; the feeding pipe is arranged on the feeding barrel of the feeding dilution area in a communicating manner along the tangential direction; an annular flow guide plate and a plurality of energy dissipation vertical plates are arranged in the feeding barrel of the flocculation mixing area from top to bottom, a plurality of adding holes are formed in the flocculant adding pipe between the annular flow guide plate and the energy dissipation vertical plates, a convergent material guide section is arranged at the bottom of the feeding barrel, and an opening in the bottom of the material guide section is formed in the floccule discharging area. The feeding pipe is arranged in the feeding dilution area of the feeding barrel, the adding holes are formed in a flocculation mixing area of the feeding barrel, the annular flow guideplate is arranged in the feeding dilution area and the flocculation mixing area to achieve the blocking effect, tailing raw stock dilution and flocculation reaction are completed in a segmented mode,and dilution and flocculation reaction processes are not overlapped; dilution and flocculation reactions are not crossed.

Description

technical field [0001] The invention relates to the technical field of mine solid waste filling, in particular to a feed box for a thickener and a use method thereof. Background technique [0002] The thickener is a kind of solid-liquid separation equipment based on the principle of gravity sedimentation. It relies on the self-weight of fine-grained materials and the action of flocculants to concentrate thinner pulp into thicker pulp. Thickeners are widely used in mining, chemical industry, coal, smelting and other fields, for example, they can be used for filling mine tailings. Thickeners are generally equipped with feeding barrels for feeding. The feeding barrels play the role of mixing flocculants and dispersing pulp, and are considered to be the key components of thickeners. The conventional feeding cylinder is a cylinder that extends into the thickener, and the pulp is radially fed into the cylinder, and flows into the thickener automatically through the discharge pipe...

AI Technical Summary

Problems solved by technology

[0004] 1. The flocculant and the pulp enter the cylinder synchronously for tailings flocculation, and the dilution water overflowing from the thickener is directly fed into the tailings flocculation, causing the tailings slurry to flocculate first and then diluted, destroying the tailings flocculation, The settling velocity is low; part of the fine-grained fraction is separated, causing the overflow to run muddy; the high-concentration tailings slurry does not dilute the incoming material, and the direct flocculation reaction results in high flocculant consumption and poor flocculation and settlement effect

[0005] 2. The dilution water and flocculant overflowing in the thickener are directly fed from the top of the cylinder, resulting in the crossing of tailings slurry dilution and flocculation reaction, and the flocculation effect is not good

[0006] 3. The flocculant is added to the cylinder at a single point, so that the flocculant cannot be fully mixed with the tailings slurry in the cylinder, and the flocculation and settlement effect of the tailings mortar is poor

[0007] 4. The existing feeding cylinder has defects such as uneven mixing of pulp and flocculant, which leads to low concentration and poor continuity of the underflow of the thickener

[0008] 5. The ore pulp is fed in the radial direction, breaking up the eddy current of solid-liquid separation in the feeding cylinder, making the cloth flocculated, the separation effect and settling time are difficult to guarantee, and the solid-liquid separation efficiency is low

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