SU924134A1 - Pelletizer - Google Patents

Description

The invention relates to the preparation of iron ore materials for remelting in metallurgical units, in particular to the agglomeration .. 5

The closest in technical terms and the achieved result to the proposed pelletizer, comprising a case with additional drums of a smaller diameter, placed in it, a loading chute and a drive [13.

The disadvantage is that in the process of movement of the charge along the pelletizer, the mass exchange between the volumes of the charge contained in the additional drums is excluded. The distribution of the charge into autonomous, unrelated streams contributes to the gas averaging of the charge in __ cross-section of a rotating drum, which is especially important when using multicomponent fine charge with a high content of concentrates and sludge.

In addition, the charge from the optimal 25 rolling mode in the main drum switches to the waterfall mode in additional drums, which leads to partial destruction of pellets of the pelletized charge. thirty

2

The purpose of the invention is to improve the distribution of moisture in the charge and improve the quality of the sinter.

To achieve this goal in a pelletizer containing a case of e-different? confused in it with additional drums of smaller diameter, loading chute and drive, additional drums are placed at a distance of 1/4 - 1/3 of the length of the pelletizer, and their length is 1/4 - 1/3 of its length.

Figure 1 shows a General view of the device; in fig. 2 - section A — A in FIG. .

The housing 1 rotates on the rollers 2, inside the pelletizer rigidly fixed additional drums 3 of smaller diameter and length. Boot chute 4 serves to supply the charge to the pelletizer, water is supplied to humidification by pipe 5. To ensure the required rigidity of the structure, pipe 6 is installed in the center. Additional drums are installed at a distance of 1/4 - 1/3 of the pelletizer's length.

Reducing the specified length of additional drums reduces to

minimum process of enhanced variable * ·

shivaniya batch and better distribution3

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moisture content in the volume of the material, increasing the length contributes to the reduction of the pelletizing time by increasing the mixing time, which leads to the fact that a well-mixed mixture does not have time to pelletize.

The diameter of the additional drums is 1/4 - 1/3 of the diameter of the main drum, which contributes to the movement of the charge in them in the waterfall mode. providing better mixing of the mixture and the distribution of moisture in it due to the achievement of the degree of filling of additional drums with a mixture of more than 12%.

The device works as follows.

The charge loaded into the pelletizer is moistened to the zone of action of the additional drums 3 and pelletized. Then the mixture goes into additional drums, where it is subjected to intensive mixing. After unloading from the additional drums, the charge passes the last stage of pelletizing. In the zone of action of the additional drums, the charge is processed in a waterfall mode, which contributes to its good mixing and moisture distribution in it, in the other two zones the charge is in the rolling mode,

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which contributes to better aggregation.

In general, the preparation of the charge is improved due to a better distribution of moisture due to intensive mixing in the area of the action of additional drums, as well as the absence of high loads on the granules before it is unloaded from the drum barrel.

In this device, the degree of charging of the charge is improved, the quality of preparation of the sinter charge is improved.

Claims (1)

Claim The pelletizer, comprising a housing with additional drums of smaller diameter placed in it, a loading chute and a drive, which means that, in order to improve the distribution of moisture in the charge and improve the quality of the sinter, the additional drums are placed at a distance of 1/4 - 1/3 length pelletizer, and their length is 1/4 - 1/3 of its length.