SU1749274A1 - Bowl cooler of lumpy materials - Google Patents

Abstract

SUBSTANCE: in order to intensify the cooling process, the annular hopper 1 is made expanding downward by tilting the outer 3 or outer 3 and inner 4 louvre walls. The width of the ring bunker in the lower discharge part is 1.3-1.4 times greater than in the upper part. The loading knife 7 is sunk by an amount equal to 0.7-0.8 of the width of the ring bunker in the lower discharge part. 3 il.

Description

The invention relates to the production of agglomerated iron ore raw materials in ferrous metallurgy, namely, to the construction of devices for cooling bulk materials after their hot agglomeration.

A chalice cooler of sinter and pellets is known, consisting of a rotating annular hopper with a receiving funnel, external and internal louvre walls, and a fixed discharge knife 1.

Also known chalice cooler lumpy materials containing a receiving funnel connected to the rotational drive ring hopper with outer and inner louvered walls, bottom plate, central column and discharge knife 2,

The rotating ring bunker has vertical louvered walls, as a result of which the thickness of the cooled material layer is the same over the entire height of the bunker; therefore, in the upper part of the bunker, where the material is hotter, much smaller

- the volume of cold air (due to its high heating in the layer and, consequently, expansion) than in the lower part, where the material has a much lower temperature, which reduces the cooling efficiency of the lump material.

The aim of the invention is to intensify the process of cooling bulk materials.

This goal is achieved by the fact that in the design of a cup cooler of lump materials containing a receiving funnel, an annular hopper connected to the rotational drive with external and internal louvre walls, a bottom plate, a central column and a discharge knife, the width of the annular bunker in the lower discharge part is 1.3 -1.4 times more than at the top.

Taking into account the increase in air volume during heating and grinding of the material during the cooling process, leading to a decrease in the gas permeability of the layer, enhanced air deflection in the upper part of the bunker is provided.

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If the width of the ring bunker in the lower part is greater than the width in the upper part less than 1.3 times, then less air will suck in the upper part than in the lower part and the cooling intensity will decrease. If the width in the lower part exceeds the width in the upper part, than 1.4 times, less air will be sucked in the lower part than in the upper part and the cooling intensity will also decrease.

Fig, 1 shows the proposed cooler, a general view; figure 2 is the same, top view; on fig.Z - section aa in figure 2.

The cooler consists of a rotating annular hopper 1 with a receiving funnel 2. an outer 3 and an inner 4 annular louvre walls, assembled from separate guide vanes, a lower case 5, a central column 6, a stationary unloading knife 7 and an air duct 8.

The outer annular wall 3 is inclined in such a way that the width of the annular bunker in the lower part a is 1.35 times larger than the width in the upper part b.

Cooler works as follows .1

A plate 5 with an annular hopper 1 rotates around a central column 6. In

through the receiving funnel 2, the bunker is loaded from above with cooled agglomerate or ewes. With the help of a fan connected to the duct 8, air is sucked through (blown through) bunker 1. The cooled material enters the rotating plate 5 and the fixed knife 7 is loaded onto the finished product path.

Due to the fact that the bunker is made expanding downward, air is enhanced in the upper part of the bunker and at the same time the cooling of the material inside it is intensified.

The use of the invention according to the invention will ensure stable cooling of the material to a temperature below 100 ° C, will increase the durability of the conveyor belts in times and reduce the consumption of cooling air.

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. FORUMAWLAH AND ISLANDS

Cup cooler of bulk materials containing a receiving hopper connected to a rotary drive annular

5 a bunker with outer and inner louvered walls, a bottom plate, a central column and an unloading knife, characterized in that, in order to intensify the cooling process, the width of the annular

0 bunkers in the lower discharge part are 1.3-1.4 times more than in the upper part.

Claims (1)

. Claim A bowl cooler of bulk materials containing a receiving funnel connected to a rotary drive with an annular hopper with external and internal louvered walls, a bottom plate, a central column and an unloading knife, characterized in that, in order to intensify the cooling process, the width of the annular hopper in the lower unloading part in 1.31.4 times more than the top. Fig.Z